Reassignment-enable reweighted sparse time-frequency analysis for sparsity-assisted aeroengine rub-impact fault diagnosis

Shibin Wang, Chuanyi Cheng,Jianghan Zhou,Fuhua Qin,Yining Feng,Baoqing Ding,Zhibin Zhao,Xuefeng Chen

Mechanical Systems and Signal Processing（2023）

引用 4|浏览54

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摘要

•A reassignment-enable reweighted sparse time–frequency method is proposed for the feature extraction of signals with fast-varying IF.•An acceleration strategy is proposed for FISTA to speed up the convergence for solving the Re2STF model.•The simulation study proves that Re2STF has the best TF performance among the considered methods.•The application in aeroengine vibration analysis verifies that Re2STF is effective for aeroengine rub-impact fault diagnosis.

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关键词

Spare time–frequency analysis,Reweighted strategy,Time–frequency reassignment,Aeroengine,Rub-impact fault diagnosis

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