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Design and development of a piezoelectric linear actuator for smart structures

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Design and development of a piezoelectric linear actuator for smart structures

Li, Jian (2004) Design and development of a piezoelectric linear actuator for smart structures. Masters thesis, Concordia University.

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Abstract

The objective of this research is to present a proof-of-concept design of an inchworm-type piezoelectric actuator with output of maximum displacement and force (or power) for shape control and vibration control of adaptive truss structures. The proposed inchworm actuator adopts "pusher" type with frictional clamping mechanisms and similar to most inchworm-type actuators it consists of three main components: two clamping or braking devices and expanding device. The central expanding device consists of a longitudinal PZT stack and a thin wall tube to provide extension-contraction motion and output force. The clamping device consists of the same tubular type PZT stack, a compliant mechanism to amplify the displacement of PZT stack, and a pre-load mechanism. The compliant mechanism consists of three flexure clamps with flexible hinges, two support rings with adjustable screws and two cover wafers, which integrate all three flexure clamps into a compliant frame. (Abstract shortened by UMI.)

Divisions:Concordia University > Faculty of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (Masters)
Authors:Li, Jian
Pagination:xviii, 148 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Mechanical and Industrial Engineering
Date:2004
Thesis Supervisor(s):Sedaghati, Ramin
ID Code:8106
Deposited By:Concordia University Libraries
Deposited On:18 Aug 2011 14:15
Last Modified:18 Aug 2011 15:47
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