Accession Number:

ADA282665

Title:

A PDE-Based Methodology for Modeling, Parameter Estimation and Feedback Control in Structural and Structural Acoustic Systems

Descriptive Note:

Corporate Author:

INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA

Report Date:

1994-05-01

Pagination or Media Count:

12.0

Abstract:

A problem of continued interest concerns the control of vibrations in a flexible structure and the related problem of reducing structure-borne noise in structural acoustic systems. In both cases, piezoceramic patches bonded to the structures have been successfully used as control actuators. Through the application of a controlling voltage, the patches can be used to reduce structural vibrations which in turn leads to methods for reducing structure- borne noise. A PDE-based methodology for modeling, estimating physical parameters, and implementing a feedback control scheme for problems of this type is discussed. While the illustrating example is a circular plate, the methodology is sufficiently general so as to be applicable in a variety of structural and structural acoustic systems. PDE-Based structural model, Parameters estimation, Feedback control in experimental systems

Subject Categories:

  • Acoustics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE