液压助力转向轿车中心区操纵性分析  

On-center handling analysis of passenger car with hydraulic power steering

作　　者：李飞[1] 郭孔辉[1] 丁海涛[1] 张建伟[1] 王昭建[2] 郭文鑫 

机构地区：[1]吉林大学汽车动态模拟国家重点实验室,长春130025 [2]中国人民解放军装甲兵技术学院,长春130117 [3]一汽大众汽车有限公司,长春130011

出　　处：《哈尔滨工业大学学报》2009年第5期117-120,共4页Journal of Harbin Institute of Technology

基　　金：国家高技术研究发展计划资助项目(2006AA110103)

摘　　要：为了研究和改善汽车中心区操纵性,在Adams/Car平台下建立了液压助力转向轿车整车模型,对该模型与试验数据进行了对比验证,并提出中心区操纵性分析评价的主要方法.基于该模型通过改变转向系的角传动比、刚度、干摩擦和助力特性等参数研究了其对汽车中心区操纵性的影响,仿真结果表明:角传动比对转向灵敏度影响最大;干摩擦和助力特性对转向回正和路感有较大影响.设计时应首先选取合适的角传动比和助力特性,并尽可能降低干摩擦,且兼顾转向系刚度的影响,进行协调设计匹配.In order to investigate and improve the on-center handling performances of passenger car, a car model with hydraulic power steering was built in Adams/Car, and was verified with experimental data. The method to analyze and evaluate the on-center handling performances was proposed. Based on the model, steering ratio, steering stiffness, steering friction and assist characteristics were adjusted to investigate their influences on the on-center handling performances. The results indicate that the steering ratio has the greatest impact on the steering sensitivity; the steering friction and assist characteristics have greater influences on steering aligning and road feelings. In the design of passenger car＇ s on-center handling, appropriate steering ratio and assist characteristics should be chosen, the steering friction should be minimized, and the steering stiff- ness should be considered to match the coordinated design.

关 键 词：液压助力转向 中心区 操纵性 

分 类 号：U461.6[机械工程—车辆工程]