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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/20742

Title: Active secondary yaw control to improve curving behaviour of a railway vehicle
Authors: Alfi, Stefano
Prandi, Davide
Ward, Christopher P.
Bruni, Stefano
Goodall, Roger M.
Keywords: Active rail suspension
Secondary yaw control
LQG control
Issue Date: 2015
Publisher: © The Japan Society of Mechanical Engineers
Citation: ALFI, S. ...et al., 2015. Active secondary yaw control to improve curving behaviour of a railway vehicle. Presented at The International Symposium on Speed-up and Sustainable Technology for Railway and Maglev Systems (STECH 2015), Chiba, Japan, Nov 10-12th.
Abstract: Active primary / secondary suspensions have been proposed as a means to solve the trade-off between curving and stability which represents a key problem in the design of modern railway vehicles. In particular, one concept proposed for active control of the vehicle’s running behaviour is known as Secondary Yaw Control (SYC) and consists of applying a controllable yaw torque between the carbody and the two bogies. This concept has been studied in the past mainly to enhance the vehicle’s curving ability. This paper extends the idea by examining the implications of designing a bogie with soft yaw stiffness between the bogie frame and the wheelsets and using SYC to provide active stabilisation. To this aim, a state feedback control law is designed according to the LQR and LQG techniques. The paper presents the general concept of active suspension control investigated and the control strategies applied. Then the effectiveness of the proposed actuation concept is investigated by means of numerical simulations performed on mathematical models of the passive and actively controlled vehicles implemented in a fully nonlinear multi-body simulator. Comparisons are performed and benefits assessed between the actively controlled vehicle and the passive one in terms of: non-linear stability in straight track running; and safety and wear in curves.
Description: This is a conference paper.
Version: Accepted for publication
URI: https://dspace.lboro.ac.uk/2134/20742
Publisher Link: http://shinsen.biz/stech2015/
Appears in Collections:Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)

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