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Optimal Admission Control of Discrete Event Systems with Real-Time Constraints

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Abstract

The problem of optimally controlling the processing rate of tasks in Discrete Event Systems with hard real-time constraints has been addressed in prior work under the assumption that a feasible solution exists. Since this cannot generally be the case, we introduce in this paper an admission control scheme in which some tasks are removed with the objective of maximizing the number of remaining tasks which are all guaranteed feasibility. We derive several optimality properties based on which we develop a computationally efficient algorithm for solving this admission control problem under certain conditions. Moreover, when no future task information is available, we derive necessary and sufficient conditions under which idling is optimal and define a metric for evaluating when and how long it is optimal to idle. Numerical examples are included to illustrate our results.

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Authors and Affiliations

  1. Division of Systems Engineering and Center for Information and Systems Engineering, Boston University, Brookline, MA, 02446, USA

    Jianfeng Mao & Christos G. Cassandras

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  1. Jianfeng Mao
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  2. Christos G. Cassandras
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Correspondence to Jianfeng Mao.

Additional information

The authors’ work is supported in part by the National Science Foundation under Grants DMI-0330171 and EFRI-0735974, by AFOSR under grants FA9550-04-1-0133 and FA9550-04-1-0208, and by DOE under grant DE-FG52-06NA27490.

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Mao, J., Cassandras, C.G. Optimal Admission Control of Discrete Event Systems with Real-Time Constraints. Discrete Event Dyn Syst 20, 37–62 (2010). https://doi.org/10.1007/s10626-008-0052-5

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  • DOI: https://doi.org/10.1007/s10626-008-0052-5

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