PMSM非线性解耦控制系统的L2增益干扰抑制

Nonlinear decoupling control for permanent magnet synchronous motor based on L2 gain disturbance attenuation

摘要:

为了克服电机参数变化和负载扰动的不确定性对永磁同步电机动态解耦控制系统性能造成不利影响,提出一种带干扰抑制的永磁同步电机调速系统的非线性解耦控制方法,将参数变化和负载转矩扰动作为扰动输入,基于Lyapunov函数设计系统的状态反馈控制器,使得闭环系统对所有有界干扰是内部稳定的,且从扰动输入到输出满足任意小的有界L 2增益.仿真和试验结果表明:该控制策略能有效地改善调速系统的动态性能,增强其鲁棒性和抗干扰能力.

Abstract:

To eliminate the influence of uncertainty of parameter variations and load disturbance on the performance of the dynamical decoupling drive system of permanent magnet synchronous motors and based on disturbance suppression,a nonlinear decoupling control method is presented for the permanent magnet synchronous motors drive system.A state feedback controller is constructed based on Lyapunov function,which enables the system to be internally stable for all bounded interference and satisfies the arbitrarily small bounded L2 gain from interference input to its output.Simulation and experimental results show that the strategies improve the dynamic performance of the system greatly,and strengthen the robustness and anti-disturbance performance.