基于Matlab的矿用汽车后悬架侧倾特性运动学分析

Kinematic Characteristics Analysis of Rear Suspension Roll Steer in Mining Truck Based on Matlab

矿用汽车后悬架采用油气悬挂缸、横向导向杆、A型架的形式。运用运动学分析方法和向量复数法,在侧倾平面内建立横向运动模型,通过数学方法求解得到后悬架不同状态下的关键点的坐标值,建立车辆后悬架侧倾运动模型,基于Matlab对各点拟合获得悬架侧倾特性,定量描述后悬架的侧倾运动规律。结果表明,横拉杆在设计过程中应尽可能按照增大长度、减小初始安装角的原则进行设计;改变悬架的刚度是调整车辆侧倾特性的最关键因素。所采用方法能够更加全面的反映运动参数变化的全过程,对于分析机构性能及合理设计具有重要的指导意义。

The rear suspension of the mining truck consists of hydro-pneumatic suspension,transverse guide bar and A-frame,The methods of kinematic analysis and complex vector are used to set up the horizontal movement model of the rear suspension in the roll-plane,and the mathematical method is used with Matlab software to obtain the coordinate function under the different conditions to quantitatively describe its motion law. The results show that the methods are used to more fully reflect the change of the motion parameters in the whole process. It is of an important significance to reasonable analysis and perfect design.