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

机译：基于小波分析的航天继电器剩余颗粒自动检测研究。

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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.
机译：航空继电器是一种广泛用于国防系统和航空系统的电子元件。剩余颗粒的存在导致可靠性下降，这已成为航空继电器发展中的严重问题。传统的撞击检测噪声检测（PIND）方法对小颗粒的检测效果不佳，原因是它的精度较低且受主观因素的影响。提出了一种基于直接小波去噪（DWD），互相关分析（CCA）和均值滤波（HF）的PIND输出信号自动检测方法，从而提高了信号的影响度。关于小颗粒的PIND测试。最后，分析了一些实际的PIND输出信号，并证明了该方法的有效性。

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