WANG Tao, SHI Yongjin, LI Jiwei, et al. Application of optimized VMD in fault diagnosis of motor bearings of high-speed train. [J]. Electric drive for locomotives (4):180-186(2022)
DOI:
WANG Tao, SHI Yongjin, LI Jiwei, et al. Application of optimized VMD in fault diagnosis of motor bearings of high-speed train. [J]. Electric drive for locomotives (4):180-186(2022) DOI: 10.13890/j.issn.1000-128X.2022.04.026.
Application of optimized VMD in fault diagnosis of motor bearings of high-speed train
Aiming at the difficulty in extracting early faults of high-speed train motor bearings under the background of strong noise
an optimized VMD algorithm was proposed. Firstly
the vibration signal spectrum trend was obtained according to the spectrum trend estimation algorithm
thereby the resonance frequency band and the number of decomposition layers were determined; then
according to the boundary and bandwidth of each frequency band
the initial matrix of the penalty factor was obtained according to the value formula; finally the known parameters were substituted into the VMD algorithm to realize the decomposition of the signals. Verification by simulation signals and experimental signals shows that the method can more accurately identify the resonance frequency band under the condition of low signal-to-noise ratio
and accurately decompose the signal
which improves the accuracy and adaptability of the VMD algorithm.
ZHU Wenlong, YANG Jiawei, GUAN Zhaoyi, et al. Overview of traction motor bearing fault diagnosis technology[J]. Control and Information Technology, 2021(5): 12-19.
CUI Lingli, WANG Jing, WU Na, et al. Bearing fault diagnosis based on self-adaptive impulse dictionary matching pursuit[J]. Journal of Vibration and Shock, 2014, 33(11): 54-60.
ZHAN Jun, CHENG Longsheng, PENG Zhaiming. Intelligent fault diagnosis of rolling bearings based on the VMD and improved multi-classification Mahalanobis Taguchi system[J]. Journal of Vibration and Shock, 2020, 39(2): 32-39.
ZHOU Fucheng, TANG Guiji, HE Yuling. Unbalanced fault feature extraction for wind power gearbox based on improved VMD[J]. Journal of Vibration and Shock, 2020, 39(5): 170-176.
TANG Guiji, WANG Xiaolong. Parameter optimized variational mode decomposition method with application to incipient fault diagnosis of rolling bearing[J]. Journal of Xi'an Jiaotong University, 2015, 49(5): 73-81.
ZHENG Xiaoxia, CHEN Guangning, REN Haohan, et al. Fault detection of vulnerable units of wind turbine based on improved VMD and DBN[J]. Journal of Vibration and Shock, 2019, 38(8): 153-160.
MA Hongbin, TONG Qingbin, ZHANG Yanan. Applications of optimization parameters VMD to fault diagnosis of rolling bearings[J]. China Mechanical Engineering, 2018, 29(4): 390-397.
ZHANG Chao, ZHU Tengfei, WANG Dayong. Fault diagnosis method of gear based on VMD energy entropy and LS-SVM[J]. Machine Design & Research, 2018, 34(2): 81-84.
LI Changqing, LIN Jianhui, HU Yongxu. Application of optimization parameters VMD and MED in fault diagnosis of train gearbox rolling bearings[J]. Electric Drive for Locomotives, 2020(3): 142-147.
LI Hua, WU Xing, LIU Tao, et al. Bearing fault feature extraction based on VMD optimized with information entropy[J]. Journal of Vibration and Shock, 2018, 37(23): 219-225.
WANG Changming, ZHANG Zheng, LI Feng, et al. A new method and its application for fault diagnosis of gearboxes based on improved empirical wavelet transform[J]. Noise and Vibration Control, 2018, 38(5): 167-172.
HUANG Y, LIN J H, LIU Z C, et al. A modified scale-space guiding variational mode decomposition for high-speed railway bearing fault diagnosis[J]. Journal of Sound and Vibration, 2019, 444: 216-234.
LI J M, YAO X F, WANG H, et al. Periodic impulses extraction based on improved adaptive VMD and sparse code shrinkage denoising and its application in rotating machinery fault diagnosis[J]. Mechanical Systems and Signal Processing, 2019, 126: 568-589.
LIU Zechao, LIN Jianhui, DING Jianming, et al. Application of variable step frequency weighted energy operator in bearing fault diagnosis[J]. Journal of Vibration and Shock, 2019, 38(7): 86-92.