Vibration fault detection of vehicle transmission gearbox based on time-frequency analysis of non-stationary signals Online publication date: Wed, 04-Jan-2023
by Zhongli Shen; Qiyue Xie; Fei Jiang; Yi Huang
International Journal of Vehicle Design (IJVD), Vol. 89, No. 1/2, 2022
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.
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