NDLI: Control of processes with time delays

Content Provider	IEEE Xplore Digital Library
Author	Schneider, D.M.
Copyright Year	1972
Abstract	The need to control processes with time delays can be found in many aspects of the metallurgical industry from refining to rolling mills. When the time delay becomes long compared with the system time constant, or when the time delay varies, then control of the process becomes difficult using classical control methods. Three controllers are evaluated for their applicability to this problem: the classic proportional-integral (P-I) controller; the Smith linear predictor; and the Clarke-Gawthrop self-tuning controller. Each of the controllers is implemented on an example process which is first-order with a long time delay. All three control strategies are evaluated for their response to step reference changes, step load disturbances, and variations in the process time delay. No one control strategy has the perfect solution, so the advantages and limitations of each strategy are presented and discussed.<>
Sponsorship	IEEE Industry Applications Society
Starting Page	186
Ending Page	191
Page Count	6
File Size	546427
File Format	PDF
ISSN	00939994
Volume Number	24
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Process control Delay effects Pi control Proportional control Control systems Electrical equipment industry Industrial control Metals industry Refining Milling machines
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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