无速度传感器矢量控制系统的建模与仿真

Modeling and Simulation of Speed Sensor-less Vector Control System

根据异步电动机在两相静止α-β坐标系上的数学模型,建立了异步电动机的仿真模型。首先介绍了采用模型参考自适应(MARS)原理对无速度传感器控制系统中转速进行辨识的方法。在此基础上,对无速度传感器矢量控制系统进行了建模与仿真。仿真结果证明该系统具有超调量小、调速范围宽、响应速度快等优点,且模型直观,不用编程,为以后用DSP实现该系统打下了良好基础。

According to the mathematical model of induction motor on the two-phase stationary α-β reference frame,a simulation model of induction motor is established.A way of speed identification for speed sensor-less vector control system based on model reference adaptive system(MRAS)is introduced in detail.Based on this,the model of speed sensor-less vector control system is built and simulated.The simulation results have proved that the system is of advantages such as small overshoot,wide speed-regulating range,rapid respond time and so on,and the modular is directly viewed and is unnecessary for programming,which lays a good foundation for implementing the system with DSP in the future.