Novel determination of Wheel-Rail adhesion stability for electric locomotives
- 203 Downloads
Monitoring the wheel-rail adhesion state and maintaining the stability are the key issues to ensure the safety of locomotives with increasing running speed nowadays. In this paper, a novel methodology is proposed to determine the wheel-rail adhesion stability. It is proved that when the adhesion state is in the unstable region, the transmitting factor which is defined as the ratio of the adhesion force in the wheel drive force is negative. Based on this principle, we propose a novel adhesion stability detector via measuring the wheel drive torque and the wheel rotational speed. It is free from measuring or determining the chassis speed, creep ratio, and optimal creep ratio, which are usually difficult to obtain in practical applications. In addition, the proposed methodology can evaluate the adhesion state dynamically regardless of the specific wheel-rail conditions. Numerical simulations are carried out to validate its effectiveness.
KeywordsAdhesion stability Creep ratio Electric locomotive Transmitting factor Wheel-rail contact
Unable to display preview. Download preview PDF.
- 1.Kawamura, A., Furuya, T., Takeuchi, K., Takaoka, Y., Yoshimoto, K., and Cao, M., “Maximum Adhesion Control for Shinkansen using the Tractive Force Tester,” Proc. of IEEE 28th Annual Conference of the Industrial Electronics Society, Vol. 1, pp. 567–572, 2002.Google Scholar
- 8.Shirai, S., “Adhesion Phenomena at High-Speed Range and Performance of an Improved Slip-Dectector,” Quarterly Reports, Railway Technical Research Institute, Vol. 18, No. 4, pp. 189–190, 1977.Google Scholar
- 10.Baek, K. S., Kyogoku, K., and Nakahara, T., “Influence of Parameters on the Transient Traction of Wheel/Rail Contact under Low-Speed and Wet Conditions,” Journal of Japanese Society of Tribologists, Vol. 52, No. 5, pp. 359–366, 2007.Google Scholar
- 12.Ryoo, H. J., Kim, S. J., Rim, G. H., Kim, Y. J., and Kim, M. S., “Novel Anti-Slip/Slide Control Algorithm for Korean High-Speed Train,” Proc. of the 29th Annual Conference on Industrial Electronics Society, Vol. 3, pp. 2570–2574, 2003.Google Scholar
- 13.Park, D. Y., Kim, M. S., Hwang, D. H., Lee, J. H., and Kim, Y. J., “Hybrid Re-Adhesion Control Method for Traction System of High-Speed Railway,” Proc. of the Fifth International Conference on Electrical Machines and Systems, Vol. 2, pp. 739–742, 2001.Google Scholar
- 14.Takaoka, Y. and Kawamura, A., “Disturbance Observer based Adhesion Control for Shinkansen,” Proc. of 6th International Workshop on Advanced Motion Control, pp. 169–174, 2000.Google Scholar
- 15.Kawamura, A., Takeuchi, K., Furuya, T., Takaoka, Y., Yoshimoto, K., and Cao, M., “Measurement of the Tractive Force and the New Adhesion Control by the Newly Developed Tractive Force Measurement Equipment,” Proc. of the Power Conversion Conference, Vol. 2, pp. 879–884, 2002.Google Scholar
- 21.Mason, S. J., “Feedback Theory — Some Properties of Signal Flow Graphs,” Proceedings of the Institute of Radio Engineers, Vol. 41, No. 9, pp. 1144–1156, 1953.Google Scholar
- 22.Ogata, K., “Modern Control Engineering,” Prentice Hall, 5th Ed., pp. 751–777, 2009.Google Scholar