摘要
为控制爆胎车辆的稳定性,基于UA-Tire理论模型建立了爆胎轮胎模型,并通过修改该轮胎模型参数建立了轮辋触地模型,将此两种模型载入CarSim构建爆胎车辆模型。结合传统稳定性控制方法,设计了模糊控制器,对爆胎车辆模型的附加横摆力矩进行非线性控制。以100 km/h直线、弯道行驶爆胎及爆胎急转向工况为例,利用CarSim与Simulink进行了联合仿真,结果表明:建立的轮辋触地模型能够模拟触地时车轮的力学性能;设计的控制器有效控制了爆胎车辆的侧向位移、横摆角速度与车身侧倾角等,并防止了轮辋触地。
To improve the stability of vehicle after tire blow-out, a flat tire model is established by using UA-Tire model and a mechanical model of the rim touched ground is also simulated by changing parameters in UA-Tire mod- el. Then, by importing the two models to CarSim, a whole vehicle model after tire burst is built. Furthermore, based on traditional analysis of vehicle stability, a fuzzy controller is designed to control the yaw moment of the ve- hicle. The two models and the controller are tested by co-simulation of CarSim and Simulink under three working conditions-straight and curve driving at 100 km/h when tire blows out, and steering sharply after tire deflated. The results indicate that the model of rim touched ground can qualitatively describe mechanical properties of the wheel. The lateral displacement, yaw rate and roll angle can be efficiently controlled by the designed controller, so that the situation of rim touching ground can be prevented.
出处
《机械科学与技术》
CSCD
北大核心
2013年第8期1103-1107,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
教育部长江学者与创新团队发展计划项目(531105050037)
湖南大学汽车车身先进设计制造国家重点实验室自主课题项目(61075003)资助
关键词
稳定性
爆胎轮胎
模糊控制器
横摆力矩
tires
vehicles
computer simulation
computer software
control
fuzzy control
fuzzy sets
mathe-matical models
membership functions
stability
blown-out tire
yaw moment
