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首页> 外文期刊>SAE International Journal of Commercial Vehicles >Improving Multi-Axle Vehicle Steering Coordination Performance Based on the Concept of Instantaneous Wheel Turn Center
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Improving Multi-Axle Vehicle Steering Coordination Performance Based on the Concept of Instantaneous Wheel Turn Center

机译：基于瞬时轮圈中心概念改善多轴车辆转向协调性能

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摘要

A new concept of instantaneous wheel turn center (IWTC) is proposed to evaluate and improve multi-axle vehicle steering coordination performance. The concept of IWTC and its calculation method are studied. The index named dispersion of IWTC is developed to evaluate the vehicle steering coordination performance quantitatively. The simulation tests based on a three-axle off-road vehicle model are conducted under different vehicle velocities and lateral accelerations. The simulation results show that the turn centers of different wheels are disperse, and the dispersion becomes larger with the increase of vehicle velocities and lateral acceleration. Since suspension has important influences on vehicle steering performance, the genetic algorithm is used to optimize the suspension hard points and bushing stiffness, aiming at minimizing the dispersion of wheel turn centers (DWTC) to improve the vehicle steering coordination performance. The optimization results indicate that the suspension optimization can effectively reduce the DWTC and improve the vehicle steering coordination performance. The proposed wheel turn center method provides an index and tool for the suspension design and optimization in the pre-development phase of the vehicle.
机译：提出了一种新的瞬时轮旋转中心（IWTC）的概念来评估和改善多轴车辆转向协调性能。研究了IWTC的概念及其计算方法。开发了IWTC的指数名为IWTC的索引，以定量评估车辆转向协调性能。基于三轴越野车辆模型的仿真试验在不同的车速和横向加速下进行。仿真结果表明，随着车辆速度和横向加速度的增加，不同轮子的转弯中心分散，分散体变大。由于悬浮液对车辆转向性能具有重要影响，因此遗传算法用于优化悬架硬点和衬套刚度，旨在最小化轮转中心（DWTC）的分散来改善车辆转向协调性能。优化结果表明，悬架优化可以有效地减少DWTC并改善车辆转向协调性能。所提出的车轮转弯中心方法为车辆的预开发阶段提供悬架设计和优化的指标和工具。

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