• Title/Summary/Keyword: Control tuning

Search Result 1,403, Processing Time 0.028 seconds

Auto-Tuning PI Control By Pattern Recognition (패턴 인식에 의한 Auto-Tuning PI 제어)

  • Park, Gwi-Tae;Lee, Gee-Sang;Kim, Sung-Ho;Park, Tae-Hong;Lee, Dong-Won
    • Proceedings of the KIEE Conference
    • /
    • 1990.07a
    • /
    • pp.510-513
    • /
    • 1990
  • This paper describes the procedures for pre-tuning and re-tuning of the PI controller to specifications on patterns of output response. The key ideas of the proposed adaptive scheme are as follows. The relay feedback is adopted first for pre-tuning and the adaptive algorithms by the pattern recognition are introduced for re-tuning procedure to retune the gains whenever control conditions are changed. The proposed scheme was applied to the experimental laboratory process, heat exchanger.

  • PDF

Implementation of a pole-placement self-tuning adaptive controller for SCARA robot using TMS320C5X chip (TMS320C5X칩을 사용한 스카라 로봇의 극점배치 자기동조 적응제어기의 실현)

  • Bae, Gil-Ho;Han, Sung-Hyun;Lee, Min-Chul;Son, Kwon;Lee, Jang-Myung;Lee, Man-Hyung;Kim, Sung-Kwon
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 1996.10b
    • /
    • pp.61-64
    • /
    • 1996
  • This paper presents a new approach to the design of self-tuning adaptive control system that is robust to the changing dynamic configuration as well as to the load variation factors using Digital signal processors for robot manipulators. TMS32OC50 is used in implementing real-time adaptive control algorithms to provide advanced performance for robot manipulator. In this paper, an adaptive control scheme is proposed in order to design the pole-placement self-tuning controller which can reject the offset due to any load disturbance without a detailed description of robot dynamics. Parameters of discrete-time difference model are estimated by the recursive least-square identification algorithm, and controller parameters are determined by the pole-placement method. Performance of self-tuning adaptive controller is illustrated by the simulation and experiment for a SCARA robot.

  • PDF

A self tuning controller using genetic algorithms (유전 알고리듬을 이용한 자기동조 제어기)

  • 조원철;김병문;이평기
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 1997.10a
    • /
    • pp.629-632
    • /
    • 1997
  • This paper presents the design method of controller which is combined Genetic Algorithms with the Generalized minimum variance self tuning controller. It is shown that the controllers adapts to changes in the system parameters with time delays and noises. The self tuning effect is achieved through the recursive least square algorithm at the parameter estimation stage and also through the Robbins-Monro algorithm at the stage of optimizing a polynomial parameters. The computer simulation results are presented to illustrate the procedure and to show the performance of the control system.

  • PDF

Implementation of Self-Tuning Fuzzy Control System for Robust Speed Control of an Induction Motor (유도 전동기의 견실한 속도 제어를 위한 자기 조정 퍼지 제어 시스템의 구현)

  • 송호신;이오결;이준탁;우정인
    • The Transactions of the Korean Institute of Electrical Engineers
    • /
    • v.43 no.2
    • /
    • pp.346-349
    • /
    • 1994
  • In this paper, we implemented the variable spped controller of an induction motor using the self-tuning fuzzy control algorithms, which recently is invoking the remarkable interest. Also we preposed a self-tuning technique of scale factors which could easily design the fuzzy speed controller. Comparing with conventional PI speed controller, the performances of proposed fuzzy controller such as dynamic responses and its the robustness against load disturbance were substantially improved.

Design and Tuning of Micro 5KVA Machine's AVR/PSS Robust Control Parameters (축소형 5KVA 동기발전기 AVR/PSS 강건한 제어정수 설계 및 튜닝)

  • Kim, D.J.;Moon, Y.H.;Kim, T.K.;Shin, J.H.
    • Proceedings of the KIEE Conference
    • /
    • 2000.07a
    • /
    • pp.165-168
    • /
    • 2000
  • This paper describes the guideline of design and tuning of practical Micro 5KVA machine's digital AVR/PSS control parameters by using the computer models and testing on-line AVR step test of laboratory simulator under the no-load or load conditions. The suggested procedures can be also applied to the large scaled machine's AVR/PSS control parameter tuning in KEPCO system.

