Fast-super-twisting sliding mode speed loop control of permanent magnet synchronous motor based on SVM-DTC

Aiming at the problems of frequent overshoot and slow response time in space vector direct torque control system permanent magnet synchronous motor, a strategy based on fast-super-twisting algorithm was proposed. Based traditional super-twisting algorithm, fast terminal sliding mode reaching law (FTSMRL) is introduced strategy, which improves algorithm’s robustness convergence speed, suppresses chattering. The stability proved by using quasi-quadratic Lyapunov function. Simulation results show that proposed can effectively improve speed system, significantly reduce