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Discrete-Time Dynamic Consensus on the Max Value

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15th European Workshop on Advanced Control and Diagnosis (ACD 2019) (ACD 2019 2018)

Abstract

In this paper, we propose a novel consensus protocol for discrete-time multi-agent systems (MAS), which solves the dynamic consensus problem on the max value, the so-called dynamic max-consensus problem. In the dynamic max-consensus problem, the objective of each agent is to estimate the time-varying value of the maximum instantaneous value among the reference signals associated to the agents in the network, by exploiting only local interactions. The proposed interaction protocol enables the agents to solve this problem with an a priori bounded error, without exchange of input information among the agents. Furthermore, the proposed protocol can be tuned by means of a tuning parameter, enabling a trade-off between convergence time and steady-state error. We also provide a preliminary characterization of the maximum relative tracking error. Numerical simulations corroborate the theoretical analysis of the convergence properties of the proposed protocol.

This work was supported in part by the Italian Ministry of Research and Education (MIUR) with the grant “CoNetDomeSys”, code RBSI14OF6H, under call SIR 2014 and by Region Sardinia (RAS) with project MOSIMA, RASSR05871, FSC 2014-2020, Annualità 2017, Area Tematica 3, Linea d’Azione 3.1.

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Notes

  1. 1.

    Note that by increasing the sampling frequency of the unknown reference exogenous signals their relative change in one iteration is reduced, thus for any signal with bounded relative change there exists a sampling frequency such that Assumption 22.1 is satisfied.

  2. 2.

    The round up function \(\lceil \cdot \rceil \) denotes the operation of rounding the argument to the first integer greater than or equal to the argument.

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Correspondence to Diego Deplano .

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Deplano, D., Franceschelli, M., Giua, A. (2022). Discrete-Time Dynamic Consensus on the Max Value. In: Zattoni, E., Simani, S., Conte, G. (eds) 15th European Workshop on Advanced Control and Diagnosis (ACD 2019). ACD 2019 2018. Lecture Notes in Control and Information Sciences - Proceedings. Springer, Cham. https://doi.org/10.1007/978-3-030-85318-1_22

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