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1.

DECISIONING INFORMATION PRIORITY WITH ANALYTICAL HIERARCHY PROCESS ALGORITHM AND NAÏVE BAYES CLASSIFIER
Sutadi Triputra, Ririn Suharsih, Aila Gema Safitri, Rinanda Febriani

Universitas Muhammadiyah Bandung


Abstract

Technology growth today make any information can arrive in second. This benefit make another problem come where the information not filtered. It makes user overloaded information, therefore user need to filter it by them self. This activity make lot of time wasted. To solve this problem, should there is a system that can filter the information and sort them based on its priority. With this system, user no need to filter the information and the information that shown are already sorted by its priority.

Analytical Hierarchy Process (AHP) is one of Multi Criteria Decision Making (MCDM) algorithm that can making decision based on several criteria or to prioritize alternative than others. AHP will use to prioritize all the information in database based on user criteria. But there is a problem where AHP strongly depend on user input. So to solve this problem, AHP will collaborate with Naïve Bayes Classifier who mining the content of information and propose the information as alternative to AHP algorithm. With this collaboration proved that information can prioritize without user input with the interval from system and user priority for four interval space.

Topic: Computer Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=10


2.

Design and Implementation of Real Time Productivity Monitoring System in Rubber Injection Molding Machine Based on Visual Studio and Android Application
Michael Rubenstein (a*), Devi Handaya (b), Wahyudi Slamet S (c)

a) Electronics Engineering, Gajah Tunggal Polytechnic
Jl. Gatot Subroto KM. 7, Tangerang, Indonesia, 15135
*rubenstein0814[at]gmail.com

b) Electronics Engineering, Gajah Tunggal Polytechnic
Jl. Gatot Subroto KM. 7, Tangerang, Indonesia, 15135
devi.handaya[at]poltek-gt.ac.id

c) Research and Development Departement, PT. IRC Inoac Indonesia
Jl. Gatot Subroto KM. 7, Tangerang, Indonesia, 15135
wahyudi[at]ircinoac.co.id


Abstract

The molding machine is a machine used for rubber material cooking process. The one type of molding machine is an injection molding machine. The productivity monitoring process of injection molding machines can be said to still use conventional methods. This is due to the data collection using paper and takes 2 days to show into the computer database. In order to solving this problem, doing the research by designing an application of productivity monitoring system in real time on injection molding machine.
The monitoring system designed in the form of desktop and mobile applications. Desktop applications can be used to manage the plan production, the monitor production and know the data of result production. The test is doing by through two stages, that is ensuring the counter point in Programmable Logic Controller (PLC) has the same value with desktop and mobile applications, and then ensuring the applications can display indicators as the suitability of productivity.
The tests carried out indicate that monitoring systems with desktop and mobile applications can give the productivity information in injection molding machines in real time, give an indicators to the suitability of productivity with established standards, and reduce for use paper.

Topic: Computer Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=22


3.

Syllable-based Indonesian Speech Recognition
Danny Henry Galatang, Suyanto

Telkom University


Abstract

In the last decade, researchers show that a syllable-based automatic speech recognition (ASR) give higher accuracy than phoneme-based ASR for English, Tamil, and some other languages. In this research a syllable-based ASR is developed for Indonesian, a syllable-rich language with 3.20 syllables per word on average (standard deviation 0.41), and be compared to a phoneme-based ASR. Both ASRs are implemented using SPRAAK, an ASR engine developed by ESAT KU Leuven, with Hidden Markov Model (HMM)-based acoustic model and trigram language model. Evaluation on 5,439 words read-speech corpus shows that monosyllable-based ASR give word accuracy 76.57%, significantly higher than the monophone-based ASR with accuracy 63.36%. It means that monosyllable-based ASR produces absolute improvement of word accuracy by 13.21%. The monosyllable-based ASR can be extended to bisyllable or trisyllable to improve the word accuracy. However, huge bisyllable or trisyllable acoustic models should be developed and managed efficiently using an advanced method.

Topic: Computer Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=26


4.

Balanced Sentence Set Based on Syllables and Punctuations using Greedy Algorithm
Bagus Nugroho Budi Nurtomo, Suyanto

Telkom University


Abstract

A read speech corpus used to train a syllable-based automatic speech recognition system should be collected using an optimum sentence set balanced on syllable and punctuation. The optimum sentence set is commonly extracted from millions unique sentence using an optimization algorithm to get minimum number of syllables with balanced frequencies. A widely used optimization algorithm called Least-to-Most (LTM) Greedy algorithm focuses on minimizing the number of syllables, but ignores balancing their frequencies. In this paper, two schemes are proposed to improve the performance of LTM Greedy. The first scheme is designed to reduce the number of sentences and the second one to balance syllable frequencies. Evaluation on a mother sentence set of 10 million Indonesian sentences shows that those schemes perform well as they are designed. A simple Pareto optimization is applied to get the optimum extracted sentence sets which are better or, at least, equivalent to LTM Greedy algorithm for both monosyllable and bisyllable regarding to the number of sentences as well as syllables frequencies.

Topic: Computer Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=28


5.

Authentication Security in Radio Frequency Identification with IDEA Algorithm
Heri Nurdiyanto(a), Robbi Rahim(b*), Rahmat Hidayat(c), Putri Harliana(d), G Gunawan(e), Hikmah Adwin Adam(e), Yance Sonatha(c), Meri Azmi(c)

a) Student of Technology and Vocational Education, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia
b) School of Computer and Communication Engineering, Universiti Malaysia Perlis, Malaysia
c) Department Information Technology, Politeknik Negeri Padang, Padang, Indonesia
d) Department of Informatics Engineering, Sekolah Tinggi Teknik Harapan, Medan, Indonesia
e) Department of Computer Engineering and Informatics, Politeknik Negeri Medan, Medan, Indonesia
*usurobbi85[at]zoho.com


Abstract

Data security on RFID (Radio Frequency Identification) cards for parking security applications need to be applied for more secure security especially on information stored on RFID cards, as well as to improve the security of RFID access authentication and verification, IDEA is a block cipher algorithm fast in the process of encryption and decryption so that in terms of RFID read time does not take a long time, in this research required some tools such as RFID reader, and Arduino Uno R3 and Micro controller Atmega32 for experiments conducted as well as information in the form of text with a length of not more than 1 KB or 1024 characters for every 16 sectors.

Topic: Computer Science and Engineering (E-01)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=18


6.

DECISION SUPPORT SYSTEM OF NUTRITION STATUS AND NUTRITIONAL ASSUME USING TSUKAMOTO AND TOPSIS METHODS
WAHYU SRI MULYANI & AZHARI

GAJAH MADA UNIVERSITY


Abstract

A good nutrient intake in toddlers will play an important role in achieving optimal body growth. It has an effect on the growth of the brain that determines ones intelligence. Intake of nutrients in infants need to be controlled to maintain growth and prevent the occurrence of metabolic diseases. The importance to know the appropriate dosage of nutrition for her toddler makes the author base to do research of decision support system of nutritional needs in toddlers.
The algorithm used in system development is Tsukamoto algorithm for supporting the decision of nutritional status and Topsis algorithm for support of nutritional intake of toddlers. The results showed that method of Topsis 70% data obtained from anthropometry has appropriate nutritional status, 30% of the other data have a shift to the left of anthropometry table. In addition Topsis method can be applied in decision support of proper nutrition selection, it is seen from the input weight given with given output. The system can run normally in smartphones with android operating system.

Topic: Computer Science and Engineering (E-01)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=47


7.

Power Transmission and Distribution Monitoring using Internet of Things (IoT) for Smart Grid
Nur Asyik Hidayatullah, Akhtar Kalam

STATE POLYTECHNIC OF MADIUN


Abstract

In the last decade, much of the attention is made towards introducing the smart systems and appliances to meet the requirement of the century and make the life comfortable. During the same period, electric power sector also made the necessary innovation to compensate the demand of today’s electric supply and to make use of electric resources effectively by introducing the “Smart-Grid”. Smart grid is a part of transformation and reformation in the power industry sectors. Smart grid is a future modern power system that utilizing internet of thing to monitor, control and create various intelligent communications in the electrical system. In this paper, we will first present the fundamental architecture of Internet of Things (IoT). We will then outline the key technologies of IoT for Smart Grid. Finally, the ideas of applied communication and framework of transmission and distribution monitoring based IoT for Smart Grid is discussed. The deployment of IoT technologies in Power System infrastructures would accelerate the smart grid development and enhance the electricity delivery services becoming more robust, attractive, responsive and communicative.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=2


8.

Simulation studies of Highly Efficient micro-hole textured single crystalline silicon solar cell and effect of varying air mass on it.
Sana Zainab (a), Shahzad Hussain (a), Sidra Jabeen (a)

(a) National University of Sciences and technology, Islamabad


Abstract

Efficiency of solar cell greatly depends on input spectrum irradiance and its interaction with solar cell surface. For highly efficient solar cell, absorption of input light should be maximum . Different texturing techniques like inverted pyramid, nano pillars, nano cones etc have been used to increase absorption of light in solar cell. Among them hole surface texturing seems to be most promising technique. In this paper, effect of varying air mass on hole textured solar cells performance is studied. By varying air mass input solar spectrum irradiance is changed which results in a change in output of solar cell .It has been observed that by varying air mass from AM1.0 to AM1.5 efficiency of solar cell decreases due to decrease in input spectrum irradiance and less absorption of light from surface. Results are also compared with plane surface solar cell. Hole textured solar cell showed better performance than plane surface solar cell at normal angle of incidence.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=7


9.

