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In this paper, a design methodology and implementation architecture for diagnosers in the framework of hybrid systems is proposed. The design methodology is based on the hybrid automata model that represents the system behaviour by means of the interaction of continuous dynamics and discrete events. The architecture is composed by means of modules which realize the mode recognition and diagnostic...
The problem studied in this paper is the control of discrete event systems subject to strict temporal constraints using (max, +) algebra. Initially we sought necessary and sufficient conditions for the existence of a causal control law guaranteeing the respect of the temporal constraints. Subsequently, a method for calculating the control law, if any, is proposed. The application which we are interested...
A unified approach to the problem of fault diagnosis is considered for the cases of continuous-time and discrete-time nonlinear and linear system models as well as for discrete-event model. The feature of this approach is that it allows obtaining the unique on the algorithmic level solution of the problem for all above types of the models. Conventional differential geometric and pair algebra of partitions...
System evolution, such as addition or replacement of a component, may necessitate complete re-design. Such redesign may be needed to respect new or updated requirements. The models then have to be modified. In this paper, we present a procedure for reconfiguration of a discrete event system (DES) controller. Based on supervisory control theory (SCT), the objective of this work is to show how the SCT...
This paper considers the communication network effects in the remote diagnosis of discrete-event systems, where the diagnostic task is decomposed into an on-board and an off-board diagnostic task. The system to be diagnosed and the communication network are modelled by timed automata with discrete inputs and outputs. A novel serial composition operation for timed automata is proposed. For diagnosis,...
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