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

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dc.contributor.advisor Nelson, Douglas J. en_US
dc.contributor.advisor Ahmadian, Mehdi en_US
dc.contributor.advisor Leo, Donald J. en_US
dc.contributor.author Malowicki, Mark en_US
dc.date.accessioned 2011-08-06T14:43:08Z
dc.date.available 2011-08-06T14:43:08Z
dc.date.issued 2000-06-22 en_US
dc.identifier.other etd-06292000-13570051 en_US
dc.identifier.uri http://hdl.handle.net/10919/9640
dc.description.abstract The 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_US
dc.format.medium ETD en_US
dc.publisher Virginia Tech en_US
dc.relation.haspart etd_mgm.pdf en_US
dc.rights The authors of the theses and dissertations are the copyright owners. Virginia Tech's Digital Library and Archives has their permission to store and provide access to these works. en_US
dc.source.uri http://scholar.lib.vt.edu/theses/available/etd-06292000-13570051 en_US
dc.subject piezoceramic en_US
dc.subject car seat en_US
dc.subject active suspension en_US
dc.title Active Vibration Isolation Using an Induced Strain Actuator with Application to Automotive Seat Suspensions en_US
dc.type Thesis en_US
dc.contributor.department Mechanical Engineering en_US
dc.description.degree MS en_US

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