Special Issue "Pneumatic Soft Actuators"

A special issue of Actuators (ISSN 2076-0825).

Deadline for manuscript submissions: 31 October 2020.

Special Issue Editor

Dr. Steve Davis
Website
Guest Editor
School of Computing, Science & Engineering, University of Salford, Greater Manchester M5 4WT, UK
Interests: soft robotics; pneumatic muscles; end effectors; automation for food; healthcare robotics
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

Soft robotics is a relatively new field which has seen a significant increase in interested over the last 5–10 years. It is a novel approach that investigates unconventional elastic materials, taking advantage of the intrinsic dynamics of deformable materials to enhance flexibility and controllability. This technology has the potential to revolutionise the robotics field, as it provides many benefits, including low cost, light weight, intrinsic safety, and the ability to deform to objects and obstacles. Traditional electric, pneumatic, and hydraulic actuators are not well suited to this new field, and as a result, many new actuators have been proposed. Due to their inherent compliance, pneumatic actuators have proven popular in soft robotic systems; therefore, this Special Issue targets high-quality publications spanning (but not limited to) the following topics:

  • The design of novel pneumatic soft actuators;
  • The control of soft pneumatic systems;
  • Pneumatic artificial muscles;
  • Compliant pneumatic actuation;
  • Modelling of soft pneumatic actuators;
  • The application of pneumatic soft actuation.

Dr. Steve Davis
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Actuators is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Soft robotics
  • Pneumatic actuators
  • Compliant actuation
  • Pneumatic muscles
  • Pneumatic soft actuators

Published Papers (5 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Jump to: Review, Other

Open AccessArticle
Self-Healing and High Interfacial Strength in Multi-Material Soft Pneumatic Robots via Reversible Diels–Alder Bonds
Actuators 2020, 9(2), 34; https://doi.org/10.3390/act9020034 - 30 Apr 2020
Abstract
In new-generation soft robots, the actuation performance can be increased by using multiple materials in the actuator designs. However, the lifetime of these actuators is often limited due to failure that occurs at the weak multi-material interfaces that rely almost entirely on physical [...] Read more.
In new-generation soft robots, the actuation performance can be increased by using multiple materials in the actuator designs. However, the lifetime of these actuators is often limited due to failure that occurs at the weak multi-material interfaces that rely almost entirely on physical interactions and where stress concentration appears during actuation. This paper proposes to develop soft pneumatic actuators out of multiple Diels–Alder polymers that can generate strong covalent bonds at the multi-material interface by means of a heat–cool cycle. Through tensile testing it is proven that high interfacial strength can be obtained between two merged Diels–Alder polymers. This merging principle is exploited in the manufacturing of multi-material bending soft pneumatic actuators in which interfaces are no longer the weakest links. The applicability of the actuators is illustrated by their operation in a soft hand and a soft gripper demonstrator. In addition, the use of Diels–Alder polymers incorporates healability in bending actuators. It is experimentally illustrated that full recovery of severe damage can be obtained by subjecting the multi-material actuators to a healing cycle. Full article
(This article belongs to the Special Issue Pneumatic Soft Actuators)
Show Figures

Graphical abstract

Open AccessArticle
The Design, Kinematics and Torque Analysis of the Self-Bending Soft Contraction Actuator
Actuators 2020, 9(2), 33; https://doi.org/10.3390/act9020033 - 29 Apr 2020
Abstract
This article presents the development of a self-bending contraction actuator (SBCA) through the analysis of its structure, kinematics, and torque formulas, and then explores its applications. The proposed actuator has been fabricated by two methods to prove the efficiency of the human body [...] Read more.
This article presents the development of a self-bending contraction actuator (SBCA) through the analysis of its structure, kinematics, and torque formulas, and then explores its applications. The proposed actuator has been fabricated by two methods to prove the efficiency of the human body inspiration, which represents the covering of human bones by soft tissues to protect the bone and give the soft texture. The SBCA provides bending behaviour along with a high force-to-weight ratio. As with the simple pneumatic muscle actuator (PMA), the SBCA is soft and easy to implement. Both the kinematics and the torque formula presented for the SBCA are scalable and can be used with different actuator sizes. The bending actuator has been tested under an air pressure of up to 500 kPa, and the behaviour of its bending angle, parameters, dimensions, and the bending torques have been illustrated. On the other hand, the experiments showed the efficient performances of the actuator and validate the proposed kinematics. Therefore, the actuator can be used in many different applications, such as soft grippers and continuum arms. Full article
(This article belongs to the Special Issue Pneumatic Soft Actuators)
Show Figures

