Comparison of the Time-Delay Margin of a Distributed and Centralized Observer

Haik Silm (1) , Rosane Ushirobira (2) , Denis Efimov (3) , Wim Michiels (4) , Jean-Pierre Richard (5, 3, 1) , Emilia Fridman (6)

1 Centrale Lille
2 GAIA - Géométrie, Algèbre, Informatique, Applications
3 NON-A-POST - Non-Asymptotic estimation for online systems
4 DCS - Department of Computer Science [Leuven]
5 CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille - UMR 9189
6 Department of Electrical Engineering

The benefit of a distributed observer concept for large-scale linear plants is shown by taking time-delays into account. It is asserted that a centralized observer suffers from delays in the measurement input, while a distributed structure allows to avoid them. In contrast, the network of the distributed observer induces communication delays among observer nodes. The delay margins for both observer concepts are estimated on a numerical example and compared using an eigenvalue-based frequency domain approach and an LMI based time-domain approach.

Domains: Automatic

Haik Silm, Rosane Ushirobira, Denis Efimov, Wim Michiels, Jean-Pierre Richard, et al.. Comparison of the Time-Delay Margin of a Distributed and Centralized Observer. ECC 2018 - European Control Conference, Jun 2018, Limassol, Cyprus. ⟨hal-01761390v1⟩