汽车转向机构仿真及优化设计  

Simulation and Optimal Design of Automobile Steering Mechanism

作　　者：王海涛[1] 陈哲明[1] 

机构地区：[1]重庆理工大学,重庆400054

出　　处：《计算机仿真》2013年第3期162-165,200,共5页Computer Simulation

摘　　要：研究汽车转向机构优化设计问题,传统转向机构设计忽略转向机构与悬架干涉,造成实际工况下前轮定位参数变化过大,导致操纵稳定性下降。为了提高实际工况下转向性能,针对原地转向及车轮跳动工况,根据阿克曼转角几何原理及前轮定位参数变化规律,采用多目标优化方法建立复合加权惩罚函数进行优化设计。并在建立优化模型时引入试验设计方法(DOE)进行设计变量筛选。应用ADAMS软件建立某车前悬架总成动力学模型进行仿真优化。仿真结果表明,优化后模型更好地满足了阿克曼转角几何原理,转向机构与悬架更加匹配,验证了改进方法在转向机构优化设计中的实用性与优越性。In steering mechanism design, the ignorance of interference between suspension and steering mecha- nism impairs handling and stability. Aiming at improving steering performance, a multi-objective optimize method was used. According to Ackerman geometry principle and front wheel alignment parameters variation law, a compre- hensive penalty function was developed. Design parameters were selected by DOE method. Simulation and optimal design were conducted to the front suspension assembly developed by ADAMS. Simulation resuhs demonstrate that the optimized front suspension assembly can meet the Ackerman geometry principle better and verify the effectiveness of this design method in steering mechanism optimal design.

关 键 词：试验设计 优化设计 阿克曼转角几何原理 虚拟样机 

分 类 号：TB24[一般工业技术—工程设计测绘]