Active Control Methods for Reducing Lateral Vibrations in High-Speed Trains

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Sven Johansson, Lars Håkansson, Per Persson, Ingvar Claesson
Title: Active Control Methods for Reducing Lateral Vibrations in High-Speed Trains
Conference name: GRACM 2002
Year: 2002
Pagination: No 192 (CD)
Publisher: Greek Association of Computational Mechanics (GRACM)
City: Patras, Greece
Organization: Blekinge Institute of Technology
Department: Department of Telecommunications and Signal Processing (Institutionen för telekommunikation och signalbehandling)
Department of Telecommunications and Signal Processing S-372 25 Ronneby
+46 455 38 50 00
Authors e-mail: sven.johansson@bth.se
Language: English
Abstract: The problem of low-frequency lateral train-car vibration is an important issue surrounding the design of high-speed trains. Passive vibration control solutions such as stiffening the car chassis are impractical because of the weight increase, and modifying the structural dynamics of the carboy through nonrigid coupling of heavy underfloor equipment does not come with a weight penalty, but do not sufficiently reduce the vibrations. This paper addresses two simple active vibration control systems for reducing lateral vibrations: one feedforward system and one feedback. Computer simulations based on signals derived from a
dynamic computer model of a train car indicates that the incorporation of an active control system, in addition to the passive approach, is likely to introduce an improved attenuation of the low-frequency lateral vibrations. Active control results illustrate an attenuation of the lateral train-car vibration by up to 14 dB.
Subject: Signal Processing\Active Noise and Vibration Control
Keywords: active vibration control, feedforward control, feedback control, lms algorithm, train
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