In order to improve the control performance of the fault-tolerant permanent magnet vernier rim-driven motor (FT-PMV-RDM) position sensorless control system,the speed controller and rotor position estimation algorithm of the system were studied. A fast super-twisting sliding mode controller was used to reduce the chattering phenomenon existing in tradi-tional sliding mode controller,and an adaptive sliding mode observer was used to estimate the rotor position to improve the position estimation accuracy. A simulation model of the FT-PMV-RDM position sensorless control system was built in the Matlab/Simulink environment. The simulation results show that the control method proposed in this paper can accurately estimate the speed and rotor position information of FTPMV-RDM in the absence of fault and one-phase open-circuit fault,and the system has good dynamic and static performance.
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