Web-based Monitoring and Controlling of Home Lighting Using Raspberry Pi
Wrastawa Ridwan (a*), Iskandar Z. Nasibu (a), Rahmat D.R. Dako (a), Ifan Wiranto (a)

a) Department of Electrical Engineering - State University of Gorontalo
*wridwan[at]ung.ac.id


Abstract

High human activity leads to often forget to turn off lighting during the daytime, this caused waste of electricity. This research aimed at designing a prototype of home lighting automation, so that waste of electricity can be minimized. The technology used is wireless sensor network technology, i.e. sensors connected in a wireless network. Sensors used is Light Dependant Resistor (LDR) . The data from the sensor is wirelessly sent to the controller (raspberry pi). This data is then used for home lighting automation. The result obtained is the prototype of home lighting automation system with wireless sensor network technology. The long-term significance of this research is to build a prototype of home automatic system which wireless sensor network-based. The automation here includes lighting, security systems (theft and fire hazards) as well as web-based automatic home monitoring and controlling.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=11


10.

Comparison Analysis Of Passive Repeater Links Prediction Using Methods: Barnett Vigants & ITU Models
Alfin Hikmaturokhman1, Ade Wahyudin1, Alia S. Yuchintya1, Toha Ardi Nugraha2

Institut Teknologi Telkom Purwokerto


Abstract

Microwave is a kind of wireless communication using radio link transmission at high frequency medium between two base stations in cellular systems. Microwave link should be line of sight (LOS) between transmitter and receiver (no obstacle). But, in the real case, there are some obstacles in microwave link between two base stations. Therefore, this paper uses a microwave passive repeater to solve the obstacle problems. The passive repeater is used to repeat information signals by changing the direction of the radio link transmission. This paper implements Barnett Vigants and ITU-R P.530-7/8 methods in passive repeater using software simulation. The difference between two methods is the availability value due to multipath and unavailability value due to rain. On a microwave transmission network using the Barnett Vigants method, resulting higher unavailability value than the use of ITU-R method P.530 7/8. The unavailability value using Barnett Vigants method obtained was 0.023%, it means the outage time of link microwave is 7244 second per year. If compared with metode ITU-R P.530 7/8 method, the unavailability was 0,000087 % or outage time system is for 26 second per year. So the availability using ITU-R P.530 7/8 method is 99, 9999133%.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=19


11.

Comparison of AC and DC LED Light Bulb Efficiency for Residential Electricity
Mohammad Taufik, Taufik Taufik, Brandon Stafford

Universitas Padjadjaran, Indonesia
California Polytechnic State University, USA


Abstract

This paper presents the efficiency of using LED light bulbs when operated under two different residential electrical systems: AC and DC systems. More specifically, this paper looks at whether having a hybrid AC and DC system in a typical urban house will increase the efficiency in operating the LED light bulbs, and thus reducing energy consumption. The efficiency of the LED light bulbs are measured by looking at their lumens per watt output. Several light bulbs at four different wattage levels were tested. For the DC light bulbs, further tests were performed at two voltage levels: 12V and 48V. Results indicate the importance of selecting the proper converters when DC system is to be used in a hybrid AC/DC house. Results also demonstrate the critical choice of DC voltage level when DC electrical distribution system is to be installed inside the hybrid house.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=31


12.

LOAD FLOW ANALYSIS OF 150 KV TRANSMISSION LINE ON SUBSISTEM CIBATU IBT 3 - 4 AND MANDIRANCAN
N. Andini

Electrical Engineering Department
Universitas Pendidikan Indonesia


Abstract

This research is located in PT. PLN (PERSERO) APB West Java by the subject is studying about load flow to figure out voltage, active load flow and load on subsystem. The aim of this research is to find out load flow and understanding the concept of operation pattern at transmission 150 kV system on a load peak at 19:00 WIT. The main reason of this research is to evaluate subsystem which is connected with looping system can operate without having trouble which causing quality decrease and networking reliability on each busbar in order to give advantage in electricity operational system and voltage system value are still in reliability criteria. This research explains about the study of load flow in electrical system in West Java 150 kV in normal condition and on a pattern of the power plant which only 1 unit operated even not operated at all and the entire load is simulated by using ETAP 12.6.0 version by using Gauss-Seidel analysist. The result of the load flow is used to system in normal condition is the lowest voltage bus in Jatiluhur with 134.08 kV. The total power plant power GITET Cibatu is 666.076 MV and 306.178 MVAR, and GITET Mandirancan is 254.606 MW and 65.497 MVAR.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=43


13.

A Three-Level Common-Emitter Current Source Inverter with Reduced Device Count
Suroso, Daru Tri Nugroho and Winasis

Universitas Jenderal Soedirman


Abstract

This paper presents a different configuration of a three-level current-source inverter (CSI). Using the proposed circuit configuration, the total number of the inverter device count is reduced. The gate or base drive power supplies are simpler than the conventional H-bridge current source inverter because almost all of the switching devices are connected at a common -emitter line. In addition, a perfect modified sinus operation can be achieved using this topology compared with the previous circuits topology. Some computer simulation test results are presented in this paper. The computer simulations were carried out using PSIM Software. The simulation results show that the circuit works well generating a three-level output current waveform, which proves feasibility of the proposed inverter circuits.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=46


14.

DESIGNED BAND PASS FILTER MICROSTRIP CASCADE TRISECTION BY OPEN STUB AND DEFECTED GROUND STRUCTURE (DGS) IN FREKUENSI 1800 MHZ
Usup; Tommi Hariyadi; Mukhidin

UPI


Abstract

In this paper designed microstrip band pass filter cascade trisection on the frequency 1800 MHz for 4G LTE applications. Simulations performed using CST Studio suite 2012 substrate material used is Roger RT5880 which has a dielectric constant of 2.2 and a thickness of 1.6 mm. The simulation results show the BPF has a bandwidth of 75 MHz in the 1.8-1.9 GHz frequency with -10.26dB return loss, insertion loss and VSWR -1.29dB 1:28.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=49


15.

LOAD SHEDDING ANALYSIS BECAUSE OF CONTINGENCY DAMAGE (N-2) AT TRANSMISSION LINES 150 KV SUBSISTEM CIRATA
Tasma Sucita, Yadi Mulyadi, Wasimudin Surya

Departemen Pendidikan Teknik Elektro
FPTK Uniersitas Pendidikan Indonesia


Abstract

Cirata subsystem is part of the 150 kV interconnection system 150 kV West Java which is supplied by two units of IBT 500/150 kV with a power capacity of each IBT is 500 MVA. It has 15 transmission line connecting the substation 13 (GI), while the generation units that exist in the subsystem Cirata is PLTPbPatuha with a power of 55 MW and 180 MW hydropower Jatiluhur. The reliability of the power system must be maintained in order to supply power from the generator to the consumer to keep going well. At peak load conditions and contingencies, an electric power system will undergo changes in value, both current and voltage. In this study, which analyzed disorder is a contingency (N-2), a discharge of the two components of transmission line system and generator. The aim is to evaluate and improve the reliability of electric power systems of 150 kV Subsystem Cirata, analyzing the effects of disturbance contingency (N-2) to changes in current and voltage, identify the bus voltage is outside the operating limits, identifying the transmission line that experienced the imposition of critical / exceeds limit operation, and perform load shedding (load sheeding) to overcome the weaknesses of the power system due to disruption contingency N-2. The study was conducted by collecting data required for power flow simulation using Newton-Raphson method in ETAP 12.6.0. The simulation results show the power flow interruption due to voltage profile under the standard contingency SPLN 150 kV + 5% and -10%, and becomes critical channel loading over 50% of the nominal current conductor. while after the release of the load (load sheeding) voltage profile in Subsystem Cirata back normal or standardized SPLN and loading the channel becomes lighter.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=54


16.

Comparative Analysis of Refrigeration Energy Consumption Method Based on IEC 62552: 2015
Prayoga Bakti, Nanang Kusnandar, Qudsiyyatul Lailiyah, Iput Kasiyanto

Research Center for Quality System and Testing Technology,
Indonesian Institute of Science


Abstract

The calculation of the energy consumption of a household electrical device is needed as a basis for determining the star level for labeling the energy of the product. In the refrigerator, the calculation of energy consumption is done when the power and temperature have reached steady state. Based on IEC 62552: 2015, there are three methods for calculating refrigerator energy consumption, there are single measurement method, linear interpolation (two measurements) and triangulation (three times the measurement). This paper reviews the comparison of results between the three methods by using the measurement data of power and temperature of a two-door refrigerator. The results showed that the energy consumption obtained from single measurement methods differed significantly with those obtained from linear interpolation and triangulation methods.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=65


17.

Protoype Pico Hydro - Solar Photovoltaic Hybrid System
I Wayan Ratnata (a), Sumarto (a), Wasimudin Surya Saputra (a)

(a) Departemen Pendidikan Teknik Elektro
Fakultas Pendidikan Teknologi dan Kejuruan
Universitas Pendidikan Indonesia


Abstract

The declining availability of fossil energy resources, especially petroleum and coal, which are still the backbone and main component of electricity generation in Indonesia, and the increasing awareness of efforts to preserve the environment, cause us to look for alternative energy supply capable of exploiting the potential of local energy resources, renewable and environmentally friendly (green energy). Such energy is classified into new and renewable energy, such as water, solar, wind, and so on.

In this research will be built a prototype hybrid power plant that integrates pico hydro and solar photovoltaic. Pico hydro plant built will utilize the river water flow directly behind the Laboratory of Electric Power Engineering, Ministry of Electrical Engineering Education, FPTK-UPI. This hybrid plant prototype will be built in two stages; the first stage or prototype-1 has a capacity of 100 - 200 watts and the second stage or prototype-2 with a capacity of 500-1000 watts. Prototype-1 was used as a study and evaluation material for the manufacture of prototype-2 in hopes of better outcomes.

From the manufacture of prototype-1, it is known that pico hydro produces a maximum power of 86 W (of 100 W capacity) and the solar photovoltaic produces a maximum power of 30 W in clear weather and 23 W in cloudy weather (from 100 W capacity). Pico hydro plant encountered a number of obstacles that interfere with system performance, such as dirty water and lots of waste. In this prototype-1 hybrid power plant, the electrical energy from the pico hydro plant in the form of alternating current electric energy, having been first converted to direct-current electric energy and then combined with the output of solar photovoltaic (in the form of direct-current electric energy ) and then stored in the battery. In this combination, the input voltage to the battery is in the range of 12-13 V and the current 2 - 3 A.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=72


18.

