Experimental/analytical determination of optimal piezoelectric actuator locations on complex structures based on the actuator power factor

Simple item page
dc.contributor.authorBhargava, Adeshen
dc.contributor.committeechairRogers, Craig A.en
dc.contributor.committeememberChaudhry, Zaffiren
dc.contributor.committeememberRobertshaw, Harry H.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T21:43:33Zen
dc.date.adate2009-08-22en
dc.date.available2014-03-14T21:43:33Zen
dc.date.issued1995-02-03en
dc.date.rdate2009-08-22en
dc.date.sdate2009-08-22en
dc.description.abstractThe actuator power factor is defined as the ratio of the total dissipative mechanical power of a PZT actuator to the total supplied electrical power to the PZT actuator. If measured experimentally, it can be used to optimize the actuator location and configuration for complex structures. The concept of actuator power factor is based on the ability of an integrated induced strain actuator such as a PZT actuator to transfer supplied electrical energy into structural mechanical energy. For a given structure such as a beam or a plate, the location and configuration of an actuator will directly influence the authority of the actuator towards driving the structure. Therefore by maximizing the average power factor for a given frequency interval, the actuator driving authority and thus the supply power utilization can be maximized. This thesis describes an experimental technique, based on the actuator power factor, for determining the optimal PZT actuator location(s) on complex structures for actuator power factor maximization and for active structural vibrational and acoustic control. For the actuator power factor analysis, the design of a removable PZT actuator unit is described. The concept of actuator power factor is ini tial1 y evaluated for the simple case of a cantilever beam and there is good agreement between the experimental and theoretical actuator power factor results. The optimization technique is then developed for the case of a complex structure designed to resemble an aircraft panel and shows good prediction for narrow-band as well as broadband power factor maximization.en
dc.description.degreeMaster of Scienceen
dc.format.extentxiv, 98 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-08222009-040530en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08222009-040530/en
dc.identifier.urihttp://hdl.handle.net/10919/44406en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1995.B437.pdfen
dc.relation.isformatofOCLC# 34066607en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectactuator power factoren
dc.subject.lccLD5655.V855 1995.B437en
dc.titleExperimental/analytical determination of optimal piezoelectric actuator locations on complex structures based on the actuator power factoren
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V855_1995.B437.pdf
Size:
5.22 MB
Format:
Adobe Portable Document Format
Download

Collections

Masters Theses