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Advanced set-up and control system for Dofasco's tandem cold mill
The new CPCM (coupled pickle line and cold mill), has been processing steel since December 1991 at Dofasco in Hamilton, USA. This mill rolls both sheet and tin plate. The work rolls for the last stand are often textured by grit blasting to roll "matte" finished strip. A new computer target...
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container_end_page | 2012 vol.3 |
container_issue | |
container_start_page | 2005 |
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container_volume | 2 |
creator | Sekiguchi, K. Seki, Y. Okitani, N. Fukuda, M. Critchley, S. Habib, G. Hartman, D.R. Shaw, K. |
description | The new CPCM (coupled pickle line and cold mill), has been processing steel since December 1991 at Dofasco in Hamilton, USA. This mill rolls both sheet and tin plate. The work rolls for the last stand are often textured by grit blasting to roll "matte" finished strip. A new computer targeted control system was developed for the roll speeds and gaps, specifically for matte rolling. The new set-up system uses Stone's model, which is more appropriate for the limited reductions evident with the rougher rolls. Conventional AGC systems using thickness measurements after the last stand are limited in performance by the long control loops. These limitations are particularly critical during mill acceleration and deceleration. The use of a thickness gauge before the stand with matte rolls allows the development of AGC systems using shorter control loops for final gauge control. The AGC system uses a Smith predictor for transport lag (phase shift) compensation. The combination of the shorter AGC loop and the Smith predictor allows higher gains to be used in the control system. This set-up and control system has contributed to Dofasco's position as a market leader in thickness performance.< > |
doi_str_mv | 10.1109/IAS.1994.377707 |
format | conference_proceeding |
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This mill rolls both sheet and tin plate. The work rolls for the last stand are often textured by grit blasting to roll "matte" finished strip. A new computer targeted control system was developed for the roll speeds and gaps, specifically for matte rolling. The new set-up system uses Stone's model, which is more appropriate for the limited reductions evident with the rougher rolls. Conventional AGC systems using thickness measurements after the last stand are limited in performance by the long control loops. These limitations are particularly critical during mill acceleration and deceleration. The use of a thickness gauge before the stand with matte rolls allows the development of AGC systems using shorter control loops for final gauge control. The AGC system uses a Smith predictor for transport lag (phase shift) compensation. The combination of the shorter AGC loop and the Smith predictor allows higher gains to be used in the control system. This set-up and control system has contributed to Dofasco's position as a market leader in thickness performance.< ></description><identifier>ISBN: 0780319931</identifier><identifier>ISBN: 9780780319936</identifier><identifier>DOI: 10.1109/IAS.1994.377707</identifier><language>eng</language><publisher>IEEE</publisher><subject>Acceleration ; Coils ; Control systems ; Milling machines ; Pickling ; Steel ; Strips ; Surface finishing ; Thickness control ; Tin</subject><ispartof>Proceedings of 1994 IEEE Industry Applications Society Annual Meeting, 1994, Vol.2, p.2005-2012 vol.3</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/377707$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,780,784,789,790,2058,4050,4051,27925,54920</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/377707$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Sekiguchi, K.</creatorcontrib><creatorcontrib>Seki, Y.</creatorcontrib><creatorcontrib>Okitani, N.</creatorcontrib><creatorcontrib>Fukuda, M.</creatorcontrib><creatorcontrib>Critchley, S.</creatorcontrib><creatorcontrib>Habib, G.</creatorcontrib><creatorcontrib>Hartman, D.R.</creatorcontrib><creatorcontrib>Shaw, K.</creatorcontrib><title>Advanced set-up and control system for Dofasco's tandem cold mill</title><title>Proceedings of 1994 IEEE Industry Applications Society Annual Meeting</title><addtitle>IAS</addtitle><description>The new CPCM (coupled pickle line and cold mill), has been processing steel since December 1991 at Dofasco in Hamilton, USA. 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This set-up and control system has contributed to Dofasco's position as a market leader in thickness performance.