Feedback-LMS control of lateral vibration in a train car
| Document type: | Conference Papers |
|---|---|
| Peer reviewed: | Yes |
| Full text: | |
| Author(s): | Per Persson, Sven Johansson, Lars Håkansson, Ingvar Claesson, Timothy Samuels |
| Title: | Feedback-LMS control of lateral vibration in a train car |
| Conference name: | International Conference on Sound and Vibration |
| Year: | 2001 |
| Publisher: | ICSV |
| City: | Hong-Kong |
| 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: | per.persson@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 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. |
| Subject: | Signal Processing\Active Noise and Vibration Control |
| Keywords: | Active control, vibration, train |
