Dynamic Modeling and Position Control of a Piezoelectric Flextensional Actuator

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dc.contributor.advisorHubbard, James Een_US
dc.contributor.authorNickless, Benjamin Johnen_US
dc.contributor.departmentAerospace Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2009-03-24T05:32:38Z
dc.date.available2009-03-24T05:32:38Z
dc.date.issued2008en_US
dc.description.abstractMany smart material actuators suffer in either insufficient force generation or displacement range, two important performance metrics in actuator design. Piezoelectric flextensional actuators were conceived to bridge the gap between displacement and force, offering acceptable performance in both categories. Their displacement range and load carrying capability make them suitable for many applications requiring micrometer-scale displacements. Typical applications require closed-loop control algorithms to achieve good resolution at these displacement levels. In this thesis, an open-loop model of a commercially available, piezoelectric flextensional actuator and drive system was designed. This model was used to design a feedback control system for reference tracking applications. The control system was built and verified with the physical actuator. Its performance was shown to agree with the model simulations. Both the model and the physical system had negligible overshoot, settling times of less than 30 milliseconds, and zero steady-state error in response to step inputs.en_US
dc.format.extent5726841 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/8970
dc.language.isoen_US
dc.subject.pqcontrolledEngineering, Mechanicalen_US
dc.titleDynamic Modeling and Position Control of a Piezoelectric Flextensional Actuatoren_US
dc.typeThesisen_US

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