State Estimation of the Nonself-Adjoint Acoustic Duct System

[+] Author and Article Information
A. J. Hull

Submarine Sonar Department, Naval Underwater Systems Center, New London, CT 06320

C. J. Radcliffe

Department of Mechanical Engineering, Michigan State University, East Lansing, Mich. 48824

C. R. MacCluer

Department of Mathematics, Michigan State University, East Lansing, Mich. 48824

J. Dyn. Sys., Meas., Control 113(1), 122-126 (Mar 01, 1991) (5 pages) doi:10.1115/1.2896337 History: Revised January 01, 1989; Received September 11, 1989; Online March 17, 2008


The acoustic response of a hard walled duct with a partially absorptive boundary condition has been modeled in state space form. The system states of this model are not directly measurable. An observer is developed to obtain the state estimates. Numerical simulations are presented and convergence of the observer is discussed. Different integration schemes are compared and comments are made for eventual real-time application.

Copyright © 1991 by The American Society of Mechanical Engineers
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