Variable Stiffness Improves Safety and Performance in Soft Robotics

Publication Name

Proceedings - 2023 IEEE International Conference on Mechatronics, ICM 2023

Abstract

This paper proposes a new variable stiffness soft gripper that enables high-performance grasping tasks in industrial applications. The design of the proposed monolithic soft gripper includes a middle bellow and two side bellows (i.e., fingers). The positions of the fingers are regulated by adjusting the negative pressure in the middle bellow actuator via an on-off controller. The stiffness of the soft gripper is modulated by controlling the positive pressure in the fingers through the use of a proportional air-pressure regulator. It is experimentally shown that the proposed soft gripper can modulate its stiffness by 125% within 250ms. It is also shown that the variable stiffness soft gripper can help improve the safety and performance of grasping tasks in industrial applications.

Open Access Status

This publication may be available as open access

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Link to publisher version (DOI)

http://dx.doi.org/10.1109/ICM54990.2023.10102076