Iterative interaction decoupling for multivariate time-varying systems applied to a Gravitational Wave Detector
Year: 2024
Type: conference-paper
Abstract: Some of the feedback loops in the Advanced Virgo+ Gravitational Wave detector exhibit strong coupling and this coupling also varies over time. This paper presents a method to decouple the loops using a decoupling matrix, removing restrictions on the attainable performance of the feedback loops. The presented method performs batch-wise identification of the coupling matrix using only a single sinusoid per loop as perturbation by exploiting the specific structure of the plant to interpolate between frequency bins. The presented method is implemented on AdV+ and is shown to lead to significant decoupling of the loops and to keep the interaction terms low over time.
Language: English
Subfield: Control and Systems Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Funders: Centres de Recerca de Catalunya, Institut des Origines de Lyon, European Commission, Fundacja na rzecz Nauki Polskiej, Fonds De La Recherche Scientifique - FNRS, Generalitat de Catalunya, Fonds Wetenschappelijk Onderzoek, Generalitat Valenciana, Hungarian Scientific Research Fund, Centre National de la Recherche Scientifique, Vlaamse regering, Istituto Nazionale di Fisica Nucleare, Agencia Estatal de Investigación
OpenAlex ID: W4400946194