新型铰接转向机构参数优化设计

该文介绍了一种新型的铰接转向机构，采用特殊的双摇杆转向型式，以采用此转向机构的某重载车辆为研究对象，利用CAE软件ADAMS，建立了机构铰点参数化的虚拟样机，采用Design study方法，得出转向机构参数性能的变化情况以及设计参数的近似敏感度，得到关联度最大铰点。采用OPTDES-SQP优化模型，设置目标函数，建立了以综合转向性能最优为优化目标的优化设计模型。经过优化，转向力臂差变化比率为﹣74.6%，转向角度增加+2.22%，通过实际应用，减小了转向过程转向液压系统的振动和冲击，增加了系统转向稳定性，取得了良好的效果，为该转向系统的控制与操作提供了必要的依据。

Optimization of Parameter Design of New Articulated Steering Mechanism

A new articulated steering mechanism that adopts a special dual-joystick and its structural type are introduced. An articulated steering mechanism of heavy vehicle is used as a certain study object, and the virtual prototype of the steering mechanism hinge point parameters is set up by the CAE software. With the “design study” method, the changes of the steering performance parameters and the design variable of the approximate sensitivity are obtained, and so are the hinge points with the greatest relevance. By using OPTDES-SQP optimization model and hereafter setting the objective function, the optimization design model whose optimization objective is set as the comprehensive steering performance optimal, is established. After optimization, the change rate of arm difference is -74.6%, and the increase of steering angle is +2.22%. Through the practical application, in the process of steering, the vibration and shock of steering hydraulic steering system is reduced, and the stability of the system is increased. With these good results achieved, the necessary basis can be provided for the control and operation of articulated steering system.