In order to meet the riding comfort requirements of high-speed trains when running between high-speed lines and the existing low-speed lines, it is necessary to develop active damper system to further suppress vehicle vibration. A semi-active lateral damper system with H∞ control is developed. The performance of that system is tested on roller rig under different track irregularities. The experimental results show that the semi-active lateral damper based on H∞ control can effectively suppress the lateral vibration of the car body, especially the low frequency vibration of 0.5 ~ 3 Hz.
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Cao et al. (2022) studied this question.