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| Research on Multi-mode Motion of the Miniature Amphibious Turtle-inspired Robot |
| XING Huiming1, LIU Chang1, GUO Shuxiang2, SHI Liwei2, LIU Wenzhi1, LI Haibo1, ZHAO Yan3 |
1. College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150001, China;
2. Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, The Ministry of Industry and Information Technology, School of Life Science, Beijing Institute of Technology, Beijing 100081, China;
3. School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China |
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Abstract A miniature amphibious turtle-inspired robot driven by a legged,multi-vectored water-jet composite driving system is proposed for scientific investigation and resource exploration in shallow shoal environment and underwater narrow space.The movement mechanism of the proposed driving system is studied,and bionic crawling and rotation gaits are designed.According to the variable structure characteristics of the proposed driving mechanism,“H”,“I”and“X”mode motion are proposed.By modeling the underwater kinematics,a three-dimensional underwater autonomous motion control method is established based on real-time dynamic thrust vector allocation and optimization mechanism.Finally,movement experiments on various terrains prove that the robot prototype has strong adaptability in unstructured shoal environment.Underwater motion control experiments verify the flexibility and feasibility of multi-mode motion.
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Received: 19 May 2021
Published: 22 March 2022
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