Symbolic Computation of Reduced Guards in Supervisory Control
Artikel i vetenskaplig tidskrift, 2011

In the supervisory control theory, a supervisor is generated based on given plant and specification models. The supervisor restricts the plant in order to fulfill the specifications. A problem that is typically encountered in industrial applications is that the resulting supervisor is not easily comprehensible for the users. To tackle this problem, we introduce an efficient method to characterize a supervisor by tractable logic conditions, referred to as guards, generated from the models. The guards express under which conditions an event is allowed to occur to fulfill the specifications. To obtain tractable guard expressions, we reduce them by exploiting the structure of the given models. In order to be able to handle complex systems efficiently, the models are symbolically represented by binary decision diagrams and all computations are performed on these data structures. The algorithms have been implemented in a supervisory control tool and applied to an industrially relevant example.

Binary decision diagrams

deterministic finite automata

heuristic techniques

propositional formula

symbolic representation

supervisory control theory (SCT)

Författare

Sajed Miremadi

Chalmers, Signaler och system, System- och reglerteknik, Automation

Knut Åkesson

Chalmers, Signaler och system, System- och reglerteknik, Automation

Bengt Lennartson

Chalmers, Signaler och system, System- och reglerteknik, Automation

IEEE Transactions on Automation Science and Engineering

1545-5955 (ISSN)

Vol. 8 4 754-765 5764846

Ämneskategorier

Produktionsteknik, arbetsvetenskap och ergonomi

Reglerteknik

Styrkeområden

Produktion

DOI

10.1109/TASE.2011.2146249