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A Proprioceptive Soft Robot Module Based on Supercoiled Polymer Artificial Muscle Strings.

Yang Yang1, Honghui Zhu1, Jia Liu1

  • 1School of Automation, Nanjing University of Information Science and Technology, Nanjing 210044, China.

Polymers
|June 10, 2022
PubMed
Summary
This summary is machine-generated.

A novel multi-functional soft robot module utilizes supercoiled polymer artificial muscle (SCPAM) strings for both actuation and proprioception. This design enables versatile soft robotic applications, including crawling and grasping robots.

Keywords:
SCPAM stringsactuation–sensing integrationcrawlinggrippingproprioceptive sensingsoft robot module

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Area of Science:

  • Robotics
  • Materials Science
  • Artificial Intelligence

Background:

  • Soft robots offer advantages in safety and adaptability over rigid robots.
  • Developing integrated actuation and sensing in soft modules remains a challenge.
  • Existing soft robot designs often require complex fabrication or external sensors.

Purpose of the Study:

  • To propose a versatile, multi-functional soft robot module.
  • To integrate actuation and proprioceptive sensing within a single soft module.
  • To demonstrate the module's utility in constructing functional soft robots.

Main Methods:

  • Fabrication of a rubber-based, strip-shaped soft robot module with integrated chambers.
  • Actuation and sensing using supercoiled polymer artificial muscle (SCPAM) strings made from conductive nylon sewing threads.
  • Characterization of bending deformation via changes in SCPAM string resistance.

Main Results:

  • Successful construction of inchworm-like crawling and soft robotic gripper prototypes.
  • Demonstration of controlled crawling and grasping abilities.
  • Validation of SCPAM strings as effective actuators and resistance-based sensors for proprioception.

Conclusions:

  • The proposed soft robot module offers a unified approach to actuation and sensing.
  • SCPAM strings provide a simple and effective method for proprioception in soft robots.
  • The module's design shows promise for diverse robotic applications, including continuum arms and underwater robots.