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Design and Implementation of a Digital Controller for An Infrasonic Speaker System

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2 Author(s)
Ilg, M. ; US Army Res. Lab., Aberdeen Proving Ground, MD ; Chang, B.C.

A variety of conditions in combatant zones exposes soldiers to high level infrasonic reverberations. In an effort to achieve realistic simulation in training exercises, it is desirable to duplicate the high level infrasonics, in a controlled and cost effective manner. Both commercial audio voice-coil and motor-driven speaker systems are inadequate for this application. In this paper, we design and implement a digital tracking controller for a modified motor-driven speaker system to generate infrasonic waves and minimize the motor drift and wave distortion. Frequency and time domain aspects of the design are considered, and both computer simulations and experimental results of the feedback control system are presented.

Published in:

Control Applications, 2007. CCA 2007. IEEE International Conference on

Date of Conference:

1-3 Oct. 2007

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