转向四连杆机构的集成优化设计

为了提高汽车操纵稳定性、安全性及减少轮胎磨损,将数值优化软件modefrontier同机械动力学仿真分析软件m sc.adam s集成,以转向梯形底角、转向臂长度、主销中心距和轴距为设计参数,传动角为约束,以转向时内轮实际转角与理论转角的误差最小为目标函数,采用模拟退火算法对转向机构进行最优化设计。计算结果表明,该集成方法和传统的设计方法相比不仅提高了分析研究的效率,而且采用的算法增大了求得全局最优解的可能性,能有效保证转向机构的运动精度和传动稳定性。

Integrated Optimization Design of Four-link Steering Mechanism

For improving the maneuver stability,safety and decreasing the tire wear,the combination of the optimization software,modefrontier and msc.adams,is applied to design the steering mechanism,with bottom angle of steering trapezoid,arm length,kingpins distance and axles distance as design parameters,transmit angle as constraint,minimum error between theoretical and practical steering angle as objective function,and simulated annealing(SA) as the optimization algorithm.The results prove the method,compared with the traditional design,not only increases the efficiency of analysis and research,but also improves the possibility of seeking the whole optimal solution,and assures the kinematics precision of steering mechanism and the transmission stability.