• 제목/요약/키워드: digital PID controller

검색결과 151건 처리시간 0.023초

고정밀전원장치를 위한 디지털 제어기 개발 (Development of the Digital Controller for High Precision Digital Power Supply)

  • 하기만;이성근;김윤식
    • 한국마린엔지니어링학회:학술대회논문집
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    • 한국마린엔지니어링학회 2006년도 전기학술대회논문집
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    • pp.249-250
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    • 2006
  • In this paper, hardware design and implementation of digital controller for the High Precision Digital Power Supply (HPDPS) based on Digital Signal Processor (DSP) and Field Programmable Gate Array (FPGA) is presented. Developed digital controller is composed of high resolution Digital Pulse Width Modulation (DPWM) and high resolution analog to digital converter circuit with anti-aliasing filter. And Digital Signal Processor (DSP) has the capability of a few micro-second calculation time for one feedback loop. 32-bit DSP and DPWM with 150[ps] step resolution is used to implement the HPDPS. Also 18-bit 2 mega sample per second ADC board is adopted for the developed digital controller. Also, hardware structure of the developed digital controller and experimental results of the first prototype board for HPDPS is described.

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$H_{\infty}$ 제어기법을 이용한 저속디젤기관의 속도제어 (Speed Control of the Low Speed Diesel Engine by $H_{\infty}$ Controller Design Method)

  • 양주호;정병건
    • Journal of Advanced Marine Engineering and Technology
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    • 제17권5호
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    • pp.63-70
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    • 1993
  • In 1980's to 1990's the marine propulsion diesel engines have been developed into lower speed and longer stroke for the energy saving(small S.F.O.C.). As these new trends the convetional mechnical-hydraulic governors were not adapted to the new requirements and the digital governors have been adopted in the marine use. The digital governors usually use the control algorithms such as the PID control, optimal control, adaptive control and etc. While the engine has delay time and parameter variations these control algorithms have difficulty in considering the stability and the robustness for the model uncertainty. In this study, the $H_{\infty}$ controller design method are applied to the speed control of the low speed marine diesel engine. By comparison the $H_{\infty}$ control results with the PID control results, the validity of the $H_{\infty}$ controller under the delay time and parameter variations is confirmed.

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데이터 병렬루프를 가지는 사이리스터 컨버터의 PID 점호각 제어 (Firing Angle Control of Thyristor Converter using PID Controller with Parallel Data Loop)

  • 이재성;장진석;추영배;이동희
    • 전력전자학회논문지
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    • 제14권4호
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    • pp.278-284
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    • 2009
  • 본 논문에서는 직류 전력을 공급하기 위한 사이리스터 컨버터의 출력 응답특성을 개선하기 위해 데이터 병렬 루프를 가지는 PID 제어 방식을 제안한다. 제안된 방식에서 사이리스터 컨버터의 점호각은 부하전류와 지령전압에 따라 결정된 점호각을 제어기와 병렬로 연결된 데이터 루프에서 발생하고, 이 점호각에 의해 발생하는 출력전압의 오차를 PID 제어기에서 보상하여 제어하는 방식이다. 제안된 방식의 실제적인 적용에서, 부하전류에 의해 병렬 데이터 루프의 점호각이 급격하게 변동하는 것을 억제하기 위해 간단한 디지털 저역통과 필터를 통하여 부하전류와 지령전압의 크기에 따라 룩-업 테이블 방식의 점호각이 결정되도록 설계하였다. 제안된 방식은 50[A]급의 사이리스터컨버터 실험을 통하여 검증하였다.

Analysis and Design of a Separate Sampling Adaptive PID Algorithm for Digital DC-DC Converters

  • Chang, Changyuan;Zhao, Xin;Xu, Chunxue;Li, Yuanye;Wu, Cheng'en
    • Journal of Power Electronics
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    • 제16권6호
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    • pp.2212-2220
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    • 2016
  • Based on the conventional PID algorithm and the adaptive PID (AD-PID) algorithm, a separate sampling adaptive PID (SSA-PID) algorithm is proposed to improve the transient response of digitally controlled DC-DC converters. The SSA-PID algorithm, which can be divided into an oversampled adaptive P (AD-P) control and an adaptive ID (AD-ID) control, adopts a higher sampling frequency for AD-P control and a conventional sampling frequency for AD-ID control. In addition, it can also adaptively adjust the PID parameters (i.e. $K_p$, $K_i$ and $K_d$) based on the system state. Simulation results show that the proposed algorithm has better line transient and load transient responses than the conventional PID and AD-PID algorithms. Compared with the conventional PID and AD-PID algorithms, the experimental results based on a FPGA indicate that the recovery time of the SSA-PID algorithm is reduced by 80% and 67% separately, and that overshoot is decreased by 33% and 12% for a 700mA load step. Moreover, the SSA-PID algorithm can achieve zero overshoot during startup.

