Terminal Sliding Mode Based Vector Control of Permanent Magnet Synchronous Motor

In the field-oriented vector control strategy of permanent magnet synchronous motor (PMSM), conventional PI regulators are often used to realize controls of speed loop and current loop, which have some shortcomings such as weak antiinterference ability and poor robustness. In this paper, the terminal sliding mode control method is applied to PMSM field-oriented vector control. Combining the terminal sliding mode theory with the PMSM mathematical model, a joint control method for both speed loop and iq loop is proposed, which can improve the system control performance and reduce the controller number. The effectiveness of the proposed control strategy is verified by matlab/simulink simulation.