摘要
在ADAMS/CAR环境下建立了包含8个子系统的某SUV车整车动力学仿真模型,依据国家标准GB/T6323.6—94进行了稳态转向特性仿真分析。发现该车具有先不足转向后过多转向的问题,并且中性转向点的侧向加速度值an偏小。通过对悬架刚度、稳定杆刚度及限位块的刚度特性的优化设计,解决了该车的过多转向问题,使之具有了适度的不足转向特性,并且使an达到了设计要求。最后对改进前后的方案进行了对比分析,说明优化的效果是非常明显的。
The SUV dynamics virtual prototype was established using ADAMS/CAR, which included 8 vehicle subsystems. Based on the prototype, the stable steering test was simulated according to Chinese standard GB/T 6323.6-94. The simulation test of the SUV shows the problem of stable steering characteristic changing from under steer to over steer. The result displays the other problem of the neutral steer point with small lateral acceleration an. By optimizing suspension rate, stabilizer stiffness and bumper characteristic, the stable steering characteristic is acceptable under steer instead of over steer, as well as an reached design target. The result shows the validity of optimization calculation.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第7期2068-2071,共4页
Journal of System Simulation
基金
国家“863”高技术研究发展计划(2007AA04Z122)
关键词
稳态转向特性
不足转向
过多转向
优化
stable steering characteristic
under steer
over steer
optimization