Optimization of data communication on ALDEBARAN device with application of HTTP and MQTT protocol
Fitya Luthfi(a*)

a) Electrical Engineering, Universitas Pendidikan Indonesia
Jalan Dr. Setiabudhi no 229 40153, Indonesia
*fityaluthfi[at]student.upi.edu


Abstract

Networks in the IoT world can be built through protocols with oneM2M standards including HTTP and MQTT protocols. On the device ALDEBARAN HTTP protocol has been applied as a protocol to communicate with ANTARES platform but by using this protocol there is a long data transmission delay of about 5 seconds to 10 seconds and also the bandwidth used is relatively large because HTTP has a high protocol overhead that needs to be optimized by applying the MQTT protocol combined with several data transmission algorithms, the parameters obtained will be compared and analyzed to obtain the most optimal combination of protocols and algorithms. The result of this research is MQTT protocol can be applied to ALDEBARAN device and data communication with platform become more optimal.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=73


19.

Designing of Network System in A Real-time of Power Log For Solar Cell
R. R. H. Putra, D. Wahyudin, T. Sucita

Universitas Pendidikan Indonesia


Abstract

The application of Information Technology (IT) has been growing rapid recently. In every sectors are able to be applied of IT to do operating and monitoring. In electrical engineering, IT utilized to monitor flowing power and stored electrical energy which is produced by solar cell. Electrical energy needs to be monitored in order to keep energy stored. Mostly, monitoring use common energy meter, they only display measurement values. It is unable to observe past measurement. Single Board Computer (SBC), microcontroller, sensors, and transceivers are used in logging electrical power on solar power plant. These nodes are connected wirelessly. By integrated them in a system, SBC acts as server and serve wireless access point to display collected data to user by using wireless user device.

Topic: Electrical Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=75


20.

Feasibility of Energy Sharing Based On-Grid Tie Solar Power for Green Campus in Untirta Banten
Suhendar (a*), Anggoro S. Pramudyo (b), Alif Maulana (c), Harry Sudibyo (d), Widyawan (e)

a) Electrical Engineering Department, University of Sultan Ageng Tirtayasa
Jl. Raya Jakarta Km. 04 Pakupatan Serang Banten
* suhendar[at]untirta.ac.id
b) Electrical Engineering Department, University of Sultan Ageng Tirtayasa
c) Electrical Engineering Department, University of Sultan Ageng Tirtayasa
d) Electrical Engineering Department, University of Indonesia
e) Electrical Engineering Department, University of Gadjah Mada


Abstract

It is necessary to create an alternative method to resolve the lack of electrical energy. The absorption of solar energy use solar cell can generate direct current electricity and it seems to be a promising technology. Currently, solar power is environmental friendly and infinite source of energy and can be utilized to supply the load and reduce the electricity supply from PLN. Therefore this paper focuses on load sharing the electricity between the solar system with PLN. What equipments are suitable for sharing electrical power effectively. On-Grid Tie (OGT) be proposed to sharing energy between electricity of solar cell with PLN.
It is important to use OGT systems for consumers with large electrical load capacity. It works directly from the solar panel system without going through the battery so as to reduce investment and maintenance costs. It works in sync and automatically shares the load between the solar panel system as the main and PLN as a backup. This system is very suitable for use in tropical areas that only have two seasons throughout the year. The joint use of OGT with killo Watt Hours Exim (kWH-Exim) provides benefits for both consumers and PLN. In the future, implementation of the system will be the solution of electricity scarcity and will given compensate 40% - 65% the electricity bill. The technical principle of the proposed OGT Solar Power has been feasible to implemented. For long-term projections will create a green campus in University of Sultan Ageng Tirtayasa, Banten.

Topic: Electrical Engineering (E-02)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=20


21.

RELIABILITY EVALUATION OF POWER DISTRIBUTION SYSTEM WITH RELIABILITY INDEX ASSESMENT (RIA)
Tasma Sucita, Yadi Mulyadi, Chris Timotius K

Departemen Pendidikan Teknik Elektro
FPTK Uniersitas Pendidikan Indonesia


Abstract

Distribution network system reliability is a measure of the level of service of the system of electricity supply to consumers. This study aimed to get some reliability index value of the electricity distribution network system at PT PLN (Persero) APJ Bandung, namely the failure rate, the average output time, the average annual unavailability, SAIFI, SAIDI, CAIDI, ENS and then AENS. These results will be used as a reference for determining the level of reliability of the system. Search reliability index value itself is done by way of basic data recap interference on each unit in the network (UPJ) and then calculating the index of reliability by using formulas reliability index. The results of this study, the value of reliability indices SAIFI on the system 2.02 disorders / customer / year with a target of 1.27 disorders / customer / year, while the reliability index SAIDI on the system 0.28 hours / customer / year with a target of 0.21 hours / customer / year, with these results show electric power distribution network system of PT PLN (Persero) APJ Bandung could not reach the target reliability especially SAIFI and SAIDI. The results of this study are also expected to give an idea of the level of system reliability of electric power distribution network PT PLN (Persero) APJ Bandung.

Topic: Electrical Engineering (E-02)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=55


22.

Analyzing the Reliability of Disturbance Management System on Indihome PT. Telekomunikasi Indonesia, Tbk
Mayra Zaini Nadhifa, Arjuni Budi Pantjawati

Telecommunication Engineering, Electrical Engineering Departement, Universitas Pendidikan Indonesia


Abstract

Reliability is the ability of a system to perform without a failure in the certain time and condition. The reliability of a system showed by a satisfying performances from the system itself in the mean time and operational condition which has been fixed. Reliability engineering attempts to study, characterize, measure, and analyze the failure and repair of the systems in purposed to improve their operational used by increasing their design life, reducing the failures and safety risk and reducing the termination to increase the availability of the operating time. In this research, the reliability of a disturbance management system in Indihome will be analyzed. The analysis was validated quantitatively using secondary data including failure and repair times and will be evaluated by the parameters Mean time to failure (MTTF) and also the Mean time to repair (MTTR).

Topic: Electrical Engineering (E-02)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=58


23.

IMPLEMENTATION OF VISION BASED LANDING SYSTEM FOR MULTI-ROTOR UAV
Son Ali Akbar, Ismawan Noor Ikhsan, Jihad Rahmawan, Riky Dwi Puriyanto, Nuryono Satya Widodo

Electrical Engineering Department, Faculty of Industrial Technology, Universitas Ahmad Dahlan


Abstract

Multi-rotor is been realize with unique functions and automatically control to help many sectors that like aerial, military also agriculture fields. That is familiar working system by take-off and landing of horizontal and vertical positioning. This research is develop controlling technique for movement landing positioning of multi-rotor based image recognition. A vertical take-off and landing (VTOL) aircraft such as quad-copter is utilized to detect hole of landing territory. The flight control system is made using high dimension of digital camera integrated with odroid minicomputer are proceed landmark as seen mainland for controlled by axis-yaw rotor and color matching. In our result is show of aircraft motion and land contour that accurately recognized.

Topic: Electrical Engineering (E-02)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=71


24.

BREAKDOWN VOLTAGE STUDY OF VIRGIN COCONUT OIL AS A SUBSTITUTE FOR TRANSFORMER INSULATING LIQUID
Asep Ahmad Ruri Irwanto; Nana Heryana

UNIVERSITAS PENDIDIKAN INDONESIA


Abstract

The usage of fossil oil as an insulating liquid of transformer is wide. In the event when the fossil oil is depleted, the insulating liquid made of alternative material must be employed. This study determine the suitability of virgin coconut oil as an insulating liquid of transformer. The breakdown voltage of virgin coconut oil is tested by applying high voltage AC at 50 Hz. The test conducted using SPLN 49-1:1982 which refer to IEC 60156 as a test standard. The test were conducted at electrical engineering high voltage laboratory of Universitas Pendidikan Indonesia. The test conducted using half-spherical and half-spaced electrodes 2.5 mm and 4.5 mm. The test result shows that penetration value of virgin coconut oil is 22.56 kV/2.5 mm which is less than SPLN standard at 30 kV/2.5 mm. From the result, author conclude that virgin coconut oil is not suitable to be used as a insulating liquid of transformer substitute.

Topic: Electrical Engineering (E-02)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=74


25.

Implementation of Optimal Control on Speed Control Quanser DCMT with Linier Quadratic Regulator (LQR) Method based on Microcontroler Arduino
Agus Ramelan

School of Electrical Engineering and Informatics
Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
agusramelan16[at]gmail.com


Abstract

This article discusses a linear quadratic regulator (LQR) controller which applied to control speed of a quanser dc motor controller (DCMT). This research aims to design and make an optimal control law with LQR method for a linear system. The system design is divided into two parts, there are hardware and software. The hardware consists a Quanser DCMT kit and an Arduino Uno. The software design includes Simulink MATLAB and Arduino IDE programming. The quanser dcmt to be controlled needs to know its transfer function to be changed into state space form so that it can be entered into the calculation of LQR method. In the design of the optimal control technique LQR to adjust the speed of the Quanser DCMT, performance index optimization is done by adjusting the value of weighting matrixs Q and R, which can produce the feedback matrix K and the optimal tracking matrix L for Quanser DCMT performance index. The result showed that the Quanser DCMT can reach the stability point on each desired setpoint. The parameter stability is measured lies in the characteristics of the system that is in the form of rise time, settling time, error state, and over shoot.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=6


26.

