内模原理在转台波动力矩抑制中的应用

Application of torque ripple rejection based on internal model principle in test turn table

为了消除系统存在的周期性扰动特别是干扰力矩对系统速率平稳性能的影响,本文对基于内模原理的自适应周期性扰动抑制方法进行了研究,利用该控制策略能够较好的抑制含单一频率、多种频率和时变频率的周期性扰动.并且对扰动频率变化较快时频率估计中出现的波动现象进行了分析.该方法在测试转台模型上进行了仿真,仿真结果显示出了良好的扰动频率辨识能力和对扰动的抑制能力.

In order to eliminate the influence of periodic disturbances on the rate smoothness of the system, an adapting algorithm based on the internal model principle is studied. This method can eliminate periodic disturbances caused by single sinusoidal signal, muhi-sinusoidal signal, and even time-varying sinusoidal signal. Furthermore, the ripple phenomenon occurred in the frequency estimation is studied when the frequency of disturbances changes rapidly. The method is simulated in test turn table, and the result shows that the method has the capability to identify the frequency of periodic disturbances and restrain periodic disturbances with uncertain frequency.