THE MULTIPLE-INPUT/SINGLE-OUTPUT FEEDFORWARD CONTROL OF LATERAL VIBRATION IN A HIGH-SPEED TRAIN CAR

Document type: Conference Papers
Peer reviewed: Yes
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Author(s): Sven Johansson, Lars Håkansson, Per Persson, Ingvar Claesson
Title: THE MULTIPLE-INPUT/SINGLE-OUTPUT FEEDFORWARD CONTROL OF LATERAL VIBRATION IN A HIGH-SPEED TRAIN CAR
Conference name: ICSV 9
Year: 2002
Pagination: P440 (CD)
Publisher: The International Institute of Acoustics and Vibration (IIAV)
City: Orlando, Florida, USA
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 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 carboy through non-rigid coupling of heavy underfloor equipment does not come with a weight penalty, but do 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 feedforward active control system, is likely to introduce a substantial reduction in the lateral vibration level. A simple controller structure is used and it is based on the multiple- input/single-output filtered-x LMS algorithm. 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, multiple-reference system, lms algorithm, train
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