Partial Reconfiguration of Control Systems using Petri Nets Structural Redundancy

  • Mildreth I Alcaraz-Mejia ITESO University
  • Raul Campos-Rodriguez ITESO University
  • Ernesto Lopez-Mellado CINVESTAV Guadalajara Unit
  • Antonio Ramirez-Trevino CINVESTAV Unidad Guadalajara
Keywords: Discrete Events, Control Systems, Reconfiguration, Structural Redundancy, Petri nets


This paper deals with the partial reconfiguration of the discrete control systems due to resource failures using the structural redundancy of the global system model. The approach herein proposed introduces a new subclass of Interpreted Petri Nets (IPN), named Interpreted Machines with Resources (IMR), allowing representing both the behaviour of a system and the resource allocation. Based on this model, an efficient reconfiguration algorithm is proposed; it is based on finding the set of all redundant sequences using alternative resources. The advantages of this structural reconfiguration method are: (1) it provides minimal reconfiguration to the system control assuring the properties of the original control system, (2) since the model includes resource allocation, it can be applied to a variety of systems such as Business Processes, and FPGAs, among others. The method is illustrated through a case study dealing with a manufacturing system controller that includes both alternative resources and operation sequences.


Author Biographies

Mildreth I Alcaraz-Mejia, ITESO University
Department of Electronic, Systems and Informatics, Research Professor.
Raul Campos-Rodriguez, ITESO University
Department of Electronic, Systems and Informatics, Research Professor
Ernesto Lopez-Mellado, CINVESTAV Guadalajara Unit
Research Professor
Antonio Ramirez-Trevino, CINVESTAV Unidad Guadalajara
Research Profesor