Motional Feedback in a Bass Loudspeaker

Analogue Implementation

Bachelor thesis (2018)

Authors

I. van Straalen Electrical Engineering, Mathematics and Computer Science
V.S. Krishnasing Electrical Engineering, Mathematics and Computer Science

Contributors

G.J.M. Janssen (supervisor 1)
Faculty
Electrical Engineering, Mathematics and Computer Science
Copyright: © 2018 Ivo van Straalen, Vyasa Krishnasing
Motional Feedback Control Non-linear distortion Instability
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Published Date

03-07-2018

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Abstract

This thesis is part of the Bachelor Graduation Project of Electrical Engineering at Delft University of Tech-nology. This contains the complete design process of an analogue implementation of a Motional Feedbackcontroller. Although the complete controller has been designed, no significant test results have yet beenacquired. However, theoretically the linear distortion at20H zis reduced by99.88%by the controller. Alsois predicted that the nonlinear distortion is suppressed, because of the high loop gain. The feedback signalis generated using an accelerometer. The controller mainly consists of a PI-controller and a predistortionfilter by means of a Linkwitz Transform.