王胜春,韩捷,李志农,李剑峰.谐波小波包自适应分解在故障诊断中的应用[J].农业机械学报,2007,38(10):174-177.
.[J].Transactions of the Chinese Society for Agricultural Machinery,2007,38(10):174-177.
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谐波小波包自适应分解在故障诊断中的应用   [下载全文]
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DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  故障诊断  谐波小波包  自适应分解  匹配追踪
基金项目:
王胜春  韩捷  李志农  李剑峰
山东建筑大学
中文摘要:将谐波小波包与匹配追踪方法相结合,提出了谐波小波包自适应分解的新方法。根据信号特征自适应选择谐波小波包字典内的时频原子,可以将非平稳振动信号既不交叠又无遗漏地分解到相互独立的频带上去,算法实现简单,频率分辨率好。通过仿真算例将该法与小波包变换、小波包追踪结果相比较,验证了该方法时频定位性好的优越性。将该方法应用于轴承和转子的故障诊断,结果表明,故障特征提取是有效的。
Key Words:
Abstract: Combined harmonic wavelet packet with matching pursuit, an adaptive decomposing method was presented. In the proposed method, the time-frequency atoms could be adaptively selected from the harmonic wavelet packet dictionary. Non-stationary signal could be decomposed into a number of independent frequency sub-bands and the frequency overlapping and leakage was avoided. The proposed algorithm is simple and has good resolution. The simulation results showed that the proposed approach is superior to the wavelet packet transform and matching pursuit based on wavelet packet. At last, the proposed method has been applied to the fault diagnosis of bearing and rotor system, the experiment result showed the proposed method is effective.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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