结构振动系统辨识理论的幅值分析法

本文在 Natke H.G 提出的相位分离技术和参数调整法的基础上,采用状态矢量,利用被辨识振动结构系统的系统分析理论计算和模型实测的固有频率分布与模态结果,通过建立残差与评价函数,求泛函极值,得到参数估计的调整系数.经过数据处理后的参数矩阵,作为系统分析的原始数据更为合理.

Amplitude Analysis Method for System Identification of Vibrating Structures

Natke H.G.has presented the phase separate technique and parameter adjustment method.Based on his techniques,we bave developed a new method, that is called AAM(Amplitude Analysis Method).The key points of the AAM are to apply the results of the syetem analysis and the model experi- ment to the phase separate technique.Assuming residual function and cost function,we can determine the variation to obtain a set of adjustment coe- fficients for a parameter matrix.Since the data can be used for the system analysis,it is believed that the new mothed may be reasonable and conven- ient.