NDLI: New low-cost technique for accurate surface velocity measurement of a rotating drum

Content Provider	IEEE Xplore Digital Library
Author	Kavanagh, R.C. Jones, A.
Copyright Year	1963
Abstract	The accurate determination of the velocity profile of an almost uniformly rotating drum is considered. The quality of estimation of the surface velocity obtained through usage of a measuring wheel placed in direct contact with the drum, and rigidly coupled to an encoder of high line count, is usually poor, due to wheel eccentricities and misalignment of the wheel and drum. A new algorithm is described which achieves the nonlinear filtering of the encoder output in such a manner as to yield a very close approximation to the actual drum velocity in most circumstances. A very good estimate of the effective variable gearing ratio between the drum and measuring wheel is achieved, yielding excellent discrimination between drum-based and wheel-based variations. The compensation method is justified theoretically. Computer simulation and experimental results obtained from a web processing plant illustrate the utility of the method. The latter results are shown to compare well with data obtained from a costly laser Doppler-based measurement system.
Sponsorship	IEEE Instrumentation and Measurement Society Bureau international des poids et mesures IEEE International Bureau of Weights and Measures (BIPM) URSI NBS Agency Ind. Sci. & Technol., Min. Int. Trade & Ind. Sci. Council Japan International Union of Pure and Applied Physics (IUPAP) NIST NRCC National Conference of Standards Laboratories (NCSL) Allen Osborne Associates Andeen-Hagerling, Inc. Ballantine Lab. Inc. Clarke-Hess Communications Research Corp. Fluke Corporation Guildline Instruments Hewlett-Packard Co. Julie Res. Lab. Inc. Keithley Instruments, Inc. Measurements International Ltd. Canada QuadTech Inc. Quantum Design Inc. Rotek Instrum. Corp. Tegam Inc. Tektronix Inc
Starting Page	416
Ending Page	422
Page Count	7
File Size	287363
File Format	PDF
ISSN	00189456
Volume Number	53
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Velocity measurement Wheels Optical distortion Nonlinear optics Optical films Optical signal processing Computer simulation Plastics industry Casting Approximation algorithms
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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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
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