On-off控制对高速动车组综合动力学性能的影响分析

Effects of on-off semi-active control on dynamic performance of high-speed EMUs

利用ADAMS-Matlab联合仿真的方法研究了on-off半主动控制对高速动车组的横向平稳性、运动稳定性和安全性的影响。根据国内某型号高速动车组的参数,利用多体动力学软件ADAMS/Rail建立了满载工况下的单车动车组模型。随后,运用ADAMS-Matlab联合仿真的方法对被动控制和on-off半主动控制条件下的动车组模型进行了仿真分析,仿真考虑了不同运行速度和不同线路条件等工况。最后,分别计算了两种控制条件下高速动车组模型的横向平稳性、运动稳定性和安全性能。从分析结果可知:与被动控制相比,on-off控制下车辆的横向平稳性指标可大幅提升35.5%,但非线性临界速度降低了16.6%,高速运行工况下的安全性指标也严重下降。因此,on-off控制策略在高速动车组上应用时存在严重缺陷,需要对其进行改良方可应用。

The effects of on-off semi-active control on lateral ride index, lateral stability and safety of high-speed electric multiple units （EMUs） were studied by using co-simulation methods. Firstly, a dynamic model was built using ADAMS software according to the parameters of some domestic EMUs. Then, with the help of ADAMS-Matlab co- simulation, the dynamic simulations of the model with passive control and on-off semi-active control were conducted on different railways at different running speeds. Finally, the lateral ride index, lateral stability and safety index of the EMU model were calculated according to simulation results. The results showed that with on-off semi-active control strategy, the vehicle performance of lateral ride index increases 35.5% than that with passive control; however, the nonlinear critical speed of the EMU model decreases 16.6% , and the safety index drops seriously at high speed; as a result, the on-off semi-active control strategy needs to be improved before application in high-speed EMUs.