非线性振动系统参数识别的频响函数

Frequency-response Functions for Parameter Identification of Nonlinear Vibration Systems

在不同激励、不同共振情况下，非线性系统的一次近似频响函数是不同的，有的包含了系统的全部参数，有的只包含了部分参数．本文研究多自由度非线性系统的一次近似频响函数的形式以及用它们来识别系统参数的可能性．

The first approximate frequency-response functions are different in the case of different excitation and resonance. Some of them contain all the parameters of system and some contains only a part of the parameters. In this paper,we study the first approximate frequency-response functions of nonlinear system with multi-degree of freedom and discuss the possibility of identifying the parameters.