| 基于小波变换的超精密车削面形误差的相关性分析 |
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| 引用本文： | 陈东菊,范晋伟,张飞虎.基于小波变换的超精密车削面形误差的相关性分析[J].机床与液压,2011,39(19). |
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| 作者姓名： | 陈东菊 范晋伟 张飞虎 |
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| 作者单位： | 1. 北京工业大学机械工程与应用电子技术学院,北京,100124
2. 哈尔滨工业大学机电工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金项目(50775004) |
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| 摘 要： | 机床加工工件的表面形貌包含大量机床误差信息,此信息含有高频信号部分和低频信号部分,针对这些误差信息,提出一种基于小波变换的误差源辨识方法。将误差源对加工结果影响的仿真结果与实际加工工件的面形检测结果对比,分离出的表面形貌的单尺度上的信息与原信息除了会有相位时移外,还有很多特征相关性。利用小波的变焦特性,采用特征相关性分析方法,从检测结果中确定出对加工结果影响大的机床误差源。
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| 关 键 词： | 小波分析 相关性分析 表面形貌 误差辨识 |
Correlation Analysis of the Turning Surface of Ultra-precision Machine Tool Based on Wavelet Transform |
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| CHEN Dongju,FAN Jinwei,ZHANG Feihu.Correlation Analysis of the Turning Surface of Ultra-precision Machine Tool Based on Wavelet Transform[J].Machine Tool & Hydraulics,2011,39(19). |
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| Authors: | CHEN Dongju FAN Jinwei ZHANG Feihu |
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| Affiliation: | CHEN Dongju1,FAN Jinwei1,ZHANG Feihu2(1.College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing 100124,China,2.School of Mechatronics Engineering,Harbin Institute of Technology,Harbin Heilongjiang 150001,China) |
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| Abstract: | The surface topography of workpiece includes much errors information,and the information contains high frequency signals and low frequency signals.For the error information,a new method of identification errors based on the wavelet transform was proposed.The separated signal on single scale was with much correlate character except shifted phase.The focal variation character of wavelet and the character correlation analysis were used to identify the machine tool error from the test result. |
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| Keywords: | Wavelet analysis Correlation analysis Surface topography Error identification |
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