Commenced in January 2007
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Analysis of Cascade Control Structure in Train Dynamic Braking System

Authors: B. Moaveni, S. Morovati

Abstract:

In recent years, increasing the usage of railway transportations especially in developing countries caused more attention to control systems railway vehicles. Consequently, designing and implementing the modern control systems to improve the operating performance of trains and locomotives become one of the main concerns of researches. Dynamic braking systems is an important safety system which controls the amount of braking torque generated by traction motors, to keep the adhesion coefficient between the wheel-sets and rail road in optimum bound. Adhesion force has an important role to control the braking distance and prevent the wheels from slipping during the braking process. Cascade control structure is one of the best control methods for the wide range of industrial plants in the presence of disturbances and errors. This paper presents cascade control structure based on two forward simple controllers with two feedback loops to control the slip ratio and braking torque. In this structure, the inner loop controls the angular velocity and the outer loop control the longitudinal velocity of the locomotive that its dynamic is slower than the dynamic of angular velocity. This control structure by controlling the torque of DC traction motors, tries to track the desired velocity profile to access the predefined braking distance and to control the slip ratio. Simulation results are employed to show the effectiveness of the introduced methodology in dynamic braking system.

Keywords: Cascade control, dynamic braking system, DC traction motors, slip control.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1124379

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References:


[1] S. Nasiri, B. Movaeni, G. Payagneh, M. Arefian, “Modeling and analysis of the hydraulic antilock brake system of vehicle “, Journal of Control, Vol 6, No.3, 2012.
[2] H. Ahmad, “Dynamic braking control for accurate train braking distance estimation under different operating conditions”, Partial fulfillment of the requirements for the degree of doctor of philosophy in mechanical engineering, Virginia Polytechnic Institute and State University, 2013.
[3] L. Liud Vinavičius, G. Bareika, “Theoretical and practical perspectives of diesel locomotive with DC traction motors wheel-set’s slipping and sliding control”, 2011.
[4] K. Lu, Y. Song, W. Cai, “Robust adaptive re-adhesion control for high speed trains”, IEEE 17th International Conference on Intelligent Transportation System”, 2014.
[5] P. Pichlík, J. Zděnek, “Overview of slip control methods used in locomotives”, Transaction on Electrical Engineering, Vol.3, No.2, 2014.
[6] S. Hwan Prak, J. Shik Kim, J. Juchol, H. Yamazaki, “Modeling and control of adhesion force in railway rolling stocks”, IEEE Control System Magazin, 2008.
[7] H. Yamazaki, Y. Karino, T. Kamada, M. Nagai, T. Kimura, “Effect of wheel-slip prevention based on sliding mode control theory for railway vehicles”, Vehicle System Dynamics, Vol. 46, No. 4, April 2008.
[8] I. Kaya, D. P. Atherton, “Improved cascade control structure for controlling unstable and integrating processes”, Proceeding of the 44th IEEE Conference on Decision and Control, the European Control Conference 2005 Seville, Spain, 2015.
[9] P. C. Sen, “Principles of electric machines and power electronics”, PP. 135-220, 1989.
[10] A. E. Fitzgerald, C. Kingsley, Jr., S. D. Umans, "Electric machinery", 6 Edition, 2003.