Simulation Research For Brake Force Distribution Strategy Under The Cornering Brake Work Condition Of Vehicle

The brake quality is one of the key and important qualities of vehicle. It is a complex and dangerous work condition that the brake is executed when the vehicle runs under cornering work condition. During this course, if the brake force is distributed unreasonably, the vehicle will lose stability and this will results in sideslip, crisis turn and track offset. These situations discussed above will result in accidents. This paper mainly researches on the brake force distribution strategy under this work condition.First,The eight freedom of motion vehicle model is constructed by introducing conventional coordinates. The whole vehicle model includes wheel model, brake actuator model, vehicle chassis model, load shift calculation model, wheel lateral deviation angel calculation model and so on. The basement which for researching on simulation research of vehicle cornering brake dynamic characteristic and ESBS control logic validation is established by constructing the whole vehicle model.Secondly, turning braking vehicles factors affecting the stability of the in-depth analysis, and turning braking vehicle dynamic characteristics analysis of the simulation, turning braking vehicles instability manifested mainly in the wheels tend to lose their attachment Stability and vehicles tend to shift stability. This paper summarizes improve and enhance traffic control and stability of the programme, borrowing ABS system hardware and control thinking, through Ackermann to calculate and control logic model ABS identified ESBS slip rate threshold, and take the initiative in maintaining built a turning braking Vehicle stability of the ESBS (Enhanced Stability Brake System) High braking stability system control logic, as well as the determination of the parameters.The Braked turning-vehicle is controlled in ESBS and ABS by using Matlab / Simulink simulation software, which are simulated in the high road adhesion, low attachment road and two-way road. It is verificated that the controling logici of ESBS is more effective than one of ABS to keep the stability of the braked turning-vehicle. The paper described the study in the allocated strategy of ESBS system's braking force has further enhanced the stability of the braked turning-vehicle.