• 제목/요약/키워드: anti-windup control

검색결과 87건 처리시간 0.029초

PID제어계를 위한 누적방지기법에 관한 연구 (A Study on Anti-Windup Schemes for PID Control Systems)

  • 류지수;김영곤;박태건;이기상
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2000년도 하계학술대회 논문집 D
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    • pp.2323-2326
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    • 2000
  • In this paper, the anti-windup schemes developed so far are summarized and the similarities/differences of those schemes are discussed. The anti-windup schemes are applied to a DC servomotor system with PID controller to perform comparative study and sensitivity analysis. Based on those results, some criteria for choosing anti-windup scheme are suggested. The results of this study provide a very useful guideline for selecting and designing the anti-windup scheme for various types of PID control systems.

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Comparison and Evaluation of Anti-windup PI Controllers

  • 이형란;신용환;신휘범
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2010년도 하계학술대회 논문집
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    • pp.602-603
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    • 2010
  • This paper presents a comparison and evaluation between different anti-windup proportional-integral (PI) controller strategies used in variable-speed motor drives, and the anti-windup methods are to the speed control of a vector-controlled induction motor driven by a pulse width modulated (PWM) voltage-source inverter (VSI). The simulation results are compared for the different operating conditions and the characteristic of speed response has been analyzed in order to obtain the optimal performance of anti-windup PI controller method.

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복소 벡터 동기좌표계 비례 적분 전류 제어기의 안티와인드업 이득 설정 (Anti-windup for Complex Vector Synchronous Frame PI Current Controller)

  • 유현재;정유석;설승기
    • 전력전자학회논문지
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    • 제11권5호
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    • pp.404-408
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    • 2006
  • 본 논문에서는 복소 벡터 동기 좌표계 비례 적분(PI) 전류 제어기의 안티 와인드업(anti-windup)이득 설정에 대해 논의한다. 복소 벡터 동기 좌표계 비례 적분 전류 제어기는 시스템 제정수 변동에 기존의 비례 적분 전류 제어기 보다 더 강인한 특성을 보인다. 복소 벡터 전류 제어기 역시 적분기를 포함하고 있으며, 엑츄에이터(actuator)의 물리적인 한계로 전압이 포화되는 경우에는 안티 와인드업이 필요하게 되고, 적절치 못한 안티 와인드업 이득 설정은 제어 시스템의 동특성을 저하시킬 수 있다. 따라서 복소 벡터 동기 좌표계 비례 적분 전류 제어기에 적합한 안티 와인드업 이득을 제안하였고, 제안된 알고리즘의 유효성은 실험을 통하여 검증하였다.

가변속 전동기구동을 위한 새로운 반포화 PI 제어기 (New Anti-windup PI Control for Variable-Speed Motor Drives)

  • 신휘범;이정훈;정세교
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 1997년도 전력전자학술대회 논문집
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    • pp.357-363
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    • 1997
  • The windup phenomenon appears and results in the performance degradation when the PI controller output is saturated. A new anti-windup PI controller is proposed to improve the control performance of the variable-speed motor drives and it is experimentally applied to the speed control of a vector-controlled induction motor driven by a pulse width modulated(PWM) voltage source inverter (VSI). The integral state is separately controlled corresponding to whether the PI controller output is saturated or not. The experimental results show that the speed response has the much improved performances such as small overshoot and fast settling time over the conventional anti-windup technique. Although the operating speed command is changed, the similar control performance can be obtained by using the PI gains selected in the linear region.