Graphical abstract

Open AccessArticle
A Crawling Soft Robot Driven by Pneumatic Foldable Actuators Based on Miura-Ori
Actuators 2020, 9(2), 26; https://doi.org/10.3390/act9020026 - 09 Apr 2020
Abstract
Origami structures are highly demanded for engineering applications. Using origami folding to design and actuate mechanisms and machines offers attractive opportunities. In this paper, we design a crawling robot driven by pneumatic foldable actuators (PFAs) based on Miura-ori, according to the parallel foldable [...] Read more.
Origami structures are highly demanded for engineering applications. Using origami folding to design and actuate mechanisms and machines offers attractive opportunities. In this paper, we design a crawling robot driven by pneumatic foldable actuators (PFAs) based on Miura-ori, according to the parallel foldable structure and different control patterns, which can perform different movements. The PFA inspired from Miura-ori is composed of a folding part, transition part, and sealing part, made by flexible materials and a paper skeleton. This actuator can obtain a large deformation by folding under negative pressure due to its own characteristics, and the relationship between deformation and pressure is analyzed. According to the different folding and unfolding times of left and right actuators, the crawling robot can perform both linear and turning movements. The speed of the robot is about 5 mm/s and it can turn at a speed of about 15°/s. The crawling robot uses the ability of the foldable structure to cope with the challenges of different environments and tasks. Full article
(This article belongs to the Special Issue Pneumatic Soft Actuators)
Show Figures

Figure 1

Review

Jump to: Research, Other

Open AccessReview
Soft Robotics: A Review of Recent Developments of Pneumatic Soft Actuators
Actuators 2020, 9(1), 3; https://doi.org/10.3390/act9010003 - 10 Jan 2020
Abstract
This paper focuses on the recent development of soft pneumatic actuators for soft robotics over the past few years, concentrating on the following four categories: control systems, material and construction, modeling, and sensors. This review work seeks to provide an accelerated entrance to [...] Read more.
This paper focuses on the recent development of soft pneumatic actuators for soft robotics over the past few years, concentrating on the following four categories: control systems, material and construction, modeling, and sensors. This review work seeks to provide an accelerated entrance to new researchers in the field to encourage research and innovation. Advances in methods to accurately model soft robotic actuators have been researched, optimizing and making numerous soft robotic designs applicable to medical, manufacturing, and electronics applications. Multi-material 3D printed and fiber optic soft pneumatic actuators have been developed, which will allow for more accurate positioning and tactile feedback for soft robotic systems. Also, a variety of research teams have made improvements to soft robot control systems to utilize soft pneumatic actuators to allow for operations to move more effectively. This review work provides an accessible repository of recent information and comparisons between similar works. Future issues facing soft robotic actuators include portable and flexible power supplies, circuit boards, and drive components. Full article
(This article belongs to the Special Issue Pneumatic Soft Actuators)
Show Figures

Figure 1

Other

Jump to: Research, Review

Open AccessPerspective
Recycling-Oriented Design in Soft Robotics
Actuators 2019, 8(3), 62; https://doi.org/10.3390/act8030062 - 12 Aug 2019
Abstract
Soft robotics is a novel approach in the field of robotics. Soft robots or soft actuators are typically polymer-based and are characterized by their flexibility and adaptability, which brings new far-reaching applications. Soft robotics is currently at the peak of its research. One [...] Read more.
Soft robotics is a novel approach in the field of robotics. Soft robots or soft actuators are typically polymer-based and are characterized by their flexibility and adaptability, which brings new far-reaching applications. Soft robotics is currently at the peak of its research. One circumstance that is also present in this age is constant climate change; there is a demand for sustainability. This goes hand in hand with the design of products that are suitable for recycling. Today, more is expected of an engineer than just function-oriented design. This article looks at soft robotics from the point of view of sustainability. Since nature operates in cycles, the aim is to design products in such a way that they can be introduced into cycles. Three recycling cycles for products can be distinguished, which take place during production, during product use, and after product life. Within the framework of this work, special design measures are reviewed for fluidic elastomer actuators—a characteristic type of soft actuators—so that they can be integrated into the recycling process. Full article
(This article belongs to the Special Issue Pneumatic Soft Actuators)
Show Figures

Figure 1

Back to TopTop