中国机械工程 ›› 2014, Vol. 25 ›› Issue (15): 2080-2085.

• 智能制造 • 上一篇    下一篇

非惯性系下弹性欠驱动机器人动力学建模及应用

耿明超1,2;赵铁石1,2;赵飞1,2;刘晓1,2;苑飞虎1,2   

  1. 1.燕山大学河北省并联机器人与机电系统实验室,秦皇岛,066004
    2.燕山大学先进锻压成形技术与科学教育部重点实验室,秦皇岛,066004
  • 出版日期:2014-08-10 发布日期:2014-08-13
  • 基金资助:
    国家自然科学基金资助项目(51375240,50975244)

Dynamics Model of Elastic Underacutated Robot in a Non-inertial Frame and Its Applicaitons

Geng Mingchao1,2;Zhao Tieshi1,2;Zhao Fei1,2;Liu Xiao1,2;Yuan Feihu1,2   

  1. 1.Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System, Yanshan University, Qinhuangdao, Hebei, 066004
    2.Key Laboratory of Advanced Forging & Stamping Technology and Science of Ministry of Education of China, Yanshan University, Qinhuangdao,Hebei,066004
  • Online:2014-08-10 Published:2014-08-13
  • Supported by:
    National Natural Science Foundation of China(No. 51375240,50975244)

摘要:

以旋量为基本运算单元,建立了非惯性系下弹性欠驱动机器人的动力学模型。首先以两个旋量的李括弧运算为基础,得到了惯性系下机器人的加速度映射关系。利用多刚体系统的速度、加速度旋量在不同坐标系之间的变换,推导出非惯性系下机器人在惯性系中的加速度映射关系。然后利用刚体的牛顿-欧拉公式,建立了非惯性系下机器人的动力学模型。推导的过程中始终以运动旋量、力旋量为基本的运算单元,简化了动力学建模过程。最后,以空中加油系统这种典型的非惯性系下的弹性欠驱动的应用为例,建立了其在非惯性系下的动力学模型,并用动力学仿真软件进行了验证,验证了理论分析的正确性和可行性。

关键词: 弹性欠驱动, 旋量, 动力学, 非惯性系

Abstract:

A dynamics model of elastic underacutated robot in a non-inertial frame was established based on screws. Firstly, the acceleration mapping of robot which was in inertia frame was obtained referring to the Lie bracket of two screws. The acceleration mapping in a non-inertia frame was deducted through the transformation of the rigid-body velocity and acceleration in different frames. Then the dynamics model of robot in a non-inertia frame was obtained using the rigid-body Newton-Euler equation. The dynamics model is simple because of the use of the twist and wrench in the process of derivation. Finally, the aerial refueling system, which was a typical application of an elastic underactuated robot in a non-inertia frame, was taken as an example. The dynamics model of the system was presented, and was verified by dynamics simulation software, which demonstrates the correctness and feasibility of the theoretical analysis.

Key words: elastic underactuated;screw;dynamics;non-inertia , frame

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