전동차 운행 중 횡댐퍼 작용력 분포

초록

To develop a technology to diagnose the fault of dampers applied to railway vehicles and to set criteria, test runswere performed to measure damping force and displacement acting on a lateral damper during vehicle operation. Normal damper and fault damper were installed on a test train. Damper force and velocity of the lateral damperduring test running were measured. Distributions of damper force and velocity representing the state of the damperhad the same distribution in repeated tests. Distribution of the damper force and velocity was consistently uniformregardless of the train driving direction. Thus, the effect of train driving direction on damper force and velocitydistribution was insignificant. The fault of the damper appeared to have a direct effect on the distribution of thedamper force, suggesting that the fault of the damper could be sufficiently diagnosed just by monitoring the force ofthe damper. Especially, when comparing the velocity-force distribution, the fault damper showed a clear differencefrom a normal damper. Results of this paper could be used for developing a technology for diagnosing damper faultfor railway vehicles in the future.

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