DocumentCode
488439
Title
A Knowledge based Approach to Malfunction Diagnosis of Discrete Operations Involving Programmable Logic Controllers
Author
Myers, Douglas R. ; Davis, James F. ; Harley, Charles E.
Author_Institution
The Ohio State University, Department of Chemical Engineering, Columbus, Ohio
fYear
1990
fDate
23-25 May 1990
Firstpage
1974
Lastpage
1979
Abstract
Discrete processes controlled by programmable logic controllers involve two distinct diagnostic scenarios: dead state and degrading performance. This paper details a dual-hierarchical expert system approach which performs process diagnosis for both scenarios. Diagnosis of either scenario is classificatory in nature, using one of two specialized Sequential-Functional hierarchies.
Keywords
Chemical industry; Degradation; Industrial control; Logic devices; Logic testing; Machinery production industries; Programmable control; Programmable logic arrays; Programmable logic devices; Switches;
fLanguage
English
Publisher
ieee
Conference_Titel
American Control Conference, 1990
Conference_Location
San Diego, CA, USA
Type
conf
Filename
4791072
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