FORISTEK : Forum Teknik Elektro dan Teknologi Informasi
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139 research outputs found
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SIMULASI DAN ANALISIS ERROR KOMPUTASI FFT WINOGRAD 16-TITIK MENGGUNAKAN XILINX ISE 10.1I
Full text linkWeakness data processing using analog processors are less efficient because if there is an error in the design of a systemusing an analog processor, the hardware of the system should be redesigned. Processing of analog signals using digital processor has several advantages such as efficient and easy to modify the system are made, without requiring hardware redesign as well as in the design of analog systems. Errors in the design of digital circuits in the processor only requires modification program, without having to change the hardware. Modifications can be done anywhere, without demanding we must be in the laboratory. Fast Fourier Transform (FFT) is a computational algorithm that is used for digital data processing such as in the field of image, music, and satellite. Winograd FFT 16 point multiplier, multiplier consists of 6 pieces in the form of fractions. Design of FFT multiplier in Xilinx ISE 10.1i could do with changing fractions menajdi integers and then converted into a number by logic 1 and 0. Changing fractions into an integer will give different computational results compared with the original computation using a multiplier of FFT. The shift results enormous computing will result in lost / loss information can be conveyed from the processed data. To that end, researchers tried to simulate and analyze the computational error rate of 16 point Winograd FFT processor using Xilinx ISE 10.1i. The results showed average percentage error computational simulations using FFT 16 point Xilinx Ise 10.1i compare with Matlab is 6.67% (first trial) and 4:48% (second trial). This error occurs because the processor does not allow the FPGA digital display numbers in a real number
PERENCANAAN ARSITEKTUR ENTERPRISE SISTEM INFORMASI PADA KANTOR OTORITAS PELABUHAN PENYEBERANGAN (KOPP) DITJEN PERHUBUNGAN DARAT
Full text linkNetwork Planning and infrastructure development at Kantor Otoritas Pelabuhan Penyeberangan (KOPP) has not reach mature level and causing overlap for Information Technology (IT) investment, unclear goals and it become less optimal. Therefore transportation ministry has to design a blue print of network infrastructure to achieve IT Governance and E – Governance strategy. Scope of this research is to design information system enterprise architecture at land tansportation directorat of KOPP to develop infrastructure for head office. Enterprise Architecture Planning (EAP) is a methode used for designing its infrastructure that has ability to define architecture process to use information for businees supporting and provide plan to implement the architecture. EAP blue print used to build and it helped KOPP to solve problem in architecture information system planning especially for application infrastructure component, data infrastructure and network infrastructure
DESIGN IMPROVEMENT OF A PNEUMATIC PISTON USING DESIGN FOR ASSEMBLY (DFA) METHOD, A CASE STUDY
Full text linkTeknik desain assembly (DFA) sudah lama dan sering digunakan pada industry untuk meningkatkan kualitas, mengurangi biaya, dan memperpendek waktu siklus proses manufaktur dari komponen dan produk. Paper ini bertujuan untukmeningkatkan efisiensi dari piston pneumatic dengan mendesain ulang masing-masing komponen produk dalamhubungannya dengan waktu handling, inserting dan assembling. Dengan kata lain, beberapa modifikasi termasuksejumlah komponen, pergantian material, dan waktu assembly. Efisiensi dari komponen produk yang dibuat meningkat secara signifikan dari 25,9% ke 67,45%. Efisiensi komponen tersebut meningkat dengan kenaikan hampir 50 % yang menghasilkan sisi ekonomi produk di pasaran
PENGENDALIAN KECEPATAN MOTOR SINKRON MAGNET PERMANEN (MSMP) TIPE INTERIOR DIATAS KECEPATAN DASAR
Full text linkThis paper presents a method to control Permanent Magnet Synchronous Motor (PMSM) at high speed above the based speed. To control PMSM from zero speed up to base speed, the armature voltage of the motor may be varied up to maximumvoltage allowed of the inverter used. In this region the stator voltage will increases with the increases of motor speed reaches the based speed, motor voltage cannot increase anymore because of saturation and consequently motor speed cannot be increase more highly. In order motor to control the motor above base speed, it is can be done by weakening the field flux of the rotor. As the rotor made of permanent magnet, then filed weakening control cannot be done directly. The control of field-weakening effect is done by controlling stator current vector of direct axix, which is variable with spee