Estimation of Elbow Joint Angle Based on Electromyography Using the Sign-Slope Change Feature and Kalman Filtering
Triwiyanto, O. Wahyunggoro, H. A. Nugroho, Herianto

Department of Electromedical Engineering, Health Polytechnic of Surabaya, Ministry of Health, Indonesia


Abstract

Electromyography (EMG) has widely used in the field of biomedical engineering as a control signal for prosthetic devices and robotic exoskeleton. High accuracy in the prediction of the limb joint is very important to determine the effectiveness of the system. In this study, we propose a new algorithm to improve the elbow joint angle prediction based on electromyography using Sign Slope Change (SSC) feature extraction and Kalman filter (SSC-KF). The EMG signal was collected at the biceps muscles. The EMG was extracted using SSC feature to get the prediction of the elbow joint angle. The accuracy of the prediction of the elbow joint angle was improved by using Kalman filter. In this study, the SSC-KF algorithm can predict the elbow joint angle with high accuracy. The Pearson’s correlation coefficients were 0.95±0.02, 0.96±0.01, and 0.96±0.015 for the motion period of 12 seconds, 8 seconds, and 6 seconds, respectively. Root Mean Square Errors were 10.37º±1.72º, 9.89º±1.11º, and 9.99º±2.2º, for the motion periods of 12 seconds, 8 seconds, and 6 seconds respectively. This SSC-KF algorithm can predict the elbow joint prediction by using a single lead electrode from biceps muscle.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=8


27.

Low Cost Omnidirectional Camera System
Muhammad Renaldy, Yuski Maolid Rizki Faozan, Sarosa Castrena Abadi

Universitas Pendidikan Indonesia


Abstract

this paper describes the omnidirectional camera system we have created. The system is built at low cost with satisfactory results. This camera use a spherical mirror and webcam camera. This camera can see 360 degrees horizontally and 135 degrees vertically. This camera is used for soccer robots we have developed. This camera can view a ball from a radius 5 meters with a image processing algorithm.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=13


28.

Development of A Secured Room Access System based on Face Recognition using Raspberry Pi and Android based Smartphone
Asep Najmurrokhman*, Kusnandar, Arief Budiman Krama

Dept. of Electrical Engineering, Universitas Jenderal Achmad Yani,
Jl. Terusan Jend. Sudirman PO Box 148 Cimahi 40533, Indonesia
*asepnajmu[at]yahoo.com


Abstract

Nowadays, security issues are an important part of everyday life. A vital link in security chain is the identification of users who will enter the room. This paper describes the prototype of secured room access control system based on face recognition. The system comprises a webcam to detect faces and a solenoid door lock for accessing the room. Every user detected by the webcam will be checked for compatibility with the database in the system. If the user has access rights then the solenoid door lock will open automatically and the user can enter the room. If the system does not recognize the face of the user, then the data will be sent to the master user via Android-based smartphone that installed certain applications. If the user is recognized by the master user, then the solenoid door lock will be opened through the signal sent from the smartphone. However, if the user is not recognized, then the buzzer will alert. The main control circuit on this system is Raspberry pi. The software used is Open CV Library which is useful to display and process the image produced by webcam. In this paper, we employ Haar Cascade Classifier in an image processing of user face to produce the face detection with high accuracy.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=15


29.

IMPLEMENTATION OF INSTRUCTIONAL MEDIA TRAINER FIBER OPTIC SENSOR SYSTEM ON SENSOR AND ACTUATOR LEARNING IN SMKN 1 KATAPANG BANDUNG
Yuski Maolid Rizki Faozan; Prof. Dr. H. Budi Mulyanti, M.Si.; Didin Wahyudin, Ph.D.

Universitas Pendidikan Indonesia


Abstract

Instructional media trainer of fiber optic sensor system is media that utilize optical fiber as props in the lessons sensors and actuators. The purpose of this research is the study of students learning outcomes on subjects sensor and actuator by use trainer fiber optic sensor system and student’s responds about media has used. The method used in this research is experimental design, with the pre-experimental design. This research was conducted in class XI technique electronics industry (TEI) 1 in SMKN 1 Katapang Bandung with 38 students. The research results show that there has been increasing study results students who demonstrated by the strengthening ( the gain ) study results students on the cognitive domain an average of 0,64 in the medium category. In the domain affective and in the domain psychomotor the average value on the good predicate. All of students gives a very positive responds about implementation of this media. From the results of this research can be stated that using fiber optic sensor system could improve student learning outcomes and students’s response is very positive to the media used. Thus we can conclude that fiber optic sensor system on the subjects of sensor and actuator can improve learning outcomes students and very use full to be used in vocational school.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=16


30.

IMPLEMENTATION OF INSTRUCTIONAL MEDIA TRAINER FIBER OPTIC SENSOR SYSTEM ON SENSOR AND ACTUATOR LEARNING IN SMKN 1 KATAPANG BANDUNG
Yuski Maolid Rizki Faozan; Prof. Dr. H. Budi Mulyanti, M.Si.; Didin Wahyudin, Ph.D.

Universitas Pendidikan Indonesia


Abstract

Instructional media trainer of fiber optic sensor system is media that utilize optical fiber as props in the lessons sensors and actuators. The purpose of this research is the study of students learning outcomes on subjects sensor and actuator by use trainer fiber optic sensor system and student’s responds about media has used. The method used in this research is experimental design, with the pre-experimental design. This research was conducted in class XI technique electronics industry (TEI) 1 in SMKN 1 Katapang Bandung with 38 students. The research results show that there has been increasing study results students who demonstrated by the strengthening ( the gain ) study results students on the cognitive domain an average of 0,64 in the medium category. In the domain affective and in the domain psychomotor the average value on the good predicate. All of students gives a very positive responds about implementation of this media. From the results of this research can be stated that using fiber optic sensor system could improve student learning outcomes and students’s response is very positive to the media used. Thus we can conclude that fiber optic sensor system on the subjects of sensor and actuator can improve learning outcomes students and very use full to be used in vocational school.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=17


31.

Noise Properties of the Faraday Effect Measurement Systems
Djati Handoko, Affan Hifzhi, Levin Soedarmawan, Mohamad Aman, Arief sudarmaji,

Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Indonesia


Abstract

Nowadays, nanomagnetic devices have a main role in computer industries. To observe magnetic features of the nanomagnetic device, Magneto-optical effects such as Kerr effect and Faraday effect can be used. We report the fabrication of the Faraday effect measurement setup for characterization of nanomagnetic elements. With achievement of low noise measurement configuration by precision electronic measurements, Faraday effect was observed. The essence of the experiment is to measure a light intensity that is transmitted from the transparent magnetic material. Light intensity is measured by a photodiode detector (Hamamatsu S5870) which produced the laser-induced photocurrent. Using transimpedance amplifier, the signal is converted to the voltage which is measured by the lock in amplifier (Stanford Research SR810). By performing the measurement at different lock-in frequencies and different analyzer angles, we systematically analyzed various random noise sources and their effect to the signal to noise ratio. The change of the Faraday effect is measured with variation of the external magnetic field.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=30


32.

Design and Data Acquisition of Polarimeter System Based on Microcontroller for Faraday Rotation Instrumentation
Muhammad Rizki Nurriansyah; Arief Sudarmaji; Djati Handoko

Universitas Indonesia


Abstract

In this research, an optical system is made and aims faraday rotation apparatus. This system was designed and made to measure the angle of the vibrating field of analyzers and light intensity, where as the analyzer angle setting is done by using a DC motor coupled to the shaft encoder, for the light intensity the writer measured it with a lux meter IC BH1750. Pulses from the shaft encoder and the data from the IC BH1750 is being acquired using a microcontroller. In this research, the writer used three laser light as the sources which are red, green, and blue, to change the color and wave length the sources are being controlled by microcontroller. The writer conclude that there are transfer function (θ = 0.01p + 0.1), where (θ) is the swivel angle analyzer and (p) is the pulse that is generated from the shaft encoder. All of the control system is controlled by a microcontroller that is integrated with the computer.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=32


33.

Design and Data Acquisition of Polarimeter System Based on Microcontroller for Faraday Rotation Instrumentation
Muhammad Rizki Nurriansyah; Arief Sudarmaji; Djati Handoko

Universitas Indonesia


Abstract

In this research, an optical system is made and aims faraday rotation apparatus. This system was designed and made to measure the angle of the vibrating field of analyzers and light intensity, where as the analyzer angle setting is done by using a DC motor coupled to the shaft encoder, for the light intensity the writer measured it with a lux meter IC BH1750. Pulses from the shaft encoder and the data from the IC BH1750 is being acquired using a microcontroller. In this research, the writer used three laser light as the sources which are red, green, and blue, to change the color and wave length the sources are being controlled by microcontroller. The writer conclude that there are transfer function (θ = 0.01p + 0.1), where (θ) is the swivel angle analyzer and (p) is the pulse that is generated from the shaft encoder. All of the control system is controlled by a microcontroller that is integrated with the computer.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=33


34.

Development of Magnetic Generator Data Acquisition System based on Microcontroller for Faraday Rotation Instrumentation
Luthfi Azmaiza Hadsyah, Arief Sudarmaji*, Djati Handoko**

Departement of Physics, Universitas Indonesia
Kampus UI Depok, Depok, 16424, Indonesia
luthfi.azmaiza[at]sci.ui.ac.id

*Corresponding author: arief.sudarmajmy[at]sci.ui.ac.id
**co-Corresponding author: djati.handoko[at]ui.ac.id


Abstract

This study is conducted to build magnetic generator to produce magnetic field with which the effect of the changing magnetic optic caused by the generated magnetic field on a sample between the two groups of coil could be quantitatively studied. The uniformity of the magnetic field between the two groups in three dimension also examined. This study produced a transfer function B vs. I is 0,101i - 0.01. The magnetic generator is consisted of auxiliary coil, which is reversed for each groups, that is integrated with a ferromagnetic material as the core to amplify the magnetic induction. The current supplied to the system is up to 10 A and generate up to 1 T which can be controlled via microcontroller-computer communication protocol. The developed magnetic generator will be used in another study to generate magnetic field for faraday rotation instrumentation.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=37


35.

