Show simple item record

dc.contributor.authorUeda, Junen_US
dc.contributor.authorSecord, Thomas W.en_US
dc.contributor.authorAsada, H. Harryen_US
dc.date.accessioned2012-01-27T21:12:31Z
dc.date.available2012-01-27T21:12:31Z
dc.date.issued2010-10
dc.identifier.citationJun Ueda, Thomas Secord, Harry Asada, "Large Effective-Strain Piezoelectric Actuators Using Nested Cellular Architecture with Exponential Strain Amplification Mechanisms," IEEE/ASME Transactions on Mechatronics, Vol. 15, No. 5, pp. 770-782, 2010en_US
dc.identifier.issn1083-4435
dc.identifier.urihttp://hdl.handle.net/1853/42282
dc.description©2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.en_US
dc.descriptionDOI: 10.1109/TMECH.2009.2034973en_US
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_USen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectActuatorsen_US
dc.subjectFflexible structuresen_US
dc.subjectPiezoelectric transducersen_US
dc.titleLarge Effective-Strain Piezoelectric Actuators Using Nested Cellular Architecture with Exponential Strain Amplification Mechanismsen_US
dc.typeArticleen_US
dc.contributor.corporatenameGeorgia Institute of Technology. Center for Robotics and Intelligent Machinesen_US
dc.contributor.corporatenameGeorgia Institute of Technology. School of Mechanical Engineeringen_US
dc.contributor.corporatenameMassachusetts Institute of Technology. Dept. of Mechanical Engineeringen_US
dc.contributor.corporatenameMassachusetts Institute of Technology. d'Arbeloff Laboratory for Information Systems and Technologyen_US
dc.publisher.originalInstitute of Electrical and Electronics Engineersen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record