分段式转向梯形断开点的优化设计

文章建立了某轮式车辆的前独立悬架和转向系统的参数化模型,阐述了分段式梯形断开点设计需要遵循的两点原则,分析了断开点三个方向坐标对阿克曼转向特性以及车轮跳动过程中前束角变化的影响,以实际外轮转角与理论外轮转角差值最小以及前束角变化最小为优化目标,对断开点位置进行了优化分析。研究结果表明,断开点坐标的优化可以改善车辆转向特性,同时提高转向系统与悬架系统的运动协调性,为轮式车辆转向梯形的设计提出了较为合理的优化方案。

Optimization Design of Splitting Point of Steering Trapezium

The parametric analysis model of the suspension and steering system of certain wheeled vehicle has been established.Two design principle for Splitting Point of steering trapezium has been expounded.The effect of splitting point on Ackerman steering characteristics and toe angle has been studied.Taking minimum deviation between actual wheel turning angle from the angle and theoretical turning angle,the minimum variation of the toe angle as the optimal object,Optimization Design of Splitting Point has been studied.The results indicated that,the wheeled vehicle steering characteri-stics and the correspond between steering system and suspension has been improved by Optimization Design of Splitting Point.A reasonable optimization program for the optimize and design of vehicle is proposed in this paper.