摘要
在参考模型自适应系统(MRAS)的理论基础上,讨论并分析了三种转速观测方法。将其中对定子参数具有完全鲁棒性的无功功率的MRAS法用于电机无速度传感器直接转矩控制系统中。该方法不受电机参数变数的影响,具有较高的稳定性和控制精度。采用跟踪-微分器解决了纯微分的问题,取得了良好的效果。使用Matlab/Simulik对电机控制系统进行了仿真。仿真结果证明了此方法的有效性。
Three kinds of speed observation methods based on MRAS were discussed in this paper. The method is proposed implement a speed sensorless direct toque control of induction motor because it is immune to influence of motor parameter variation. In this paper, tracking-differentiator was used to sovle the problem of pure differential coefficient. This method possesses high control accuracy and stability. Simulation of Matlab/Simulink results show the feasibility of the proposed strategy.
出处
《微电机》
北大核心
2008年第3期75-77,87,共4页
Micromotors
