DesignLab
  • Departamento de Engenharia Mecatrônica
    Escola Politécnica - Universidade de São Paulo

Design of Automatic Control System Based on unified timed hybrid Petri Nets

Benitez-Pina, I. F. and Lamar-Carbonell, S. and Silva, R. M. and Miyagi, P. E. and Silva, J. R.

Journal 
Dyna 
Autor 
Benitez-Pina, I. F. and Lamar-Carbonell, S. and Silva, R. M. and Miyagi, P. E. and Silva, J. R. 
Book Title 
 
Volume 
84 
Página(s) 
80--89 
DOI 
dx.doi.org/10.15446/dyna.v84n200.56917 
Published 
2017 
Month 
Tipo de Documento 
Artigo em Revista 
Abstract 
A practical problem in automation systems modeling is the choice between a fully hybrid approach and the fluidization of some parts conserving the general discrete event approach. This paper explores the approach based on specific hybrid parts into a discrete event system using a unified Petri nets environment called GHENeSys (General Hierarchical Enhanced Net System), which follows the ISO/IEC 15909 standard and includes extensions such as hierarchy and time (both in time slices or dense intervals) concepts. Then, a design method based on GHENeSys Timed Hybrid Petri Net (GTHPN) technique is proposed to model these hybrid parts. In GHENeSys subnets in macro-places and macro transition help to control combinatorial explosion and are enhanced with extended arcs to guarantee the GTHPN applicability to practical cases. In a near future all resulting models of proposed approach could also benefit from an easier conversion to PLC programs in IEC 61131 representation. A case study is presented for producing construction blocks showing the advantages of the current proposition 
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