动车组制动防滑控制建模仿真与试验研究

Modeling Simulation and Testing Research of Anti-skid Control of EMU Braking

根据动车组制动系统工作原理,将其划分为制动防滑控制子系统、车辆制动动力学子系统及气制动单元子系统,搭建动车组制动系统集成化仿真平台。基于联合仿真方法,进行紧急制动工况下的防滑控制仿真模拟,与硬件在环半实物仿真台架的试验结果进行对比分析,验证了仿真模型的正确性以及防滑控制策略的有效性,提出了基于黏着利用率的防滑性能评价方法。结果表明:该仿真模型可用于模拟轮对滑行过程中的滑行工况,可用于防滑控制策略的有效性验证;防滑控制策略能够达到控制要求,在发生连续滑行时能够达到稳定的防滑效果。

According to the working principle of EMU braking system,the system is divided into braking anti-skid control subsystem,vehicle braking dynamics subsystem and air braking unit subsystem,and EMU braking system integrated simulation platform is established.Based on cosimulation,the anti-skid control simulation under emergency braking condition is carried out,and the results are compared and analyzed with the test results of hardware-in-the-loop simulation bench.The effectiveness of the anti-skid control strategy and the correctness of simulation model are verified,and an anti-skid performance evaluation method based on adhesion utilization is put forward.The results show that the simulation model can be used to simulate the sliding condition,which can be used for the effectiveness verification of the anti-skid control strategy.The anti-skid control strategy can meet the control requirements and achieve a stable antiskid effect when continuous sliding occurs.