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dc.contributor.authorUeda, Jun
dc.contributor.authorSecord, Thomas W.
dc.contributor.authorAsada, Harry
dc.date.accessioned2013-02-15T16:47:41Z
dc.date.available2013-02-15T16:47:41Z
dc.date.issued2010-08
dc.date.submitted2010-10
dc.identifier.issn1083-4435
dc.identifier.otherINSPEC Accession Number: 11450150
dc.identifier.urihttp://hdl.handle.net/1721.1/77147
dc.description.abstractDesign and analysis of piezoelectric actuators having over 20% effective strain using an exponential strain amplification mechanism are presented in this paper. Piezoelectric ceramic material, such as lead zirconate titanate (PZT), has large stress and bandwidth, but its extremely small strain, i.e., only 0.1%, has been a major bottleneck for broad applications. This paper presents a new strain amplification design, called a “nested rhombus” multilayer mechanism, that increases strain exponentially through its hierarchical cellular structure. This allows for over 20% effective strain. In order to design the whole actuator structure, not only the compliance of piezoelectric material but also the compliance of the amplification structures needs to be taken into account. This paper addresses how the output force and displacement are attenuated by the compliance involved in the strain amplification mechanism through kinematic and static analysis. An insightful lumped parameter model is proposed to quantify the performance degradation and facilitate design tradeoffs. A prototype-nested PZT cellular actuator that weighs only 15 g has produced 21% effective strain (2.5 mm displacement from 12-mm actuator length and 30 mm width) and 1.7 N blocking force.en_US
dc.language.isoen_US
dc.publisherInstitute of Electrical and Electronics Engineersen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/TMECH.2009.2034973en_US
dc.titleLarge effective-strain piezoelectric actuators using nested cellular architecture with exponential strain amplification mechanismsen_US
dc.typeArticleen_US
dc.identifier.citationUeda, J, T W Secord, and H H Asada. “Large Effective-Strain Piezoelectric Actuators Using Nested Cellular Architecture With Exponential Strain Amplification Mechanisms.” IEEE/ASME Transactions on Mechatronics 15.5 (2010): 770–782. Web.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.contributor.mitauthorAsada, Harry
dc.contributor.mitauthorSecord, Thomas W.
dc.relation.journalIEEE/ASME Transactions on Mechatronicsen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsUeda, J; Secord, T W; Asada, H Hen
dc.identifier.orcidhttps://orcid.org/0000-0003-3155-6223
mit.licenseOPEN_ACCESS_POLICYen_US
mit.metadata.statusComplete


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