DocumentCode :
3332257
Title :
Observers for discrete-event manufacturing systems
Author :
Chand, Sujeet
Author_Institution :
Rockwell Int., Thousand Oaks, CA, USA
fYear :
1991
fDate :
28 Oct-1 Nov 1991
Firstpage :
93
Abstract :
The author describes the design of observers for a class of discrete-event dynamic systems where events can become unobservable in real time. He defines a novel temporal model that augments a finite state machine to describe both the temporal and behavioral attributes of the system. The behavioral model is analyzed to generate ambiguity trees that contain unobservable states due to certain events becoming unobservable in real time. The depth of an ambiguity tree is a measure of the degree of ambiguity in a normally observable system due to the loss of an event. The author describes an observer that changes the temporal attributes of the model in real time to identify ambiguous states
Keywords :
State estimation; discrete time systems; manufacture; production control; state estimation; trees (mathematics); ambiguity trees; behavioral attributes; discrete-event manufacturing systems; dynamic systems; finite state machine; observers; temporal model; Automata; Automatic control; Control system synthesis; Delay estimation; Discrete event systems; Equations; Loss measurement; Manufacturing systems; Power system modeling; Real time systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1991. Proceedings. IECON '91., 1991 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-87942-688-8
Type :
conf
DOI :
10.1109/IECON.1991.239322
Filename :
239322
Link To Document :
بازگشت