轮胎侧偏刚度测量系统的设计

Design of Tire Cornering Stiffness Measurement System

针对现有轮胎侧偏刚度是在车辆静止状况下估算得出的问题,设计出一种实时在线估算轮胎侧偏刚度的系统。此系统充分考虑车辆的速度、质心侧偏以及车辆横摆对轮胎侧偏刚度的影响,以线性二自由度车辆模型为基础,建立求解前后轮侧偏刚度的关系式,通过车载传感器采集车辆运动参数,进而计算出轮胎的侧偏刚度。

Existing tire cornering stiffness are estimated in the still situation of vehicles. This method does not fully consider the impact of the speed of the vehicle and mass center and the yaw-rate. Therefore, this paper proposes a real-time online estimation system of tire cornering stiffness. This system, based on linear two degrees vehicle model, establishes the relations of solving cornering stiffness, and by collecting vehicle motion parameters with vehicle＇s sensors the tire cornering stiffness can be calculated.