Quantitative trend fault diagnosis of a rolling bearing based on Sparsogram and Lempel-Ziv

Aiming at the misdiagnosis caused by extracting the non-fault features using Lempel-Ziv algorithm, a quantitative trend fault diagnosis method of a rolling bearing based on Sparsogram and Lempel-Ziv is proposed in this paper. The approximate linear relationships between Lempel-Ziv and the fault sizes of inner and outer races are simulated with a theoretical model of rolling bearings. Then, the fault characteristic of experimental signal of...