一种可变刚度的气动软体驱动器

CN116175539BActive Publication Date: 2026-07-17NORTHEAST AGRICULTURAL UNIVERSITY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEAST AGRICULTURAL UNIVERSITY
Filing Date
2023-02-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing soft robots suffer from the problem of being "more flexible than rigid," which makes it impossible to guarantee sufficient output force and pose accuracy during operation or target grasping tasks.

Method used

A variable stiffness pneumatic soft actuator was designed, including a pneumatic bending mechanism, a stiffness adjustment mechanism, and a base. The stiffness is changed by adjusting the deformation of the spring. Combined with a stroke multiplication mechanism consisting of a pneumatic hose, a radial limit ring, an annular groove, and a rope pulley system, the stiffness can be reversibly adjusted and precisely controlled.

Benefits of technology

The system achieves variable stiffness of the pneumatic soft actuator, improves output force and pose accuracy, and enhances adaptability and stability in different application scenarios.

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Abstract

一种可变刚度的气动软体驱动器,属于软体机器人领域。本发明是为了解决现有的软体机器人存在“柔有余、刚不足”的问题,导致其在操作过程中或目标抓取作业中无法保证足够的输出力和位姿精度。本发明包括气动弯曲机构、刚度调节机构和基座;所述气动弯曲机构的一端安装在基座上,气动弯曲机构包括若干个周向均匀设置的驱动气腔,刚度调节机构的固定端同轴插装在气动弯曲机构内,并处于若干个所述的驱动气腔的中心位置,刚度调节机构的驱动端安装在基座上,通过调节刚度调节机构的自身刚度来整体调节气动弯曲机构的刚度;所述的刚度调节机构包括弹簧以及用于驱动弹簧伸缩的柔性调节组件和驱动组件。本发明主要用于机械臂或者机械爪的使用。
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