振動(dòng)載荷下面向電子設(shè)備PHM的板級(jí)封裝潛在故障分析方法
[Abstract]:Based on adaptive spectral kurtosis and kernel probability distance clustering, a potential fault feature extraction and pattern recognition method for plate level packaging under vibration load is proposed for electronic equipment fault prediction and health management (Prognostics and Health Management,PHM). Firstly, based on the principle of maximum spectral kurtosis, the strain response data of electronic components are filtered by empirical mode decomposition, and the envelope spectrum containing potential fault information is calculated and reconstructed to form fault symptom vector. Secondly, the nonlinear fault symptom data are mapped to the high dimensional Hilbert space by using the Gaussian radial basis function probability distance method, and the cluster analysis is carried out to form a class center that represents the healthy state of the board level package and each fault mode. Finally, based on the real-time monitoring of the envelope spectrum data of the board-level package, the probability distance from each center is calculated, and the state of the package fault mode is judged so as to realize the early identification of the package fault mode. Through experimental analysis, this method can effectively identify and predict the failure mode of board-level packaging, which provides a new way of thinking and means for realizing PHM of electronic equipment.
【作者單位】: 空軍工程大學(xué)航空航天工程學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(No.51201182) 陜西省自然科學(xué)基金(No.2015JM6345)
【分類號(hào)】:TN06
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