摘要：永磁同步电机(PMSM)是一个多变量强耦合非线性系统，对外部扰动和内部参数变化较为敏感。传统PI调节器由于控制方法简单，被广泛应用于PMSM调速系统，但它往往不能满足高性能控制要求。为此，将滑模变结构控制(SMC)应用于PMSM调速系统，采用全局快速终端滑模(GFTSM)控制策略，给出了控制器的设计方法，并对比传统PI控制方法进行仿真分析。结果表明，相对于PI调节，该控制策略使系统具有响应快、稳定性好、超调量小以及抗负载扰动强等优点，提高了系统的鲁棒性。

关键词：永磁同步电机；全局快速终端滑模；调速；鲁棒性
Abstract: The permanent magnet synchronous motor (PMSM) is a widely used nonlinear multivariable coupled system. It is sensitive to the load disturbance and the change of interior parameter. Traditional PI controller is widely used in the speed control of PMSM for its simplicity, but it can't meet the need of high performance. Therefore, gave the application of sliding mode control (SMC) in PMSM speed control system, using a kind of control strategy named global fast terminal sliding mode (GFTSM), gave the design method of the controller, and had a simulation analysis after compared with traditional PI control method. The results demonstrate that compared with PI adjustment, the system has the advantages of fastness rapid response, stability, robustness, no overshoot and rejecting load disturbance.

Key words: permanent magnet synchronous motor; global fast terminal sliding mode; adjustable speed; robustness