Accession Number:

ADA244350

Title:

Approximation Methods for Control of Acoustics/Structure Models with Piezoceramic Actuators

Descriptive Note:

Contractor rept.

Corporate Author:

INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA

Report Date:

1991-12-01

Pagination or Media Count:

31.0

Abstract:

The active control of acoustic pressure in a two dimensional cavity with a flexible boundary a beam is considered. Specifically, this control is implemented via piezoceramic patches on the beam which produce pure bending moments. The incorporation of the feedback control in this manner leads to a system with an unbounded input term. Approximation methods in the context of a Linear Quadratic Regulator state space formulation are discussed and numerical results demonstrating the effectiveness of this approach in computing feedback controls for noise reduction are presented.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Acoustics
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE