精确线性化多输入多输出PMSM非交互式控制

Noninteracting control of multi-input multi-output PMSM based on exact linearization

针对永磁同步电动机的强耦合特性,提出利用状态反馈精确线性化实现多输入多输出永磁同步电动机非交互式控制方法.根据永磁同步电动机的数学模型,运用微分几何理论讨论了永磁同步电动机在多输入多输出情况下可以进行精确线性化的条件,并在此基础上实现了永磁同步电动机的精确线性化.运用状态坐标变换和状态反馈变换完成了非交互式控制设计,对精确线性化的永磁同步电动机设计了比例-积分控制器,并对控制的结果进行了仿真研究.仿真结果表明,利用状态反馈精确线性化方法对永磁同步电动机的多输入多输出线性化能够获得满意的结果.

For the strong coupling characteristic of permanent-magnet synchronous motor （PMSM）,the noninteracting control method of multi-input multi-output PMSM with the state variable feedback exact linearization was proposed. The conditions of exact linearization for multi-input multi-output PMSM were discussed with differential geometry theory based on mathematic model of PMSM,and then the exact linearization was realized for PMSM. The noninteracting control design was completed with state coordinate transformation and state variable feedback transformation. The PI controller was designed for PMSM subjected to exact linearization,and the control results were simulated. The simulation results show that the multi-input multi-output linearization of PMSM using state variable feedback exact linearization method can obtain satisfactory effect.