Multi-variable continuous higher-order sliding mode control for PMSM

This paper proposes a multi-variable continuous higher-order sliding mode control scheme for PMSM according to the characteristic of its dynamic,and a speed controller and current controller are designed. The state feedback is used to decouple the system, and the control problem is changed to the stability control of the uncertain multivariable integral chains. Firstly,a finite time continuous control algorithm is designed to guarantee rapid convergence of system states,and then the multivariable non decoupling quasi continuous polynomial algorithm is designed to achieve robustness of the system uncertainties. The simulation results show that the proposed algorithm is robust to parameter perturbation and load torque disturbance, and it can effectively reduce the chattering of the system.