现代制造工程 ›› 2017, Vol. 442 ›› Issue (7): 31-36.doi: 10.16731/j.cnki.1671-3133.2017.07.007

• 机器人技术 • 上一篇    下一篇

基于可测距平面的机器人误差检测方法

严宏志1,2, 江晓磊1,2, 韩奉林1,2, 张顺1,2   

  1. 1 中南大学高性能复杂制造国家重点实验室,长沙 410012;
    2 中南大学机电工程学院,长沙 410012
  • 收稿日期:2016-11-28 出版日期:2017-07-18 发布日期:2017-09-29
  • 作者简介:严宏志,教授,博士生导师,研究方向为高性能航空传动零件的制造理论与技术、高速高精数字制造理论与技术,曾获湖南省科技进步一等奖、中国高校科技进步一等奖等奖项,发表论文八十余篇。江晓磊,硕士研究生。韩奉林,讲师,博士。张顺,硕士研究生。E-mail:csujxl@csu.edu.cn
  • 基金资助:
    国家自然科学基金青年基金项目(51405518);湖南省科技计划重点项目(2015JC3007)

Robotic error measuring method based on the plane with distance measure function

Yan Hongzhi1,2, Jiang Xiaolei1,2, Han Fenglin1,2, Zhang Shun1,2   

  1. 1 State Key Laboratory of High Performance Complex Manufacturing,Central South University, Changsha 410012,China;
    2 College of Mechanical and Electrical Engineering, Central South University,Changsha 410012,China
  • Received:2016-11-28 Online:2017-07-18 Published:2017-09-29

摘要: 为了解决机器人存在本体误差而影响定位精度的问题,提出一种基于可测距平面的机器人误差检测方法。采用MDH模型来描述机器人存在误差下的运动学模型,结合距离误差模型,推导出平面上点间距误差最小约束模型方程,使用非线性最小二乘法求解方程。归纳了误差检测方法的具体实施步骤,通过仿真确定可辨识误差的参数。采用电阻式触摸屏作为测量工具,在KR5arc机器人上进行实验,误差补偿后的平面上点间距离误差显著减小,证明了基于可测距平面的机器人误差检测方法的有效性。该方法可适用于大多数工业机器人的误差检测。

关键词: 工业机器人, 误差检测, 距离误差, 电阻式触摸屏

Abstract: To improve robot positioning accuracy affected by robotic error,a robotic error measuring method based on a plane with distance measure function is proposed.Robot kinematics model existing error was expressed by Modified Denavit-Hartenberg(MDH) model.Combined with the distance error model,the distance error on the plane minimal constraint model equations was derived and nonlinear least squares method was used for solving equations.The specific implementation steps of error measuring method were summarized and identification error was determined by simulation.Resistive touch screen used as a measurement tool,the method was applied to the KR5arc robot.The experiments results show that the error decreases after compensation.The method is effective and applicable to most industrial robot error measuring.

Key words: industrial robots, error measurement, distance error, resistive touch screen

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