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 ,获得了满意的控制效果 Conventional frequency characteristics can not explain the inherent nature of the delay filter to suppress the residual tremor of the flexible mechanism. The concept of damping amplitude-frequency characteristics is presented. The analysis shows that the delay filter has the ability to completely filter out a decaying sinusoidal oscillation signal, Excited the vibration mode of the object, can restrain or even completely eliminate the residual tremor.The delay filter is applied to the damped spring-mass system positioning control, and obtains the satisfactory control effect