-diagnosability for active on-line diagnosis in discrete event systems

• Autores: Feng Lin, Le Yi Wang, Wen Chen, Leitao Han-, Bin Chen
• Localización: Automatica: A journal of IFAC the International Federation of Automatic Control, ISSN 0005-1098, Vol. 83, 2017, págs. 220-225
• Idioma: inglés
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• Resumen

  • Abstract In this paper, we investigate active on-line diagnosis in discrete event systems. Active diagnosis can be used for fault detection, fault localization, fault-tolerant control, among others. Discrete event systems are general models for complex manmade systems. For the active on-line diagnosis, we do not construct the entire diagnostic automaton off-line. Instead, we look N steps ahead to determine active diagnosability and calculate diagnostic strategies. Thus, we define active N -diagnosability and investigate the relation between active diagnosability and active N -diagnosability. We also develop an algorithm to check active N -diagnosability. If a system is actively N -diagnosable, the algorithm will also give the control that diagnoses the system. We show that there are significant computational advantages for using the on-line approach.