Title :
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
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;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE
Conference_Location :
Binjiang
Print_ISBN :
978-1-4244-7933-7
DOI :
10.1109/IMTC.2011.5944220
