多自由度非线性系统的频域识别

Parameter Identification of Nonlinear System with Multi degree of Freedom in the Frequency Domain

通过拟合近似频响函数，在频域中研究多自由度非线性系统参数的识别问题，实例计算结果表明本文的方法是正确的．

Through the curve fit of the approximate frequency response function the identification of parameters in the nonlinear system with multi degree of freedom in the frequency domain is studied .The result of an example shows that the preposed method is efficient.