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Phone May Khin1, Jin Huat Low2, Marcelo H Ang3
1Department of Biomedical Engineering, National University of Singapore, Singapore 117583, Singapore. biekpm@nus.edu.sg.
Researchers developed novel fabric-based soft robotic modules, including inflatable beams (IB) and rotary actuators (FRA). These modules enable the construction of adaptable pneumatic structures for assistive applications.
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Area of Science:
- Robotics
- Materials Science
- Mechanical Engineering
Background:
- Soft robotics offers advantages in adaptability and safety over rigid systems.
- Fabric-based actuators provide lightweight and flexible solutions for robotic applications.
- Pneumatic actuation is a common method for powering soft robotic devices.
Purpose of the Study:
- To present novel fabric-based soft robotic modules: inflatable beam (IB) and fabric-based rotary actuator (FRA).
- To explore the integration of IB and FRA modules for creating versatile pneumatic structures.
- To demonstrate the potential of these modules in developing assistive robotic devices.
Main Methods:
- Design and fabrication of origami-inspired V-pleated FRA modules for angular displacement.
- Investigation of different rotary joint designs for connecting FRA and IB modules.
- Implementation of a state transition-based position control system for pneumatic actuation.
- Assembly of a soft robotic limb with an end effector using IB and FRA modules.
Main Results:
- The FRA module effectively generates angular displacement upon pressurization.
- Varying rotary joint designs allows for diverse ranges of motion in assembled modules.
- The control system successfully regulates module movement through pneumatic pressurization.
- A functional soft robotic limb with grasping capabilities was constructed.
Conclusions:
- Fabric-based soft robotic modules (IB and FRA) offer a versatile platform for building complex pneumatic structures.
- The developed modules and control system show promise for creating assistive robotic devices, such as a wheelchair-attachable limb.
- This work contributes to the advancement of soft robotics for practical applications, particularly in aiding individuals with disabilities.

