【摘要】 永磁同步电机(PMSM)是一个典型的非线性多变量强耦合系统,对外界扰动及内部参数变化较为敏感。传统的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。本文将滑模变结构控制(SMC)应用于PMSM调速系统,针对一般滑模控制中控制量的求取需整定多个参数范围带来的复杂性问题,结合趋近律法设计了一种变参数SMC方法,给出了控制器的设计方法,并对所设计的系统进行了仿真分析和实验研究。结果表明该控制器使系统具有快速性、稳定性、无超调以及抗负载扰动强等优点,提高了系统的鲁棒性。更多还原

【Abstract】 The permanent magnet synchronous motor (PMSM) is a widely used typical 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. We should give the range of the coefficient when confirm the controller in sliding model control(SMC). Based on the problem this paper proposes a variable SMC for PMSM speed control system combined with reaching law control, and give the process of controller’s design. Simulation and experiment research are done on the speed control system respectively. The results demonstrate that the system has the advantages of fastness rapid response, stability,robustness, no over-shoot and rejecting load disturbance.更多还原