• Title, Summary, Keyword: On-board controller

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A Study On The New Intermittent Message Acquisition Board Using FPGA For Next-Generation High-Speed Rail (차세대 고속철도 증속 운전에 대응하는 불연속 정보 수신보드 개발에 관한 연구)

  • Han, Jae-Mun;Um, Jung-Kyu;Yang, Chan-Seok;Cho, Yong-Gee
    • Proceedings of the KSR Conference
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    • pp.351-355
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    • 2009
  • There are two types of controller between railway and train. those are the Continuous Message Controller and the Intermittent Message Controller using for KHSR. The conventional Intermittent Message Controller board used a variable resister for setting the phase, but the variable resister affected some environmental facts, such as temperature, humidity, and vibration, etc. And It is requirement of reduction message processing time for speed-up operation in Next-Generation High-Speed Rail. This study suggests how to solve the problem described above. Using FPGA is quite profitable. It's easy to use and maintain, flexible with the New algorithm to fix up the problem.

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Implementation of Thrust Ripple Reduction for a Permanent Magnet Linear Synchronous Motor Using an Adaptive Feed Forward Controller

  • Baratam, Arundhati;Karlapudy, Alice Mary;Munagala, Suryakalavathi
    • Journal of Power Electronics
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    • v.14 no.4
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    • pp.687-694
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    • 2014
  • This paper focuses on the analysis and compensation of thrust ripples in permanent magnet linear synchronous motors (PMLSM). The main drawback in PMLSMs is the presence of thrust ripples, which are mainly due to the interaction between the permanent magnets and armature slotted core. These thrust ripples reduce the performance of the drive system in high precision applications especially at low speeds. This paper analyzes thrust ripples using the discrete wavelet transform. These undesired thrust ripples are compensated by using an adaptive feed forward controller. It is observed that this novel controller reduces about 65 percent of the thrust ripples. An extensive simulation is performed through MATLAB and it is validated through experimental results using a d-SPACE system with a DS1104 control board.

Monitoring of Industrial Controller using Web Server On Embedded Linux Platform

  • Park, Byung-Wook;Cho, Duk-Yun
    • 제어로봇시스템학회:학술대회논문집
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    • pp.45.4-45
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    • 2001
  • In this paper, we present the wet-based monitoring system for industrial controller such as inverter controller for hydraulic elevators. The monitoring system is using an embedded web server on embedded Linux platform. The control board of system-On-Chip (SoC) is based on ARM7TDMI with Ethernet controller. Wet-based monitoring system using embedded Linux platform can reduce the cost, and have flexibility both of technical issues and locations If the system to be monitored. The system shows the feasibility of remote monitoring system based on embedded Linux platform.

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Device Driver Development of LSM Using General Purpose PCI I/O Board

  • Kim, Hyun-Joong;Lee, Sang-Min;Ham, Woon-Chul
    • 제어로봇시스템학회:학술대회논문집
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    • pp.1684-1688
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    • 2003
  • In this paper, position and speed control algorithm of LSM (Linear Stepping Motor) using general-purpose PCI I/O board is discussed. The main purpose of this paper is to show that LSM controller can be established on the non real time operating system such as Microsoft Win2000 under the assumption that thread priority strategy is well designed. We can guarantee sampling interval less than 5msec based on the Pentium III microprocessor. Therefore this kind of LSM controller development environment makes shorten the prior research period needed to verify the validness of the proposed control strategy. We also introduce the tool of the real-time windows target system of matlab, which also makes shorten the prior research period. The main focus of this paper is on developing general purpose NT device driver which can drive the general purpose PCI board and applying it for implementing the hardware interface for 2- axis linear stepping motor control. From the experimental results show that the developed LSM controller guarantee 2 micrometer resolution in position control with 10cm/sec moving speed

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High Performance PI Current Controller for a Switched Reluctance Motor

  • Ashoornejad, A.;Rashidi, A.;Saghaeian-nejad, S.M.;Ahn, Jin-Woo
    • Journal of international Conference on Electrical Machines and Systems
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    • v.3 no.4
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    • pp.367-373
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    • 2014
  • The most common current controller for the Switched Reluctance Motor (SRM) is the hysteresis controller. This method, however, suffers from such drawbacks as variable switching frequency, consequent audible noise and high current ripple. These disadvantages make this controlling method undesirable for many applications. The alternative solution is the PI controller. Since the fixed gain PI current controller can only be optimized for one operating point, and on the other hand, SR motor is highly nonlinear, PI controller gain should be adjusted according to incremental inductance. This paper presents a novel method for PI current controller gain adaptation which is simple and yields a good performance. The proposed controller has been implemented on a test bench using a eZdsp F28335 board. The performance of the current controller has been investigated in both simulation and experimental tests using a four-phase 8/6 4KW SRM drive system.

