纯电动高空作业车操纵稳定性优化设计

Optimization design for the electric vehicle highaltitude working vehicle based on ADAMS/Car

以某款加装液压升降平台改装而成的纯电动高空作业车为研究对象,通过仿真试验对其操纵稳定性进行研究并提出改进方案。运用ADAMS/Car仿真软件搭建整车仿真模型,进行稳态回转试验、转向盘角阶跃试验和转向盘角脉冲输入试验,仿真结果表明加装液压升降平台后汽车操纵稳定性明显下降。改变质心位置、悬架刚度和轮胎侧偏刚度三方面,提出高空作业车操纵稳定性改进方案。仿真试验表明,高空作业车质心位置前移或质心位置下移,适当减小前悬架刚度或增加后悬架刚度,增加后轮轮胎侧偏刚度,能够较好地提高高空作业车的操纵稳定性。

A electric high-altitude working vehicle which modified with a hydraulic lifting platform is taken as the research object.The design scheme of improving its maneuverability stability is put forward through simulation test.Using ADAMS/Car simulation software to build the vehicle simulation model,steady static circular test,steering wheel angle step test and steering wheel angle pulse input test are carried out.The simulation results show that the vehicle handling stability decreases obviously after installing the hydraulic lifting platform.Improved scheme for handling stability of high-altitude working vehicle is proposed from the three aspects of changing the position of the center of mass,suspension stiffness and tire lateral stiffness.Simulation results show that moves forward or down the position of the center of mass of the high-altitude working vehicle,appropriately reduce the stiffness of the front suspension or increase the stiffness of the rear suspension,and increase the lateral stiffness of the rear tire can improve the handling stability for the high-altitude working vehicle.