一种驱动集中布置的人形机器人绳驱下肢系统

By driving a centrally arranged cable-driven lower limb system for humanoid robots, the problems of lower center of gravity shift, large inertia, power density and weight contradiction, and insufficient compliance of existing humanoid robot lower limb systems are solved. This achieves the effects of shifting the center of gravity upward, reducing mass and enhancing flexibility, and adapting to a wide range of movements.

CN122232771BActive Publication Date: 2026-07-17TIANJIN UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN UNIV
Filing Date
2026-05-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing humanoid robot lower limb systems suffer from problems such as a downward shift in the center of mass, high inertia, a contradiction between power density and weight, insufficient compliance, and limited biomimicry, making it difficult to achieve flexible movement in real-world scenarios.

Method used

The humanoid robot adopts a cable-driven lower limb system with centralized drive arrangement. Through cable drive transmission of hip, knee and ankle joints, electromechanical separation and center of gravity shift are achieved. Rolling joints and moving pulley groups are used to achieve tension amplification and constant stiffness characteristics. Combined with Bowden cable tube flexible connection, the joint flexibility and safety are enhanced.

Benefits of technology

It achieves a concentrated center of gravity, reduced mass, reduced inertia, and enhanced flexibility, improving the robot's safety and mobility in complex environments. It also possesses constant torque and constant stiffness characteristics, adapting to the motion requirements of a wide range of workspaces.

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Abstract

本发明公开了一种驱动集中布置的人形机器人绳驱下肢系统,属于机器人技术领域。该系统包括仿骨盆结构、髋关节、大腿、膝关节、小腿、踝关节和脚掌,关节模组集中布置于仿骨盆基座上部,通过鲍登线管和钢丝绳向膝关节和踝关节传递驱动力,髋关节采用三自由度串联构型实现三向姿态转动;膝关节为张力放大恒刚度绳驱关节,通过滚动关节构型与动滑轮组实现六倍张力放大和三十六倍刚度系数放大;踝关节为二自由度绳驱差动机构,通过钢丝绳差动驱动实现背屈跖屈和内翻外翻运动。本发明实现了下肢系统的机电分离和重心上移,减轻了摆动段质量和惯量,具备恒扭矩恒刚度输出和柔性安全交互特性。
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