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

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

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1994
Accession Number
ADA282665

Entities

People

  • Donald E. Brown
  • H. Thomas Banks
  • R. C. Smith
  • R. J. Silcox
  • Vern L. Metcalf

Tags

Communities of Interest

  • Counter WMD
  • Sensors

DTIC Thesaurus Topics

  • Acoustics
  • Actuators
  • Computational Fluid Dynamics
  • Computational Science
  • Computations
  • Differential Equations
  • Engineering
  • Equations
  • Experimental Data
  • Feedback
  • Flexible Structures
  • Frequency
  • Materials
  • Modulus Of Elasticity
  • Three Dimensional
  • Two Dimensional
  • Vibration

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Materials Science and Engineering.
  • Structural Dynamics.