永磁同步电机的非线性自适应解耦控制

Nonlinear Adaptive Decoupling Control for Permanent Magnet Synchronous Motor

为了解决电机参数变化和负载扰动的不确定性、影响基于非线性解耦控制的永磁同步电机调速系统性能的问题,提出了一种带干扰抑制的永磁同步电机调速系统非线性解耦控制方法.该方法利用非线性解耦控制理论的微分几何方法实现永磁同步电机调速系统转速和磁链子系统的动态解耦,并结合自适应策略,将参数变化和负载转矩扰动作为扰动输入,设计了动态自适应状态反馈控制律和参数自适应规律.应用Lyapunov稳定理论证明了算法的稳定性,并实现具有L2暂态性指标的渐进跟踪.仿真和试验结果表明,该控制策略能有效地改善永磁同步电机调速系统的动态性能,增强其鲁棒性和抗干扰的能力.

To solve the uncertainty of parameter variations and load disturbance, a nonlinear decoupling control based on disturbance suppression is presented for the permanent magnet synchronous motors drive system,where the adaptive control is combined with nonlinear decoupling control, and the parameter variations and load disturbance are regarded as the disturbance input. The state feedback adaptation law and parameter adaptation law are designed with Lyapunov theory to ensure the system convergence and the asymptotic tracing based on L2 transient characteristics. The simulation and experiments show the greatly improved dynamic performance, robustness and anti-disturbance capacity of the system.