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적분형 슬라이딩 서피스를 이용한 TDCSA(Time Delay Control With Switching Action)의 와인드업 방지를 위한 기법의 개발 (The Development of Anti-Windup Scheme for Time Delay Control with Switching Action Using Integral Sliding Surface)

  • 이성욱;장평훈
    • 대한기계학회논문집A
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    • 제26권8호
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    • pp.1534-1544
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    • 2002
  • The TDCSA(Time Delay Control with Switching Action) method, which consists of Time Delay Control(TDC) and a switching action of sliding mode control(SMC), has been proposed as a promising technique in the robust control area, where the plant has unknown dynamics with parameter variations and substantial disturbances are preset. When TDCSA is applied to the plant with saturation nonlinearity, however, the so-called windup phenomena are observed to arise, causing excessive overshoot and instability. The integral element of TDCSA and the saturation element of a plant cause the windup phenomena. There are two integral effects in TDCSA. One is the integral effect occurred by time delay estimation of TDC. Other is the integral term of an integral sliding surface. In order to solve this problem, we have proposed an anti-windup scheme method for TDCSA. The stability of the overall system has been proved for a class of nonlinear system. Experiment results show that the proposed method overcomes the windup problem of the TDCSA.

Anti-windup Integral-Proportional Controller for Variable-Speed Motor Drives

  • Park, Jong-Gyu;Chung, Jae-ho;Shin, Hwi-Beom
    • Journal of Power Electronics
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    • 제2권2호
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    • pp.130-138
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    • 2002
  • The windup phenomenon appears and degrades control performance when a controller with integrating action is used and plant input is limited. An anti-windup integal-proportional(IP) controller is proposed for the variable-speed moter drives and it is experimentally applied to the speed control of a vector-controlled induction moter driven by a pulse width modulated (PWM) voltage source inverter (VSI). The consistency range of the IP controller is firstly derived and the intergal state is controlled to salisfy always the consistency range according to whether the the controller output is saturated or not. Although the operating condition like moter load or speed command is changed under the limited plant input, It is expermentally verified that the speed response has much improved performance, such as no overshoot and fast settling time, and the maximmum plant input is also effectively utilized.

Dynamic Anti-Windup for Robot Systems with Friction

  • Yoon, S.S.;Yamada, Y.;Park, J.K.;Yoon, T.W.
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2005년도 ICCAS
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    • pp.1966-1971
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    • 2005
  • Though several previous anti-windup techniques have been proposed, they are limited to linear systems or friction is not considered. Thus this paper proposes a compensation scheme for input-constrained robot systems with friction to cope with the windup phenomenon and shows its effectiveness by simulations. Given a feedback linearizing controller for a robot system designed without considering its input constraint, an additional dynamic compensator is proposed to account for the constraint. The dynamic anti-windup is based on the minimization of a reasonable performance index, and properties of the resulting closed-loop are presented.

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궤환선형화 가능한 비선형 시스템의 입력제한을 고려한 동적 와인드엎 방지 (A Dynamic Anti-windup Scheme for Input-constrained Feedback Linearizable Nonlinear Systems)

  • 윤성식;박종구;윤태웅
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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    • pp.534-534
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    • 2000
  • This paper proposes a dynamic compensation scheme for input-constrained feedback linearizable nonlinear systems to cope with the windup phenomenon. Given a feedback linearizing controller for such a nonlinear system designed without considering its input constraint, an additional dynamic compensator is proposed to account for the constraint. This dynamic anti-windup is based on the minimization of a reasonable performance index, and some stability properties of the resulting closed-loop are presented.

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포화 요소가 있는 계를 위한 와인드업 방지 보상 방법 (A novel anti-windup compensation for systems with saturating actuator)

  • 장원욱;박영진
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
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    • pp.299-304
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    • 1991
  • A novel approach based on a nonlinear compensator is proposed to prevent 'windup', which is caused by the saturation of the actuator and the integration action of the controller. The anti-windup compensator is located between the conventional linear controller, designed neglecting the saturation, and the actuator. It was proven based on the describing function method that, if the closed loop control systems are stable assuming no saturation, then there exist a range of compensator gain which prevents any limit-cycle and hence, guarantees the system stability. The computer simulation results show that the compensator proposed in the manuscript can eliminate unstable limit cycle and improve the transient response.

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