Garuda - Garba Rujukan Digital

Perbandingan Neural Network (NN) Observer dan Neural Network-Genetic Algorithm (NN-GA) Observer untuk Estimasi Kecepatan Motor Induksi Bambang Purwahyudi; Soebagio Soebagio; Mauridhi Hery Purnomo
Seminar Nasional Aplikasi Teknologi Informasi (SNATI) 2005
Publisher : Jurusan Teknik Informatika, Fakultas Teknologi Industri, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Dalam makalah ini membahas perbandingan kontrol kecepatan tanpa sensor kecepatan motor induksiyang dioperasikan dengan metoda field oriented control (FOC). Kecepatan motor induksi diestimasi oleh suatuobserver. Estimasi kecepatan motor oleh observer hanya memerlukan masukan tegangan dan arus stator.Metode observer yang dibandingkan adalah antara Neural Network (NN) dan Neural Network-GeneticAlgorithm (NN-GA). Algoritma pembelajaran NN yang digunakan kedua metode ini menggunakanbackpropagasi, sedangkan GA pada metoda kedua digunakan untuk mengoptimasi parameter-parameter NNsehingga diperoleh struktur NN yang sederhana. Kedua Observer dirancang untuk menentukan pola kecepatansudut rotor, sehingga dapat dimanfaatkan untuk pengendalian kecepatan motor induksi. Hasil simulasimenunjukkan bahwa NN-GA observer mempunyai Standart Error Estimasi lebih baik dibandinggkan denganNN Observer dan kedua observer dapat mengestimasi kecepatan rotor motor induksi.Kata kunci: Neural Network-Genetic Algorithm, Observer, Field Oriented Control.

A comparative study of nonlinear circle criterion based observer and H∞ observer for induction motor drive Farid Berrezzek; Wafa Bourbia; Bachir Bensaker
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 10, No 3: September 2019
Publisher : Institute of Advanced Engineering and Science

This paper deals with a comparative study of circle criterion based nonlinear observer and H∞ observer for induction motor (IM) drive. The advantage of the circle criterion approach for nonlinear observer design is that it directly handles the nonlinearities of the system with less restriction conditions in contrast of the other methods which attempt to eliminate them. However the H∞ observer guaranteed the stability taking into account disturbance and noise attenuation. Linear matrix inequality (LMI) optimization approach is used to compute the gains matrices for the two observers. The simulation results show the superiority of H∞ observer in the sense that it can achieve convergence to the true state, despite the nonlinearity of model and the presence of disturbance.

THE EFFECT OF ONE HOUSE ONE LARVAE OBSERVER MOVEMENT ON THE EXISTENCE OF MOSQUITO LARVAE IN WATUBANGGA SUBDISTRICT: HOUSE AND LARVAE OBSERVER Yanti Susanti; Timbul Supodo; Sunarsih Sunarsih
INDONESIAN JOURNAL OF HEALTH SCIENCES RESEARCH AND DEVELOPMENT (IJHSRD) Vol. 3 No. 2 (2021): INDONESIAN JOURNAL OF HEALTH SCIENCES RESEARCH AND DEVELOPMENT
Publisher : STIKes Mandala Waluya Kendari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36566/ijhsrd/Vol3.Iss3/97

Background: Dengue Hemorrhagic Fever is a mosquito-borne infectious disease found in tropical and subtropical areas around the world. In recent years, transmission has increased especially in urban and semi-urban areas and has become a major international public health concern. The aim of this study was to analyze the effect of the movement of one house and one larva monitor on the presence of larvae in Watubangga sub-district, Watubangga sub-district. Methods: This type of research is quantitative research with a pre-experimental approach. The population in this study were all heads of families living in the Watubangga Village area as many as 608 families. The sample in the study was partly from the heads of families who lived in Watubangga Village as many as 236 respondents. The sample was selected using a systematic random sampling method. Data were collected through questionnaires and observation sheets and then analyzed descriptively and inferentially. Result: This study shows that there is an effect of the movement of one house and one larva monitoring interpreter on the presence of larvae in Watubangga Village where a p-value of 0.000 is obtained. Conclusion: After the intervention with the one house movement, one larva monitoring interpreter, there was an increase in community skills in efforts to prevent dengue hemorrhagic fever. Therefore, it is hoped that the one house one larva monitoring program can be implemented throughout the territory of the Republic of Indonesia.