< ></description><subject>Acceleration</subject><subject>Coils</subject><subject>Control systems</subject><subject>Milling machines</subject><subject>Pickling</subject><subject>Steel</subject><subject>Strips</subject><subject>Surface finishing</subject><subject>Thickness control</subject><subject>Tin</subject><isbn>0780319931</isbn><isbn>9780780319936</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1994</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><recordid>eNotjz1rwzAYhAWl0DbNXOikrZNdSa_s1xpN-hUIdGgyB32Ci20FSy3k31eQ3nLHw3FwhDxwVnPO1PO2_6q5UrIGRGR4Re4YdgwKAn5D1il9syLZcCm6W9L37lfP1juafK5-TlTPjto45yWONJ1T9hMNcaEvMehk41OiuTQKtHF0dBrG8Z5cBz0mv_73FTm8ve43H9Xu83276XfVwFHkqlMMBKKxAFY7BCFdUEKCC6gDgAomaNe2LTad4YqrEqTlhhmhoXGtghV5vOwO3vvjaRkmvZyPl5PwBwvKRm8</recordid><startdate>1994</startdate><enddate>1994</enddate><creator>Sekiguchi, K.</creator><creator>Seki, Y.</creator><creator>Okitani, N.</creator><creator>Fukuda, M.</creator><creator>Critchley, S.</creator><creator>Habib, G.</creator><creator>Hartman, D.R.</creator><creator>Shaw, K.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>1994</creationdate><title>Advanced set-up and control system for Dofasco's tandem cold mill</title><author>Sekiguchi, K. ; Seki, Y. ; Okitani, N. ; Fukuda, M. ; Critchley, S. ; Habib, G. ; Hartman, D.R. ; Shaw, K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i172t-8903277bc33cad7324df9243df7af339fbfad666758b19196754c1b0b2a35d693</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Acceleration</topic><topic>Coils</topic><topic>Control systems</topic><topic>Milling machines</topic><topic>Pickling</topic><topic>Steel</topic><topic>Strips</topic><topic>Surface finishing</topic><topic>Thickness control</topic><topic>Tin</topic><toplevel>online_resources</toplevel><creatorcontrib>Sekiguchi, K.</creatorcontrib><creatorcontrib>Seki, Y.</creatorcontrib><creatorcontrib>Okitani, N.</creatorcontrib><creatorcontrib>Fukuda, M.</creatorcontrib><creatorcontrib>Critchley, S.</creatorcontrib><creatorcontrib>Habib, G.</creatorcontrib><creatorcontrib>Hartman, D.R.</creatorcontrib><creatorcontrib>Shaw, K.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library Online</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Sekiguchi, K.</au><au>Seki, Y.</au><au>Okitani, N.</au><au>Fukuda, M.</au><au>Critchley, S.</au><au>Habib, G.</au><au>Hartman, D.R.</au><au>Shaw, K.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Advanced set-up and control system for Dofasco's tandem cold mill</atitle><btitle>Proceedings of 1994 IEEE Industry Applications Society Annual Meeting</btitle><stitle>IAS</stitle><date>1994</date><risdate>1994</risdate><volume>2</volume><spage>2005</spage><epage>2012 vol.3</epage><pages>2005-2012 vol.3</pages><isbn>0780319931</isbn><isbn>9780780319936</isbn><abstract>The new CPCM (coupled pickle line and cold mill), has been processing steel since December 1991 at Dofasco in Hamilton, USA. This mill rolls both sheet and tin plate. The work rolls for the last stand are often textured by grit blasting to roll "matte" finished strip. A new computer targeted control system was developed for the roll speeds and gaps, specifically for matte rolling. The new set-up system uses Stone's model, which is more appropriate for the limited reductions evident with the rougher rolls. Conventional AGC systems using thickness measurements after the last stand are limited in performance by the long control loops. These limitations are particularly critical during mill acceleration and deceleration. The use of a thickness gauge before the stand with matte rolls allows the development of AGC systems using shorter control loops for final gauge control. The AGC system uses a Smith predictor for transport lag (phase shift) compensation. The combination of the shorter AGC loop and the Smith predictor allows higher gains to be used in the control system. This set-up and control system has contributed to Dofasco's position as a market leader in thickness performance.< ></abstract><pub>IEEE</pub><doi>10.1109/IAS.1994.377707</doi></addata></record> |
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identifier | ISBN: 0780319931 |
ispartof | Proceedings of 1994 IEEE Industry Applications Society Annual Meeting, 1994, Vol.2, p.2005-2012 vol.3 |
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language | eng |
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source | IEEE Electronic Library (IEL) Conference Proceedings |
subjects | Acceleration Coils Control systems Milling machines Pickling Steel Strips Surface finishing Thickness control Tin |
title | Advanced set-up and control system for Dofasco's tandem cold mill |
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