Adaptive switching gain sliding mode control for speed regulation in PMSMs

Authors : Yanwei HUANG, Yuqing XIE, Zheyi LIU

Pages : 3208-3218

View : 15 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :To suppress uncertainties caused by parametric variations or disturbances, an adaptive switching gain insert ignore into journalissuearticles values(ASG); is proposed for integral sliding mode control insert ignore into journalissuearticles values(ISMC); to regulate speed in permanent magnet synchronous motors insert ignore into journalissuearticles values(PMSMs);. According to system uncertainties, the ASG is designed to adjust the switching gain to suppress the chattering. The adaptive law is a positive value resulting in an increment of the switching gain when the tracking trajectory is outside the boundary layer. Conversely, it is negative with a decrement of the gain. Further, it improves a convergent rate by the function of the reciprocal of the tracking error when the trajectory enters the sliding phase. ISMC with the ASG is applied to a PMSM experiment with the result that this method can effectively suppress high frequency chattering and shows excellent steady state performance of the current loop and speed in a servo system.
Keywords : Permanent magnet synchronous motors, integral sliding mode control, switching gain, adaptive law, chattering