하드 디스크 드라이브의 반복 추종 오차 제어 (Repetitive Control of Track Following Error in a Hard Disk Drive)

  • 전도영;정일용
    • 한국정밀공학회지
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    • 제13권5호
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    • pp.131-138
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    • 1996
  • This paper suggests a servo control algorithm to reduce the repeatable tracking error which is not explicitly taken into account in the design of a conventional PID controller of a computer hard disk drive. The robust stability of the repetitive control system with multiplicative modelling error is analyzed, and the controller was implemented using a fixed point DSP(Digital Signal Processor). Experimental results show that the repetitive errors are suppressed effectively by the proposed controller.

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FPGA를 이용한 DC Servo Motor의 속도제어 (Speed Control of DC Servo Motor using FPGA)

  • 박인수;서용원;박광현
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2009년도 정보 및 제어 심포지움 논문집
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    • pp.313-315
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    • 2009
  • In this thesis, A methodology of system implement for PID controller, PWM logic, HSC logic, Host Communication and external DAC interface are implemented into single FPGA chip is proposed. The implemented system is used to control the speed of DC servo motor. A DATA block transfers set point value(SV) and P, I, D gain parameters to the corresponding Blocks respectively by the Host Communication to Computer. A HSC block generates process value(PV) by a pulse and $90^{\circ}$ shifted pulse from the encoder A PID block makes error(E) signal from the set value and process value and output manufacture value(MV) through the PID controller. In PWM block using the MV from the PID block, drives H-bridge controlling the Motor. Also DAC interface controls the DAC to graph the digital signal such as SV, PV, E, MV in FPGA onto the Oscilloscope.

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디젤기관의 속도제어성능 개선에 관한 연구 (A Study on the Improvement of the Speed Control Performance in a Diesel Engine)

  • 김병덕;하주식
    • Journal of Advanced Marine Engineering and Technology
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    • 제17권5호
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    • pp.33-43
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    • 1993
  • Recent marine propulsion diesel engines tend to become slower in speed and longer in stroke for the higher engine efficiency, and in these long stroke and slow speed engines the digital governors are highly recommended to be used. But, in the present digital governors only the feedback of the engine rpm-signal is used for the engine speed control and it does not work so effectively when the load variation is large. In this paper, a new method is proposed to improve the speed control performance in a diesel engine, by adding the torque feedback loop to the present digital governor which uses the rpm feedback PID controller only. And also a method is proposed to adjust the parameters of the PID controller optimally.

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BLDC 모터를 이용한 고기동 추력기용 밸브 구동장치 제어기 개발 (Development of BLDC Motor Valve Actuator Controller for Rapid Maneuvering Thruster)

  • 이정운;장희진;박치형;박상준;장기원
    • 한국추진공학회:학술대회논문집
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    • 한국추진공학회 2011년도 제37회 추계학술대회논문집
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    • pp.929-932
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    • 2011
  • 추력기 시스템에 적용되는 밸브 구동장치용 제어기를 개발하였다. 추력기 시스템은 총 4개의 구동장치로 구성되어 있으며, 구동장치는 BLDC 모터를 적용하였다. 제어기는 구동장치 운용 조건과 제어 요건을 고려하여 설계 및 제작 되었다. 제어기 구성은 전원부, 제어부, 증폭부의 3부분으로 구성된다. 제어부의 Micro-controller는 TI사(社)의 TMS320F28335를 사용하여 Digital PID 제어 및 CAN 통신을 구현 하였다. 증폭부는 IGBT를 사용하여 3상 BLDC 모터의 구동을 수행 하였다.

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강인한 퍼지 디지털 PI+D 제어 시스템의 설계 및 구현 (Design and Implementation for rubust Fuzzy Digital PI+D Control system)

  • 권태익;김태언;박윤명;박재형;임영도
    • 융합신호처리학회 학술대회논문집
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    • 한국신호처리시스템학회 2001년도 하계 학술대회 논문집(KISPS SUMMER CONFERENCE 2001
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    • pp.137-140
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    • 2001
  • In this paper, Fuzzzy Digital PI+D Controller plans for load, noise, plant change, Fuzzy Controller makes use of simple four rule and membership function, and plant used three phase Induction Motor. Characteristic of system compared from experimentation respectively the proposed Control System, Digital PID Control and Digital PI+D Control System.

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가변 부하시 PID 제어방식에 의한 직류 서보 전동기의 직접 디지털 속도제어 (Direct digital speed control of d.c. servo motor by means of PID method in variable load)

  • 김성중;신동용;한후석;한우용;박종국;설남오
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1989년도 추계학술대회 논문집 학회본부
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    • pp.434-437
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    • 1989
  • This paper describes the speed control of d.c. servo motor by PID method in loads. PID algorithm has mainly been used in industrial circles In spite of the development of various control theory. D.C. motor speed is controlled by a microprocessor (Z-80). The speed control of d.c. motor is experimented in transient and steady state. In this study, feedforward controller Is used for dealing with loads. When it is possible to measure loads, this feed forward controller is used with another controller. And also, satisfying control effect Is gotten by using it In system with loads. Therefore, It is proved through experiment that a new designed controller can control the speed of d.c. servo motor.

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