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Feedback-LMS control of lateral vibration in a train car
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2001 (English)Conference paper (Refereed) Published
Abstract [en]

The problem of low-frequency lateral train-car vibration is an important issue surrounding the design of high-speed trains. Passive solutions such as stiffening the car chassis are impractical because of the weight increase. Semi-passive solutions, such as modifying the structural dynamics of the carbody through non-rigid coupling of heavy underfloor equipment does not incur a weight penalty, but does not sufficiently reduce the vibrations. However, computer simulations based on signals derived from a dynamic computer model of a train car indicates that the incorporation of a multiple-reference feedforward active control system, in addition to the semi-passive approach, is likely to effect a substantial reduction in the lateral vibration level. The complexity of the control system may be reduced by using a robust feedback-LMS controller. Results from computer simulations indicate that a feedback system would function as well as, and potentially better than, a feedforward system. The control results illustrate attenuation of the lateral train-car vibration of up to 15 dB.

Place, publisher, year, edition, pages
Hong-Kong: ICSV , 2001.
Keyword [en]
Active control, vibration, train
National Category
Signal Processing
URN: urn:nbn:se:bth-10299Local ID: diva2:838391
International Conference on Sound and Vibration
Available from: 2012-09-18 Created: 2002-02-04 Last updated: 2015-06-30Bibliographically approved

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Johansson, SvenHåkansson, LarsClaesson, Ingvar
Signal Processing

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