轮胎非稳态侧偏特性非线性仿真模型

在稳态指数统一模型的基础上，根据动态过程有效滑移率的微分表达，建立轮胎非稳态侧偏特性非线性仿真模型。在实验中发现当用有效滑移率和准稳态概念来计算回正力臂 Ｄｘ 时，有滑移率超前而回正力臂滞后现象，该现象可以通过一个一阶滤波器来表达。模型的计算结果与实验结果对比，表明该模型可以反映轮胎非线性侧偏特性，可以用于汽车操纵动力学研究。

A Non linear Non Steady State Side Slip Tire Simulation Model

Through the generalized steady state tire model and the theoretical equation of slip ratio, a non-linear non-steady state side slip tire model is proposed based on a quasi-steady state concept. It is found that when the pneumatic trial is calculated from effective slip ratio associated with steady state tire model, an additional differential term for slip ratio and a first order filter for slip ration are needed to express the generation process. The non-linear non-steady lateral force and aligning moment are compared with test data, showing the feasibility of application for the studies of vehicle dynamics.