Study of AC PMSM speed servo system anti-windup design

Classical anti-windup algorithm belongs to 'two-step' design strategy. But it has the substantial limitations: l.not easily set reasonable the compensator coefficient; 2.had difficult to system synthesis, namely, it hadn't explicit performance with the compensated system. In order to prevent the problems by using classical Anti-windup (AW), the state tracking AW design is presented. The proposed compensator is determined explicitly by the ideal linear plant and its controller parameters and is independent of the reference inputs and shape of state constraints. So it implied that once a linear controller has been designed a prior, the resulting compensator is determined immediately and force the system output follow the output of linear system as closely as possible. The method is validated by compared with PI controller using classical AW design. Simulation and experimental results demonstrate that proposed method improve the performance of AC PMSM speed servo system.