The paper investigates the effect of tire inflation pressure on the lateral dynamics of a passenger car, and presents a possible control-oriented methodology aimed at adapting tire pressure to the current vehicle loading condition targeting a reference characteristic. Starting from the tire characteristics at several inflation pressure levels, the paper investigates the effect of changing selectively tire pressure on each of the two axles, through theoretical calculation of the curvature gain based on the computation of the derivatives of stability, and compares the obtained sensitivity to the results of a multibody simulation model validated through on-track tests. Finally, the work presents a possible algorithm that could be implemented on-board vehicle ECU to provide, for the current loading condition of the vehicle, a tire pressure combination that targets a specific lateral dynamics characteristic. The algorithm is intended as part of the control logic of an intelligent Central Tire Inflation System (CTIS) able to adjust automatically tire pressure according to the actual vehicle working conditions.

本文研究了轮胎充气压力对乘用车横向动力学的影响，并提出了一种可能的面向控制的方法，旨在使轮胎压力适应具有参考特性的当前车辆负载条件。从几个充气压力水平下的轮胎特性出发，通过基于稳定性导数的理论计算曲率增益，研究了选择性改变轮胎压力对两个车轴的影响，并比较了获得的灵敏度。通过现场测试验证的多体仿真模型的结果。最后，这项工作提出了一种可能的算法，该算法可以在车载ECU上实现，以为车辆的当前负载情况提供 以特定的横向动力学特性为目标的胎压组合。该算法旨在作为智能中央轮胎充气系统（CTIS）控制逻辑的一部分，该系统能够根据实际车辆工作条件自动调节轮胎压力。