Control of Sound Transmission into a Closed Cavity Using Smart Structures

Editor(s)

Spillman, William B.

Abstract

This paper describes several alternative solutions to the problem of controlling sound transmission through rectangular plates radiating into an enclosed cavity. The specific problem examined is how adaptive filtering compares with feedback control techniques for reducing the level of sinusoidal disturbances transmitted by the plate. In a smart structure with embedded sensors and actuators, it will be likely that feedback control is the preferred option. The feedback controllers examined are LQG/LTR, H(infinity) , internal disturbance model pole placement, and internal disturbance model LQG. These controllers are compared to the filtered-x LMS technique, which is the standard method of dealing with sinusoidal disturbances for this type of problem. All the controllers are examined using simulation and then implemented on a test structure.

Meeting Name

Smart Structures and Materials 1995

Department(s)

Mechanical and Aerospace Engineering

Second Department

Electrical and Computer Engineering

Keywords and Phrases

Smart Structures; Feedback Control; Sensors; Simulations; Actuators; Feedback

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1995 SPIE -- The International Society for Optical Engineering, All rights reserved.

Publication Date

01 Jan 1995

Link to Full Text

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