Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

A Pneumatic Particle-Blocking Variable-Stiffness Actuator

Version 1 : Received: 15 November 2023 / Approved: 16 November 2023 / Online: 16 November 2023 (07:44:59 CET)
Version 2 : Received: 13 December 2023 / Approved: 14 December 2023 / Online: 14 December 2023 (05:49:51 CET)

A peer-reviewed article of this Preprint also exists.

Peng, H.; Wang, X.; Geng, D.; Xu, W. A Pneumatic Particle-Blocking Variable-Stiffness Actuator. Sensors 2023, 23, 9817. Peng, H.; Wang, X.; Geng, D.; Xu, W. A Pneumatic Particle-Blocking Variable-Stiffness Actuator. Sensors 2023, 23, 9817.

Abstract

In order to improve the stiffness of the flexible robot,this paper proposes a variable-stiffness elastic actuator to improve the rigidity of flexible robots. The actuator integrates the working principles of a pneumatic drive, wedge structure, and particle blockage. the tensile stiffness of the actuator is nonlinearly negatively correlated with the air pressure because of the structural and material properties.The compressive stiffness and lateral stiffness increases nonlinearly as air pressure increases, being 3and 121 times greater at 0.17 MPa compared to 0 MPa, respectively. Beyond 0.17 MPa, the two stiffness of the actuator experiences incremental growth due to wedge impedance forces.

Keywords

variable-stiffness; pneumatic actuation; elastic actuator; flexible robot

Subject

Engineering, Mechanical Engineering

Comments (1)

Comment 1
Received: 14 December 2023
Commenter: He peng
Commenter's Conflict of Interests: Author
Comment: The title has been changed and some research content has been expanded
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