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Proceedings Paper

Piezoelectric displacement feedback control with time delay
Author(s): James M. Sloss; Sarp Adali; Ibrahim S. Sadek; John C. Bruch
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Paper Abstract

Distributed vibration control of an elastic beam is analyzed. The elastic beam is sandwiched between two thin layers of mono-axially oriented piezoelectric material. One layer acts as a distributed sensor while the other behaves as an actuator. A displacement feedback control with a time delay is implemented. In this feedback, the distributed sensor signal which is proportional to strains is amplified and applied to the actuator after a time delay. Because of the nature of the problem the control action enters as a boundary control. An evaluation of the control effectiveness, natural frequency and damping is made for the case of a cantilever beam. Comparisons are given with the uncontrolled cases and zero-delay systems.

Paper Details

Date Published: 4 June 1999
PDF: 8 pages
Proc. SPIE 3667, Smart Structures and Materials 1999: Mathematics and Control in Smart Structures, (4 June 1999); doi: 10.1117/12.350115
Show Author Affiliations
James M. Sloss, Univ. of California/Santa Barbara (United States)
Sarp Adali, Univ. of Natal (South Africa)
Ibrahim S. Sadek, American Univ. of Sharjah (United Arab Emirates)
John C. Bruch, Univ. of California/Santa Barbara (United States)

Published in SPIE Proceedings Vol. 3667:
Smart Structures and Materials 1999: Mathematics and Control in Smart Structures
Vasundara V. Varadan, Editor(s)

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