解决windup问题要回归积分器本身:由于积分器 \frac{1}{s} 本身是个不稳定环节,如果actuator达到limit了,那么反馈控制回路实际就被断开了,那么积分器的输出就会不断增长。那么为了实现anti-windup,我们需要设计控制回路或者某个装置使得积分控制器本身能够被稳定下来。能够实现这样效果的电路或者装置都起到了anti-wind...
2: Actuator saturation →integrator wind-up phenomenon (discussed in detail in [6]) 1 Fig. 3: Limited integrator (hard limits imposed) → conditional integrator, integrator clamping [5][3] Fig. 4: Limited integrator (high feedback gain → Scheme 3) [4][1] 2 Fig. 5: Tracking anti-...
It is based on analytical optimization methods applied for a typical PI controller equipped with an anti-windup corrector. The performance of the corrector is investigated using simulation results for the particular control system assuming different values of gain of the anti-windup loop.关键词: PI...
Park, "Anti-Windup PID Controller With Integral State Predictor for Variable-Speed Motor Drives," IEEE Trans. Ind. Electron., Vol. 59, No. 3, pp. 1509-1516, 2012.H.B. Shin, and J.G. Park, "Anti-Windup PID Controller With Integral State Predictor for Variable-Speed Motor Drives," ...
1. Initially have no integral gain (TI large) 2. Increase KP until get satisfactory response 3. Start to add in integral (decreasing TI) until the steady state error is removed in satisfactory time (may need to reduce KP if the combination becomes oscillatory) Anti-windup in I & PI cont...
Common anti-windup measures include: Disabling the error sum accumulation when the controller output is saturated Disabling the error sum accumulation until the Process Variable is within a certain range (known as the “controllable region) of the Setpoint ...
Anti-reset windup is that the integral term does not accumulate if the controller output is saturated at an upper or lower limit. Derivative KickAlthough the "derivative" term implies de(t)dtde(t)dt, the derivative of the process variable d(PV)dtd(PV)dt is used in practice to avoid a...
Anti-Reset Windup An important feature of a controller with an integral term is to consider the case where the controller outputu(t)u(t)saturates at an upper or lower bound for an extended period of time. This causes the integral term to accumulate to a large summation that causes the co...
If the PI controller computes CO values that are above COmax or below COmin, then we must be concerned about windup and COdesired is set equal to the limiting COmaxor COmin value. The anti-windup logic followed at every loop sample time, T, is thus: ...
Anti-Windup PID Controller With Integral State Predictor for Variable-Speed Motor Drives Hwi-Beom Shin and Jong-Gyu Park, "Anti-Windup PID Controller With Integral State Predictor for Variable-Speed Motor Drives," IEEE Trans. on Industrial ... Hwi-Beom,Shin,Jong-Gyu,... - 《IEEE Transaction...