| Research on Auto-detection for Remainder Particles of Aerospace Relay Based on Wavelet Analysis |
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| 作者姓名： | GAO Hong-liang ZHANG Hui WANG Shu-juan |
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| 作者单位： | GAO Hong-liang*，ZHANG Hui，WANG Shu-juan Department of Electrical Engineering，Harbin Institute of Technology，Harbin 150001，China |
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| 摘 要： | Aerospace relay is one kind of electronic components which is used widely in national defense system and aerospace system. The existence of remainder particles induces the reliability declining, which has become a severe problem in the development of aerospace relay. Traditional particle impact noise detection (PIND) method for remainder detection is ineffective for small particles, due to its low precision and involvement of subjective factors. An auto-detection method for PIND output signals is proposed in this paper, which is based on direct wavelet de-noising (DWD), cross-correlation analysis (CCA) and homo-filtering (HF), the method enhances the affectiv-ity of PIND test about the small particles. In the end, some practical PIND output signals are analysed, and the validity of this new method is proved.
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| 关 键 词： | 航空宇宙 继电器 细小微粒 微波 |
| 收稿时间： | 30 March 2006 |
| 修稿时间： | 2006-03-302006-08-14 |
Research on Auto-detection for Remainder Particles of Aerospace Relay Based on Wavelet Analysis |
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| GAO Hong-liang ZHANG Hui WANG Shu-juan.Research on Auto-detection for Remainder Particles of Aerospace Relay Based on Wavelet Analysis[J].Chinese Journal of Aeronautics,2007,20(1):75-80. |
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| Authors: | GAO Hong-liang ZHANG Hui WANG Shu-juan |
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| Institution: | Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Aerospace relay is one kind of electronic components which is used widely in national defense system and aerospace system. The existence of remainder particles induces the reliability declining, which has become a severe problem in the development of aerospace relay. Traditional particle impact noise detection (PIND) method for remainder detection is ineffective for small particles, due to its low precision and involvement of subjective factors. An auto-detection method for PIND output signals is proposed in this paper, which is based on direct wavelet de-noising (DWD), cross-correlation analysis (CCA) and homo-filtering (HF), the method enhances the affectivity of PIND test about the small particles. In the end, some practical PIND output signals are analysed, and the validity of this new method is proved. |
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| Keywords: | aerospace relay remainder particles PIND wavelet analysis Wavelet Analysis Based Aerospace Relay Particles validity new method practical test analysis based direct wavelet output signals paper precision involvement subjective factors small |
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