Diagnosis method for suspension-errors detection in electro-dynamic loud-speakers

Author

Sala, V. ; Delgado, M. ; Cusidó, J. ; Romeral, L.

Author_Institution

Dept. of Electron. Eng., UPC-Univ. Politec. de Catalunya, Terrassa, Spain

fYear

2011

fDate

10-12 May 2011

Firstpage

1

Lastpage

4

Abstract

In this paper, the wear of the suspensions in a speaker. This phenomenon can be characterized and seen as a variation of half inductance seen from the amplifier, because that value depends directly on the minimum and maximum excursion in the displacement of the moving coil. Having analyzed the possible cases of involvement of the shift from worn suspensions, has raised a board decision by which it is possible to diagnose the state of the suspension by measuring currents and voltages and calculation of half inductance seen from the amplifier.

Keywords

amplifiers; coils; electric current measurement; electrodynamics; error detection; inductance; loudspeakers; suspensions (mechanical components); voltage measurement; wear; amplifier; current measurement; diagnosis method; electrodynamic loudspeaker; half inductance calculation; maximum excursion; minimum excursion; moving coil displacement; suspension error detection; suspension wear; voltage measurement; worn suspensions; Coils; Computer aided software engineering; Impedance; Inductance; Loudspeakers; Magnetic flux; Suspensions; Current Signal processing; Fault Detection; Loadspeaker;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE

Conference_Location

Binjiang

ISSN

1091-5281

Print_ISBN

978-1-4244-7933-7

Type

conf

DOI

10.1109/IMTC.2011.5944220

Filename

5944220