Development of Fiber Optic Chemical Sensor for Monitoring Acid Rain Level
Budi Mulyanti (a), Yuski Maolid Rizki Faozan (a), Wahyu Sasongko Putro (b*), Roer Eka Pawinanto (a), Agus Heri Setya Budi (a), Gandi Sugandi (c), Arjuni Budi Pantjawati (a)

(a) Department of Electrical Engineering Education, Universitas Pendidikan Indonesia (UPI), 40154, Bandung, West Java, Indonesia.

(b) Department of Science Atmospheric and Planetary, Institut Teknologi Sumatera (ITERA), 35365, Jati Agung, Lampung, Indonesia.
*wahyu.putro[at]staff.itera.ac.id

(c) Electronics and Telecommunication Research Centre, Lembaga Ilmu Pengetahuan Indonesia (LIPI), Jl. Jend. Gatot Subroto 10, 12710, Jakarta, Indonesia


Abstract

Acid rain event is very dangerous for human activity, especially in Indonesia. Here, acid rain has consistently attacked over five cities in Indonesia such as Jakarta, Manado, Pontianak, Bogor, and Surabaya with average pH level 4.22 to 6.34 in July 2010. Thus, in this study aim to develop Fiber Optic Chemical Sensor (FOCS) for monitoring acid rain level over five cities in Indonesia. The development of FOCS is used evanescent wave type and photodiode FDS10X10 to monitor acid rain quality. In this study, the Optical Power Meter (OPM) is used as a validator equipment to capture FOCS capability. The result shows absorption loss was successfully detected using OPM and photodiode FDS10X10 in FOCS evanescent wave type. Here, the maximum value ammonia mass over acid rain level has successfully detected with value range 7.12 dBm to 8.34 dBm and 7.51 dBm to 7.71 dBm using photodiode FDS10X10 and OPM, respectively. The good result over validation process shows FOCS has successful working with strong correlation 0.78 to monitor acid rain level.

Topic: Electronics Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=42


36.

Design of Process Control System in Water Cooling Processing Interaction Tank using Integral Control and Robust Control in The Tire Industry
Devi Handaya (a*), Prayoga Bakti (b), Yayan Prima Nugraha (c)

a) Electronic Engineering, Gajah Tunggal Polytechnic
Jl. Gatot Subroto KM. 7, Tangerang, Indonesia, 15135
*devi.handaya[at]poltek-gt.ac.id

b) Research Center for Quality System and Testing Technology, Indonesian Institute of Science
Gedung 417, Jl. Kawasan Puspitek, Muncul, Setu, Tangerang Selatan, Indonesia, 15314
prayoga.bakti[at]lipi.go.id

c) Control System and Computer Laboratory, School of Electrical Engineering and Informatics, Bandung Institute of Technology
Jl. Ganesha no. 10 Bandung, Indonesia, 40132
yans.okx[at]gmail.com


Abstract

This laboratory based research build a process control system as water level scanner in interaction tank used for water cooling. The control valve parameter based on water level between tanks are interacted. The control method of tank valve ratio choosed in this reasearch is integral control and robust control. The desired control specification for maximum overshoot is 10%, peak time is 1 second, and error steady state is 0. The design process executed in physic system modelling step and system design criteria. Experiment executed using Matlab Script and Matlab Simulink. The simulation result will be compared to see an effective performance for processing of water cooling interaction tank control method. The design result for integral control can tracking reference accord to system design criteria and robust control can tracking reference without different experience either the system without disturbance or the system with disturbance. Keyword: water cooling tank interaction, process control, integral control, robust control

Topic: Electronics Engineering (E-03)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=23


37.

DESIGN AND SIMULATION FIBER OPTIC FOR AMMONIA SENSOR APPLICATION
Jatiprima Handali; Yuski Maolid Rizki Faozan; Prof. Dr. H. Budi Mulyanti, M.Si.; Dr. Gandi Sugandi, S.T., M.T.

Universitas Pendidikan Indonesia


Abstract

This article deals with design and simulation a fiber optic which can detect ammonia concentration in water. This design uses an intrinsic sensor that is core of fiber optic face with ammonia water. Utilizing different refractive index at each ammonia concentration that affects the loss of power at the fiber optic output. The material of fiber optic used is SiO2 which is varied with various ammonia water as cladding. The design and structure fiber optic single mode sketch and simulated in Lumerical MODE Solution program. Fiber optic is designed with 1 mm sensing line and 10 μm diameter. The results obtained for each cladding is a shift in the value of loss of power at the fiber optic output. The more value of the concentration in ammonia the greater loss of power at the fiber optic output. The loss power occurs because as the greater value of concentration of ammonia water closer to the core refractive index value.

Topic: Electronics Engineering (E-03)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=52


38.

Study of Enhanced Laser Beam Deflection Measurement System: Time Observation Varied
Levin Soedarmawan, Syukur Pambudi, Affan Hifzhi, Arief Sudarmaji, Djati Handoko

Department of Physics, FMIPA Universitas Indonesia
Depok 16424, Indonesia


Abstract

Increasing sensitivity and signal to noise ratio of conventional laser beam deflection measurement system is an interesting topic in structure material and instrumentation research. In this work, the laser beam deflection measurement system are enhanced and manage to determine diffusion coefficient of liquid - liquid material. The enhanced laser beam deflection measurement system is working well based on Wiener method. Sodium chloride aqueous solution and distilled water poured in a glass cell then illuminated by the laser beam tilted 45° to the vertical, exhibit a reflection of straight line light on the screen. The reflection pattern on screen captured by camera and processed with image processing program. In order to have comprehensive discussion of diffusion coefficient behaviour, the time observation is varied. Image processing and calculation have been completed to determine refractive index gradient and the diffusion coefficient of Sodium chloride, the results are found in a good agreement with coefficient values specified in the literature.

Topic: Electronics Engineering (E-03)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=68


39.

IMPLEMENTATION OF INSTRUCTIONAL MEDIA TRAINER FIBER OPTIC SENSOR SYSTEM ON SENSOR AND ACTUATOR LEARNING IN SMKN 1 KATAPANG BANDUNG
Yuski Maolid Rizki Faozan; Prof. Dr. H. Budi Mulyanti, M.Si.; Didin Wahyudin, Ph.D.

Universitas Pendidikan Indonesia


Abstract

Instructional media trainer fiber optic sensor system utilizes optical fiber as props in the lessons sensors and actuators. The purpose of this research order to know the increased study results students on subjects sensor and actuator by use trainer fiber optic sensor system and student’s responds about media has used. Methods used in this research is the method experimental design, with the pre-experimental design. This research was being conducted in class XI technique electronics industry (TEI) 1 in SMKN 1 Katapang Bandung with 38 students. The research results show that there has been increasing study results students who demonstrated by the strengthening ( the gain ) study results students on cognitive domain an average of 0,64 in the medium category. In domain affective and in domain psychomotor the average value on the good predicate. Overall students gives a very positive responds about implementation of this media. From the results of this research can be stated that using fiber optic sensor system can improve student learning outcomes and students’s response is very positive to the media used. Thus we can conclude that fiber optic sensor system on the subjects of sensor and actuator in SMKN 1 Katapang Bandung can improve learning outcomes students and very use full to be used in vocational school.

Topic: Electronics Engineering Education (ED-03)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=12


40.

IMPLEMENTATION OF COUNCELING SYSTEM FOR STUDENT GUARDIANSHIP USING CASE BASED REASONING (CBR) INFERENCE
Munirah Muslim, Aslan Alwi

Muhammadiyah University of Ponorogo


Abstract

The System based Case Based Reasoning (CBR) is a system that uses case-based inference methods, in this case it’s identical to previous experience trips used to predict solutions for some new problems. In this study, a counseling system based CBR was developed, which is expected to support and represent the guardian lecturers to face students in counseling by displaying an interface that can be accesed by students, where students can accept the solution of any kind of problems encountered in the lecture. In this counseling system available knowledge base is absorbed from the knowledge of lecturers guardian, where the knowledge base is used by counseling system to provide answers as appropriate when the students do guidance / guardianship to lecturers guardian. Based on the results of recording the counseling data that has been taken and processed to become the basis of knowledge and input into the counseling system using CBR-based algorithm, then will become training data for the system to be able to perform its ability to provide solutions for any exixting trust issues.

Topic: Informatics (E-05)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=51


41.

Short-term Electrical Load Prediction Using Evolving NN
Bambang Lareno, Liliana Swastina

Department of Informatic Engineering
STMIK Indonesia Banjarmasin, Indonesia


Abstract

Short-term electrical load prediction can be approach by neural network analysis. In this paper, a optimized neural network, namely Evolving Neural Network (ENN) has been developed for short term electric load prediction and compared with Wavelet Neural Network (WNN) results. ENN uses a genetic algorithm to optimize the weighting of neural networks. After the feedforward algorithm, the process continues with optimization, instead of the learning process normally applied to the neural network. The proposed algorithm is implemented in MatLab. Data from April 2010 to April 2011 will be used as training data and Data in May 2011 will be used as data checking. The evaluation is done by observing the prediction results of short-term loads from ENN implementation. Performance measurements are performed by observing error that occurs through MSE, MAD and MAPE. In result, ENN expressed better accuracy.

Topic: Informatics (E-05)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=57


42.

A Preliminary Comparative Study of Process Model For Startup In Indonesia
Anung Asmoro1, Lukito Edi Nugroho2, and Selo3

Gadjah Mada University


Abstract

The startup is the catalyst that transforms ideas into products. Innovation is widely recognized as an essential enabler of a competitive start-up, organizational, academic, and enterprise to survive and thrive. However, many of innovation initiatives do not generate satisfactory profit or competitive advantage. The problem does not rest in the invention part or the generation of innovative ideas, but more in the profitable management of the innovation process from an idea to a successful product in the market. This paper puts forward a comparative study of customer-oriented innovation process model Blank, Ries, and Maurya. This article quarry is the most appropriate model and best fit with start-ups samples, and looking for rational reasons to do further research to obtain the innovation process model that more suitable and specific to startups. This study used an explanatory sequential research design in which qualitative and quantitative studies. These data were gathered from 5 startups in Indonesia through Focused GD, interviews, and observations. Substantial evidence supports that Mauryas model is the most appropriate model and best fit with these startups and additional research is needed to formulate a new model that fully supports creative ecosystem industry in Indonesia.

