应用模型的智能轮胎垂向力估计算法

Vertical Force Estimation Algorithm of Intelligent Tires Based on Physical Model

垂向力在车辆控制中起着重要作用,也是智能轮胎中的重要参数。本文中提出了一种传感器和物理模型结合的垂向力估计算法。根据加速度曲线特征分析了内衬层加速度信号与轮胎接触角的关系,通过有限元仿真验证了接触角估计算法的可行性;使用环模型建立接触角-垂向力的关系,利用轮胎试验验证关系的准确性。利用有限元模拟智能轮胎,比较垂向力的预测值与仿真值,结果表明使用传感器与轮胎模型结合的方法可以快速准确地进行垂向力估计。

Vertical force plays an important role in vehicle control and it is also an important parameter of intelligent tires.This paper proposes a vertical force estimation algorithm combining sensor with the physical model.According to the characteristics of the acceleration curve,the relationship between the acceleration signal of the inner liner and the contact angle of the tire is analyzed.The contact angle estimation algorithm is verified by finite simulation.The relationship between the contact angle and vertical force is established by the ring model and the correctness is verified by the tire test.The finite element is used to simulate the intelligent tire and the predicted value of the vertical force and the simulation value are compared.The results show that the method combining the sensor with the tire model can quickly and accurately estimate the vertical force.