关键词: 学检测靶标, 同步带驱动, 动力学仿真, 运动精度

Abstract: Using long-span linear motion mechanism driven by synchronous belt as the linear motion mechanism for a novel three-degree-of-freedom optical testing target to meet the accuracy requirements in the large stroke and high speed conditions.The linear synchronous belt drive virtual prototype model is created using UG and RecurDyn software,and the multi-body dynamics simulation was carried out.The main factors leading to the linear motion error of the load during the linear motion and the influence of initial tension,load acceleration and mass on the linear motion error were analyzed.The results show that the motion error of the load decreases with the increase of the initial tension force,and increases with the increase of the acceleration and the mass of the load.It provides a reference for the application of the linear drive mechanism of the synchronous belt in the long distance linear motion precision machinery.

Key words: optical testing target, synchronous belt drive, dynamics simulation, motion precision