基于DOE的多轴转向系统灵敏度分析

Sensitivity Analysis of Multi-axle Steering System Based on DOE

多轴转向系统采用转向臂与拉杆传递空间运动,各轴间转向车轮转角关系受一系列铰点位置影响。通过试验设计(Design of Experiment,DOE),建立转向系统动力学仿真模型,分析转向系统中各铰点在传递转向运动关系中的灵敏度。结果表明,边拉杆与梯形臂铰点垂向位置、摆臂横拉杆铰点横向位置、侧拉杆铰点横向位置、垂臂纵拉杆铰点垂向位置对转向系统运动关系有显著影响,为多轴转向系统设计与优化提供了依据。

The multi-axle steering system adopts the steering arm and the pull rod to transmit the space motion, and the steering wheel rotation angle between the two axes is influenced by a series of hinge positions. In this paper, based on the design of experiment, the dynamic simulation model of the steering system was established, and the sensitivity of the hinge points in the steering system was analyzed. The analysis results show that the vertical position of the hinge point between the side pull rod and trapezoidal arm, the horizontal position of the swing arm tie rod joint, the lateral position of the side rod hinge point and the vertical position of hinge point at the pitman arm longitudinal rod have significant effects on the steering system motion. The paper provides a basis for multi-axle steering system design and optimization.