In this paper, we present an adaptive estimation framework predicated on multiagent network identifiers with undirected and directed graph topologies. Specifically, the system state and plant parameters are identified online using N agents implementing adaptive observers with an interagent communication architecture. The adaptive observer architecture includes an additive term which involves a penalty on the mismatch between the state and parameter estimates. The proposed architecture is shown to guarantee state and parameter estimate consensus. Furthermore, the proposed adaptive identifier architecture provides a measure of agreement of the state and parameter estimates that is independent of the network topology and guarantees that the deviation from the mean estimate for both the state and parameter estimates converge to zero. Finally, an illustrative numerical example is provided to demonstrate the efficacy of the proposed approach.
Adaptive Estimation Using Multiagent Network Identifiers With Undirected and Directed Graph Topologies
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received May 16, 2013; final manuscript received October 21, 2013; published online December 16, 2013. Assoc. Editor: Sergey Nersesov.
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Sadikhov, T., Demetriou, M. A., Haddad, W. M., and Yucelen, T. (December 16, 2013). "Adaptive Estimation Using Multiagent Network Identifiers With Undirected and Directed Graph Topologies." ASME. J. Dyn. Sys., Meas., Control. March 2014; 136(2): 021018. https://doi.org/10.1115/1.4025802
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