基于蒙特卡罗方法的汽车双前桥转向机构稳健分析

Robust Analysis on Double-front-axle Steering Mechanism based on Monte Carlo Method

应用蒙特卡罗方法对某重型汽车双前桥六杆转向机构进行了稳健性能分析。以前、后桥转向梯形机构转角以及中间摇臂转角误差最小为优化目标,以转向梯形机构、中间摇臂的13个结构参数为设计变量,以各机构的转角误差、尺寸限制等为约束条件建立双前桥转向机构数学模型;应用蒙特卡罗方法分析了采用确定性优化方法所得结果的稳健性能。

Robustness on double-front-axle steering mechanism of a heavy truck is analyzed with Monte Carlo method. The optimum objectives are the minimum steering angle error of each steering trapezoid mechanism and middle connection mechanism. The design variables are the structure parameters of 13 on steering trapezoid mechanism and middle connection mechanism. The constraint condition is steering angle error and dimension limit constrain. Secondly, the result robustness attained by certainty optimum method is analyzed with Monte Carlo method.