Research on Auto-detection for Remainder Particles of Aerospace Relay Based on Wavelet Analysis

作     者：GAO Hong-liang ZHANG Hui WANG Shu-juan 

作者机构：Department of Electrical Engineering Harbin Institute of Technology Harbin 150001 China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2007年第20卷第1期

页      面：75-80页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Chinese Science Technology and Industry Foundation for National Defense(FEBG27100001) 

主　　题：aerospace relay remainder particles PIND wavelet analysis 

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 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.