PERANCANGAN MODEL INTERAKSI TANGAN VIRTUAL DALAM DUNIA AUGMENTED REALITY
Full text linkThis research promoted the topic concerning the interaction technique using virtual hand in Augmented Reality environment (AR). AR uses tracker library that use marker to know the human gesture. With the kind of interaction i.e. manipulation of the model, manipulation of the street, button pressing, and duplicate the model, virtual hand could become an alternative in augmented reality’s environment. This study produces that to do all the kind of interaction stated above, we only need two finger to interact with. At the end, this virtual hand aimed to able to do such a basic interaction in the world of augmented reality
SISTEM PENDUKUNG KEPUTUSAN PEMILIHAN SUPPLIER MENGGUNAKAN METODE ANALYTICAL HIERARCHY PROCESS (AHP)
Full text linkSupplier selection is multicriteria problem, since for selecting the supplier who will become partner, decision maker must consider many criteria to measure supplier performance. One of the models that is used to measure supplier performance is Supplier Performance Rating used in Kingston-Warren Corporation. The key aspects related to that model are Quality, Cost and Delivery. One of tools that used by decision maker to select supplier is making a computer system that can interact with decision maker. The system is called Decision Support System (DSS) for supplier selection. The process of supplier selection uses Analytical Hierarchy Process (AHP) model. AHP model conduct supplier selection by making paired matrix comparison from defined criterion. Result of AHP model calculation is in the form of priority value, so that the highest priority value produced by the model is used by decision maker to choose the best candidate supplier
EVALUASI PENGARUH CUACA TERHADAP KEANDALAN SISTEM DISTRIBUSI
Full text linkSystem distribution has used 13 of loads with source of generation from substation. It will be simulated on EDSA Technical 2005 in bad weather that occur in system during one month. Probability of bad weather occurance is 8,33%/year with failure rate almost twice than normal condition, about 2000%. The result shows that weather contributes significant influence for reliability of distribution system although the bad weather happened in short time
PEMANFAATAN USB KONVERTER KE RS-485DAN MIKROKONTROLER AVR ATTINY2313 PADA SISTEM POLLING
Full text linkAlmost people in Indonesia ever seen quiz who wants to be millionaire. That quiz is sometimes using a polling method to get the right answer. Audience at studio must help a quiz’s participant by using keypad to get a right answer. Audience must push the button of keypad where there is choice of answers. After that the answer will be display in a bar graph of percent. Thiscalled electronic polling system. With the aim of the research is to design and build a polling system with 6 slave-based serialRS-485, USB and microcontroller RISC and design and build a control system based serial RS-485, USB and microcontroller RISC efficient. The method used in this research is to study the reference, namely collecting materials that can be used as a reference, observation and study references required, inventory problems and needs in the design and manufacture, designand manufacture of hardware, software design and manufacturing, and perform testing. RS-485 is standard for communication with very long cable. This standard can use cable almost 1,2 Km long. RS-485 is very unique, this standard using master slave method. So only the master can control slave. Slave is using a microcontroller to manage data. AVR ATtiny2313 is a goodmicrocontroller for slave. This is microcontroller very small and very fast. Base from design, implementation and test result indication implement of RS-485 at polling system can be handle of case distance between master and slave. Beside that not only one slave can be connected to maste
ESTIMASI PEMBEBANAN TRANSFORMATOR GARDU INDUK 150 KV
Full text linkDevelopment of an area, such as Yogyakarta is directly proportional to consumption of power in that area. Transformer of 150 KV Wirobrajan substation, 60 MVA, is one of main equipment in power system. Load forecasting on this research using daily average peak load data during five years that is since 2003 to 2008. Based on the analysis of the result of exponential model approach method, the equation Y = 5.29 e 0.04057X is obtained. By using this model, it is found that average load growth forecasting of the transformer during 2009 to 2025, is suitable to supply 50.89 MVA of load demand (85% of full load). Moreover,model Y = 20.18 + 0.44X1 + 0.07X2 is found using polynomial method. In 2025, the transformer, based on polynomial method,can deliver power 80.07 MVA (about 80.07% of full load). Finally, load current was 230.72 A, in 2025