高速列车多目标约束横向半主动控制算法研究

Research on multi-objective constrained transverse semi-active control algorithm for high-speed trains

摘要:

传统的高速列车横向半主动控制研究,主要以改善列车车体横向运行平稳性为目的。但在其横向运行平稳性提升后,由于其与各部件之间的相互耦合作用,往往导致构架横向振动和轮轨横向作用加剧,从而使得脱轨系数增大,列车运行安全性能变差。针对这一问题,提出在虚拟惯性阻尼半主动控制算法和脱轨安全半主动控制算法的基础上,设计两个控制回路的多目标约束混合半主动控制算法,在实现列车横向半主动控制的同时,避免脱轨系数加大,从而同时提高列车平稳性和安全性。并利用Simpack建立了某型高速列车多刚体动力学模型,联合Matlab/Simulink建立了联合仿真分析系统对车体横向半主动控制进行研究。结果表明：相较于虚拟惯性阻尼天棚半主动控制算法,采用多目标约束半主动控制算法,不仅能够有效抑制车体横向振动,改善车体横向运行平稳性,提高列车平稳性等级。而且能够有效减小列车脱轨系数,提高列车运行安全性。

Abstract:

The research on the lateral semi-active control of high-speed trains is mainly aimed at improving the lateral running stability of the train body.However, after the improvement of its lateral running stability, the interaction between it and various components often leads to the intensification of the transverse vibration of the frame and the transverse action of wheel and rail, which increases the derailment coefficient and makes the safety performance of the train worse.In order to solve this problem, this paper puts forward the virtual inertial damping semi-active control algorithms and derailment semi-active control algorithm on the basis of the two control circuit design of multi-objective constraint hybrid semi-active control algorithm: at the same time of train transverse semi-active control, avoid derailment coefficient increase, and at the same time improve the comfort and safety.A multi-rigid-body dynamics model of a high-speed train was established by using Simpack, and a co-simulation analysis system was established by combining Matlab/Simulink.The results show that, compared with the semi-active control algorithm of virtual inertia damping canopy, the semi-active control algorithm of multi-objective constraint can not only effectively restrain the transverse vibration of the vehicle body, but also improve the lateral running stability of the vehicle body and improve the level of train stability.Moreover, it can effectively reduce the derailment coefficient and improve the safety of train operation.