1547. Bearing remaining life prediction using Gaussian process regression with composite kernel functions
Sheng Hong1, Zheng Zhou2, Chen Lu3, Baoqing Wang4, Tingdi Zhao5
1, 3, 4, 5Science and Technology on
Reliability and Environmental Engineering Laboratory,
2Systems Engineering Research Institute, China State Shipbuilding Corporation (CSSC), Beijing, China
1, 3Corresponding authors
E-mail: firstname.lastname@example.org, email@example.com
(Received 20 March 2014; received in revised form 30 January 2015; accepted 20 February 2015)
Abstract. There is an urgent demand for life prediction of bearing in industry. Effective bearing degradation assessment technique is beneficial to condition based maintenance (CBM). In this paper, Gaussian Process Regression (GPR) is used for remaining bearing life prediction. Three main steps of prediction schedule are presented in details. RMS, Kurtosis and Crest factor are used for feature fusion by self-organizing map (SOM). Minimum Quantization Error (MQE) value derived from SOM is applied to represent the condition of bearing. GPR models with both single and composite covariance functions are presented. After training, new MQE value can be predicted by the GPR model according to previous data points. Experimental results show that composite kernels improve the accuracy and reduce the variance of prediction results. Compared with particle filter (PF), GPR model can predict the remaining life of bearings more accurately.
Keywords: Gaussian process regression, uncertainty distribution, bearing life prediction.
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Cite this article
Hong Sheng, Zhou Zheng, Lu Chen, Wang Baoqing, Zhao Tingdi Bearing remaining life prediction using Gaussian process regression with composite kernel functions. Journal of Vibroengineering, Vol. 17, Issue 2, 2015, p. 695‑704.
© JVE International Ltd. Journal of Vibroengineering. Mar 2015, Volume 17, Issue 2. ISSN 1392-8716