Design of an embedded piezoceramic actuator for active control applications

Gary H. Koopmann, George A. Lesieutre, Shoko Yoshikawa, Weicheng Chen, John Brian Fahnline, Suresh P. Pai, Brian R. Dershem

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The design of a piezoceramic actuators which is to be embedded in a composite structure is examined. The actuator device must: (1) include a collocated accelerometer; (2) meet certain actuation authority (force, stroke) requirements; (3) be able to survive the embedding process; and (4) have a minimal effect on structural integrity. The need to accommodate an accelerometer limits the minimum thickness of the device. To ensure that the (brittle) piezoceramic material is not broken during the embedding process, it is encased within a frame which has been designed to protect the piezoceramic from short durations of high temperature and pressure. Additionally, the frame is used to apply a compressive prestress to the piezoceramic, ensuring that the piezoceramic is protected from tensile stresses encountered in the operating environment. The output strain levels of the piezoceramic are maximized by using a co-fired stack (178 layers) oriented such that the piezoceramic is excited in the 3 - 3 direction. Because the layers of the piezoceramic stack are to be driven at high voltages, a special high power amplifier was designed which can source the current required by the actuator. The performance of the actuator alone has been tested by driving it uniaxially into a known impedance and measuring the output force and displacement at low frequency. Results form the tests and associated models are presented, which demonstrate the performance capabilities of the actuator.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages703-713
Number of pages11
ISBN (Print)0819417920
StatePublished - Jan 1 1995
EventSmart Structures and Materials 1995: Smart Structures and Integrated Systems - San Diego, CA, USA
Duration: Feb 27 1995Mar 3 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2443
ISSN (Print)0277-786X

Other

OtherSmart Structures and Materials 1995: Smart Structures and Integrated Systems
CitySan Diego, CA, USA
Period2/27/953/3/95

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Design of an embedded piezoceramic actuator for active control applications'. Together they form a unique fingerprint.

Cite this