基于逆子结构法的方向盘怠速振动问题研究  

Research on idle vibration of steering wheel based on inverse sub-structure method

作　　者：王维 陈剑[1,2] 戎芳明 陶善勇 庄学凯 WANG Wei;CHEN Jian;RONG Fangming;TAO Shanyong;ZHUANG Xuekai(School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China;Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China)

机构地区：[1]合肥工业大学机械工程学院,安徽合肥230009 [2]合肥工业大学噪声振动工程研究所,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2020年第8期1027-1031,1058,共6页Journal of Hefei University of Technology：Natural Science

基　　金：合肥工业大学产学研校企合作资助项目(W2015JSKF0392)。

摘　　要：文章采用逆子结构方法对某型轻卡方向盘怠速振动过大的问题开展了研究。将逆子结构法引入方向盘振动传递路径分析,利用该方法识别系统耦合状态下的子结构非耦合传递函数和悬置动刚度,对方向盘振动进行传递路径贡献量分析,结果表明发动机二阶激励频率与转向系统固有频率耦合是该型轻卡方向盘怠速振动过大的主要原因之一,且动力总成右后悬置X方向的贡献量最大;在分析结果的基础上提出了改进措施,改进后该型轻卡方向盘振动明显减小,验证了该改进方法的有效性。The problem of idle vibration of a light truck steering wheel is studied by using inverse sub-structure method.The inverse sub-structure method is introduced into the analysis of transfer path.The inverse sub-structure method is used to identify the uncoupled frequency response function of the sub-structure and the dynamic stiffness of the powertrain mount.The contribution of transfer path to the steering wheel vibration is analyzed.The result shows that the coupling of the second-order excitation frequency of engine and the modal frequency of steering system is one of main reasons of steering wheel vibration;the X direction of right-back powertrain mount has the largest contribution.On this basis,the improvement measures are implemented and better effect is acquired.

关 键 词：方向盘 怠速振动 模态分析 逆子结构 传递路径分析 

分 类 号：TH113.1[机械工程—机械设计及理论] U461.4[机械工程—车辆工程]