Fault-diagnosis of grid structures

  • Authors:
  • Antonio Caruso;Stefano Chessa;Piero Maestrini;Paolo Santi

  • Affiliations:
  • Instituto di Elaborazione dell'Informazione del CNR, Via S. Maria 46, 56126, Pisa, Italy and Dipartimento di Informatica, Università di Pisa, Corso Italia 40, 56125 Pisa, Italy;Instituto di Elaborazione dell'Informazione del CNR, Via S. Maria 46, 56126, Pisa, Italy and Dipartimento di Informatica, Università di Pisa, Corso Italia 40, 56125 Pisa, Italy;Instituto di Elaborazione dell'Informazione del CNR, Via S. Maria 46, 56126, Pisa, Italy and Dipartimento di Informatica, Università di Pisa, Corso Italia 40, 56125 Pisa, Italy;Instituto di Elaborazione dell'Informazione del CNR, Via S. Maria 46, 56126, Pisa, Italy

  • Venue:
  • Theoretical Computer Science - Dependable computing
  • Year:
  • 2003

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Abstract

The problem of fault diagnosis in grid-connected systems is considered. A diagnosis algorithm, called DAGS and based on the PMC model, is presented. DAGS provides a diagnosis which is shown to be correct, although possibly incomplete, if the cardinality of the actual fault set is below a bound Tσ, dependent of the actual syndrome σ. A bound T independent of σ is also derived by a worst-case analysis covering the cases of triangular, square, hexagonal and octagonal grids. T is shown to be θ(n2/3), where n is the size of the system, for all the grids considered.