Title: Vibration fault detection of vehicle transmission gearbox based on time-frequency analysis of non-stationary signals

Authors: Zhongli Shen; Qiyue Xie; Fei Jiang; Yi Huang

Addresses: School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha, Hunan, 410022, China ' School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha, Hunan, 410022, China ' School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha, Hunan, 410022, China ' School of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha, Hunan, 410022, China

Abstract: The traditional vibration fault detection method of vehicle transmission gearbox cannot realise feature extraction of non-stationary fault signal, which leads to large error of detection result and low fault detection rate. Therefore, this paper proposes a new method of vehicle transmission gearbox vibration fault detection based on non-stationary signal time-frequency analysis. The components of transmission gearbox are analysed, and the transmission path of vibration fault signal of transmission gearbox is obtained according to its structural characteristics. The time-frequency characteristics of non-stationary signals are extracted by empirical mode method to complete the vibration fault detection of vehicle transmission gearbox. Experimental results show that the proposed method has high detection accuracy and high detection rate under the premise of amplitude and phase modulation of fault signal.

Keywords: vehicle transmission gearbox; vibration fault; non-stationary signal; time-frequency analysis; optimal observation signal.

DOI: 10.1504/IJVD.2022.128028

International Journal of Vehicle Design, 2022 Vol.89 No.1/2, pp.145 - 159

Received: 27 Apr 2021
Accepted: 07 Jan 2022
Published online: 04 Jan 2023 *

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