基于偏好函数法车辆转向机构稳健性设计  

Robust Design of Steering Mechanism of Truck Based on Preference Function Method

作　　者：冯乐雯[1] 孙国君[1] 冯新华[2] 

机构地区：[1]兰州石化职业技术学院,甘肃兰州730060 [2]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《机械设计与制造》2017年第3期268-272,共5页Machinery Design & Manufacture

基　　金：甘肃省自然科学基金(3ZS111-A26-030)

摘　　要：经典稳健设计未考虑质量属性不确定性的影响,而对比质量属性偏好的选择对产品稳健性具有重要影响,针对以上问题,选取车辆的转向横拉杆、定位参数及转向梯形机构为研究对象,采用偏好函数法建立的保质设计模型,对产品的稳健性进行分析。以实际的设计经验公式设定个体性能的偏好,选取不同工况包括直线、转向、车轮跳动等轮距、转角误差、车轮摆角等最小为优化设计的目标,搭建定位参数-转向机构的稳健设计模型,在保证车辆轮胎磨损较小且具有良好操纵稳定性的前提下,分析各类不确定质量因素对产品稳健性能的影响。单目标与多目标、不同分析方法结果对比验证了偏好函数法分析结果的可靠性,为同类研究提供参考。The classical robust design does not consider the impact of quality attributes, while the choice of quality attributes preference has an important influence on product robustness. In order to solve the above problem, the vehicle＇s steering cross tie rod, the pasitioning parameters and the steering trapezoid mechanism are studied. The design model of the quality and the stability of the product was established by the preference function method. The preference of individual performance was set with the actual design experience, the as the optimization objective In a straight line driving condition, the track changes minimum, and the parameters were choose as optimization objective, which in the steering process, the rotation error minimum and wheel hop during wheel angle minimum. Optimization objective. The robust design model of the positioning parameters - steering mechanism was built. Under the premise that ensuring the vehicle tire wear was small and had good stability, all kinds of uncertain factors that influence on the robust performance of the product quality were analysis. The results of single objective and multiple objective and different analysis methods are compared with the results of the preference function method, which provides reference for the similar research.

关 键 词：质量属性 不确定 偏好函数 转向机构 稳健设计 

分 类 号：TH16[机械工程—机械制造及自动化] TH122