Modeling and Control of Acoustic Structure Interaction Problems Via Piezoceramic Actuators: 2-D Numerical Examples

Autor:	Ralph C. Smith, Harvey Thomas Banks, Richard J. Silcox
Rok vydání:	1994
Předmět:	Periodic function Cauchy problem Engineering business.industry Control theory Pure bending General Engineering Bending moment Context (language use) Linear-quadratic regulator Boundary value problem business Beam (structure)
Zdroj:	Journal of Vibration and Acoustics. 116:386-396
ISSN:	1528-8927 1048-9002
DOI:	10.1115/1.2930440
Popis:	The modeling and active control of acoustic pressure in a 2-D cavity with a flexible boundary (a beam) is considered. Control is implemented in the model via piezoceramic patches on the beam which are excited in a manner so as to produce pure bending moments. The incorporation of the feedback control in this manner leads to a system with an unbounded input term. Approximation techniques are discussed and by writing the resulting system as an abstract Cauchy equation, the problem of reducing interior pressure fluctuations can be posed in the context of an LQR time domain state space formulation. Examples illustrating the dynamic behavior of the coupled system as well as demonstrating the viability of the control method on a variety of problems with periodic forcing functions are presented.
Databáze:	OpenAIRE
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