Parameters adaptive backstepping control of PMSM using DTC method

The torque and flux ripple of traditional DTC control PMSM is large, due to the lack adaptive system, change system parameters has a great impact on steady transient performance motor speed. Based algorithm, parameter identification backstepping algorithm proposed in this paper. Because controller used replace PI hysteresis controller, steady-state obviously improved. At same time, designed, which can effectively suppress influence changes speed performance. simulation results verify correctness effectiveness algorithm. significantly improve under condition mutation.