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Vibration suppression using smart structuresThe control of structures for vibration suppression is discussed in the context of using smart materials and structures. Here the use of smart structures refers to using embedded piezoelectric devices as both control actuators and sensors. Using embedded sensors and actuators allows great improvements in performance over traditional structures (both passive and active) for vibration suppression. The application of smart structures to three experimental flexible structures is presented. The first is a flexible beam, the second is a flexible beam undergoing slewing motion, the third is a ribbed antenna. A simple model of a piezoelectric actuator/sensor is presented. The equations of motion for each structure is presented. The control issues considered as those associated with multi-input, multi-output control, PID control and LQR control implementation. A modern control analysis illustrates the usefulness of smart structures for vibration suppression.
Document ID
19930048747
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Garcia, Ephrahim
(NASA Langley Research Center Hampton, VA, United States)
Inman, Daniel J.
(NASA Langley Research Center Hampton, VA, United States)
Dosch, Jeffrey
(New York State Univ. Buffalo, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Smart structures and materials; Proceedings of the Symposium, 112th ASME Winter Annual Meeting, Atlanta, GA, Dec. 1-6, 1991 (A93-32726 12-39)
Publisher: American Society of Mechanical Engineers
Subject Category
Structural Mechanics
Accession Number
93A32744
Funding Number(s)
CONTRACT_GRANT: NAG1-1187
CONTRACT_GRANT: AF-AFOSR-91-0181
Distribution Limits
Public
Copyright
Other

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