The Adaptive Short-Time Fourier Transform Method Based on Fast Path Optimization and Its Application for Fault Diagnosis of Planetary Gearbox

被引：0

作者：

Bao W. ^{[1
]}

Tu X. ^{[1
]}

Li F. ^{[1
]}

Dai L. ^{[2
]}

Shen Y. ^{[2
]}

Liu Z. ^{[1
]}

Wang X. ^{[1
]}

机构：

[1] The State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai

[2] Shanghai Aerospace Control Technology Institute, Shanghai

来源：

Li, Fucai (fcli@sjtu.edu.cn) | 1600年 / Nanjing University of Aeronautics an Astronautics卷 / 40期

关键词：

Adaptive short-time Fourier transform (ASTFT); Fast path optimization (FPO); Fault diagnosis; Order analysis; Time-frequency analysis;

D O I：

10.16450/j.cnki.issn.1004-6801.2020.02.009

中图分类号：

TH13 [机械零件及传动装置];

学科分类号：

080203 ;

摘要：

This paper proposes an adaptive short-time Fourier transform (ASTFT) method based on fast path optimization (FPO). The proposed method is applied to the fault diagnosis of planetary gearbox. This method can estimate the instantaneous frequency from the time-frequency distribution. Thus, the time window size can be adaptively adjusted by considering the instantaneous frequency. According to the characteristics of the planetary box, this method can be used to effectively extract the speed information and resample the fault signal in angle domain from which we can get the fault orders of the planetary gearbox. The vibration analysis of a gearbox demonstrates its effectiveness for fault diagnosis.The performance of the proposed method in this research work is validated by both the simulated and experimental signals including a vibration signal. Compared with the STFT, the proposed method demonstrates its superb accuracy and perfection in characterizing the time-varying time-frequency features of the signal. © 2020, Editorial Department of JVMD. All right reserved.

引用

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页码：272 / 277

页数：5

共 17 条

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