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Active Vibration Isolation Using an Induced Strain Actuator with Application to Automotive Seat Suspensions

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dc.contributor.authorMalowicki, Marken
dc.contributor.committeechairLeo, Donald J.en
dc.contributor.committeememberNelson, Douglas J.en
dc.contributor.committeememberAhmadian, Mehdien
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2011-08-06T14:43:08Zen
dc.date.adate2000-07-07en
dc.date.available2011-08-06T14:43:08Zen
dc.date.issued2000-06-22en
dc.date.rdate2001-07-07en
dc.date.sdate2000-06-29en
dc.description.abstractThe characteristics of an automotive passenger seat in response to vibrational excitations are examined and an active vibration isolation system incorporating smart materials is designed, built, and tested. Human sensitivity to vibration is discussed. Characteristics of road roughness are discussed and used to implement a representative test input to a passenger seat system. extsc{Matlab} is used to model the car seat and vehicle system with four degrees of freedom to determine actuator requirements. Selection and implementation of a low--profile, prestressed piezoceramic device into an active seat suspension system is described, and experimental results of the actuator assembly performance are presented. Vibration isolation is realized in an experimental setup representing one quarter of a seat and passenger's total mass, using one actuator assembly (representing one corner of the seat suspension). For an input power spectrum representative of a passenger vehicle environment, the smart material actuator assembly, as applied to a quarter seat experimental setup, is proven to be capable of isolating vibration with an isolation frequency of 2Hz and no resonant peak, versus 6Hz and a resonant peak of 2g/g for an actual passenger seat tested.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.otheretd-06292000-13570051en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06292000-13570051en
dc.identifier.urihttp://hdl.handle.net/10919/9640en
dc.publisherVirginia Techen
dc.relation.haspartetd_mgm.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectpiezoceramicen
dc.subjectcar seaten
dc.subjectactive suspensionen
dc.titleActive Vibration Isolation Using an Induced Strain Actuator with Application to Automotive Seat Suspensionsen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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