一种爬壁机器人动力学建模方法

doi:10.13700/j.bh.1001-5965.2017.0097

北京航空航天大学学报 ›› 2018, Vol. 44 ›› Issue (2): 280-285.doi: 10.13700/j.bh.1001-5965.2017.0097

一种爬壁机器人动力学建模方法

徐亚茹, 刘荣

北京航空航天大学机械工程及自动化学院, 北京 100083

收稿日期:2017-02-27 修回日期:2017-04-24 出版日期:2018-02-20 发布日期:2017-06-27
通讯作者: 刘荣,E-mail:rliu@buaa.edu.cn E-mail:rliu@buaa.edu.cn
作者简介:徐亚茹,女,博士研究生。主要研究方向:爬壁机器人动力学及控制;刘荣,男,博士,教授,博士生导师。主要研究方向:爬壁机器人、工业机器人。

An approach for dynamic modeling of climbing robot

XU Yaru, LIU Rong

School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

Received:2017-02-27 Revised:2017-04-24 Online:2018-02-20 Published:2017-06-27

摘要/Abstract

摘要： 基于Udwadia-Kalaba方程建立了双腔体吸附、轮式移动爬壁机器人的解析动力学模型。将系统的预定轨迹视为系统的约束关系，巧妙地将其融合到爬壁机器人动力学建模过程中；在不出现拉格朗日乘子的条件下，获得了满足约束所需附加力矩的解析表达式及系统的解析动力学方程；采用Baumgarte约束违约稳定法抑制了由于初始条件与约束方程不相容而导致的约束违约现象。爬壁机器人的广义坐标变量变化规律和运行轨迹的数值仿真结果证明了本文建模方法的可行性和有效性。

关键词: 爬壁机器人, 约束, 动力学建模, Udwadia-Kalaba方程, Baumgarte约束违约稳定法

Abstract: With the aim of dynamic modeling of the climbing robot with dual-cavity structure and wheeled locomotion mechanism, an analytical dynamic model based on the Udwadia-Kalaba equation is established. The desired trajectory, which is regarded as constraints imposed on the system, is integrated into the dynamic modeling process of climbing robot dexterously. The explicit expression of additional torques required to satisfy constraints and explicit dynamic equation of the system without Lagrange multiplier are obtained. However, constraint violation arises when the initial conditions are incompatible with the constraint equations. Baumgarte's constraint violation stabilization method is considered for constraint violation suppression. The simulations of the varying law of the generalized coordinate variables and the trajectories are performed to demonstrate that this modeling method is feasible and effective.

Key words: climbing robot, constraints, dynamic modeling, Udwadia-Kalaba equation, Baumgarte's constraint violation stabilization method

中图分类号:

TH113

徐亚茹, 刘荣. 一种爬壁机器人动力学建模方法[J]. 北京航空航天大学学报, 2018, 44(2): 280-285.

XU Yaru, LIU Rong. An approach for dynamic modeling of climbing robot[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2018, 44(2): 280-285.

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一种爬壁机器人动力学建模方法

An approach for dynamic modeling of climbing robot

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