NDLI: Investigation of Proportional Integral Derivative control stability for mission critical cooling equipment

Content Provider	IEEE Xplore Digital Library
Author	Faulkner, A. Mackay, S. Tennakoon, S. Al-Tai, M.
Copyright Year	2015
Description	Author affiliation: Staffordshire Univ., Stafford, UK (Tennakoon, S.; Al-Tai, M.) \|\| RBS, UK (Faulkner, A.; Mackay, S.)
Abstract	This paper details the areas of advanced research in control systems engineering and the practical application of Proportional Integral Derivative (PID) controllers for the temperature control of data storage units, which is a mission critical facility in the Royal bank of Scotland's data centre. Loop tuning techniques inclusive of the Ziegler Nichols were applied to obtain optimum system response, thus maximising efficiency of the cooling system. The business objective was to reduce the control systems offset to ensure the temperature set point within the `cold aisle' containment remained within a ± 1°C error band. This ensured optimum climate conditions for the IT servers and optimised plant efficiency thus reduced the facilities energy demand. The control system comprised of a number of networked logic controllers, each with individual PID loop modules. Existing control system deficiencies highlighted the severe oscillations from inadequately tuned controllers; this led to uncontrolled cooling valves which ascertained a 5°C error band within the data storage `cold aisle' containment. Application of temperature transducer calibration techniques, analytical equations, advanced tuning logarithms and software tuning provided a substantial improvement of stability control. Post Modification coefficients obtained an 18.4 % improvement with respect to decreasing the error band in all PID controllers. An expected lifecycle reduction of energy consumption from post modification tuning loops was calculated to be a value in excess of £238k.
Starting Page	1
Ending Page	5
File Size	1097406
Page Count	5
File Format	PDF
e-ISBN	9781467396820
DOI	10.1109/UPEC.2015.7339900
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-01
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cooling Lifecycle Stability analysis Control System Cost Tuning Thermal stability Building Control Engineering Reduction Energy Data Centre Efficient Software
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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