结合七自由度整车模型及爆胎轮径向刚度的变化，建立了研究爆胎车辆各轮胎垂直载荷特性的数学模型．然后，基于该模型仿真分析了车辆爆胎后轮胎垂直载荷的重新分配．由于载荷的重新分配将严重影响车辆爆胎后的操纵稳定性，为了在爆胎后给车辆操纵稳定性控制提供理想的轮胎力学性能，提出通过各悬架提供主动控制力的方法来控制爆胎后各轮胎的垂直载荷，并采用 PID 控制器调节其动态响应特性．仿真结果表明，该控制系统能很快地衰减爆胎后各轮垂直载荷的震荡，精准、快速地调节爆胎后各轮胎的稳态垂直载荷至所需的大小．

In this paper,first,mathematical models are established based on the whole- vehicle model with 7 de-grees of freedom and the change of radial stiffness of a burst tire.The mathematical models are used to investigatethe vertical load characteristics of burst tires.Then,a simulation based on these models is performed to analyze theredistribution of vertical load after tire burst.As the load redistribution seriously impacts the handling stability ofvehicles,a strategy depending on active suspension control is proposed to control the vertical load on each tire,andPID controllers are used to adjust the dynamic response performance.Thus,excellent mechanical performance oftires for the handling and stable control of tire- burst vehicles can be obtained.Simulated results show that the pro-posed vertical load control system is of high efficiency in damping the dynamic oscillation of vertical load on eachtire and accurately regulating the steady- state vertical load to a desired value.