Under dynamic conditions, the dynamic force between the suspended equipment and the car body is substantially increased. This increase not only affects the ride comfort but also substantially raises the likelihood of fatigue damage to the suspended equipment. A multiobjective analytical target cascading (ATC) optimization is proposed to improve the ride comfort of high-speed trains and reduce the vibration of the suspended equipment. A mathematical simulation model of the vehicle equipment system is established, and the acceleration frequency-response function expression of the car body and the suspension system is obtained. The comfort index of the car body and the acceleration root mean square (RMS) of the suspended equipment are calculated by combining the German vertical irregular track spectrum and the comfort filter function. Meanwhile, the ATC method is used to optimize the car body comfort index and the acceleration RMS of the underframe suspended equipment. Then, the availability of the optimization method is evaluated via numerical simulation. Compared with the original suspension scheme of the underframe equipment, when the running speed of the vehicle is 300 km/h, the RMS value of the vibrational acceleration of the underframe equipment after optimization decreases by 19.9 %, and the ride comfort indexes at the car body center and above the front and rear bogies are improved by 6.4 %, 0.1 %, and 1.1 %, respectively. Simulation results demonstrate that ATC optimization can improve the railway vehicle ride comfort and reduce the vibration of the suspended equipment. This paper provides a new approach to the suspension parameter design of equipment.

在动态条件下，悬架设备与车身之间的动力大大增加。这种增加不仅影响乘坐舒适性，而且还大大增加了悬挂设备疲劳损坏的可能性。提出了一种多目标分析目标级联（ATC）优化技术，以提高高速列车的乘坐舒适性并减少悬挂设备的振动。建立了车辆装备系统的数学仿真模型，得到了车身和悬架系统的加速度频率响应函数表达式。车身的舒适度指数和悬架设备的加速度均方根（RMS）是通过结合德国垂直不规则轨道谱和舒适度过滤函数来计算的。与此同时，ATC方法用于优化车身舒适性指数和底架悬挂设备的加速度RMS。然后，通过数值模拟评估优化方法的可用性。与底架设备的原始悬架方案相比，当车辆的行驶速度为300 km / h时，优化后的底架设备的振动加速度的RMS值降低了19.9％，并且在汽车上的乘坐舒适性指标车身中央和前转向架和后转向架上方分别提高了6.4％，0.1％和1.1％。仿真结果表明，ATC优化可以提高铁路车辆的乘坐舒适性，并减少悬架设备的振动。本文为设备的悬架参数设计提供了一种新方法。