NDLI: Decentralized control of web processing lines

Content Provider	IEEE Xplore Digital Library
Author	Pagilla, P.R. Siraskar, N.B. Dwivedula, R.V.
Copyright Year	2005
Description	Author affiliation: Sch. of Mech. & Aerosp. Eng., Oklahoma State Univ., Stillwater, OK (Pagilla, P.R.; Siraskar, N.B.; Dwivedula, R.V.)
Abstract	The focus of the research is on the design of a decentralized controller for web processing lines that provide improved web tension regulation. First, an accurate dynamic model is developed for the unwind (rewind) roll in a web processing line by taking into account explicitly the time-varying nature of the roll inertia and its radius. The unwind (rewind) roll in a web processing line releases (accumulates) unfinished (finished) web to (from) the process section. Second, a strategy for computing the equilibrium control inputs and reference velocities for each driven roll/roller is given; this strategy is based on dividing the web processing line into tension zones and using the reference web tension of each zone and the reference velocity of the master speed roller which sets the desired web transport speed. Based on the new model developed, a decentralized controller is proposed. Variations in web tension and transport velocity in each tension zone are shown to asymptotically converge to zero. Extensive comparative experiments were conducted with the proposed decentralized controller and an often used decentralized PI controller in industry. A representative sample of the experimental results conducted on a large experimental web line, which mimics most of the features of an industrial process line, is shown and discussed
Starting Page	940
Ending Page	945
File Size	1671419
Page Count	6
File Format	PDF
ISBN	0780393546
DOI	10.1109/CCA.2005.1507250
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-08-28
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Distributed control Vehicle dynamics Manufacturing industries Strips Mathematical model Velocity control Manufacturing processes Aerospace materials Automotive materials Automobile manufacture
Content Type	Text
Resource Type	Article

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