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简述了小波变换的基本理论；给出了四杆机构输出函数的小波描述和小波分解的特性；利用Ｄａｕｂｅｃｈｉｅｓ正交小波对机构的输出函数进行了变换和分析，提出了机构输出函数小波特征参数的概念，为机构的函数尺寸综合时的参数识别提供了依据，最后给出了一个尺度综合的算例。
The basic theory of wavelet transform is briefly introduced. The wavelet description and wavelet decomposition of the output function of four-bar mechanism are given. The output function of the mechanism is transformed and analyzed by Daubechies orthogonal wavelet, and the wavelet output characteristic parameters The concept provides the basis for parameter identification when the function size of the organization is integrated. Finally, an example of the scale synthesis is given.