Determining the coupling source on a set of oscillators from experimental data
Summary: Complex systems are a broad concept that comprises many disciplines, including engineering systems. Regardless of their particular behavior, complex systems share similar behaviors, such as synchronization. This paper presents different techniques for determining the source of coupling when a set of oscillators synchronize. It is possible to identify the location and time variations of the coupling by applying a combination of analytical techniques, namely, the source of synchronization. For this purpose, analysis methods of experimental data from a complex mechanical system are presented. The experiment consists in placing a 24-bladed rotor under an airflow. The vibratory motion of the blades is recorded with accelerometers, and the resulting information is analyzed with four techniques: correlation coefficients, Kuramoto parameter, cross-correlation functions, and the recurrence plot. The measurements clearly show the existence of frequencies due to the foreground components and the internal interaction between them due to the background components (coupling).
scientific article; zbMATH DE number 6756011