Implementation of acoustic measurement system for tracking the resonance frequency in different driving conditions (CROSBI ID 639302)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Mandek, Silvio ; Horvat, Marko ; Petošić, Antonio
engleski
Implementation of acoustic measurement system for tracking the resonance frequency in different driving conditions
The parameters of acoustic systems such as piezo-actuators and sensors are usually determined at low excitation levels using the frequency sweeping signals around the resonance frequency of interest. This work investigates the possibility of implementation of an acoustic measurement system on the FPGA platform, in order to increase the speed at which the measurements are performed and the resonance frequencies are determined. The classical frequency sweeping signal measurement is implemented. The resonance frequency at different excitation levels is determined with up- and down-sweeping signals. In real operating conditions, the resonance frequency and the magnitude of admittance and/or displacement is changing. The reason for this change are the nonlinear effects that occur in devices and loading mediums, and also the changes in thermodynamical conditions. The algorithm for tracking the resonance frequency is implemented as well. It is based on the examination of the phase characteristic and of the local maximum of admittance/displacement around the resonance frequency. The algorithm is implemented in real time due to the influence of nonlinear effects and constantly changing thermodynamical conditions in high- power applications of ultrasonic transducers.
resonance tracking algorithm; FPGA
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
283-290.
2016.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of the 7th AAAA Congress on Sound and Vibration with Exhibition
Čudina, Mirko
Ljubljana: Slovenian Acoustical Society (SDA)
Podaci o skupu
7th AAAA Congress on Sound and Vibration with Exhibition
predavanje
22.09.2016-23.09.2016
Ljubljana, Slovenija