绿篱苗木修剪机械手运动学分析及仿真  

Kinematic simulation and analysis of hedge trimmer manipulator

作　　者：韦锦[1] 蒙艳玫[2] 董振[2] 区冰华[2] 陈庆伟[2] 

机构地区：[1]广西大学行健文理学院,广西南宁530005 [2]广西大学机械工程学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2015年第3期622-628,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：科技部科技型中小企业技术创新基金项目(11C26214505595);广西科技攻关项目(桂科攻1103052);南宁市科技攻关项目(2010003007A)

摘　　要：针对人工对绿篱进行修剪造型时存在的效率低、劳动强度大的缺点,提出了一种能够对绿篱苗木进行几何造型的六自由度绿篱苗木修剪机械手,并通过D-H矩阵理论对修剪机械手的运动学正、逆解进行求解。此外,基于Pro/E与ADAMS的联合仿真技术对机械手进行三维建模及圆球造型的仿真。仿真结果表明刀具运动轨迹与预定的理论轨迹重合,证实了运动学方程的正确性,也说明了机械手进行几何造型修剪的可行性。仿真过程中腰关节、肩关节、肘关节、小臂转动关节、腕部回转关节及腕关节的最大角加速度分别为3.8°/s2、7.2°/s2、2.3°/s2、6.7°/s2、10.4°/s2及3.7°/s2,数值较小,说明机械手运行平稳。通过对修剪机械手建立运动学方程以及仿真分析,可以得到其运动规律及动力参数,为实际样机的研制奠定理论基础。A hedge trimmer manipulator with six degrees of freedom is designed for hedge shaping to take over the laborious and time-consuming process for trimming by hand. The forward and inverse kinematics equations of this hedge trimmer manipulator with six degree of freedom were deduced based on D-H matrix theory. 3D models were established and the progress of ball cutting was simula-ted based on the joint simulation method of Pro/E and ADAMS. The overlap between simulation trajectory and theoretical trajectory proved the correctness of the kinematic equations of the hedge trimmer manipulator and showed feasibility of geometry modeling and hedge modeling by the hedge trimmer manipulator. Within the simulation process, the every maximal angular acceleration were 3. 8＆#176;/s2 , 7. 2＆#176;/s2 , 2. 3＆#176;/s2 , 6. 7＆#176;/s2 , 10. 4＆#176;/s2 and 3. 7＆#176;/s2 respectively. These small angular ac-celeration demonstrated that the manipulator can complete the lifting work smoothly. After getting trimmer manipulator＆#39;s movement patterns and dynamic parameters from kinematics equations and simulation analysis, the theoretical foundation of the physical prototype was established.

关 键 词：绿篱 修剪 机械手 运动学分析 运动学仿真 

分 类 号：TP241.3[自动化与计算机技术—检测技术与自动化装置]