  • PDF

The Study on IM Drive using a Auto-Tuning Fuzzy PID Control Algorithm (자동동조(自動同調) 퍼지 앨고리즘을 사용한 유도전동기(誘導電動機) 구동(驅動)에 관한 연구(硏究))

  • Yoon, Byung-Do;Kim, Yoon-Ho;Jung, Jae-Ruon;Kim, Chun-Sam;Chae, Su-Hyung
    • Proceedings of the KIEE Conference
    • /
    • 1992.07b
    • /
    • pp.1242-1244
    • /
    • 1992
  • This Paper deals with a Auto-Tuning Fuzzy PID Controller used in real time and its application for induction motor. The control strategy of the controller is able to develop and improve automatically. The new Auto-Tuning Fuzzy PID Control algorithm which modifies the fuzzy control decision table is presented in this paper. It can automatically refine an initial approximate set of fuzzy rules. The possibility of applying fuzzy algorithms in faster response, and more accurate was compared with other industrial processes, such as AC Motor driver. The performance of Proportional_Integral Derivative(PID) control and this fuzzy controllers is compared in terms of steady_state error, settling time, and response time. And then, Limitations of fuzzy control algorithms are also described.

  • PDF

On-Line Fuzzy Auto Tuning for PID Controller (PID 제어기의 On-Line 퍼지 자동동조)

  • Hwang, Hyeong-Su;Choe, Jeong-Nae;Lee, Won-Hyeok
    • The Transactions of the Korean Institute of Electrical Engineers D
    • /
    • v.49 no.2
    • /
    • pp.55-61
    • /
    • 2000
  • In this paper, we proposed a new PID tuning algorithm by the fuzzy set theory to improve the performance of the PID controller. The new tuning algorithm for the PID controller has the initial value of parameter Kc, $\tau$I, $\tau$D by the Ziegler-Nichols formula using the ultimate gain and ultimate period from a relay tuning experiment. We get error and error change of plant output correspond to the initial value and new proportion gain(Kc) and integral time($\tau$I) from fuzzy tunner. This fuzzy tuning algorithm for PID controller considerably reduced overshoot and rise time compare to any other PID controller tuning algorithms. In real parametric uncertainty systems, the PID controller with Fuzzy auto-tuning give appreciable improvement in the performance. The significant properties of this algorithm is shown by simulation In this paper, we proposed a new PID algorithm by the fuzzy set theory to improve the performance of the PID controller.

  • PDF

PID Control of Poly-butadiene Latex(PBL) Reactor Based on Closed-loop Identification and Genetic Algorithm

  • Kwon, Tae-In;Yeo, Yeong-Koo;Lee, Kwang Hee
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 2003.10a
    • /
    • pp.2600-2605
    • /
    • 2003
  • The PBL (Poly-butadiene Latex) production process is a typical batch process. Changes of the reactor characteristics due to the accumulated scaling with the increase of batch cycles require adaptive tuning of the PID controller being used. In this work we propose a tuning method for PID controllers based on the closed-loop identification and the genetic algorithm (GA) and apply it to control the PBL process. An approximated process transfer function for the PBL reactor is obtained from the closed-loop data using a suitable closed-loop identification method. Tuning is performed by GA optimization in which the objective function is given by ITAE for the setpoint change. The proposed tuning method showed good control performance in actual operations.

  • PDF

PID auto-tuning controller design via fuzzy logic

  • He, Wei;Yu, Tian;Zhai, Yujia
    • Journal of the Korea Convergence Society
    • /
    • v.4 no.4
    • /
    • pp.31-40
    • /
    • 2013
  • PID auto-tuning controller was designed via fuzzy logic. Typical values such as error and error derivative feedbackwere changed as heuristic expressions, and they determine PID gain through fuzzy logic and defuzzification process. Fuzzy procedure and PID controller design were considered separately, and they are combined and analyzed. Obtained auto-tuning PID controller by Fuzzy Logic showed the ability for less than 3rd order plant control.

Hybrid Self-Tuning Control of a Single rod Hydraulic Cylinder with Varying Payload (가변 하중을 갖는 편로드 유압 실린더의 합성 자기동조 제어)

  • Kim, M.S.;Kim, J.T.;Han, K.B.
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.14 no.12
    • /
    • pp.174-181
    • /
    • 1997
  • A proposed hybrid self-tuning control scheme for single rod hydraulic cylinder which has varying loads is presented here. An adaptive controller is developed for the system that use feedforward and P feedback control for simultaneous parameter identification and tracking control. Through experimental results, the performance comparison of the hybrid self-tuning controller with a constant gain P contro- ller clearly shows its superior ability in handling load changes in quiescent states.

  • PDF