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用联合仿真方法分析了基于磁流变(Magnetorheological,MR)阻尼器的两种半主动控制策略对8车编组高速动车组动力学性能的影响。建立了考虑非线性悬挂系统和MR阻尼器的8车编组高速动车组模型,并利用试验数据进行了验证。在进行MR阻尼器性能试验的基础上,利用多项式模型进行曲线拟合,得到了MR阻尼器的9阶多项式模型。通过ADAMS和Matlab联合仿真的方法,设计了开关控制器和改进型开关控制器,对基于MR阻尼器的高速动车组二系悬挂系统横向半主动减振器进行仿真分析。仿真结果表明:对比被动控制,开关控制和改进型开关控制作用下的车体横向加速度均方根值最大分别降低14.85%和22.58%,车辆横向运行平稳性指标最大分别降低4.23%和7.95%。由此可见,改进型开关控制的减振效果更佳。
The effects of two kinds of semi-active control strategies based on Magnetorheological (MR) dampers on the dynamics performance of 8-car high-speed EMUs are analyzed with co-simulation method. An 8-car high-speed EMU model with nonlinear suspension system and MR damper is established and verified with test data. Based on the MR damper performance test, the polynomial model was used for curve fitting, and the 9th order polynomial model of MR damper was obtained. Through the joint simulation of ADAMS and Matlab, the switch controller and the improved switch controller are designed to simulate the transverse semi-active vibration damper of the secondary suspension system of high-speed EMU based on MR damper. The simulation results show that the rms value of vehicle lateral acceleration decreases by 14.85% and 22.58% respectively under the control of passive control, switch control and modified switch control, and the maximum of lateral stability of vehicle decreases by 4.23% and 7.95% respectively. This shows that the improved switch control damping effect is better.