Electromechanical response of electrostrictive materials behaves quadratically, while that of piezoelectric material behaves linearly. This study is to evaluate quadratic control response of electrostrictive actuators with reference to linear signal generation of piezoelectric sensors. A hybrid beam structure coupled with an electrostrictive RTV 270 actuator layer and a polyvinylidene-fluoride sensor layer is fabricated and its control response evaluated. Mathematical model is established first, followed by finite-difference discretization resulting in a set of finite difference equations used in numerical simulation of controlled and uncontrolled responses. The physical model connected to a bang-bang controller, a high-voltage amplifier, a data acquisition system is setup in laboratory. Due to the quadratic behavior of the electrostrictive actuator, the bang-bang controller activates the electrostrictive actuator only in the upward motion of the beam, according to the signals generated from the piezoelectric sensor. Vibration control characteristic (i.e., damping ratio estimation) of the beam subjected to various control conditions are evaluated. Experimental data are compared favorably with simulation results.
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ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 24–28, 2005
Long Beach, California, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4738-1
PROCEEDINGS PAPER
Nonlinear Control of Hybrid Electrostrictive/Piezoelectric Polymeric Structures: Theory and Experiment
W. K. Chai,
W. K. Chai
University of Kentucky, Lexington, KY
Search for other works by this author on:
H. S. Tzou
H. S. Tzou
University of Kentucky, Lexington, KY
Search for other works by this author on:
W. K. Chai
University of Kentucky, Lexington, KY
H. S. Tzou
University of Kentucky, Lexington, KY
Paper No:
DETC2005-85596, pp. 2433-2440; 8 pages
Published Online:
June 11, 2008
Citation
Chai, WK, & Tzou, HS. "Nonlinear Control of Hybrid Electrostrictive/Piezoelectric Polymeric Structures: Theory and Experiment." Proceedings of the ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 1: 20th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C. Long Beach, California, USA. September 24–28, 2005. pp. 2433-2440. ASME. https://doi.org/10.1115/DETC2005-85596
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