考虑激励确定作动器优化布置方法的研究

作动器优化布置是振动主动控制中的一个重要问题。本文考虑了外部激励的作用，提出了一种与独立模态空间控制方法结合使用的作动器位置优化准则。为使系统具有最大可控度，依据被控结构动态响应中各阶模态贡献的大小，建立相应的目标函数通过求其极大值，可得出作动器优化布置方案。最后通过一个算例验证了所提出理论与方法的有效性，从算例中可以看出，作动器的优化位置与激振力的位置和频率有直接联系。

Actuator Placement Considering Excitations

Actuator optimal placement is an important problem of active vibration control. In this paper, a new optimal criterion for actuator position optimum is proposed , which must be used together with independent model space control method. The e ffect of external excitations is taken account of this criterion. To make the sy stem most controllable, related object function is set up according to model pro portions in dynamc response of controlled structures. Optimal actuator placement is available through finding out the maximum value of the object function. The p roposed theory and method is validated by an example. It can be seen from the ex ample that optimal actuator placement is concerned with location and frequency o f external excitations.