针对双丝杠大行程电动推杆的动力学仿真与结构优化
毕业论文关键词 摄像机器人 抑振优化 机构预紧力 弹簧钢性
Title Kinematics simulation and structural optimization against the electrical lever with double screws and long strooke
Abstract Nowadays ， with the rapid development of social digital information, the requirements of televisions, movies and sports broadcast’s shooting will be higher and higher. So the automatic camera robots with stability and convenience start to appear. There exists an actual project called "automatic robot for Film and Telecast". the critical component of the robot is an electric lever with long stroke and double height. During the transition between first and second stage of lever, the difference between preload, resistance and working load of the drive mechanism will lead to corresponding vibration. The optimization of anti-vibration against current design is needed due to the strict demand upon vibration during the period of shooting. This treatise will research the anti-Vibration from three aspects. First, the optimization of mechanical structure. During the screw’s elevation, the relative motion between the components is likely to cause additional vibrations due to the changes of the motion status. Thus, the optimization of supporting structure can improve the system’s rigidity. Second, construct the simple model of the system. We can conduct the kinematics analysis via the simulation software mainly based on the load conditions of the components and optimize the drive mechanism’s preload and the spring’s rigidity via the results of simulation to achieve the demands of smooth transition.Finally, summarize the process of motor control, optimize the motor control and the curve of acceleration and deceleration, reduce the vibration of acceleration and deceleration. The following studies are as follows: conduct the experiment to take the actual facts of the screw’s motion into consideration, further optimization of motor curve, optimize the production and assemble of the components and system debugging
Keywords Optimization of the Anti-vibration filming robot mechanism’s rigidity spring rigidity
目次
1引言1
11虚拟演播技术及摄像机器人的起源与发展简介1