DESCRIPTIVE STUDY ON THE PERSONAL COMPUTER STATUS AS AN OBSERVER AND RECORDER-PARAMETER PROCESS PARAMETERS IN ELECTRICITY GENERATION Sri Mulyaningsih; Djoko Hermanto., DR, MS.
Jurnal Sistem Informasi 1990
Publisher : STMIK JAKARTA STI&K

Show Abstract | Download Original | Original Source | Check in Google Scholar

Advances in technology these days walking fast, along with the progress of information systemsthat cause this century referred to as the information age. In the industrial world, because bothare closely related.The power plant is one important component dalampenggunaan industry.In operation steam-Muara Karang, Jakarta has been to use the computer however there are stilldeficiencies in the way of determining the original cause of the abnormalities of a system in caseof trouble (error).For that they held a descriptive study of the personal computer as an observer and recorder statusparameters in the process of generating electricity by adding a bit of hardware on the existingsystem.The first goal of the desired results will be obtained that is able to determine the initial status of asystem abnormalities.

PERANAN OBSERVER DALAM LESSON STUDY (SUATU TELAAH TEORETIS DAN PRAKTIS) Jacob, C
Jurnal Pengajaran Matematika dan Ilmu Pengetahuan Alam Vol 8, No 1 (2006): Jurnal Pengajaran MIPA
Publisher : Faculty of Mathematics and Science Education, Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18269/jpmipa.v8i1.343

Artikel ini menyajikan peranan observer yang konsern terhadap data rekaman secara akurat dan menelaah dengan maksud tertentu dan secara sistematis pada mengajar guru. Sekali informasi direkam, pengawas harus interpretasi rekamanÂ itu untuk membuat keputusan tentang informasi mana yang dapat diterima oleh guru untuk menentukan kekuatan dan kelemahan untuk ditingkatkan dan ditanggulangi. Selain itu, peranan observer meliputi: menentukan kerangka, pemfokusan pada guru, pemfokusan pada siswa, mengobservasi interaksi, dan mengonsolidasi suatu analisis pendahuluan.Kata Kunci:Â Tujuan, prinsip, dan keterampilan observer

SIMULASI OPTIMASI PENGUKURAN STATE OF CHARGE BATERAI DENGAN INTEGRAL OBSERVER Asep Nugroho; Estiko Rijanto
Widyariset Vol 17, No 3 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

The accuracy of state of charge (SoC) measurement has been an important key in the design of Battery Management System (BMS). A SoC measurement can prevent the battery from both overcharged and undercharged condition. One of the conventional methods for SoC estimation is coloumb counting (CC). This method has a drawback regarding to the accumulation of error propagation. To improve the accuracy of CC method, the integral observer could be added. In our work charge-discharge data simulation generated by PSIM was used to test the Integral observer performance. This research used general lithium-ion battery. It was found that this approach could significantly correct the error from the numerical integral calculation and discrete data input. The error of CC method at 4000 sec was found to reach 25%; however the error propagation could be decreased up to less than <3% by Integral observer.

Pengembangan Observer untuk Pendeteksian Kecepatan Brushed DC Generator NC475 Widjonarko Widjonarko; Andi Setiawan
Jurnal Arus Elektro Indonesia Vol 2 No 2 (2016)
Publisher : Fakultas Teknik, Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Dalam makalah ini dibahas pengembangan observer kecepatan untuk generator arus searah (dc) bersikat NC475 yang dapat memperbaiki kemampuan deteksi kecepatan dari sistem deteksi kecepatan menggunakan sensor dengan berbasis sebuah rotary encoder. Dua sistem deteksi dan pencatatan kecepatan ini dibangun dengan menggunakan kontroler Arduino UNO dan kemampuan recording dari kedua sistem ini juga dibandingkan. Pengujian yang dilakukan untuk melihat error pembacaan observer yang menunjukkan bahwa observer ini cukup memadai dengan persen error 1.9% terhadap hasil pembacaan sensor kecepatan yang dalam hal ini dijadikan sebagai standar. Hasilnya menunjukkan bahwa observer yang dibuat dalam penelitian ini mampu melakukan deteksi kecepatan dan pencatatan 100 records per detik sementara untuk sistem dengan menggunakan rotary encoder hanya mampu melakukan pencatatan data 20 records per detik. Dengan hasil ini maka sistem observer ini lebih memadai untuk mendukung proses pengaturan kecepatan generator yang mem

