履带车辆半主动悬挂多体及控制联合仿真研究

在履带车辆悬挂系统线性振动模型基础上，证明了悬挂最优阻尼比的存在，提出了统计意义上的最优阻尼控制策略，即为履带车辆悬挂半主动控制的理论基础。通过基于多体动力学理论的虚拟样机方法对某型履带车辆整车悬挂系统进行了仿真研究，结合“机械系统＋控制系统”联合仿真技术，对比了该车分别采用被动悬挂和半主动悬挂时的动力学特性，得出了该履带车辆采用半主动悬挂可显著降低车辆振动加速度，提高车辆乘坐舒适性的结论。从而验证了多体理论和联合仿真技术在履带车辆半主动悬挂技术的可行性。

Co-Simulation Research on Multi-Body & Control of Semi-Active Suspension System of Tracked Vehicles

The existence of Optimal Damping Ratio(OPR) of a suspension system is proved by linear vibration model for suspension system of tracked vehicle in this paper.The theory of semi-active suspension is established by the OPR control policy of statistic meaning.Simulation of suspension dynamics of a tracked vehicle is researched using virtual prototyping method based on multi-body dynamics theory with the co-simulation technology of mechanical and control system.Dynamic characteristic comparison of the tracked vehicle equipped with both passive and semi-active suspension is done by using the co-simulation method.Finally,a conclusion is drawn from the simulation results that ride-comfort of tracked vehicles can be improved and vibration acceleration can be decreased obviously if the OPR control semi-active suspension is used.The feasibility of applying multi-body dynamics theory and co-simulation technology to semi-active suspension system of tracked vehicle is proved by simulation results.