H∞ Control of Railway Vehicle Suspension with MR damper by Using Scaled Roller Rig

초록

In this paper, an MR damper was applied to the secondary suspension to reduce vibration of carbody. The control performance of MR damper was verified by numerical analysis with a 1/5 scaled railway vehicle model in accordance with the similarity law. The analysis results were then validated by test. In particular, the objective of the study is to understand how the control performance affected the dynamic characteristics of a railway vehicle and to analyze systematically the relationship between control performance and dynamic characteristics depending on various running speeds. To achieve this, experimental results for the dynamic characteristics of scaled MR damper designed for the 1/5 scale railway vehicle model were applied to the railway vehicle model. The H∞ control method was applied to the controller. The means of designing the railway vehicle body vibration controller and the effectiveness of its results were studied.

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