汽车发动机舱软管运动轨迹检测仿真系统设计

Design of a detecting and simulating system of hose movement in the automobile engine room

随着汽车产量的逐年增加以及汽车内部构造的逐渐复杂,如何优化汽车前舱内管路线束设计,以节省舱内空间成为了一个重要课题。为了解决这一问题,设计了一个软管运动轨迹检测仿真系统,该检测系统利用机器人夹持发动机总成并带动软管进行运动以模拟汽车前舱内软管运动位姿,并辅以检测设备观测采集数据,最终分析得到软管干涉情况。为建立试验中涉及的机器人、车身、测量工具等多个坐标系间的联系,设计了一套基于坐标转换的多位姿多目标归一化算法,采用试验测量与运算的方式将坐标数据统一到一个坐标系下。通过采用某车型的运动数据进行试验分析,验证了本检测系统具有较高的运动精度和较强的软管干涉检测能力,能够为汽车前舱内管路优化提供理论与试验依据。

With the increase of automobile output year by year and the increasing complexity of automobile internal structure,it has become an important project to optimize the design of the piping system in the automobile engine room for space saving.We have designed a detecting and simulating system of hose movement in the automobile engine room.The system uses a robot to clamp the engine assembly and drive the hose to move to simulate the hose movement in the automobile engine room.Detection equipment is adopted to observe and collect data,and finally the interference situation of the hose is analyzed.In order to establish the connection between the multiple coordinate systems involved in the experiment,including the robot,the car body and the measuring tools,a set of multi-position and multi-target normalization algorithm based on coordinate transformation is designed,which uses experimental measurement and calculation to unify the coordinate data into one coordinate system.Through the experimental analysis of the movement data of a certain vehicle model,it is verified that the detection system has high movement accuracy and strong hose interference detection ability,and it can provide theoretical and experimental basis for the optimization of the piping system in the automobile engine room.