Topic: Informatics (E-05)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=67


43.

Effect of MAPP on the Tensile Strength of Sisal/PMMA Biocomposites
Iman Kurnia Sentosa, Yuda Aria Binangun, Sapwan Noor, Hafiz Syahputra, Sudirman, Harini Sosiati

Department of Mechanical Engineering, Faculty of Engineering, Universitas Muhammadiyah Yogyakarta
Jl. Lingkar Selatan, Kasihan, Bantul, Yogyakarta 55183


Abstract

Natural fiber is one of the potential candidate to be used as a reinforcement biocomposite. In this study, sisal fibers were mixed with Polymethyl Methacrylate (PMMA) with addition of MAPP to improve the compatibility of sisal and PMMA. The biocomposites with fiber loading 30 wt.% and various ratios of MAPP (3 wt.%, 5 wt.% and 10 wt.%) were fabricated by hand lay-up method. Several tests were done to analyze the samples such as tensile test and scanning electron microscopy (SEM) to analyze the bonding between the fibers and the matrix in the biocomposite specimens. Tensile test of biocomposite speciments were conducted according to ASTM D638-01. The results showed that tensile strength of the biocomposite with MAPP ratio of 5% tend to be higher than that of the others with tensile strength of 35,82 MPa. SEM image of fracture surface structure of biocomposites indicates that the addition of MAPP improved the interfacial interaction between sisal fiber and PMMA matrix.

Topic: Materials Manufacturing and Processing

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=4


44.

Effect of Heat Treatment Variation in Drillability of Titanium alloy 6246
Mahros Darsin

University of Jember


Abstract

In general, the easiness of machining is improved when the material is softer. Three heat treatments were carried out to improve drillability of titanium alloy 6Al-2Sn-4Zr-6Mo in compare to the as received (AR) one. They were heated at 870oC for three hours then followed by air cooling, another was heated at the same temperature but followed by water cooling; the third was heat at 985oC then followed by furnace cooling. They were called as HT1, HT2, and HT3 respectively. The hardness of those four conditions was about the same except for the as HT2 which is a bit softer. Microscope observation revealed that AR, HT1, and HT2 result in elongated “primary” alpha grains in an aged transformed beta matrix containing acicular alpha, though the grain size of them are different. Whereas, the HT3 result in transformed beta with prior beta boundaries. While a thin continuous alpha film is present at the grain boundaries. The forces that work during drilling were evaluated. The as HT3 shown as the lowest thrust force work while the others about the same each other. Observation of the chips shown that most of the chips hardness was increased compared to that of the block before drilling.

Topic: Materials Manufacturing and Processing

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=29


45.

Reduced Graphene Oxide/Polyaniline Nanocomposite as Efficient Counter Electrode for Dye Sensitized Solar Cells
Risa Rahmawati S1,3; Veinardi Suendo1; and Rachmat Hidayat2

1Department of Chemistry, Inorganic and Physical Chemistry Research Division, FMIPA, Institut Teknologi Bandung
2Department of Physics, Magnetic and Photonic Physics Research Division, FMIPA, Institut Teknologi Bandung
3Chemistry Education Study Program, FTK, UIN Sunan Gunung Djati Bandung


Abstract

Reduced graphene oxide (rGO) was synthesized using sonication-assisted oxidation of graphite followed by reduction with ascorbic acid as environmentally friendly reductor. The polyaniline was prepared via chemical polimerization of aniline in 0 oC. The rGO and polyaniline were blend in three mass compotitions of 1:3, 1:1, and 4:1 to produced rGO/polyaniline nanocomposites. The rGO/polyaniline nanocomposites were characterized using Raman spectroscopy, Fourier transform infrared spectroscopy and LCR meter. The rGO sheets as the support materials could provide more active sites for the nucleation of polyaniline, where polyaniline acts as conducting support. The rGO/polyaniline nanocomposites was deposited on synthetic graphite substrate laminated the glass substrate and applied as the counter electrode for efficient dye sensitized solar cells (DSSC). The rGO/polyaniline nanocomposite is an efficient counter electrode because of Pt/TCO free. The usage of rGO/polyaniline nanocomposites film as counter electrode in DSSC was demonstrated. The best performance was obtained for rGO/Polyaniline ratio of 4:1. Here, the optimum short circuit current density (Jsc), the open circuit current (Voc), the fill factor (FF), and the overall conversion efficiency under AM 1.5, 100 mW cm−2 illumination are 7.853 mA/cm2, 0.64 Volt, 47.2% and 2.64%, respectively.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=14


46.

The effect of temperature to the formation of the optically active point-defect complex, the carbon G-centre in pre-amorphised and non-amorphised silicon
D. D. Berhanuddin,1,2, M. A. Lourenço,2 R. M. Gwilliam,2 and K. P. Homewood, 2

1. Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, Bangi, 43000 Selangor, Malaysia

2. Advanced Technology Institute, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom


Abstract

The effect of the temperature ranging from cryogenics to room temperature were investigated on the formation of the optically-active point defect called the G-centre. The G-centre as an emissive point defect gained a lot of attention recently due to its sharp zero phonon luminescence peak at a wavelength of 1.28 μm (0.97 eV) with the evidence of lasing occurred in the structure. The emission of the G-centre is attributed to the carbon substitutional–carbon interstitial (CsCi) complex which interacts with silicon interstitials during the damage event. This complex is generated by implantation of carbon and followed by proton irradiation. Prior to the carbon implantation, two of the samples were pre-amorphised by germanium. Photoluminescence (PL) measurements were carried out at temperature ranging from 80 K up to room temperature to observe the intensity of the main peaks. The results confirm that the main peaks of point-defect centre in all of the samples including the G-centre suffer from the temperature quenching. However, the peak intensity for some of the wavelength especially the ones with high FWHM, do perform better at high temperature. The temperature quenching phenomena observed in the point-defect technique is the main problem that needs to be addressed and solved before realizing the method in the all silicon photonic system.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=21


47.

Electrodeposited Ni-TiAlN Composite Coating on Tungsten Carbide: Effect of Surfactant Concentration on Physical and Mechanical Properties
Esmar Budi1,2,*, Iwan Sugihartono1, Yulia Ermadiana1, Dimas Syafindra1, Muhammad Fajrin3

1 Physics Program, Faculty of Mathematics and Science,
2 Physics Education Program, Faculty of Mathematics and Science
3 Material Physics Laboratory, Faculty of Mathematics and Science
Universitas Negeri Jakarta, Jl. Rawamangun Muka I, Jakarta 13220, Indonesia


Abstract

The effects of concentration of Sodium Dodecyl Sulfate (C12H25NaSO4) as surfactant on structure and hardness of electrodeposited Ni-TiAlN composite coating has been investigated. The composites were deposited at fixed current of 3 mA, 12 V for 15 minutes. The electrolyte consists of 0.49 mol/l H3BO3, 0.17 M NiCl26H2O, 0.38 M NiSO46H2O , 2 gr/lit AlN and 2 gr/lit TiN. The concentration of Sodium Dodecyl Sulfate (SDS) was varied into 0.2 , 0.4 and 0.6 gr/lit. The electrodes used were Pt wire as counter electrode, silver (Ag) wire as reference electrode and tungsten carbide (WC) rod as working electrode. The surface morphology and composition of composites were characterized by using Scanning Electron Microscopy (SEM) dan Energy Dispersive Spectroscopy (EDS), respectively. The crystal structure of comosites was characterized by using X-Ray Diffraction (XRD) and the hardness was tested by using hardness Vickers tester. The results showed that a fewer aglomeration was formed on the composite surface for SDS concentration of 0.4 gr/lit. However, the increase of SDS concentration lead to the increase of crystal size and hardness of composite.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=25


48.

The Effects of Silicon on The Hardness and Wear of Ferritic Grey Cast Iron on Shoe Brake of Train
Suryo Darmo, Lilik Dwi Setyana, Tarmono, Nugroho Santoso

Mechanical Engineering of Vocational College Universitas Gadjah Mada


Abstract

Grey cast iron had been used as shoe brakes of train due to its low cost and enough strength. The most problems of grey cast iron of the shoe brake were the variation of hardness and wear rate between the surface and inside of the shoe brake. The small wear rate of the shoe brake resulted in the damage of wheel of the train. The amount of graphite and ferrite increased if silicon content was increased. Increasing silicon content resulted in the increasing hardness of ferrite. The hardness of grafit was low but the wear rate was high. On the contrary, the hardness of ferrite was high, but the wear rate was low. The aim of this research was to obtain the data of the appropriate silicon content within grey cast iron of the shoe brake with the result that the wear rate of the shoe brake was high and the variation of the hardness and the wear rate between the surface and inside of the shoe brake was small. Casting process was done in foundry, while the hardness and wear test were done in material laboratory. The addition of silicon was done at the same liquid of grey cast iron, without the addition of the other elements. The data of the composition of the grey cast iron was in carbon equivalent. The research was done at the carbon equivalents of 4.18%, 4.44%, 4.64%, 4.80%, and 4.54%. The largest wear rate and the small variation of the hardness and the wear rate of the shoe brake was when carbon equivalent was 4.64% . The largest wear rate was of 0.00011 mm3/kg.m and the average hardness was of 95.58 BHN.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=27


49.

