Assessment of rolling element bearing fault severity using multi-scale entropy

作者：Zhang Long^*; Huang Wen Yi; Xiong Guo Liang

来源：Journal of Vibration and Shock, 2014, 33(9): 185-189.

DOI：10.13465/j.cnki.jvs.2014.09.034

• Condition based maintenance
• Fault development
• Fault severities
• Multi-scale entropies
• Non-stationarities
• Quantitative identification
• Rolling Element Bearing
• Vibration signal

Quantitative identification of bearing fault severity is the basis of condition-based maintenance. The vibration signals exhibits nonstationarity and nonlinearity in the presence of bearing faults. On the basis of the multi-scale entropy, a new index quantitatively describing bearing fault severity was constructed taking the mean value and the variations of the entropies over multiple scales into account. The new index was called partial mean of multi-scale entropy (PMME). Simulation and experimental results showed that the new index is able to detect incipient bearing fault and trace the fault development well.

• 出版日期2014