Chen Wenjie

Permanent Magnet Synchronous Motor Vector Control Based on Weighted Integral Gain of Sliding Mode Variable Structure

Aiming at the slow dynamic response and the chattering problem from conventional exponential reaching law sliding mode applied in permanent magnet synchronous motor vector control in current loop, firstly this paper used weighted integral type sliding mode control algorithm to design the current loop controller. For the second step, the stabil- ity of the system was proved with lyapunov stability theory. Simulation results show that current controller of vector con- trol system based on weighted integral gain sliding mode has strong robustness to parameter perturbation and external dis- turbance compared with traditional sliding mode control, and improves systems dynamic response and control precision.