论文部分内容阅读
汽车转向杆系的设计对轮胎的磨损和车辆的操纵稳定性都有一定的影响。在对轿车转向杆系进行优化设计的过程中,运用位移矩阵法对MacPherson式悬架和齿轮齿条式转向系统的转向杆系进行了空间运动学分析,给出了前轴内、外轮转角关系的计算方法。综合考虑转向速比、轮胎的磨损及车辆的操纵稳定性要求提出了优化目标函数,并采用可变容差法进行求解。开发了悬架的运动分析及转向杆系的优化设计程序。运用该程序对一例实际车型进行了计算,其结果与试验值符合较好,表明该优化设计方法具有较高的准确性及一定的工程应用价值。
The design of the steering wheel system has a certain impact on tire wear and vehicle handling stability. In the course of optimizing the steering system of the car, the kinematics analysis of the steering system of the MacPherson suspension and rack and pinion steering system is carried out by using the displacement matrix method. The relationship between the rotation angles of the front axle and the outer wheels is given The calculation method. Considering the steering gear ratio, tire wear and vehicle handling stability requirements of the proposed optimization objective function, and variable tolerance method for solving. Development of the suspension of the movement analysis and steering rod system optimization design process. The program is used to calculate an actual vehicle model. The result is in good agreement with the experimental data, which shows that the optimized design method has high accuracy and certain engineering application value.