UniTire统一轮胎模型

doi:10.3901/JME.2016.12.090

摘要/Abstract

摘要： UniTire模型是用于车辆动力学仿真和控制的非线性非稳态轮胎模型,能够准确描述轮胎在复杂工况下的力学特性。UniTire模型以理论模型为基础,采用无量纲的表达形式,具有统一的滑移率定义;统一的无量纲印迹压力分布表达;统一的各向轮胎力无量纲建模;统一的各向摩擦系数表达;无量纲边界条件的统一满足;不同速度下轮胎模型的统一表达;稳态与非稳态特性的统一;侧倾、转偏作用与侧偏特性的统一。不仅能够对各种工况下的轮胎力学特性进行高精度的表达,还具有良好的外推能力和预测能力,能够对复合工况、不同路面和不同速度下的轮胎特性进行准确的预测。本研究围绕UniTire的建模思想,介绍UniTire建模的理论基础、稳态和非稳态模型以及模型的表达和预测能力并进行试验验证。

关键词: UniTire, 非线性非稳态, 轮胎模型, 预测

Abstract: UniTire is a non-linear and non-steady tire model for vehicle dynamic simulation and control, which can describe tire properties accurately under complex conditions. Based on analytical tire model and by adopting the non-dimensional expression, the UniTire model has some unified characteristics Unified definition of slip ratios; unified expression of non-dimensional contact pressure distribution; unified non-dimensional modeling of combined tire forces; unified expression of anisotropic tire friction; unified satisfactory of non-dimensional boundary conditions; unified expression of tire model under different travelling speeds; unified expression of tire steady and non-steady properties; unified expression of camber, turn slip and side slip. UniTire model not only can describe tire properties with high precision under variety of conditions, but also has the capacity of effective extrapolation and prediction. It is able to predict tire properties satisfactorily for combined slip condition, different roads and speeds. According to the modeling ideas of UniTire, the theoretical basis, steady and non-steady model of UniTire model will be introduced, and the capacity of expression and prediction will be validated by some test data.

Key words: non-linear and non-steady, prediction, tire model, UniTire

中图分类号:

TG156

郭孔辉. UniTire统一轮胎模型[J]. 机械工程学报, 2016, 52(12): 90-99.

GUO Konghui. UniTire: Unified Tire Model[J]. Journal of Mechanical Engineering, 2016, 52(12): 90-99.

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