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Modal state control in the frequency domain for active damping of mechanical vibrations in traction drive-trains

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1 Author(s)
Fleischer, M. ; Dept. of Electr. Drives, Erlangen-Nuremberg Univ., Erlangen, Germany

Modern high-performance locomotives suffer from self-excited vibrations in the traction drive-train due to wheel-rail contact. To suppress these oscillations the motor torque has to be reduced, which decreases the traction force. To avoid this loss of traction force, a universal modal state control concept with feed-forward control is proposed for active damping. It is based on a reduced modal three-inertia model which is identified from an arbitrarily branched multi-inertia traction drive-train. The state control is also designed to be adaptive to wheelset wear. Due to computation time limitations an effort-minimized equivalent modal state control concept is proposed in the frequency domain. Therefore a new design method will be introduced. Finally the proposed modal state control is discussed and compared with a conventional concept by simulation results.

Published in:

Advanced Motion Control, 2004. AMC '04. The 8th IEEE International Workshop on

Date of Conference:

25-28 March 2004