NDLI: An intelligent controller for process automation

Content Provider	IEEE Xplore Digital Library
Author	Badami, V.V. Nielsen, P. Comly, J.B.
Copyright Year	1990
Description	Author affiliation: GE Res. & Dev. Center, Schenectady, NY, USA (Badami, V.V.; Nielsen, P.; Comly, J.B.)
Abstract	A novel supervisory controller that incorporates both a procedural and a rule-based language and is capable of responding to asynchronous real-time sensor interrupts is presented. This supervisory controller has been used for automating the manual operations in GaAs crystal growth in a liquid-encapsulated-Czochralski- (LEC-) process-based puller from Cambridge Instruments (CI-358). The controller, referred to as the metacontroller (MC), executes plans to sequence the operations of crystal growth. Plans are structured English-like representations of scripts that operators follow to grow crystals. The metacontroller executes the plans by responding to asynchronous sensor data interrupts in realtime and issuing actuator commands to a real-time controller module. The notion of time is explicitly incorporated into the syntax of the language. The metacontroller has been successful in automating sections of the full crystal growth protocol for GaAs using the LEC apparatus. Two 4-in.-diameter boules have been grown from 8-kg charges using the system where plans have been implemented. Portions of the synthesis and meltback steps have been automated, and the seed-on step that requires the most manual operation is almost completely automated.
Starting Page	1076
Ending Page	1081
File Size	662950
Page Count	6
File Format	PDF
ISBN	0818621087
ISSN	21589860
DOI	10.1109/ISIC.1990.128588
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-09-05
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Automatic control Process control Automation Intelligent sensors Manuals Gallium arsenide Instruments Crystals Actuators Protocols
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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