基于主动转向的爆胎汽车操纵稳定性模糊控制研究

摘要

汽车在高速行驶时发生爆胎后引起的交通事故危害较大,为了能够更好地控制爆胎后的方向稳定性,主要是通过分析爆胎后的主要影响因素,建立爆胎汽车方向失稳动力学模型,并建立基于主动转向的模糊控制器.重点研究了汽车爆胎后车轮的滚动半径变小以后对汽车行驶方向失稳的影响,进而分析由于爆胎汽车姿态变化而引起的载荷转移,以及由于载荷转移所导致的各个车轮上的侧偏力大小对汽车行驶方向失稳的影响.最后通过仿真验证模糊控制系统能够较好的纠正由于爆胎引起的汽车跑偏.%It would be a very dangerous accident as a car running in high speed and tire is puncturedln order to better control the directional stability after a puncture ,muin influencing factors after tire puncturing are analyzed,and dynamic model for directional instability of the car with tire puncturing is established as well as a fuzzy controller based on active steering is built.The impact of lessen rolling radius of the burst-tire wheel after puncture on the directional instability is re searched, and then load transfer caused by the changes in vehicle attitude as puncture occurs is analyzedAs a result the load transfer impact of cornering force of each wheel on the instability of the vehicle direction is analyzed as we IL Finally, through simulationg the fuzzy control system is verified to better correct the car pull to one side caused by tire puncturing