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Deflection Control of a Corner-Supported Plate Using Segmented In-Plane Actuators

[+] Author Affiliations
Hartono Sumali, Jordan E. Massad, Pavel M. Chaplya, Jeffrey W. Martin

Sandia National Laboratories

Paper No. IMECE2004-61141, pp. 103-109; 7 pages
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Aerospace
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Aerospace Division
  • ISBN: 0-7918-4700-4 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME


This paper describes an array of in-plane piezoelectric actuator segments laminated onto a corner-supported substrate to create a thin bimorph for reflector applications. An electric field distribution over the actuator segments causes the segments to expand or contract, thereby effecting plate deflection. To achieve a desired bimorph shape, the shape is first expressed as a two-dimensional series expansion. Then, using coefficients from the series expansion, an inverse problem is solved that determines the electric field distribution realizing the desired plate shape. A static example is presented where the desired deflection shape is a paraboloid.

Copyright © 2004 by ASME



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