Diesel Engine Fault Diagnosis Based on Polar Coordinate Enhancement of Time-Frequency Diagram

被引：0
|
作者：
Shen H. [1 ]
Zeng R. [1 ]
Yang W. [1 ]
Zhou B. [1 ]
Ma W. [1 ]
Zhang L. [1 ]
机构：
[1] Projecton Equipment Surport Department, Army Military Transportation University, Tianjin
来源：
Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | 2018年 / 38卷 / 01期
关键词：
Feature enhancement; Feature extraction; Spolar coordinate; Time frequency diagram;
D O I：
10.16450/j.cnki.issn.1004-6801.2018.01.004
中图分类号：
学科分类号：
摘要：
The mechanical faults at different parts of a diesel engine are characterized by confusion and non-stationary cycling. A fault diagnose method based on polar coordinate enhancement of time-frequency diagram is proposed. The Gabor transform is applied to achieve the time-frequency feature of the vibration signals; then, the time-frequency features are re-sampled at constant angular interval and transformed to the polar coordinate as enhanced feature of certain areas. Thus, the periodic transient features are enhanced. Polar diagram areas energy of 6 rotation cycle of different diesel engine status is extracted as the fault feature, which is used to train support vector machine (SVM) for the pattern recognition. Experimental result shows that this method highlights the features of five typical engine faults, extracts the fault feature information, and distinguishes different types of wear fault. © 2018, Editorial Department of JVMD. All right reserved.
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页码：27 / 33
页数：6
相关论文
共 10 条
  • [1] Li Z., Guo L., Piao H., Et al., Piston slap characteristics and clearance variation of piston and cylinder, Journal of Vibration, Measurement & Diagnosis, 34, 5, pp. 838-843, (2014)
  • [2] Shen H., Zhao H., Mei J., Et al., Feature extraction of connecting rod bearing fault of diesel engine based on angle area fourth-order cumulant slice spectrum, Journal of Vibration and Shock, 33, 11, pp. 90-94, (2014)
  • [3] Li Z., Chen X., Liu Z., Study of diagnosis methods for Diesel's valve tain faults based on picture-processing and neural network, Transactions of Csice, 19, 3, pp. 241-244, (2001)
  • [4] Sun Y., Piao J., Zhang Y., Research on fault diagnosis for internal combustion engines using transient rotate speed and bispectrum, Transactions of Csice, 22, 3, pp. 241-244, (2004)
  • [5] Climente-Alarco V., Antonino-Daviu J.A., Riera-Guasp M., Et al., Application of the Wigner-Ville distribution for the detection of rotor asymmetries and eccentricity through high-order harmonics, Electric Power Systems Research, 91, pp. 28-36, (2012)
  • [6] Cai Q., Huang Y., Study on autoregressive trispectrum slices, Chinese Journal of Scientific Instrument, 30, 2, pp. 345-350, (2009)
  • [7] Xiao Y., Cao Y., Analysis of engine's vibration signals acquired during it's acceleration using theory of cyclostationary spectrum, Journal of Vibration, Measurement & Diagnosis, 28, 2, pp. 117-121, (2008)
  • [8] Chen F., Huang L., Han Y., Et al., Fault diagnosis method of information exergy based on space-time feature spectrum in frequency domain, Journal of Vibration, Measurement & Diagnosis, 34, 5, pp. 898-904, (2014)
  • [9] Zhu Z., Wu X., Li D., Et al., Synchronous enhancement of periodic transient feature based on polar diagram for bearing fault diagnosis, Journal of Vibration Engineering, 21, 6, pp. 635-638, (2008)
  • [10] Jia J., Zhang L., Zeng R., Et al., Polar diagram angle-frequency representation and diagnosis for gear wear fault of gearbox, Transactions of the Chinese Society of Agricultural Engineering, 28, 22, pp. 58-62, (2012)
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