Wear prediction of UHMWPE acetabular cup against cp titanium femoral head in a hip joint simulator
Handoko 1,2; Suyitno 2; Rini Dharmastiti 3; Rahadyan Magetsari 4

1 Department of Mechanical Engineering, Vocational School, Universitas Gadjah Mada.
2,3 Department of Mechanical and Industrial Engineering,
Faculty of Engineering, Universitas Gadjah Mada.
4 Department of Orthopedics and Traumatology, Sardjito General Hospital
and Faculty of Medicine, Universitas Gadjah Mada.


Abstract

Ultra high molecular weight polyethylene (UHMWPE) is a biomaterial used as the bearing materials in the human hip joint prostheses for decades. The main disadvantage is its wear resistant. The products should be in service in the lifetime of the patients. In order to solve the problems, experimental and computational tribological assessments should be made. The aim of this research is to predict the wear volume of the UHMWPE acetabular cup sliding against commercially pure titanium (cp Ti) in a hip simulator. The reason to choose cp Ti is its highest biocompatibility compared with the other femoral head metals such as cobalt chrome, titanium alloy and 316L stainless steel. Computation processes use the Abaqus finite element commercial software and a custom made Python script for the contact mechanics and Archard wear model calculations. The models are UHMWPE acetabular cup and 32 mm cp Ti femoral head. Wear computations use an assembly of the models in a biaxial rocking motion hip simulator with a 46o total excursion. Sliding simulation between the models was in a rotational motion of 60 cycles per minute. Wear calculations conducted in five steps of 200 thousands cycles to obtain a one million cycles cumulative polymer wear volume. The geometries of the models were updated in every step. Wear factor and verifications use the experimental data from Röstlund. Results show a good agreement between the numerical results and experimental data. Numerical errors are in the range of 20 to 30 percents. The computational wear prediction method can be used as the alternative of the long duration and costly biotribological experimental tests.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=34


50.

Characteristics of La1-xSrxFeO3 (x=0 and 0.1) Ceramics Prepared By Coprecipitation Method For Ethanol Gas-Sensing Application
M T Ulhakim 1), D G Syarif 2), A Setiawan 1), E Suhendi 1)

1) Program Studi Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung, Indonesia
2) PSTNT BATAN, Jl. Tamansari No. 71, Bandung, Indonesia

Email: endis[at]upi.edu


Abstract

Characterization of ethanol gas-sensing based La1-xSrxFeO3 (x=0 and 0.1) thick film were studied. In this work, La1-xSrxFeO3 (x=0 and 0.1) powders were prepared by coprecipitation method and made in the form of thick films with screen printing techniques and tired at 600℃ for 2 hours. XRD analysis showed that crystalized compounds had a cubic structure. SEM analysis showed that Sr-doped caused the grain size of LaFeO3 to decreased. Electrical properties analysis showed that thick film based 10% Sr-doped LaFeO3 had better characteristics and exhibited the higher sensitivity with operating temperature of 295℃-300℃.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=35


51.

Characterization of Optical Magnetic Properties, and Measurement of Optically Active Material Concenteration
Arnold Fedriko, Arief Sudarmaji*, Djati Handoko**

Department of Physics, Universitas Indonesia
Kampus UI Depok, 16424, Indonesia
*arief.sudarmajmy[at]sci.ui.ac.id
**djati.handoko[at]sci.ui.ac.id


Abstract

In this study, conducted testing on the concentration of magneto optical properties of the material optically active substances using faraday rotation. Faraday rotation is the process spinning vibrating field of light passing through a material, because the magnetic field B. The phenomenon described optically active materials when hydrolyzed can also play poralisation field and influenced by the concentration and length of the material. If the event is done the opposite, while playback of the plane of polarization in faraday rotation can be set to provide certain B then hydrolysis can specify the substance characterization. In this study, optically active substances used are fructose and glucose, fructose vibrating rotating field to the left, while glucose rotate the plane shakes to the right. In this study, faraday rotation apparatus used has a magnetic field up to 1 tesla and has four wavelengths of red, green, blue, purple. For characterization of the glucose at a concentration of 10% yield Verdet constant at 650 o/mT.m, at a concentration of 30% yield Verdet constant at 387 o/mT.m, whereas the concentration of 50% yield Verdet constant at 710 o/mT.m. For characterization of the glucose at a concentration of 10% yield Verdet constant of 655 o/mT.m, at a concentration of 30% produces Verdet constant of 460 o/mT.m, whereas the concentration of 50% produced 230 o/mT.m. In this research to get characterisation fructose and glucose obtained transfer function.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=38


52.

Fabrication and Characterization of Thick Film Ceramics La0,9Ca0,1FeO3 for Ethanol Gas Sensor using Extraction of Fe2O3 from Yarosite Mineral
N I Ariyani 1, D G Syarif2 and E Suhendi1

1 Program Studi Fisika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi 229 Bandung 40154, Indonesia
2 PSTNT BATAN, Jl. Tamansari 71 Bandung 40132, Indonesia


Abstract

Fabrication of La0,9Ca0,1FeO3 thick film ceramics using Fe2O3 powder extracted from yarosite mineral as ethanol gas sensor has been successfully performed. Fe2O3 powder extracted from yarosite mineral as the basic material in this research can increase the added value yarosite mineral. Fe2O3 powder and 10% mol of CaO dissolved in HCl were mixed with LaCl3.7H2O powder dissolved in aquades. The solution of Fe2O3, LaCl3.7H2O and CaO mixed and then precipitate using NH4OH. The La0,9Ca0,1FeO3 precipitate was calcined at temperature 8000C for 2 hours to produce La0,9Ca0,1FeO3 powder. La0,9Ca0,1FeO3 powder was crushed and mixed with Organic Vehicle to produce a La0,9Ca0,1FeO3 paste. Using the screen printing technique, the La0,9Ca0,1FeO3 paste is coated on the alumina substrate and then burned at 6000C for 2 hours to produce the thick film ceramic La0,9Ca0,1FeO3. Based on XRD and SEM characterization data, the thick film ceramics La0,9Ca0,1FeO3 were made even though some of Fe2O3 did not react and the grain size is almost uniform, and there are many pores. Measurement of electrical characteristics shows a good response to the presence of ethanol gas, has high electrical sensitivity value and low optimum working temperature that is in the range 2900C - 2950C.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=39


53.

Surface Modification, Surface Roughness, and Surface Hardness of 316L Biomaterial by Shot Peening at Different Shot Distance and Shot Angle
Erich Umbu Kondi Maliwemu [1] * , Viktor Malau [2], Priyo Tri Iswanto [3]

[1, 2, 3] Department of Mechanical and Industrial Engineering, Gadjah Mada University, Jl. Grafika 2, Yogyakarta, Indonesia, 55281.
[1] Department of Mechanical Engineering, Nusa Cendana University, Jl. Adi Sucipto, Penfui, Kupang, East Nusa Tenggara, Indonesia, 85100.
*erich.umbu[at]mail.ugm.ac.id


Abstract

Shot peening is a mechanical surface treatment that can produce compressive residual stresses caused by plastic deformation on the surface of material. This plastic deformation can improve the surface characteristics of metallic materials, such as modification on surface morphology, surface roughness and surface hardness. Biomaterial of 316L is an austenitic stainless steel that widely used in the medical application as an implant material. The shot peening treatment can improve the surface characteristics of 316L biomaterial. The aim of this study is to investigate the effect of shot peening on surface modification, surface roughness, and surface hardness of 316L biomaterial at different shot distance and shot angle. The shot peening parameters that used in this research are shot distance (6, 8, 10, and 12 centimeters), shot angle (30, 60, and 90 degrees), working pressure (7 bars), shot duration (20 minutes), and using steel balls S-170 (diameter of 0.6 millimeters). The result showed that the shot distance and shot angle of shot peening can improve the surface morphology, surface roughness, and surface hardness of 316L biomaterial at shot distance of 6 centimeters and shot angle of 90 degrees. This phenomenon showed that the shot peening can improve the surface modification, surface roughness, and surface hardness of 316L biomaterial.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=40


54.

MIX DESIGN OF SELF COMPACTING CONCRETE BASED ON ULTRA HIGH COMPRESSIVE STRENGTH FLOW MORTAR MIX
Soca Anggoro Wulan, Iman Satyarno, Ashar Saputra

Department of Civil and Environment Engineering, Gadjah Mada University of Yogyakarta


Abstract

Mix design of Self Compacting Concrete or SCC is not straight forward because many parameters control its rheological properties. The case becomes more complicated if high compressive strength is also to be achieved. Therefore simpler approach is used, that is by firstly determining the flow mortar mix which is easier to be designed even with the requirement of ultra high compressive strength. The mix design of SCC is then determined by simply adding the coarse aggregate with a certain amount of that mortar mix. In this research the ultra high compressive strength flow mortar was made of Type I cement, 15% of cement weight silica fume, weight ratio of cement and curve No. IV sand was 1: 0.35. The water-cementitious ratio was 0.22 and the amount of plasticizer was 1.3%, 1.4%, 1.5% and 1.6% of the cement weight. For the SCC, the used absolute volume of mortar mix was taken to be 1.4, 1.6, and 1.8 of the volume of that aggregate void where the aggregate size was 4.8 mm - 9.6 mm. Test results show that the mortar flowability was 170 mm, 180 mm, 220 mm and 250 mm, where the achieved compressive strength was 83.1 MPa, 96.8 MPa, 111.4 MPa, and 135.5 MPa respectively. Mortar mix with 1.6% super plasticiser was then used for making the SCC and the results show that the concrete flow were 460 mm, 580 mm and 660 mm and the compressive strength was 88.2 MPa, 100.0 MPa, and 97.9 MPa. It can be concluded that using this simpler approach the SCC can have 580 mm flow and 100 MPa compressive strength.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=45


55.

