基于自适应Backstepping的PMSM速度控制器设计

为了设计交流永磁同步电机的高性能速度控制器,提出了一种基于自适应Backstepping的速度控制器设计方法.基于永磁同步电机的数学模型,以速度跟踪为目标,把系统分解成几个子系统,为每个子系统设计Lyapunov函数和中间虚拟控制量,再后退到整个系统,得出实际控制量电压的直轴和交轴分量.为了抑制永磁同步电机存在的参数摄动、负载摄动等不确定因素对系统性能的影响,引入自适应与反推控制相结合的策略,使系统能够根据参数的变化自行调整,保证系统的性能及其稳定性.Matlab仿真结果表明,系统具有良好的稳态精度和动态性能.

PMSM Speed Controller Design Based on Adaptive Backstepping Control

To design a high performance speed servo controller for PMSM,a method based on adaptive backstepping is proposed.Based on the mathematical model of PMSM,and for the purpose of speed tracking,the PMSM system is divided into several sub-systems.Lyapunov functions and middle virtual control variables are designed for them,and finally actual controller voltage is designed.In order to attenuate negative effects on system performance caused by parametric uncertainty and load disturbances,adaptive strategy is adopted.The simulation results by suing Matlab show that controller has good steady state accuracy and dynamic performance.