一种星球探测六足轮腿机器人的设计与运动规划

doi:10.7527/S1000-6893.2020.24244

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一种星球探测六足轮腿机器人的设计与运动规划

秦日鹏¹, 徐坤¹, 陈佳伟¹, 韩亮亮², 丁希仑¹

1. 北京航空航天大学机械工程及自动化学院, 北京 100083;
2. 上海宇航系统工程研究所, 上海 210019

收稿日期:2020-05-18 修回日期:2020-06-11 发布日期:2020-09-14
通讯作者: 丁希仑 E-mail:xlding@buaa.edu.cn
基金资助:
国家自然科学基金（51775011，91748201）；北京市自然科学基金（3192017）；上海航天科技创新基金（SAST2019-014）

Design and motion planning of wheel-legged hexapod robot for planetary exploration

QIN Ripeng¹, XU Kun¹, CHEN Jiawei¹, HAN Liangliang², DING Xilun¹

1. School of Mechanical Engineering and Automation, Beihang University, Beijing 100083, China;
2. Shanghai Aerospace System Engineering Research Institute, Shanghai 210019, China

Received:2020-05-18 Revised:2020-06-11 Published:2020-09-14
Supported by:
National Natural Science Foundation of China (51775011, 91748201); Beijing Municipal Natural Science Foundation (3192017); SAST (SAST2019-014)

摘要/Abstract

摘要： 针对星球探测，设计了一种具有高度对称性的六足轮腿机器人。为适应星球表面的复杂环境，该机器人具有不仅在机身水平面内中心对称而且关于机身水平面对称的结构，同时能够通过腿部构型的变化实现两种运动方式：轮行模式和足行模式。机器人的膝关节采用双平行四边形的传动机构，克服了现有足式机器人膝关节平行四边形机构传动的奇异问题，增加了膝关节的转动范围，实现了单腿关于机身水平面的对称运动。设计了一种基于指数坐标在SE （3）空间上规划的自适应步态，机器人可以利用该自适应步态在没有视觉传感器和局部地图的条件下，仅依靠足底力传感器和机身的惯性测量单元，实现自主连续稳定的行走。利用该机器人结构的高度对称性，提出了一种倾倒恢复策略以适应星球探测过程中的需求。以Adams和MATLAB为虚拟的仿真环境，对六足轮腿机器人的运动模式切换、自适应步态及倾倒恢复进行了仿真，验证了可行性。

关键词: 六足机器人, 轮腿复合, 运动规划, 星球探测, 自适应步态

Abstract: A wheel-legged hexapod robot with high symmetries is designed for planetary exploration. With a structure both centrosymmetric in the body horizontal plane and symmetric about its body horizontal plane, this robot can realize two modes of locomotion: wheeled mode and legged mode. In the knee joint, a double parallelogram transmission mechanism is used to avoid the singularity of the traditional parallelogram mechanism, enlarging the motion range of the knee joint. Based on the motion planning in the exponential coordinate on SE(3), an adaptive gait is designed for this wheel-legged hexapod robot. Relying on the force sensor on the feet and inertial measurement unit on the body, this robot using this adaptive gait without the visual sensor and the global map can achieve a stable and continuous walk in an unknown environment. Based on the symmetry of the hexapod robot about the body horizontal plane, the motion planning of the recovery from overturning is designed to meet the need for planetary exploration. Simulations are conducted in the Adams and MATLAB environment. The switch of locomotion modes, the adaptive gait, and the stumble recovery of the wheel-legged hexapod robot are achieved in the simulation.

Key words: hexapod robots, wheel-legged, motion planning, planetary exploration, adaptive gait

中图分类号:

秦日鹏, 徐坤, 陈佳伟, 韩亮亮, 丁希仑. 一种星球探测六足轮腿机器人的设计与运动规划[J]. 航空学报, 2021, 42(1): 524244-524244.

QIN Ripeng, XU Kun, CHEN Jiawei, HAN Liangliang, DING Xilun. Design and motion planning of wheel-legged hexapod robot for planetary exploration[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(1): 524244-524244.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

一种星球探测六足轮腿机器人的设计与运动规划

Design and motion planning of wheel-legged hexapod robot for planetary exploration

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