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Journal of Vibration and Control
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Stabilization Control of Hunting Motion of Railway Vehicle Wheelset Using Gyroscopic Damper

Hiroshi Yabuno

Institute of Engineering Mechanics and Systems, University of Tsukuba, Tsukuba 305-8573, Japan, yabuno{at}esys.tsukuba.ac.jp

Hirokazu Takano

Doctoral Program in Systems and Information Engineering, University of Tsukuba, Tsukuba 305-8573, Japan

Hirokazu Okamoto

Doctoral Program in Systems and Information Engineering, University of Tsukuba, Tsukuba 305-8573, Japan

A railway wheelset experiences the problem of hunting motion above a critical speed, which is known as a flutter-type self-excited oscillation owing to a nonconservative contact force. In this study, a stabilization control method is proposed for the hunting motion in a simple wheelset model, i.e. a fundamental two-degrees-of-freedom model with respect to the lateral and yawing motions of the wheelset. Using the theory of linear eigenvalue analysis it is shown that a gyroscopic damper is effective in increasing critical speed for the hunting motion. Experiments were conducted using a simple apparatus with a roller rig, and results show the validity of the gyroscopic damper for the stabilization of hunting motion.

Key Words: Hunting motion • gyroscopic damper • vehicle wheelset • self-excited oscillation • stabilization control

Journal of Vibration and Control, Vol. 14, No. 1-2, 209-230 (2008)
DOI: 10.1177/1077546307080020
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