摘要
研究赛车比赛转向系统动特性优化问题,由于赛车高速和赛道特殊的特点,赛车的转向稳定性问题和轮胎的单侧偏磨问题一直困扰着赛车设计者。针对上述问题,提出了一种符合赛车赛道特殊设计的断开式转向梯形机构设计方案。利用MATLAB计算软件,建立了空间转向梯形运动学模型,进行优化设计,控制梯形的Ackerman与理想Ackerman的误差,来提高赛车的转向稳定性。又建立了赛车转向系统和悬架系统动力学模型并进行了仿真分析,在车轮上下跳动时,控制车轮前进变化量的大小,可减弱轮胎的单侧偏磨程度。结果表明设计出的转向梯形机构方案具有良好的转向稳定性,很好地缓解了轮胎的单侧偏磨现象。
In car races,because of car＇s speed and the special characteristics of the track,the problems of car＇s steering stability and unilateral side tire wearing have puzzled designers.To solve the problems,this paper puts forward a steering trapezoid body design which accords with the specially designed track.Calculated by MATLAB software,the steering trapezoid space kinematic model is established to optimize the design,control the error between the trapezoid Ackerman and ideal Ackerman,and improve the car＇s steering stability.The dynamics models of the car steering system and suspension system are established and simulated.When the wheel is jumping up and down,controlling the front wheel can reduce the extent of unilateral partial tire wear.Simulation results show that the optimal design of steering trapezoid mechanism has a good steering stability,and is a good solution to the partial side tire wear problems.
出处
《计算机仿真》
CSCD
北大核心
2011年第4期349-352,共4页
Computer Simulation
关键词
转向梯形
方程式赛车
优化
灵敏度分析
Ssteering geometry
Formula SAE Car
Optimization
Sensitivity analysis
