一种带有重心调节机构的作业型飞行机器人建模与控制

doi:10.13973/j.cnki.robot.180136

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连杰, 宋光明, 王营华, 孙慧玉, 宋爱国. 一种带有重心调节机构的作业型飞行机器人建模与控制[J]. 机器人, 2019, 41(1): 1-8.DOI: 10.13973/j.cnki.robot.180136. LIAN Jie, SONG Guangming, WANG Yinghua, SUN Huiyu, SONG Aiguo. Modeling and Control of an Aerial Manipulator with a Gravity Center Adjusting Mechanism. ROBOT, 2019, 41(1): 1-8. DOI: 10.13973/j.cnki.robot.180136.

摘要针对作业型飞行机器人完成抓取、搬运等任务时所产生的重心偏移问题，设计了一种带有重心调节机构的作业型飞行机器人，并提出了一种重心调节控制策略.该方法通过对作业装置中的机械臂进行运动学推导，动态计算出机械臂运动时复合系统重心位置的改变量，利用力矩平衡方程计算得到调节机构所需转动的角度，从而实现对复合系统重心的调节.为验证所提出控制策略的有效性，在Matlab仿真环境中，分别研究了有无重心调节控制时机械臂运动对复合系统重心轨迹和定点悬停位姿的影响.通过户外实物实验测试了飞行机器人搭载负载情况下，调节机构在定点悬停作业时的稳定效果.实验结果表明，在所述控制策略下，重心调节机构能够在飞行机器人作业过程中实时调节复合系统重心的偏移量，验证了控制策略的有效性.

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关键词 ：飞行机器人, 重心调节控制, 旋翼飞行机械臂, 空中作业, 四旋翼飞行器

Abstract：To eliminate the gravity center deviation of the aerial manipulator in grasping and transporting tasks, an aerial manipulator with a gravity center adjusting mechanism is designed and a control strategy for adjusting the gravity center is proposed. The strategy dynamically calculates the offset of gravity center of the combined system when the robotic arm moving by kinematic derivation of the robotic arm in manipulation system, and rotates the adjusting mechanism by the angles calculated according to the moment equilibrium equations to adjust the gravity center of the combined system. In order to validate the effectiveness of the proposed control strategy, simulations are performed in Matlab environment to study the influence of the robotic arm movement on the curve of gravity center of the combined system and the hovering pose with and without the gravity center adjusting control. Outdoor flights are performed to test the effectiveness of the adjusting mechanism for stabilizing the system when hovering with the payload. Experimental results demonstrate that the gravity center adjusting mechanism can adjust the offset of gravity center in real time when the aerial manipulator performs tasks with the proposed control strategy, and the effectiveness of the control strategy is validated.

Key words： aerial manipulator gravity center adjusting control rotor-flying manipulator aerial manipulation quadrotor

收稿日期: 2018-02-12 录用日期: 2018-05-09

ZTFLH:

TP24

基金资助:国家自然科学基金（61375076）

通讯作者: 宋光明,mikesong@seu.edu.cn E-mail: mikesong@seu.edu.cn

作者简介: 连杰(1991-),男,硕士生.研究领域:作业型飞行机器人建模与控制
宋光明(1974-),男,博士,教授.研究领域:分布式机器人,仿生机器人,服务机器人.

链接本文:

https://robot.sia.cn/CN/10.13973/j.cnki.robot.180136 或 https://robot.sia.cn/CN/Y2019/V41/I1/1

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