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Frontiers of Mechanical Engineering

Front. Mech. Eng.    2018, Vol. 13 Issue (2) : 301-310
An adaptive data-driven method for accurate prediction of remaining useful life of rolling bearings
Yanfeng PENG1,2,3, Junsheng CHENG1,2(), Yanfei LIU3, Xuejun LI3, Zhihua PENG4
1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China
2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China
3. Hunan Provincial Key Laboratory of Health Maintenance for Mecha- nical Equipment, Hunan University of Science and Technology, Xiangtan 411201, China
4. School of Mathematics and Physics, University of South China, Hengyang 421001, China
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A novel data-driven method based on Gaussian mixture model (GMM) and distance evaluation technique (DET) is proposed to predict the remaining useful life (RUL) of rolling bearings. The data sets are clustered by GMM to divide all data sets into several health states adaptively and reasonably. The number of clusters is determined by the minimum description length principle. Thus, either the health state of the data sets or the number of the states is obtained automatically. Meanwhile, the abnormal data sets can be recognized during the clustering process and removed from the training data sets. After obtaining the health states, appropriate features are selected by DET for increasing the classification and prediction accuracy. In the prediction process, each vibration signal is decomposed into several components by empirical mode decomposition. Some common statistical parameters of the components are calculated first and then the features are clustered using GMM to divide the data sets into several health states and remove the abnormal data sets. Thereafter, appropriate statistical parameters of the generated components are selected using DET. Finally, least squares support vector machine is utilized to predict the RUL of rolling bearings. Experimental results indicate that the proposed method reliably predicts the RUL of rolling bearings.

Keywords Gaussian mixture model      distance evaluation technique      health state      remaining useful life      rolling bearing     
Corresponding Authors: Junsheng CHENG   
Just Accepted Date: 07 June 2017   Online First Date: 07 July 2017    Issue Date: 19 March 2018
 Cite this article:   
Yanfeng PENG,Junsheng CHENG,Yanfei LIU, et al. An adaptive data-driven method for accurate prediction of remaining useful life of rolling bearings[J]. Front. Mech. Eng., 2018, 13(2): 301-310.
Fig.1  Illustration of GMM
Fig.2  Flowchart of the proposed method
Fig.3  Bearing test rig
Fig.4  Vibration signals of three data sets. (a) Data set 1; (b) data set 2; (c) data set 3
Data setTestBearingBreak time/minDegradation typeMaximum magnitude/(m·s–2)
11321560Inner race5
3219840Outer race5
Tab.1  Information of the experimental data sets
Fig.5  Clustering results of data set 1. (a) Clustered health state; (b) skewness
Fig.6  Clustering results of data set 2. (a) Clustered health state; (b) skewness
Fig.7  Clustering results of data set 3. (a) Clustered health state; (b) skewness
Fig.8  Salient features of data set 1
Fig.9  Salient features of data set 2
Fig.10  Salient features of data set 3
Fig.11  RUL prediction results of data set 1. (a) Method 1; (b) Method 2; (c) Method 3; (d) Method 4
Fig.12  RUL prediction results of data set 2. (a) Method 1; (b) Method 2; (c) Method 3; (d) Method 4
Fig.13  RUL prediction results of data set 3. (a) Method 1; (b) Method 2; (c) Method 3; (d) Method 4
20.89120.6750 0.16740.57800.05170.8970
Tab.2  Experimental results of data set 1
Tab.3  Experimental results of data set 2
Tab.4  Experimental results of data set 3
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