The Staircase Drive—A Novel Actuator Design Optimised for Daisy-Chaining and Minimum Stress Load Coupling

This work presents a novel type of actuator that improves over the standard cantilever by permitting daisy-chaining while minimising stress to the joint connecting to the load. A detailed structural and functional comparison of the proposed device against the cantilever actuator as a baseline is giv...

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Autores principales:	Falk-Martin Hoffmann, Keith R. Holland, Nick R. Harris, Neil M. White, Filippo Maria Fazi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	actuator piezoelectric MEMS Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/d271ac98b06b42d1ac65260860cfaff6
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spelling	oai:doaj.org-article:d271ac98b06b42d1ac65260860cfaff62021-11-25T18:58:56ZThe Staircase Drive—A Novel Actuator Design Optimised for Daisy-Chaining and Minimum Stress Load Coupling10.3390/s212277401424-8220https://doaj.org/article/d271ac98b06b42d1ac65260860cfaff62021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7740https://doaj.org/toc/1424-8220This work presents a novel type of actuator that improves over the standard cantilever by permitting daisy-chaining while minimising stress to the joint connecting to the load. A detailed structural and functional comparison of the proposed device against the cantilever actuator as a baseline is given, led by a brief revision of the cantilever actuator as the state-of-the-art that highlights its limitations with respect to daisy-chaining and the stress it inherently creates within the joint connecting to the load when attempting out-of-plane displacement without rotation. Simulations of both devices’ performance confirm that the newly proposed device yields the targeted displacement profile that both enables the daisy-chaining of such a device into a higher-order actuator for increased displacement and reduce stress in the joint with the load. This comes at the cost of reduced maximum displacement compared to the cantilever, which can be overcome by daisy-chaining. The proposed device’s performance is further evaluated on the basis of manufactured prototypes measured by means of a laser scanning vibrometer. The prototype was manufactured on a 150 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m alumina substrate, and both electrodes and piezoelectric layer were deposited in a thick-film printing process.Falk-Martin HoffmannKeith R. HollandNick R. HarrisNeil M. WhiteFilippo Maria FaziMDPI AGarticleactuatorpiezoelectricMEMSChemical technologyTP1-1185ENSensors, Vol 21, Iss 7740, p 7740 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	actuator piezoelectric MEMS Chemical technology TP1-1185
spellingShingle	actuator piezoelectric MEMS Chemical technology TP1-1185 Falk-Martin Hoffmann Keith R. Holland Nick R. Harris Neil M. White Filippo Maria Fazi The Staircase Drive—A Novel Actuator Design Optimised for Daisy-Chaining and Minimum Stress Load Coupling
description	This work presents a novel type of actuator that improves over the standard cantilever by permitting daisy-chaining while minimising stress to the joint connecting to the load. A detailed structural and functional comparison of the proposed device against the cantilever actuator as a baseline is given, led by a brief revision of the cantilever actuator as the state-of-the-art that highlights its limitations with respect to daisy-chaining and the stress it inherently creates within the joint connecting to the load when attempting out-of-plane displacement without rotation. Simulations of both devices’ performance confirm that the newly proposed device yields the targeted displacement profile that both enables the daisy-chaining of such a device into a higher-order actuator for increased displacement and reduce stress in the joint with the load. This comes at the cost of reduced maximum displacement compared to the cantilever, which can be overcome by daisy-chaining. The proposed device’s performance is further evaluated on the basis of manufactured prototypes measured by means of a laser scanning vibrometer. The prototype was manufactured on a 150 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m alumina substrate, and both electrodes and piezoelectric layer were deposited in a thick-film printing process.
format	article
author	Falk-Martin Hoffmann Keith R. Holland Nick R. Harris Neil M. White Filippo Maria Fazi
author_facet	Falk-Martin Hoffmann Keith R. Holland Nick R. Harris Neil M. White Filippo Maria Fazi
author_sort	Falk-Martin Hoffmann
title	The Staircase Drive—A Novel Actuator Design Optimised for Daisy-Chaining and Minimum Stress Load Coupling
title_short	The Staircase Drive—A Novel Actuator Design Optimised for Daisy-Chaining and Minimum Stress Load Coupling
title_full	The Staircase Drive—A Novel Actuator Design Optimised for Daisy-Chaining and Minimum Stress Load Coupling
title_fullStr	The Staircase Drive—A Novel Actuator Design Optimised for Daisy-Chaining and Minimum Stress Load Coupling
title_full_unstemmed	The Staircase Drive—A Novel Actuator Design Optimised for Daisy-Chaining and Minimum Stress Load Coupling
title_sort	staircase drive—a novel actuator design optimised for daisy-chaining and minimum stress load coupling
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d271ac98b06b42d1ac65260860cfaff6
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The Staircase Drive—A Novel Actuator Design Optimised for Daisy-Chaining and Minimum Stress Load Coupling

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