基于滑模观测器的感应电机力矩伺服系统研究

Research of Torque Servo System of Induction Motor Based On Sliding Mode Observer

针对传统磁链观测方式对电机参数变化敏感、鲁棒性差影响感应电机力矩伺服系统稳定性的问题,建立了在静止两相坐标系下感应电机数学模型,采用滑模观测器观测感应电机定子磁链,利用定、转子磁链间的关系,得到转子磁链,并完成了滑模观测器下的感应电机力矩伺服系统仿真。仿真结果表明:滑模观测器下的感应电机力矩伺服系统的力矩跟随性能满足力矩伺服系统的性能要求,且鲁棒性较高。

The way of traditional flux linkage observation is sensitive to motor parameters and has poor robustness affecting the stability of the torque servo system of induction motor. Constructing the mathematical model of induction motor under static two-phase coordinate system,it used the sliding mode observer to observe the stator flux linkage of induction motor,and used the relationship between the rotor flux linkage and rotor flux linkage to get rotor flux linkage and completed the simulation of torque servo system of induction motors based on sliding mode observer. The simulation results show that the torque tracking performance of torque servo system of induction based on sliding mode observer can satisfy the requirements of the performance of the torque servo system. And the robustness is higher.