Iterative interaction decoupling for multivariate time-varying systems applied to a Gravitational Wave Detector
conference paper
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.
Topics
TNO Identifier
998015
DOI
https://dx.doi.org/10.23919/ECC64448.2024.10590853
ISBN
9783907144107
Publisher
Institute of Electrical and Electronics Engineers IEEE
Source title
European Control Conference, ECC 2024, 25-28 June 2024, Stockholm, Sweden
Collation
6 p.
Pages
2454-2459
Files
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