• Title/Summary/Keyword: On-board controller

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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.

TFT-LCD Controller Implementation Using DMA of High Performance in Multi-Bus Architecture (다중버스 아키텍처 구조에서 고성능 DMA를 이용한 TFT-LCD Controller 구현)

  • Lee, Kook-Pyo;Lee, Keun-Hwan;Yoon, Yung-Sup
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.45 no.8
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    • pp.54-60
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    • 2008
  • The bus architecture consists of a master initiating a communication transaction, a slave responding to the transaction, a arbiter selecting a master, a bridge connecting buses and so on. Recently this is more complicated and developed toward multi-bus architecture. In this paper, several cases of multi-shared bus architecture are discussed and in order to decrease the bridge latency, the architecture introducing a memory selector is proposed. Finally, a LCD controller using DMA master is integrated in this bus architecture that is verified due to RTL simulation and FPGA board test. DMA, LCD line buffer and SDRAM controller are normally operated in the timing simulation using ModelSim tool, and the LCD image is confirmed in the real FPGA board containing LCD panel.

The design and FPGA implementation of a general-purpose LDI controller for the portable small-medium sized TFT-LCD (중소형 TFT-LCD용 범용 LDI 제어기의 설계 및 FPGA 구현)

  • Lee, Si-Hyun
    • Journal of the Korea Society of Computer and Information
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    • v.12 no.4
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    • pp.249-256
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    • 2007
  • AIn this paper, a new desist of LDI controller IC for general purpose is proposed for driving the LDI(LCD Driver Interface) controller in $4{\sim}9$ inches sized portable small-medium TFT-LCD(Thin Film Transistor addressed -Liquid Crystal Display) panel module. The designed LDI controller was verified on the FPGA(Reld Programmable Gate Array) test board, and was made the interactive operation with the commercial TFT-LCD panel successfully. The purpose of design is that it is standardized the LDI controller's operation by one LDI controller for driving all TFT-LCD panel without classifying the panel vendor, and size. The main advantage for new general-purpose LDI controller is the usage for the desist of all panel's SoG(System on a Glass) module because of the design for the standard operation. And in the previous method, it used each LDI controller for every LCD vendor, and panel size, but because a new one can drive all portable small-medium sized panel, it results in reduction of LDI controller supply price, and manufacturing cost of AV(Audio Video) board and panel. In the near future, the development of SoG IC(Integrated Circuit) for manufacturing more excellent functional TFT-LCD panel module is necessary. As a result of this research, the TFT-LCD panel can make more small size, and light weight, and it results in an upturn of domestic company's share in the world market. With the suggested theory in this paper, it expects to be made use of a basic data for developing and manufacturing for the SoG chip of TFT-LCD panel module.

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Design of hovering flight controller for a model helicopter using a microcontroller (마이크로콘트롤러를 이용한 모형헬리콥터 정지비행 제어기 설계)

  • 박현식;이준호;이은호;이교일
    • 제어로봇시스템학회:학술대회논문집
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    • pp.185-188
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    • 1993
  • The goal of this paper is to develop an on-board controller for a model helicopter's hovering attitude control, using i8096 one-chip microcontroller. Required controller algorithm is programmed in ASM-96 assembly language and downloaded into an i8096 microcontroller. The performance of hovering flight using this system is verified by experiments with the model helicopter mounted on an instrumented flight stand where 3 potentiometers and an optical proximity sensor measure te attitude and main rotor speed of the helicopter.

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Development of an Educational System and Real Time Nonlinear Control (II) (교육용 시스템 개발과 실시간 비선형 제어(II))

  • 박성욱
    • The Transactions of the Korean Institute of Electrical Engineers D
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    • v.51 no.12
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    • pp.571-576
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    • 2002
  • This paper is to develop jumping ring system with three sensor arrays and to control levitated ring using dynamic neural mode. Placing an aluminum ring on the core and switching on an AC source causes the ring to jump in the air due to induced currents. The educational system is composed of 40th optical sensor array, encode circuit, 89C51 microprocessor and control board. The control board consists of power IC, and phase controller. Real time process is present to obtain a height of levitated ring for three different sensor arrays. Based on the educational system and the proposed dynamic neural mode, the height of levitation of the ring is controlled by reference signals. This paper focuses on real system controls using the dynamic neural mode with on line learning algorithm.

