On observability and design of observers in timed continuous petri net systems

  1. Júlvez, J. 1
  2. Jiménez, E. 2
  3. Recalde, L. 1
  4. Silva, M. 1
  1. 1 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
IEEE Transactions on Automation Science and Engineering

ISSN: 1545-5955

Any de publicació: 2008

Volum: 5

Número: 3

Pàgines: 532-537

Tipus: Article

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DOI: 10.1109/TASE.2008.917016 SCOPUS: 2-s2.0-46849108532 WoS: WOS:000257436900013 GOOGLE SCHOLAR

Altres publicacions en: IEEE Transactions on Automation Science and Engineering

Resum

This paper is devoted both to the study of observability criteria and the design of observers in the continuous Petri net setting. The concept of structural observability, regarding the possibility of estimating the marking of places, i.e., the system state, for any speed of the transitions is introduced and studied for the subclass of join-free Petri nets (JF). For non-join-free Petri nets, conditions to compute suitable state estimates are established. The proposed observers are piecewise linear systems that assure the continuity of the estimate even when a switch occurs. The system simulation may allow us to estimate even the unobservable space of the net system during a given time period. © 2008 IEEE.