System Implementation for Dew Condensation Prevention of Distributing Boards based on the Dew Point (이슬 결로점 기반 수배전반 결로 방지 장치 제작)

  • Kim, Tae-Myoung;Jee, Suk-Kun;Kim, Young-Wan
    • Journal of IKEEE
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    • v.22 no.3
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    • pp.645-650
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    • 2018
  • IT-based automatic controller that control the temperature and humidity to prevent dew condensation of distributing board was designed and implemented in this paper. The dew condensation temperature was deduced from room temperature and humidity of distributing board. Based on the comparisons between the deduced dew condensation temperature and the temperature of surface condensation, the facilities that can prevent the condensation was implemented to be operated in due order. Also, the remote monitoring module to monitor operation status of controller was implemented using LoRa technique. The performances for controller operation and data transmission were validated from the transmission and operation test for dew condensation prevention. The controller can be put to good use at the facilities that requires the condensation prevention.

Design and Implementation of a Control System for the Interleaved Boost PFC Converter in On-Board Battery Chargers (차량 탑재형 배터리 충전기의 인터리브드 부스트 PFC 컨버터 제어시스템 설계 및 구현)

  • Lee, Jun Hyok;Jung, Kwang-Soon;Lee, Kyung-Jung;Jung, Jae Yeop;Kim, Ho Kyung;Hong, Sung-Soo;Ahn, Hyun-Sik
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.65 no.5
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    • pp.843-850
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    • 2016
  • In this paper, we propose a digital controller design process for the interleaved type of a boost PFC (Power Factor Correction) converter which can disperse the heat of the switching devices due to the interleaved topology. We establish a mathematical model of a boost PFC converter and propose a controller design method based on the root locus. The performance of the designed controller is verified by simulations. The measurement of the input voltage, inductor currents, and the converter output link voltage are needed for the control of the converter system which consists of a power unit and a control unit where a high-performance 32-bit microcontroller is used. The adjustment of A/D conversion timing is also needed to avoid high frequency noise generated when the switches on/off. It is illustrated by the real experiments that the designed control system with the properly adjusted ADC timing satisfies the given performance specifications of the interleaved boost PFC converter in the on-board slow battery charger.

HARDWARE IMPLEMENTATION OF AN AUTONOMOUS FUZZY CONTROLLER

  • Sujeet Shenoi;Kaveh Ashenayi
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • pp.834-837
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    • 1993
  • This paper describes the implementation of an autonomous fuzzy logic controller. The controller is endowed with basic control principles and learning constructs which enable it to autonomously modify its control policy based on system performance. The controller lies dormant when system response is satisfactory but if rapidly initiates adaptation in real time when adverse performance is observed. The autonomous fuzzy controller is implemented on an Intel MCS-51 series micro-controller board using an inexpensive 8-bit Intel 8031 processor. The 11.06 MHz micro-controller operates at a rate exceeding 200 "global" look-up table reinforcements per second. This is important when developing practical on-line adaptive controllers for fast systems. It is also significant because an initial controller look-up table could be incorrect or non-existent. The relatively high learning rate enables the controller to learn to control a system even while it is controlling it.

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A study on high speed, high precision auto-alignment system (고속 고정도 자동정렬장치에 관한 연구)

  • 박대헌;이성훈;김가규;이연정;이승하
    • 제어로봇시스템학회:학술대회논문집
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    • pp.32-35
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    • 1997
  • A recent development in the Flat Panel Display(FPD) industry requires an auto-alignment system which is operated in high speed and high precision. In the FPD production process, aligning photo-mask with respect to guide mark printed in the glass should be accomplished in the accuracy of sub-micron order. So the system has high bandwidth and needs a dedicated control system which is fast and robust enough to control linear motors in precise manner. Proposed auto-alignment system structure in this presentation which consists of the master controller board, the DSP position controller board which controls 3 axis precision linear motors, the servo system and the man machine interface software. Designed and tuned under repeated experiments, the proposed system showed a reasonable performance in the aspect of rise time and steady state error.

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The development of the remote robot controller using the internet (인터넷을 이용한 원격 로봇 제어기의 개발)

  • 임재환;이종수;최경삼
    • 제어로봇시스템학회:학술대회논문집
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    • pp.776-778
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    • 1997
  • We propose a remote controller for a SCARA typed direct drive manipulator with two degrees-of-freedom(DOF). A remote controller system for SCARA robot of DDA is designed using a 2 DSP (TMS320c31) board and Winsock(Internet program class library supplied by Microsoft). The design objective of the system is to implement real time dynamic control algorithms which have been tested only by simulations so far and remote control regardless of the distance between user and robot. Because this system runs on Win95, we developed a VxD program to communicate with DSP controller.

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