全地形车前悬架系统对操纵稳定性的影响研究

Research on the Effect of the All-Terrain Vehicle Front Suspension on Handing stability

全地形车是指适合各种地形的交通工具,具有良好的机动性,操纵稳定性是全地形车重要性能之一,而悬架的定位参数对全地形车的操纵稳定性具有较大的影响。以全地形车前悬架系统为研究对象,在ADAMS/Car中建立了其参数化模型,通过仿真得出全地形车前悬架参数随车轮上下跳动的变化曲线。分析了前轮定位参数(包括前轮外倾角、前轮前束角、主销内倾角、主销后倾角)对操纵稳定性的影响,找出优化目标,调整悬架硬点参数,进行参数优化设计,最终得到满足悬架和整车设计要求的悬架系统。研究结果表明,采用该方法研究悬架系统对操控稳定性的影响是可行的。

All-terrain vehicles refers to the transportation tools suitable for all kinds of terrain, which have good mobility. Steering stability is one of the important performance of all-terrain vehicles, and the positioning parameters of suspension has a great influence for all-terrain vehicle steering stability.It took an all-terrain vehicle front suspension system as research subject, established it＇s parametric model in ADAMS/Car, obtained the changing curves of the suspension parameters with the wheels moving up and down by simulation. Analysed the front wheel alignment parameters＇ （including camber angle, toe angle, kingpin inclination, caster angle） influence on handling stability. Found out the optimization goal, adjusted the parameters of suspension hard points, then had a design of optimal parameters. Results of the design shows that,after optimal design,get the suspension system which can meet the design requirements of fuU vehicle. Results of the research shows that, using this method to analyze suspension systems＇ influence on handling stability is feasible.