Nonsingular terminal sliding mode control for speed regulation of permanent magnet synchronous motor with parameter uncertainties and torque change

This paper mainly studies the speed control for a permanent magnet synchronous motor (PMSM) system with parameters uncertainties and torque change. PMSM is a typical nonlinear multivariable coupled system, and is sensitive to the load disturbance and the changing of motor parameters. Hence, the drive performance of PMSM is deteriorated when faced with all kinds of disturbances. A new control algorithm based on nonsingular terminal sliding mode control (NTSMC) is designed to replace the traditional sliding mode control (SMC) in this paper, which can provide effective control for the speed regulation of PMSM servo system with parameter uncertainties and torque change. The high performance in simulation results are proposed to verify the effectiveness of this proposed method.

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