基于对偶数矩阵的穿刺机器人建模及工作空间分析

 胡顺,毛金城,张尚盈,彭沁,韩炽

(武汉工程大学 机电工程学院,湖北 武汉 430205)
摘要:提出了一种穿刺机器人,由竖直移动关节、水平移动关节、前后移动关节、相互垂直方向上的两个旋转关节以及进针关节共同组成,六个关节实现对针尖姿态的调整,进而达到协助医生治病医疗的功能。阐明了一种基于对偶数矩阵建立运动学模型的整体步骤、方案,并针对所提出的穿刺机器人进行数学模型的建立,通过经典的D-H法进行验证,结果表明,用对偶数模型也能达到D-H法同样的结果,并进一步推测,假如建立一种对偶数运算法则函数,将极大提高运动学数值运算的速度,对于高关节数目的机械运动的计算具有一定的指导意义和参考价值。最后,在对偶数矩阵建立的模型基础上对机器人进行工作空间分析,初步证实了关节结构尺寸设计的合理性。
关键词:穿刺机器人;对偶数矩阵;蒙特卡罗法;工作空间
中图分类号:TP242 文献标志码:A doi:10.3969/j.issn.1006-0316.2019.04.014
文章编号:1006-0316 (2019) 04-0070-05
Modeling Based on Dual-Number Matricesand Workspace Analysis of Puncture Robot 
HU Shun,MAO Jincheng,ZHANG Shangying,PENG Qin,HAN Chi
( School of Mechanical and Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, China )
Abstract:A Puncture robot is proposed, which consists of a vertical moving joint, a horizontal moving joint, a front and rear moving joint, two rotating joints in the vertical direction, and a needle joint. The six joints realize the adjustment of the needle tip posture, thereby achieving the function of assisting the doctor in medical treatment. The whole step and program of establishing kinematics model based on dual-number matrices are clarified, and the mathematical model of the proposed Puncture robot is established. The classical D-H method is used to verify the results, it is shown that using the dual-number matrices can achieve the same result of using D-H method, and further speculate, if a pair of dual-number arithmetic function is built, it will greatly improve the speed of kinematic numerical operations, and it also has a guiding significance and reference price for the calculation of many numbers of joints in mechanical motion. Finally, based on the model established by the dual-number matrices, the workspace analysis of the robot is carried out, and the rationality of the joint structure design is preliminarily determined.
Key words:puncture robot;dual-number matrices;Monte Carlo method (MCM);workspace
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收稿日期:2018-11-12
作者简介:胡顺(1993-),男,湖北黄冈人,硕士研究生,主要研究方向为机器人、结构设计、运动控制;毛金城(1982-),男,湖北武汉人,博士,讲师,主要研究方向为机器人、结构设计、深度学习;张尚盈(1972-),男,湖北武汉人,博士,高级工程师、硕士研究生导师,主要研究方向为液压控制系统、电机伺服控制系统、机器人。
 

 

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