New soft robots really suck: Vacuum-powered systems empower diverse capabilities

Area of Science:

• Robotics
• Materials Science
• Mechanical Engineering

Background:

• Traditional soft robots often require complex, distributed power sources.
• Integrating diverse functionalities like actuation, gripping, and adhesion into soft robots presents a significant challenge.

Purpose of the Study:

• To introduce and characterize a novel vacuum-powered soft pneumatic actuator (V-SPA) system.
• To demonstrate the V-SPA's capability to power multiple degrees of freedom (DoFs) and diverse functions from a single vacuum source.
• To explore vacuum pressure for actuation, granular media jamming, and direct suction adhesion in soft robotics.

Main Methods:

• Development of a plug-and-play 3-DoF V-SPA Module.
• Characterization of V-SPA performance.
• Integration of V-SPA modules with a continuum-style robot platform.
• Demonstration of combined vacuum-enabled capabilities for various tasks.

Main Results:

• Successful characterization of a 3-DoF V-SPA Module.
• Demonstration of integrated vacuum-powered actuation, gripping, stiffening, and adhesion.
• Successful execution of multimodal locomotion, object manipulation, and stiffness tuning tasks.
• Validation of vacuum as a singular power source for multifunctional soft robots.

Conclusions:

• V-SPAs effectively provide core soft robot capabilities, consolidating disparate subsystems.
• Vacuum power is a viable alternative for powering complex, multifunctional soft robotic systems.
• The V-SPA approach enhances compact design efficiency for advanced soft robots.