用Magic Formula对轮胎特性曲线的拟合与优化

轮胎特性是研究汽车动力学的基础，特别是轮胎的侧偏特性对汽车操纵稳定性有着非常重要的影响，在汽车操纵稳定性的仿真研究中，用试验的方法来获得轮胎特性已不能满足研究的需要，而有必要建立轮胎模型，作者介绍了采用Magic Formula建立轮胎模型的方法，包括试验曲线的样条化、优化目标函数的设计和拟合优化方法等，得到了MagicFormula轮胎模型中的各参数，为进一步对汽车操纵稳定性的仿真研究奠定了基础。

Optimization of Curve Fitting Used in Development of Magic Formula Tire Model

Characteristics of a tire are the foundation of vehicle dynamics studying, especially play a vital role in vehicle handling study. It is necessary to establish a tire model in the simulation for vehicle handling because the tire characteristics got by test can not be satisfied.The optimization of fitting to the tire test data curves by Magic Formula is discussed, included the digitalization of tire test data curves, designing objective functions and optimization processes,etc. Finally the parameters in Magic Formula tire model are obtained and they lay a foundation for the development of vehicle handling aftertime.