A control switching theory for supervisory control of discrete event systems

Author

Darabi, Houshang ; Jafari, Mohsen A. ; Buczak, Anna L.

Author_Institution

Dept. of Mech. & Ind. Eng., Univ. of Illinois, Chicago, IL, USA

Volume

19

Issue

1

fYear

2003

fDate

2/1/2003 12:00:00 AM

Firstpage

131

Lastpage

137

Abstract

In this paper, we introduce the concept of switching from one supervisory control to another one when changes in the state of an embedded sensory network occur. The sensory devices are assumed to be single functional, that is, they are programmed to observe and report only one event. The switching model is built based on the two criteria of language observability and state synchronization. Switching model is the basis for a megacontroller, which monitors the state of the sensory network embedded in the plant as well as the state of the supervisor in charge. Every time the state of this network changes, the megacontroller reconfigures the control system by finding an appropriate supervisor.

Keywords

discrete event systems; observability; synchronisation; control switching theory; discrete event systems; embedded sensory network; language observability; megacontroller; state synchronization; supervisory control; Automatic control; Control systems; Discrete event systems; Hardware; Intelligent sensors; Observability; Process design; Reconfigurable logic; Redundancy; Supervisory control;

fLanguage

English

Journal_Title

Robotics and Automation, IEEE Transactions on

Publisher

ieee

ISSN

1042-296X

Type

jour

DOI

10.1109/TRA.2002.807551

Filename

1177170