关键词: 高速双层动车组, 车端侧滚减振装置, 横向平稳性, 参数优化

Abstract: Double deck EMUs were equipped with amplifiers for secondary lateral damping to mitigate the vibrations caused by primary hunting behaviour. However, increased secondary lateral damping could negatively impact the lateral ride quality of the vehicles. In order to solve the problem of poor lateral ride quality in high-speed double deck EMUs, a mathematical model of the inter-car rolling damping devices was created by taking into account the working principle of the damper as well as the rolling and yaw state of the carbody, and the simulation models of the damper established in AMEsim software were verified with the bench tests. Finally, the key parameters of the inter-car rolling damping devices were optimized by establishing a co-simulation model between the inter-car rolling damping device and the vehicle model, without changing the existing suspension parameters of the vehicles. The simulation results show that the device may effectively improve the lateral ride quality of the double deck EMUs without affecting the vertical ride quality of the vehicles and ensure the safety of curve operations.

Key words: high-speed double deck electric multiple unit(EMU), inter-car rolling damping device, lateral ride quality, parameter ptimization