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COBEM 2019
25th International Congress of Mechanical Engineering
COMPARISON OF DIFFERENT EXCITATION SIGNALS IN A ROTORDYNAMIC SYSTEM
Submission Author:
David Julian Gonzalez Maldonado , RJ
Co-Authors:
Diego Alejandro Godoy Diaz, David Julian Gonzalez Maldonado, Fernando Augusto de Noronha Castro Pinto, Thiago Ritto, Vinicius Ferreira Côrtes
Presenter: David Julian Gonzalez Maldonado
doi://10.26678/ABCM.COBEM2019.COB2019-1822
Abstract
This paper deals with the performance of different excitation signals. They are applied to a test rig of active magnetic bearings to identify its stiffness and damping parameters. Experimental results are shown for each parameter obtained at discrete frequencies. Four signals are compared: pure harmonic, sweep, white noise and four low crest-factor multisine signals. Results showed that the dispersion of the parameters’ estimates using sweep and white noise signals is high. The lowest dispersion was found with the pure harmonic signal, even though the delayed time where significantly longer than the other assessed waves.
Keywords
Active Magnetic Bearings, Parameters Identification, Multisine Signal, Excitation Signal
