| 基于小波变换方法的非接触圆度误差检测 |
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| 引用本文： | 费玉石,丁茹,赵永昶. 基于小波变换方法的非接触圆度误差检测[J]. 机械设计与制造, 2011, 0(2) |
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| 作者姓名： | 费玉石 丁茹 赵永昶 |
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| 作者单位： | 1. 辽宁省机械研究院有限公司,沈阳,110032
2. 沈阳理工大学,沈阳,110168 |
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| 摘 要： | 针对圆度误差非接触检测过程中噪声对原始信号产生干扰的问题,提出采用小波变换进行信号降噪处理;讨论了小波理论中的快速变换算法及阈值降噪法的基本原理和处理实测信号的具体步骤;分析了基于小波变换的最小二乘圆法评定圆度误差的算法,并推导了其理论模型;运用Matlab小波工具箱通过实验说明了小波分析处理圆度误差的方法和效果。
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| 关 键 词： | 非接触检测 快速小波变换 阈值降噪 最小二乘圆法 圆度误差模型 |
The wavelet transform method for the detecting of roundness error |
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| FEI Yu-shi,DING Ru,ZHAO Yong-chang. The wavelet transform method for the detecting of roundness error[J]. Machinery Design & Manufacture, 2011, 0(2) |
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| Authors: | FEI Yu-shi DING Ru ZHAO Yong-chang |
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| Affiliation: | FEI Yu-shi1,DING Ru2,ZHAO Yong-chang1(1Liaoning provincial machinery research institute co.,ltd,Shenyang 110032,China)(2Shenyang scientific and industrial university,Shengyang 110168,China) |
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| Abstract: | To solve the noise problem in the noncontact measurement of roundness error.A de-noising approach using wavelet transform for original signal is proposed;The basic principle and the step to carry out of fast wavelet transform and threshold de-noising are discussed;The evaluation rule for roundness error by means of least squares meancircle base on wavelet transform is analysised,and model of roundness error is processed;the examination signal is filtered by taking advantage of the wavelet toolbox of Matlab,... |
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| Keywords: | Noncontact measurement Fast wavelet transform Threshold de-noising Least square circle Roundness error model |
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