中文摘要：

主动控制结构主要运用于包括振动、声学、转子动力学的一些工程项目中。对于各种主动结构,其控制律显然是最能反映主动结构动力学特征的参数。在对相关参数进行了初步的探讨后,得到了在单点控制单点反馈条件下,对其反馈信号类型及其反馈增益的辨识公式。该方法由频响函数直接构造,其表达简洁,具有一定的工程实用价值。通过实例的数值计算也证实了该方法的正确性。

英文摘要：

Active structures are applied mainly in the engineering objects which include vibroacoustics,rotor dynamics,or active control.The control law is the key parameter which can reflect the dynamic characteristics of the active structures.In this paper,the control law of the active structures is discussed.A formula for identifying the type of feedback signal and its gain value is obtained under single control and single feedback conditions.The method is constructed by using the frequency response function（FRF） directly.In addition,the expression of the identification method is simple and convenient for engineering application.The result of numerical simulation of an example supports the validity of this method.