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Acta Armamentarii ›› 2019, Vol. 40 ›› Issue (2): 326-333.doi: 10.3969/j.issn.1000-1093.2019.02.012

• Paper • Previous Articles     Next Articles

A Real-time Reliability Prediction Approach for Analog Circuits Based on Noise-assisted Technique and On-site Data Update

YAN Liyue, WANG Houjun, LIU Zhen   

  1. (School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China)
  • Received:2018-03-13 Revised:2018-03-13 Online:2019-04-08

Abstract: Signal processing and information fusion technologies are the key to real-time reliability prediction. The traditional real-time reliability analysis methods are based on specific random process and pro- bability distribution. A new real-time reliability prediction method is proposed. The proposed method uses a Kalman filter-based noise-assisted technique to calculate the fault indicators that characterize system performance degradation trend. On this basis, the particle filter technology is used to extrapolate the pseudo-failure performance of circuit system, and then the Bayesian inference as an information fusion method is introduced to update the time-varying parameters of performance distribution, thus predicting the real-time reliability of the circuit. The failure physical model of an embedded planar capacitor based on the real acceleration degradation experiment is introduced, and the effectiveness of this real-time prediction method combined with noise-assisted technology and on-site data is verified by using real data instead of ideal simulation hypothetical data. The result shows that the more the on-site data information is, the higher the prediction accuracy of circuit reliability is.Key

Key words: analogcircuit, realtimeprediction, noise-assistedtechnique, on-sitedata, particlefilter, informationfusion

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