Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
A SIMPLIFIED MEASUREMENT SYSTEM FOR VIBRATION ANALYSIS ON SMALL LOUDSPEAKER
Submission Author:
José Marques Basílio Sobrinho , PB
Co-Authors:
José Marques Basílio Sobrinho, Alan Gonçalves, Renato Rangel, Cícero da Rocha Souto
Presenter: José Marques Basílio Sobrinho
doi://10.26678/ABCM.COBEM2019.COB2019-0906
Abstract
In this work is presented an experimental procedure that can be used to evaluate several vibrational electromechanical devices, such as shakers, loudspeakers, piezoelectric actuators, etc. For the validation an experimental setup was set up to evaluate the responses of a small speaker. This setup is composed of: power supply, amplifier circuit and of conditioning, DAQ 6216, loudspeaker, accelerometer and a person computer with the routine implemented in the software LABVIEW® for the control and monitoring of the system. In the excitation, the Chirp signals were generated to promote a frequency sweep at constant amplitudes of 0.5, 1, 2, 3 and 4 V, resulting in a better analysis of the device. By performing a proper synchronization between the output and input signals in DAQ 6216, it was possible to optimally acquire the signals involved in the system, resulting in the not need to use signal generators and oscilloscopes for analysis of this type. From the presented results it is worth mentioning that the instrumentation developed can be considered of great utility in the characterization of mechanical vibration systems.
Keywords
Vibration Analysis, Instrumentation, Chirp signal, Loudspeaker
