摘要
为解决某轻型客车平顺性较差的问题,研究了满足操纵稳定性和通用性要求的客车平顺性多目标优化设计方法。通过分析提出后悬架板簧加宽和加长、前悬架扭杆弹簧直径缩小的优化设计方案,进行了客车前后悬架刚度匹配。针对优化设计车型,用Adams软件进行建模仿真,用Matlab程序计算客车加权加速度均方根值,以满足平顺性要求。然后进行实车试验,并与原车性能进行对比分析。结果表明,优化车型的平顺性指标均比原车有大幅度提高,稳态回转的综合评价分值也略有提高。
To solve the poor ride comfort problem of a light passenger car, a multi-objective optimization design method for the passenger bus ride comfort was studied to meet the handling stability and the universal requirements. According to the analysis, an optimization scheme for widening and lengthening the rear suspension leaf spring, and narrowing the diameter of the front suspension torsion bar spring was proposed to make the front and rear suspension stiffness match. The optimal vehiele was modeled and simulated by Adams software, the weighted RMS acceleration was calculated by Matlab, and the results matched the requirements. Then, the experiment on a real vehicle was carried on, and the comparative analysis of the performance between the optimized vehicle and the original vehicle was done. The results show that the ride comfort index of the optimization one was greatly increased in comparison with that of the original one, and its score of the comprehensive evaluation of steady-state rotation was also slightly higher.
出处
《重庆理工大学学报（自然科学）》
CAS
2010年第10期13-17,共5页
Journal of Chongqing University of Technology：Natural Science
基金
国家自然科学基金资助项目(50805066)
关键词
平顺性
优化设计
试验评价
刚度匹配
操纵稳定性
ride comfort
optimal design
test evaluation
stiffness matching
handling and stability
