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Continuous adaptive gaits manipulation for three-fingered robotic hands via bioinspired fingertip contact events

Biomimetic Intelligence & Robotics 2024年第1期4卷 59-69页

作者： Xiaolong Ma Jianhua Zhang Binrui Wang Jincheng Huang Guanjun Bao College of Mechanical and Electrical Engineering China Jiliang UniversityHangzhou 310018China School of Mechanical Engineering University of Science and Technology BeijingBeijing 100083China College of Mechanical Engineering Zhejiang University of TechnologyHangzhou 310023China Key Laboratory of Special Purpose Equipment and Advanced Processing Technology Ministry of Education and Zhejiang ProvinceZhejiang University of TechnologyHangzhou 310023China

The remarkable skill of changing its grasp status and relocating its fingers to perform continuous in-hand manipulation is essential for a multifingered anthropomorphic hand.A commonly utilized method of manipulation involves a series of basic movements executed by a high-level controller.However,it remains unclear how these primitives evolve into sophisticated finger gaits during manipulation.Here,we propose an adaptive finger gait-based manipulation method that offers real-time regulation by dynamically changing the primitive interval to ensure the force/moment balance of the object.Successful manipulation relies on contact events that act as triggers for real-time online replanning of multifinger manipulation.We identify four basic motion primitives of finger gaits and create a heuristic finger gait that enables the continuous object rotation of a round cup.Our experimental results verify the effectiveness of the proposed method.Despite the constant breaking and reengaging of contact between the fingers and the object during manipulation,the robotic hand can reliably manipulate the object without failure.Even when the object is subjected to interfering forces,the proposed method demonstrates robustness in managing interference.This work has great potential for application to the dexterous operation of anthropomorphic multifingered hands.

关键词： Adaptive switch Contact event Continuous manipulation multifinger gait Primitive

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