Object oriented rule-based control on a personal computer

Author

Vadhwana, V.

Author_Institution

BP Res. Int., Sunbury-on-Thames, UK

fYear

1989

fDate

32590

Firstpage

42522

Lastpage

42526

Abstract

A rule based control system, known as `RUBIC´ (rule-based intelligent control), has been implemented in SmallTalk to run on a personal computer. RUBIC uses fuzzy logic to decipher the vaguely defined terms such as `high, low, OK´, etc which are used in the control rules, e.g. IF (Temp is LOW) THEN (make a MEDIUM increase to fuel rate). A graphical interface tool, which is linked to every instance of a rule-based object, has been developed to make the system easy to use. The graphics make extensive use of the SmallTalk graphics primitives. The graphics tool is used for entering the control-rules and the fuzzy sets associated with ill-defined quantities such as LOW, HIGH, etc. RUBIC has been used to control temperature in a model of an exothermic reactor and level in a model of a spherical vessel. It is planned to use RUBIC for temperature control on an exothermic pilot plant reactor

Keywords

computer graphics; heat systems; knowledge based systems; microcomputer applications; temperature control; user interfaces; RUBIC; SmallTalk graphics primitives; control rules; decipher; exothermic pilot plant reactor; fuzzy logic; fuzzy sets; graphical interface tool; ill-defined quantities; level; object oriented; personal computer; rule based control system; rule-based intelligent control; rule-based object; spherical vessel; temperature control; vaguely defined terms;

fLanguage

English

Publisher

iet

Conference_Titel

Use of Personal Computer Systems for Plant Monitoring and Control, IEE Colloquium on

Conference_Location

London

Type

conf

Filename

198116