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Double-Acting Soft Actuator for Soft Robotic Hand: A Bellow Pumping and Contraction Approach
When compressing a soft bellow, the bellow will contract and pump out the fluid inside the bellow. Utilizing this property, we propose a novel actuation method called compressing bellow actuation (CBA), which can output fluidic power and tendon-driven force simultaneously. Based on the CBA method, a...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9590020/ https://www.ncbi.nlm.nih.gov/pubmed/36278728 http://dx.doi.org/10.3390/biomimetics7040171 |
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author | Liu, Hao Wu, Changchun Lin, Senyuan Li, Yunquan Chen, Yonghua |
author_facet | Liu, Hao Wu, Changchun Lin, Senyuan Li, Yunquan Chen, Yonghua |
author_sort | Liu, Hao |
collection | PubMed |
description | When compressing a soft bellow, the bellow will contract and pump out the fluid inside the bellow. Utilizing this property, we propose a novel actuation method called compressing bellow actuation (CBA), which can output fluidic power and tendon-driven force simultaneously. Based on the CBA method, a double-acting soft actuator (DASA) combining fluidic elastomer actuator (FEA) and tendon-driven metacarpophalangeal (MCP) joint is proposed for robotic finger design. The proposed DASA exhibits both compliance and adaptiveness of FEAs, and controllability and large output force of the tendon-driven methods. The fluid in the bellow can be either air or water or even integration of the two, thus constituting three different actuation modes. Mathematical modeling of the relationship between bellow compression displacement and DASA’s bending angle is developed. Furthermore, experimental characterizations of DASA’s bending angle and blocking force are conducted at different actuation modes. The double-acting method can availably promote the bending angle of an FEA by up to 155%, and the blocking force by up to 132% when the FEA is water-filled. A soft robotic hand with a forearm prototype based on the DASA fingers is fabricated for the demonstration of finger motion and gripping applications. |
format | Online Article Text |
id | pubmed-9590020 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-95900202022-10-25 Double-Acting Soft Actuator for Soft Robotic Hand: A Bellow Pumping and Contraction Approach Liu, Hao Wu, Changchun Lin, Senyuan Li, Yunquan Chen, Yonghua Biomimetics (Basel) Article When compressing a soft bellow, the bellow will contract and pump out the fluid inside the bellow. Utilizing this property, we propose a novel actuation method called compressing bellow actuation (CBA), which can output fluidic power and tendon-driven force simultaneously. Based on the CBA method, a double-acting soft actuator (DASA) combining fluidic elastomer actuator (FEA) and tendon-driven metacarpophalangeal (MCP) joint is proposed for robotic finger design. The proposed DASA exhibits both compliance and adaptiveness of FEAs, and controllability and large output force of the tendon-driven methods. The fluid in the bellow can be either air or water or even integration of the two, thus constituting three different actuation modes. Mathematical modeling of the relationship between bellow compression displacement and DASA’s bending angle is developed. Furthermore, experimental characterizations of DASA’s bending angle and blocking force are conducted at different actuation modes. The double-acting method can availably promote the bending angle of an FEA by up to 155%, and the blocking force by up to 132% when the FEA is water-filled. A soft robotic hand with a forearm prototype based on the DASA fingers is fabricated for the demonstration of finger motion and gripping applications. MDPI 2022-10-20 /pmc/articles/PMC9590020/ /pubmed/36278728 http://dx.doi.org/10.3390/biomimetics7040171 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liu, Hao Wu, Changchun Lin, Senyuan Li, Yunquan Chen, Yonghua Double-Acting Soft Actuator for Soft Robotic Hand: A Bellow Pumping and Contraction Approach |
title | Double-Acting Soft Actuator for Soft Robotic Hand: A Bellow Pumping and Contraction Approach |
title_full | Double-Acting Soft Actuator for Soft Robotic Hand: A Bellow Pumping and Contraction Approach |
title_fullStr | Double-Acting Soft Actuator for Soft Robotic Hand: A Bellow Pumping and Contraction Approach |
title_full_unstemmed | Double-Acting Soft Actuator for Soft Robotic Hand: A Bellow Pumping and Contraction Approach |
title_short | Double-Acting Soft Actuator for Soft Robotic Hand: A Bellow Pumping and Contraction Approach |
title_sort | double-acting soft actuator for soft robotic hand: a bellow pumping and contraction approach |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9590020/ https://www.ncbi.nlm.nih.gov/pubmed/36278728 http://dx.doi.org/10.3390/biomimetics7040171 |
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