基于滑模变结构的异步电机矢量控制系统设计

本文设计了一种基于滑模变结构的异步电机矢量控制系统。首先,通过坐标变换,建立异步电机在同步旋转正交坐标系(按转子磁链进行定向)上的数学模型,即可得到其等效的直流电机模型。其次,基于变结构理论,可以设计转速调节器,组成基于滑模变结构的异步电机矢量控制系统。最后,为了验证该设计方法的有效性,在Matlab/Simulink平台下搭建系统的模型并进行仿真。仿真表明,与PID控制相比该控制系统具有很强的鲁棒性。

The Design of Asynchronous Motor Vector Control System Based on Sliding Mode Variable Structure

This paper designs an asynchronous motor vector control system based on sliding mode variable structure. Firstly, according to the coordinate transformation, the mathematical model of asynchronous motor is established in the synchronous rotating orthogonal coordinate system (rotor flux linkage oriented), and then the equivalent DC motor model is obtained. Secondly, based on the sliding mode variable structure theory, the speed regulator is designed, which is composed of asynchronous motor vector control system based on sliding mode variable structure. Finally, in order to demonstrate the effectiveness of the design method, the model of the whole system is built and carried out based on the Matlab/Simulink. Simulation results verify that the control system has strong robustness by comparing with the PID control strategy.