时滞滤波器的阻尼幅频特性分析

Analysis of Time Delay Filter with Damped Frequency Magnitude Characteristic

常规频率特性无法解释时滞滤波器抑制柔性机构残留颤抖的内在本质 .提出了阻尼幅频特性的概念 ,分析表明 ,时滞滤波器具有完全滤除某一衰减正弦振荡信号的能力 ,从而避免了激发对象的振动模态 ,能够抑制甚至完全消除残留颤抖 .将时滞滤波器应用到有阻尼弹簧 -质量系统的定位控制 。

The internal mechanism of time delay filter to reduce the residual vibration of flexible structures cannotbe explained with the normal frequency characteristic.Damped frequency magnitude characteristic, introduced in this paper,shows that time delay filter can eliminate the damped sinusoid signal in certain frequencies.So,the oscillatory mode will not be activated and the residual vibration can be reduced or e- liminated.Desirable performance is obtained in the example of damped spring- mass system controlled by the time delay filter.