PERANCANGAN APLIKASI REKAM DATA CUACA HASIL PENGAMATAN OBSERVER STASIUN METEOROLOGI BMKG BERBASIS WEBSITE (Studi Kasus : Stasiun Meteorologi Supadio Pontianak) Agung Sasongko
Jurnal Khatulistiwa Informatika Vol 2, No 2 (2014): Periode Desember 2014
Publisher : Universitas Bina Sarana Informatika

AbstractBadan Meteorologi Klimatologi dan Geofisika (BMKG) is one of the Indonesian government-owned entity that specifically address the issue of climate and weather in Indonesia. Information of weather data are needed both by government and the public, it relates to the planning of work activities that depend on weather conditions, such as agriculture, shipping, fishing, flight, and so forth. Observer is the officer who specifically collect information each time weather conditions. The data from the observer is then further processed to become the weather information and forecast weather. Often the work of the observer becomes longer because besides entry the data, the observer must also do codefication and recreate reports from the data ME-48. This writing discusses the development of applications to assist observers in processing weather data record using SDLC development methods as well as qualitative descriptive research method. Results of application development shows that the application can process the data ME-48 into a form reports like ME-45, WXREV, Rain Card, Climatology and average monthly weather elements that usually must be done manually by the observer, is now using the application does not require long time to generate all the reports.Keywords: Observer, Website, Weather Application.

New Model Reference Adaptive System Speed Observer for Field-Oriented Control Induction Motor Drives Using Neural Networks Hossein Rahimi Khoei; Mahdi Zolfaghari
Bulletin of Electrical Engineering and Informatics Vol 5, No 1: March 2016
Publisher : Institute of Advanced Engineering and Science

One of the primary advantages of field-oriented controlled induction motor for high performance application is the capability for easy field weakening and the full utilization of voltage and current rating of the inverter to obtain a wide dynamic speed rangeThis paper describes a Model Reference Adaptive System (MRAS) based scheme using Artificial Neural Network (ANN) for online speed estimation of sensorless vector controlled induction motor drive. The proposed MRAS speed observer uses the current model as an adaptive model. The neural network has been then designed and trained online by employing a back propagation network (BPN) algorithm. The estimator was designed and simulated in Matlab/Simulink. Simulation result shows a good performance of speed estimator. The simulation results show good performance in various operating conditions. Also Performance analysis of speed estimator with the change in resistances of stator is presented. Simulation results show this estimator robust to parameter variations especially resistances of stator.

Full Order Observer Based Control of Single-Phase Inverter Both in Standalone and Gridtie Modes Nagulapati Kiran
Bulletin of Electrical Engineering and Informatics Vol 5, No 4: December 2016
Publisher : Institute of Advanced Engineering and Science

In 3-phase systems, the reliability of 3-phase Inverter is not good. In such situations Paralleled Inverter Systems are used. Parallel Inverter operation has a major topic in uninterruptible power system (UPS) applications where the design is focused on the standalone operation, and output stage is typically an inductor-capacitor filter. Most of the standalone inverter systems use a LC filter and proportional-integral (PI) controller in their control loops. When connecting the paralleled inverters to utility grids, the capacitor becomes redundant and thus either a pure inductor or an LCL filter can be used as inverter output stage. Compared with the L filter, the LCL filter is more attractive because it cannot only provide higher harmonics attenuation with same inductance value, but also allow inverter to operate both in standalone and grid-tie modes, which makes it a universal inverter for distributed generation applications. Output of Inverter should always be checked. In this paper, a full order observer for Inverter System is designed and is used for estimation of State Variables of the Inverter System. Two modes are adopted: a) Grid-tie Mode b) Standalone Mode. MATLAB/Simulink is used to verify and validate the proposed idea.

Filter By Year

Found 162 documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Filter By Year

Found 162 documents Search map observer , by title

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Found 162 documents
Search