Novel nonsingular terminal sliding mode for inner-mounted permanent magnet synchronous motor speed regulation

Abstract

For the sake of improving the dynamic response, and the anti-disturbance ability of IPMSM speed regulation, a novel nonsingular terminal sliding mode control (NNSTSMC)is designed in this paper. Firstly, to accelerate the convergence time of IPMSM speed tracking error, the manifold of novel nonsingular terminal sliding mode control (NNSTSMC) is constructed based on tanh function. Secondly, using equivalent control to design the novel nonsingular terminal sliding mode control (NNSTSMC), and introducing a softsign function in the switch robust control to attenuate system chattering. Finally, compared with PI, traditional sliding mode control (SMC), simulation results indicate that the nonsingular terminal sliding mode controller exhibits strong dynamic response performance and robustness.