电磁力控制的主动减振实验

用传递函数法对受随机激励的结构作主动减振设计时所获得的反馈,本文以电磁激振器作为控制器进行主动减振实验,试验在受低频正弦和宽带随机两种激励的四自由度汽车模型上进行。结果表明,电磁激振器作为控制器具有很小的机械滞后特性,适用于作低频、宽带的随机振动主动减振,减振效果达到80%以上。

EXPERIMENT OF ACTIVE CONTROL USING ELECTROMAGNETIC FORCE

In the use of the feedback designed by the transfer function method, the experiment on active control, in which an electromagnetic exciter is used as an actuator, is studied in this paper. The experiment has been made using a car model with four degrees of freedom (4 DOF) excited by low frequency sine or wider bandwidth random signal. This shows that the electromagnetic exciter is suitable for active control in the case of low frequency and wider bandwidth random signal because of its short mechanical delay, and the attenuating effect is above 80%.