Research On Dynamic Modeling Of Blow-out Vehicle And Controlling

With the development of Chinese auto industry and the increase ofownership, the traffic accident also happens more and more. In all the causeof road traffic accidents, the No.1is the tire blow-out suddenly when the caris driving at a high-speed. The serious result of tire blow-out drives peopleto pay more attention to the blow-out automobile safety. The paperconducted research on the blown tire model, the analysis of vehicle’s kineticcharacteristics after tire blow-out, the vehicle stability control method aftertire blow-out and etc.The paper establishes vehicle dynamics model, with the study of themain parameters of the car, such as movement track, yaw velocity,transverse acceleration, and aligning torque and so on. The tire’s propertieshave been analyzed on the basis of H.B.Pacejka’s magic tire.With researches on relevant papers at home and abroad, the blown-outtire modeling has beendeveloped based on the H.B.Pacejka’s magic tire to discuss the change oftire’s properties, which conducts several key variables involving hecoefficient of rolling resistance,the radial stiffness, the cornering stiffness and CSLIP.With simulation research on the model of the vehicle after tire blow-out,it has been deeply analyzed that the influence on vehicle’s kinetic characteristics of blown tire’s properties after tire blow-out, as well as thecauses of vehicle kinetic characteristics has been further explored, whichillustrates the reason of yaw and provides the theory basis of control for thevehicle after tire blow-out.It has been exploit profoundly that control theory on blown-out tirevehicle from the perspective of steering system dynamic, with the result ofthe simulation experiment of tire burst vehicles and the drivers-car closedloop control dynamics theory, combining with the model of the vehicle aftertire blow-out and steering system dynamic model. This paper analyses thestability control applying used control theory in tire blow-out vehicle whichmakes the yaw of the vehicle after tire blow-out to be correct, and be able toeffectively prevent the traffic accident caused by tire blow-out to a certainextent.