Research on Controlling Method of Steering Wheel Shimmy of Vehicle at High Speed
-
摘要: 通过分析方向盘摆振的产生机理,提出了一种试验与仿真相结合的高效解决方法。通过试验对方向盘摆振现象进行诊断,找出方向盘摆振主要的激励源与传递路径;通过控制轮胎动平衡参数,降低轮胎激励;建立包括转向节-方向盘的完整转向系统有限元模型,并在转向节处加载实测加速度频谱对摆振进行仿真,将板件厚度与衬套刚度设置为离散优化变量,方向盘12点钟Y向加速度为目标函数,应用序列二次规划法优化转向系统的结构与隔振性能。通过工程实例证明:该方法能够快速、有效的解决方向盘摆振问题。Abstract: Through analyzing generated mechanism of steering wheel shimmy, an efficient solution combination of physical experiment and simulation is proposed. Firstly, steering wheel shimmy phenomenon is diagnosed through test, and then the major excitation source and transmission path can be identified. Secondly, the relevant parameters of tire balancing are controlled to reduce the tire incentives. Thirdly, finite element model (FEM) of the whole steering system from the knuckle to the steering wheel is conducted, and then frequency spectrum of acceleration which is obtained based on test is loaded at the knuckle to simulate steering wheel shimmy. Finally, the sequential quadratic programming is performed to optimize the steering system structure and improve the vibration isolation performance. The plate thickness and stiffness of bushing are set as discrete optimization variables, and the Y-direction acceleration of steering wheel at 12 o'clock is set as the objective function. Engineering examples demonstrate that the proposed method can effectively solve the problem of steering wheel shimmy.
-
Key words:
- acceleration /
- control /
- efficiency /
- experiments
-
[1] Demers M A. Steering wheel vibration diagnosis[R]. SAE Paper,2001-01-1607 [2] Wu X T, Wong J M, Farhad M. Fundamental dynamics of steering wheel torsional vibration on smooth roads[R]. SAE Paper,2006-01-0564 [3] Rafai S, Toney P, Humphreys J. Jeep cherokee shimmy analysis:a doe approach[R]. SAE Paper 982835 [4] Pahwa G S. Modelling and analysis of rotational steering vibration for SUV using multibody dynamics tool[R]. SAE Paper,2008-28-0045 [5] Yu J H, Nutwell B, Brickner B. Analysis of vehicle chassis transmissibility of steering shimmy and brake judder: system modeling and validation[R]. Paper SAE,2007-01-2341 [6] Kim K W, Park J B, Lee S J. Tire mass imbalance, rolling phase difference, non-uniformity induced force difference, and inflation pressure change effects on steering wheel vibration[R]. Paper SAE 2005-01-2317 [7] 张永利,许翔,吴云.高速行驶时汽车方向盘摆振的控制[J].噪声与振动控制,2011,(2):56-58 Zhang Y L, Xu X, Wu Y. Control on steering wheel shimmy of the car at high speed[J]. Noise and Vibration Control,2011,(2):56-58 (in Chinese) [8] 谭万军,杨亮,吴行让,等.基于ODS与试验模态分析的方向盘摆振优化[J].振动工程学报,2011,(10):498-504 Tan W J, Yang L, Wu X R, et al. Steering wheel shimmy optimization based on ODS analysis and experimental modal analysis[J]. Journal of Vibration Engineering,2011,(10):498-504 (in Chinese) [9] 周宁,李磊,戴声良.汽车高速方向盘摆振问题整改[J].汽车工程师,2011,(11):49-51 Zhou N, Li L, Dai S L. Research on steering wheel swaying in high speed[J]. Auto Engineer,2011,(11):49-51 (in Chinese) [10] 陈南.汽车振动与噪声控制[M].北京:人民交通出版社,2005:137-143 Chen N. Automotive vibration and noise control[M]. Beijing: China Communication Press,2005:137-143 (in Chinese)
点击查看大图
计量
- 文章访问数: 209
- HTML全文浏览量: 37
- PDF下载量: 12
- 被引次数: 0