A Pneumatic Soft Quadruped Robot Based on a Bistable Actuator

被引：0
|
作者：
Li X. [1 ]
Teng Y. [1 ]
Xu Y. [1 ]
机构：
[1] College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing
来源：
Jiqiren/Robot | 2024年 / 46卷 / 03期
关键词：
biomimetic; bistable state; quadruped robot; soft actuator;
D O I：
10.13973/j.cnki.robot.230276
中图分类号：
学科分类号：
摘要：
Due to limitations in material properties and driving principles of soft robots, it is difficult to improve their motion performance and load-carrying capacity. To address this issue, a pneumatic soft quadruped robot based on a bistable actuator is proposed. Firstly, a bistable soft actuator composed of rigid links, soft actuators and springs is designed. The actuator can utilize springs for energy storage and quickly jump between two stable states under the drive of compressed air. The theoretical energy model of the actuator is derived, and the prototype is tested. The test results show that the jump motion time of the bistable soft actuator is 60∼100 ms, and the end output force is 2∼4 times that of the soft actuator under the same driving conditions. Then, a quadruped robot based on this actuator is designed, and the control scheme and motion gait of the robot are analyzed. Finally, a pneumatic control circuit is constructed to test the performance of the quadruped robot prototype. The research results demonstrate that the prototype can creep 125 mm or turn 15◦ in one motion cycle, with an average creeping speed of 158.62 mm/s (1.11 times body length/s) and a peak instantaneous speed of 396.62 mm/s (2.83 times body length/s). In addition, the robot can carry a load of 400 g, equivalent to 1.08 times its own mass, demonstrating good motion performance and load-carrying capacity. © 2024 Chinese Academy of Sciences. All rights reserved.
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页码：294 / 304
页数：10
相关论文
共 26 条
  • [21] ZHANG X J, OSEYEMI A E, MA K, Et al., Entirely soft valve leveraging snap-through instability for passive flow control, Sensors and Actuators B: Chemical, (2022)
  • [22] TANG Y C, CHI Y D, Sun J F, Et al., Leveraging elastic instabilities for amplified performance: Spine-inspired high-speed and high-force soft robots, Science Advances, 6, 19, (2020)
  • [23] LIU S., Design and control of a quadruped soft robot, (2021)
  • [24] KIM H J, SONG S H, AHN S H., A turtle-like swimming robot using a smart soft composite (SSC) structure, Smart Materials and Structures, 22, 1, (2013)
  • [25] SONG S H, KIM M S, RODRIGUE H, Et al., Turtle mimetic soft robot with two swimming gaits, Bioinspiration & Biomimetics, 11, 3, (2016)
  • [26] GUO S X, HE Y L, SHI L W, Et al., Modeling and experimental evaluation of an improved amphibious robot with compact structure, Robotics and Computer-Integrated Manufacturing, 51, pp. 37-52, (2018)
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