Journal Article

Composite Interpolation-Based Multiscale Fuzzy Entropy and Its Application to Fault Diagnosis of Rolling Bearing

Pan, Haiyang, Bao, Jiahan, Zheng, Jinde, Liu, Qingyun, Tong, Jinyu

2019

Overview

Multiscale fuzzy entropy (MFE), as an enhanced multiscale sample entropy (MSE) method, is an effective nonlinear method for measuring the complexity of time series. In this paper, an improved MFE algorithm termed composite interpolation-based multiscale fuzzy entropy (CIMFE) is proposed by using cubic spline interpolation of the time series over different scales to overcome the drawbacks of the coarse-grained MFE process. The proposed CIMFE method is compared with MSE and MFE by analyzing simulation signals and the result indicates that CIMFE is more robust than MSE and MFE in analyzing short time series. Taking this into account, a new fault diagnosis method for rolling bearing is presented by combining CIMFE for feature extraction with Laplacian support vector machine for fault feature classification. Finally, the proposed fault diagnosis method is applied to the experiment data of rolling bearing by comparing with the MSE, MFE and other existing methods, and the recognition rate of the proposed method is 98.71%, 98.71%, 98.71%, 98.71% and 100% under different training samples (5, 10, 15, 20 and 25), which is higher than that of the existing methods.

• Publisher: MDPI AG,MDPI
• Subject: Algorithms / Bearings / composite interpolation multiscale fuzzy entropy / Entropy / Fault diagnosis / Feature extraction / Fractals / Interpolation / Laplacian support vector machines / Measurement methods / multiscale entropy / multiscale fuzzy entropy / Mutation / Roller bearings / Support vector machines / Time series