| 基于小波的AWJ表面拓扑结构特征分析 |
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| 引用本文： | 吴松林,刘苍毅,J.Valicek.基于小波的AWJ表面拓扑结构特征分析[J].空军工程大学学报,2005,6(4):81-84. |
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| 作者姓名： | 吴松林 刘苍毅 J.Valicek |
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| 作者单位： | 空军工程大学,工程学院,陕西,西安,710038;空军工程大学,理学院,陕西,西安,710051;捷克Ostrava,技术大学,机械工程学院,Czech Republic Ostrava-Poruba,1578033 |
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| 基金项目： | 国家留学基金、捷克科学基金资助项目（the Czech Science Foundation Proiect＂ Machine Fault Diagnostics＂,101/04/1530） |
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| 摘 要： | 为了详细地研究水切割-AWJ（abrasive water jet）表面的主要特征，本文分别研究了由传统接触式测量仪和光学测量仪获得的信号。通过对信号的小波分解和重构，提取了形态误差、波纹度以及粗糙度等表面特征。另外，本文还详细地论述了小波基函数的选择以及小波分解层次确定等基本的应用问题。实验结果表明小波能够有效地应用于AWJ表面拓扑结构特征的分析和描述。
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| 关 键 词： | 小波 表面拓扑 信号处理 |
| 文章编号： | 1009-3516（2005）04-0081-04 |
| 收稿时间： | 2004-09-10 |
| 修稿时间： | 2004年9月10日 |
Wavelet-based Separation for Synthetic Topographical Characterization of Surface Prepared by Abrasive Water Jet |
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| WU Song-lin,LIU Chang-yi,J. Valicek.Wavelet-based Separation for Synthetic Topographical Characterization of Surface Prepared by Abrasive Water Jet[J].Journal of Air Force Engineering University(Natural Science Edition),2005,6(4):81-84. |
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| Authors: | WU Song-lin LIU Chang-yi J Valicek |
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| Institution: | WU Song-lin~1,LIU Chang-yi~2,J. Valicek~3 |
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| Abstract: | In order to study the synthetic topographical characterization of surface created by abrasive water jet (AWJ) and carry out a detailed research for the process of the surface creating, this paper researches the surface signals obtained by both the contact profiler and a new developed optical instrument. Through wavelet decomposition and re-construction of surface signal, surface features, such as form error, waviness and roughness are separated rationally. Some fundamental issues, such as the selection of wavelet bases and the determination of wavelet decomposition level are discussed in detail. The results of a series of experiments show the efficiency of the wavelet-based method. |
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| Keywords: | wavelet surface topography signal processing |
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