Conditioned Super-Twisting Sliding Mode Control for Speed Control of PMSMs

In this paper, the conditioned super-twisting sliding mode algorithm is applied in PMSMs speed control. Firstly, the PMSMs' mathematic model in dq frame is given. Considering the current input saturation, the speed controller is designed based on super-twisting sliding mode algorithm, solving the problem of windup of traditional super-twisting sliding mode controller. Compared to other nonlinear anti-windup controllers, the biggest advantage of it is that it can maintain the original form of the controller when the control input saturation is inactive. Simulations are given to verify the advantages of the presented approach.