A joint particle filter and expectation maximization approach to machine condition prognosis

Jinjiang Wang, Robert X. Gao (), Zhuang Yuan, Zhaoyan Fan and Laibin Zhang
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Jinjiang Wang: China University of Petroleum
Robert X. Gao: Case Western Reserve University
Zhuang Yuan: China University of Petroleum
Zhaoyan Fan: Oregon State University
Laibin Zhang: China University of Petroleum

Journal of Intelligent Manufacturing, 2019, vol. 30, issue 2, No 9, 605-621

Abstract: Abstract This paper presents a probabilistic model based approach for machinery condition prognosis based on particle filter by integrating physical knowledge with in-process measurements into a state space framework to account for uncertainty and nonlinearity in machinery degradation process. One limitation of conventional particle filter is that condition prognosis is performed based on the model with predetermined parameters obtained from simulation studies or lab-controlled tests. Due to the stochastic nature of machinery defect propagation under varying operating conditions, model parameters may vary in practice which causes prediction errors. To address it, an integrated state prediction and parameter estimation framework based on particle filter and expectation-maximization algorithm is formulated and investigated. The model parameters are adaptively estimated based on expectation-maximization algorithm utilizing hidden degradation state and available in-process measurements. Particle filter is then performed on the identified model with estimated parameters following Bayesian inference scheme to improve the robustness and accuracy of machinery condition prognosis. The effectiveness of the developed method is demonstrated through a simulation study and an experimental run-to-failure bearing test in a wind turbine.

Keywords: Machinery condition prognosis; Particle filter; Parameter estimation; Expectation-maximization (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (4)

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DOI: 10.1007/s10845-016-1268-0

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