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Daubechies小波在机床动态误差特征提取与辨识中的应用

Keywords: 超精密机床,误差辨识,特征提取,小波分析,功率谱密度

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Abstract:

针对机床各部件的动态信号特征在加工工件的面形误差中提取困难的问题,结合加工工件面形检测结果,提出基于小波变换和功率谱密度分析的超精密机床动态误差特征提取的新方法.采用Daubechies小波变换,从加工检测信号处分解出了低频和高频信号.同时,将小波变换与功率谱密度相结合,实现了机床动态误差特征的有效提取与辨识。

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