Modification and Automation of Laser Beam Deflection Measurement System in Determination of Diffusion Coefficient and Estimation of Liquid Vegetable Oil Molecules Size
Mohamad Aman, Djati Handoko, Arief Sudarmaji, Samsul Hafiz, Levin Soedarmawan, Syukur Pambudi, and Affan Hifzhi

Department of Physics, Faculty of Mathematics and Natural Sciences, University of Indonesia


Abstract

Measurement of diffusion coefficient by the Wiener method i.e. deflection of the laser beam caused by the refraction of light on the inter-diffusion area of two fluids with refractive index graded, have shown relatively good agreement with literatures in previous studies, especially for liquids of small molecule-sized order of Angstrom and having mass of less than hundreds amu (atomic mass unit). In the present study, the same method used to examine the diffusivity of some abundant available liquid vegetable oil with a size relatively larger molecule in a suitable solvent. Those are palm oil, coconut oil, corn oil, and sunflower oil. Vegetable oil has a structure and composition that is quite complicated and become the raw material of biodiesel as alternative fuels as well as for cooking so challenging to be tested. To improve the sensitivity and simplify the measurement, a modification to the pouring technique and automation of sample retrieval and processing of the image curve pattern of the laser beam refraction results using the camera has been done by image digitizing, as well as the calculation of the diffusion coefficients and the estimated radius of the molecule. From the result, it has been found the good suitability of diffusivity calculations with literature values, so that the measurement system is also accurate enough to observe the diffusion of liquids with relatively large molecules.

Topic: Materials Science and Engineering

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=64


56.

Refractive index gradients behaviour and diffusion coefficient of NaCl aqueous solution by using optical method
Syukur Pambudi, Affan Hifzhi, Levin Soedarmawan, Arief Sudarmaji, Djati Handoko

Departemen Fisika, Universitas Indonesia, Depok 1424, Indonesia


Abstract

The mass transfer of NaCl aqueous solution in liquid has been systematically investigated by varying the number of NaCl amount and time of observation. The measurement system utilizes deflection of a laser beam while entering interface of liquid-liquid with different refractive index. Interestingly, the deflection beam has been found to be more deflected with an increase of the number of NaCl amount, suggesting that the refractive index gradients are modified. However, the dynamic refractive index gradients are analyzed by observing the deflection beam with respect to time. The deflection beam pattern transforms from deeply curved to flat with a different rate, indicating that mass transfer velocity depends on the number of NaCl amount. The diffusion coefficient of NaCl is found in a good agreement with coefficient values specified in the literature.

Topic: Materials Science and Engineering (M-02)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=48


57.

Diffusion Coefficient Measurement System Based on Refractive Index Gradient: Time Observation Varied
Affan Hifzhi*, Levin Soedarmawan, Syukur Pambudi, Arief Sudarmaji, Djati Handoko**

Department of Physics, Faculty of Mathematic and Sciences, Universitas Indonesia, Depok 16424


Abstract

Liquid-liquid diffusion with different refractive index measurement system has been carefully constructed by using laser beam deflection method. Refraction has known depend on the molecule characteristics of a material. The deflection which the pattern formed as a gradient come from refraction of the beam when entering the interface of two different refractive index liquid. The diffusion coefficient is determined by observing refractive index gradients of liquid-liquid on the interface. In this phenomenon, mass transfer from denser liquid to another liquid play an important role and described by using the Fick’s Law. The diffusion experiments have been performed with NaCl-Distilled Water solution. Interestingly, we found the diffusion coefficient of NaCl reasonably good agreement with coefficient values specified in the literature. The time dependent observation also discussed to obtain comprehensive behavior of mass transfer phenomenon. By using the diffusion coefficient, we discuss further about molecule radius. With simple setup and data analysis, we believe that the measurement system can be used to observed mass transfer and molecule characteristics in liquid accurately.

Topic: Materials Science and Engineering (M-02)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=70


58.

Effect of Fiber Sequences on the Mechanical Properties of Woven Fan Palm/Glass Fiber Reinforced Polymer Hybrid Composites
Hendri Hestiawan12, Jamasri2, Kusmono2

1 Department of Mechanical Engineering, Faculty of Engineering University of Bengkulu, Jln. WR. Supratman Kandang Limun, Bengkulu 38122, Indonesia
2 Department of Mechanical and Industrial Engineering, Faculty of Engineering
University of Gadjah Mada, Jln. Grafika No. 2, Yogyakarta 55281, Indonesia


Abstract

The aim of this research is to investigate the fiber sequences influence on mechanical properties of woven fan palm/glass fiber reinforced polymer hybrid composites. The research materials are woven fan palm, woven glass fiber, unsaturated polyester resin Yukalac 157 BQTN-EX, and catalyst methyl ethyl ketone peroxide (MEKP). The specimen based on ASTM D638 standard for tensile test, ASTM D790M standard for flexure test and ASTM D5942 for impact test. Research specimens varied in fiber sequence between woven fan palm and woven glass fiber. Manufacture of specimens used vacuum bagging method at pressure of -60 mmHg. The result of tensile, bending, and impact tests show that the addition of woven glass fiber can increase the mechanical strength of the hybrid composite. The best mechanical properties are obtained by adding four woven glass fibers with lamina arrangement with the surface of the woven glass fiber.

Topic: Materials Science and Engineering (M-02)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=76


59.

Design Semi-Automatic Control System using PLC for Stalling Materials in Forming Machine in Manufacturing Industry
syahril.ardi@polman.astra.ac.id; ikhtiardwi@gmail.com

Polytechnic Manufacture Astra


Abstract

This research was conducted in Manufacturing Industry in Indonesia. The company, especially at the Plant, does the TPM (Total Productive Maintenance) activity carried out by a small group of various divisions, especially maintenance. Maintenance implements these results into LOR (Line Operation Ratio). LOR standards is set by the company is 85%. So it can be made the target of a higher LOR future. For it must lower the existing downtime. Downtime highest Fin Forming machines are Dandori Models that are equal to 2,608 minutes or about 9:30% of LOR. Standard downtime allowed 5% of LOR. In the process, dandori models required a process of stretching aluminum material manually along with the crank process forming roller. In this process the operator must perform movement to the uncoiler machine to stretch the material and the operator moves to the forming to crank on forming roller, here, there is no time which required operators to perform movements from the uncoiler to forming. We design a special controller to turn on the motor servo feed rollers on the forming machine. The material can move automatically when operators do crank forming roller, and the operator does not need to move to the position of the engine to stall uncoiler material reels manually.

Topic: Mechatronics

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=9


60.

The Development of Walking Pattern and Stabilization of Humanoid Soccer Robot DARDROID (DARWIN-ODROID)
Yohanes Fridolin Hestrio, Dr. Prawito Prajitno

Universitas Indonesia


Abstract

The main problems in humanoid robots are vision and motion. For the vision, the problem is how to detect and identify an object. For the motion, the problem is walking stability. The goal of this research is to optimize previous research and standardize the velocity and stability of humanoid robot, the main problem presented in this research is motion. Commonly, research on humanoid robots use static walking and dynamic walking methods for its stability. The usage of static walking methods on robots emphasize on the stability of every pose, while dynamic walking emphasizes on its efficiency in mobility while walking. The combination of both walking methods can achieve a stable and efficient humanoid robot movement, in which applies the rule of Zero Moment Point and Invers Kinematic. Other than that, there are other supporting factors in stability, such as the mechanical design and electrical system which helps the movement of humanoid robots. In this research, we will use inertial measurement unit for supports Zero Moment Point and Invers Kinematic methods with the application of Kalman filter and PD controller on data from inertial measurement unit. PD controller use feedback data from IMU for adjusting the position of servos that was calculated by Zero Moment Point and Invers Kinematic methods when the robot is in a walking state. This research will be done by comparing results from simulation and direct examination of a humanoid robot to get its stability margin and velocity. The result of humanoid robot stability margin is 5.367 mm in X-axis and 10.567 mm in Y-axis, and its minimum velocity 0.0524 m/s and maximum velocity 0.0633 m/s on grass with altitude 3 cm and minimum velocity 0.0933 m/s and maximum velocity 0.1048 m/s on grass with altitude 1.5 cm

Topic: Mechatronics

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=44


61.

Automation Testing System for Energy Efficiency of Electric Fan Based on SNI IEC 60789:2013
Qudsiyyatul Lailiyah, Prayoga Bakti, Nanang Kusnandar, Iput Kasiyanto, Hari Tjahjono, Immamul Muchlis

Research Center for Quality System and Testing Technology
Indonesian Institute of Science


Abstract

Automation system testing is needed by testing laboratory to reduce testing time. In this study the automation is focused on energy efficiency testing system for the electric fan refers to SNI IEC 60789:2013. The mechanical system component consists of a rail that can drive an anemometer buffer according to the desired distance. The process of moving an anemometer is electronically controlled by relays and timer. An anemometer sensor produces digital data to be read and recorded by the computer. The data of wind speed and electric power from the fan are calculated manually to obtain the percentage value of energy efficiency. This system can significantly reduce test time.

Topic: Mechatronics

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=63


62.

ROS Compatible Low Cost Rotating Lidar Design
Nuryono S. Widodo#1, Son Ali Akbar*2, Arif Rahman#3

Electrical Engineering Department
Information System Department
Universitas Ahmad Dahlan
Yogyakarta


Abstract

Robot Operating system is collection of software frameworks for robot software development . Researchers that work with ROS will have an opportunity to use or to be exact to reuse any software framework from another researcher as long as they use a similar robot platform, or similar device that has been include in the ROS. This paper present a design for a low cost rotating Lidar that compatible with ROS. As all we know distance measurement is the basic for building an autonomous capibility for robots. Rotating lidar is among one the most popular device used to acquire this kind of information. However most of them are not suitable for low budget project because of their high cost. The design presented here tries to build a low cost rotating lidar based on Lidar device with the compatibility with the ROS. The design incorporate a control board based on a microcontroller.

Topic: Mechatronics (E-04)

PermaLink: http://ismee.conference.upi.edu/kfz/pages/abstract.php?id=69


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