Supervisory control of a class of discrete event processes
SIAM Journal on Control and Optimization
Feedback control of Petri nets based on place invariants
Automatica (Journal of IFAC)
Digital Design
Reduction of constraints for controller synthesis based on safe Petri Nets
Automatica (Journal of IFAC)
Discrete, Continuous, and Hybrid Petri Nets
Discrete, Continuous, and Hybrid Petri Nets
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In this paper, we present two different methods for the synthesis of a simplified controller using Petri Nets. The supervisory control theory presented by Ramadge and Wonham is adapted to Petri nets modeling. Uncontrollable transitions in discrete event systems are the cause of forbidden states in supervisory control. This paper concerns the problem of forbidden states in safe Petri Net. We present different methods to reduce the number of constraints that prevent from forbidden states. Using these methods, we can construct a maximally permissive controller. The implementation of these approaches is considered using the SFC model.