A study on implementation of integrated control system for LED communication based on micro controller (마이크로 콘트롤러에 기반한 LED 조명 통신 종합 제어 시스템 구현에 관한 연구)

  • Lee, JungHoon;Kim, Chan;Cha, Jaesang
    • Journal of Satellite, Information and Communications
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    • v.7 no.2
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    • pp.54-58
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    • 2012
  • In this paper, we implemented total monitoring system in which LED light turned on only when user detected and LED light turned out only when user disappeared. This system is composed of two modules, one is HW board based on Micro Controller and the other is SW control system based on Web server. Micro controller board is based on ATMega2560 chip which is connected with Infra Red and Ultra sonic sensors. Web based monitoring system was designed can be used in smart device. The validity of this monitoring system was proved by integration test of two modules.

The Design and Implementation of Open Architecture CNC Software Module by a Real-time Control (실시간 제어에 의한 개방형 CNC 소프트웨어 모듈의 설계 및 구현)

  • 이제필
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.8 no.5
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    • pp.54-62
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    • 1999
  • This paper describes the design and implementation of a PC(personal computer) based open architecture machine tool controller. The hardware of open architecture CNC has generally a motion control board on a PC for controlling a servo motor. But this paper describes open architecture hardware that consists of a PC, a counter board a DAC board and a DIO board only. This makes it easy to generate CNC software module in a hardware-independent way. The proposed open architecture CNC software runs on the MS-Windows NT. The paper describes a method of con-trolling servo motors using a real-time timer of MS-Windows NT and a commercial real-time operating system on the MS-Windows. NT. An open and reconfigurable software module is made up of an object and an API(application programming interface). Using the object and the API a new CNC system can be quickly configured to control dif-ferent machine tools. The proposed open architecture CNC system is applied to 4-axis lettering center.

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Fuzzy Logic PID controller based on FPGA

  • Tipsuwanporn, V.;Runghimmawan, T.;Krongratana, V.;Suesut, T.;Jitnaknan, P.
    • 제어로봇시스템학회:학술대회논문집
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    • pp.1066-1070
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    • 2003
  • Recently technologies have created new principle and theory but the PID control system remains its popularity as the PID controller contains simple structure, including maintenance and parameter adjustment being so simple. Thus, this paper proposes auto tune PID by fuzzy logic controller based on FPGA which to achieve real time and small size circuit board. The digital PID controller design to consist of analog to digital converter which use chip TDA8763AM/3 (10 bit high-speed low power ADC), digital to analog converter which use two chip DAC08 (8 bit digital to analog converters) and fuzzy logic tune digital PID processor embedded on chip FPGA XC2S50-5tq-144. The digital PID processor was designed by fundamental PID equation which architectures including multiplier, adder, subtracter and some other logic gate. The fuzzy logic tune digital PID was designed by look up table (LUT) method which data storage into ROM refer from trial and error process. The digital PID processor verified behavior by the application program ModelSimXE. The result of simulation when input is units step and vary controller gain ($K_p$, $K_i$ and $K_d$) are similarity with theory of PID and maximum execution time is 150 ns/action at frequency are 30 MHz. The fuzzy logic tune digital PID controller based on FPGA was verified by control model of level control system which can control level into model are correctly and rapidly. Finally, this design use small size circuit board and very faster than computer and microcontroller.

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DDR Memory I/F Implementation For Military Single Board Computer (군용 SBC에서의 고속메모리모듈의 I/F 적용연구)

  • Lee, Teuk-Su;Kim, Yeong-Gil
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.540-543
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    • 2010
  • POWER PC series are common to the Central Processing Unit for Military Single Board Computer. Among them, G4 group, which contains the 74xx series supported by Freescale manufacturer is mainly used in the Military applications. We focus on the Interface between memory and controller. PCB stacking method, component routing, impedance matching and harsh environment for Military spec are the main constraints for implementation. Also, we developed memory as a module for the consideration of Military environments. The overall type of SBC should be designed by the form of 6U VME or 3U VME.

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Study on the Real-Time Moving Object Tracking using Fuzzy Controller (퍼지 제어기를 이용한 실시간 이동 물체 추적에 관한 연구)

  • Kim Gwan-Hyung;Kang Sung-In;Lee Jae-Hyun
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.1
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    • pp.191-196
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    • 2006
  • This paper presents the moving object tracking method using vision system. In order to track object in real time, the image of moving object have to be located the origin of the image coordinate axes. Accordingly, Fuzzy Control System is investigated for tracking the moving object, which control the camera module with Pan/Tilt mechanism. Hereafter, so the this system is applied to mobile robot, we design and implement image processing board for vision system. Also fuzzy controller is implemented to the StrongArm board. Finally, the proposed fuzzy controller is useful for the real-time moving object tracking system by experiment.