| Citation: | WANG Zhaobin, FU Sai, SHANG Shang, et al. Storage degradation testing and life prediction for missile electromagnetic relay[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(12): 2610-2619. doi: 10.13700/j.bh.1001-5965.2015.0789(in Chinese)
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Missile electromagnetic relay (EMR) is one of the key electromechanical components used for signal transmission, load switching and circuit protection in defense weapon system. How to reliably evaluate the storage reliability of missile EMR has become the most important problem that is urgent to be solved. This study used missile EMR as research object. A new method for testing storage reliability is proposed by performance parameters degradation. The test and analysis system of missile EMR storage parameters was designed and developed. Based on the analysis of parameters changing in storage degradation testing, the modeling storage reliability method of missile EMR is extensively investigated. Prediction parameters preprocessing method is proposed which is based on time series analysis with wavelet transform method. And in this way, the prediction accuracy is increased. Parameters of the storage degradation model are estimated through the regression theory, and the storage life of missile EMR under normal stress is predicted.
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