Abstract
This paper considers networked discrete-event systems, which consist of agents that utilise digital communication for solving cooperative control tasks. The agents can solve local tasks autonomously, because they include a local tracking controller that enables them to reach specified target states. Cooperative control tasks are represented by synchronous state transitions that are realised by applying digital communication between the agents. The problem to be solved is to avoid blocking situations resulting from the execution of incompatible sequences of synchronous state transitions. The paper proposes a new decision unit that is connected to each agent, which initiates temporary cooperation between the agents via the communication network whenever the local tracking controllers may lead their agents into a blocking situation. Then the decision units temporarily modify the control aim such that all agents execute the same sequences of synchronous state transitions before reaching their target states. It is proved that in the networked system the target states are reached by each agent in spite of the synchronous state transitions to be executed.
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