JP2909542B2 - Plate shape control device of multi-high rolling mill and monitoring device using the device - Google Patents

Plate shape control device of multi-high rolling mill and monitoring device using the device

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Publication number
JP2909542B2
JP2909542B2 JP2315098A JP31509890A JP2909542B2 JP 2909542 B2 JP2909542 B2 JP 2909542B2 JP 2315098 A JP2315098 A JP 2315098A JP 31509890 A JP31509890 A JP 31509890A JP 2909542 B2 JP2909542 B2 JP 2909542B2
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JP
Japan
Prior art keywords
plate shape
rolling mill
shape
control
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2315098A
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Japanese (ja)
Other versions
JPH04187312A (en
Inventor
久幸 松本
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Hitachi Ltd
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Hitachi Ltd
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Publication date
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Priority to JP2315098A priority Critical patent/JP2909542B2/en
Publication of JPH04187312A publication Critical patent/JPH04187312A/en
Application granted granted Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、多段式圧延機設備における板形状制御装置
と板形状効果をビジュアルにかつ定量的に表示できる形
状監視装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate shape control device and a shape monitoring device capable of visually and quantitatively displaying a plate shape effect in a multi-stage rolling mill facility.

〔従来の技術〕[Conventional technology]

従来の多段式圧延機の板形状装置においては、多段式
圧延機出側に設置された形状検出器により形状を検出
し、その検出値で圧延機のロールベンダ及びロールバラ
ンスを制御し、規定の板形状を得ようとするフィードバ
ック制御であった。In the conventional plate shape device of a multi-stage rolling mill, the shape is detected by a shape detector installed on the exit side of the multi-stage rolling mill, and the roll bender and roll balance of the rolling mill are controlled based on the detected value, and a specified value is obtained. The feedback control was intended to obtain a plate shape.

また、板形状監視装置においては、特開昭63−160712
号公報に記載のように、入側および出側検出器を用い
て、入側板厚と出側板厚に関し、速度軸をパラメータに
して周波数分析をし、板厚制御を行うものであった。た
だしこれは、板厚制御方法に関するものであり、また表
示方式については言及されていない。Further, in the plate shape monitoring device, Japanese Patent Application Laid-Open No. 63-160712
As described in the publication, frequency analysis is performed on the inlet-side plate thickness and the outlet-side plate thickness using the speed axis as a parameter using the inlet-side and outlet-side detectors, and the plate thickness is controlled. However, this relates to a thickness control method, and does not mention a display method.

〔発明が解決しようとする課題〕[Problems to be solved by the invention]

従来の多段式圧延機の板形状制御装置にあっては、出
側形状検出器で検出された板形状を多次関数近似しかつ
パラメータ変換することにより形状パターン認識し、圧
延機により板形状を制御するというフィードバック制御
であるが、これは同形状の板が連続あるいは周期的に圧
延されるという前提に立ったものであり、連続あるいは
周期的によらない板圧延に対しては配慮がなされておら
ず、逆に現在の制御を行なうと、さらに板形状を悪化さ
せてしまうという問題があった。In a conventional plate shape control device of a multi-stage rolling mill, a shape pattern is recognized by approximating a plate shape detected by a delivery shape detector by a multi-order function and converting parameters, and the plate shape is recognized by a rolling mill. The feedback control is based on the premise that sheets of the same shape are continuously or periodically rolled, and attention is paid to strip rolling that is not continuous or periodic. On the contrary, if the current control is performed, there is a problem that the plate shape is further deteriorated.

本発明の目的は、圧延機に入側形状検出器を設置し、
検出した板形状と、その板形状に対する圧延機の制御量
と、圧延機出側の板形状とを比較し、出側の板形状が最
適となるように補正する多段式圧延機の板形状制御装置
を提供することにある。An object of the present invention is to install an entrance shape detector in a rolling mill,
The plate shape control of a multi-stage rolling mill that compares the detected plate shape, the control amount of the rolling mill with respect to the plate shape, and the plate shape on the delivery side of the rolling mill, and corrects the plate shape on the delivery side to be optimal. It is to provide a device.

また、本発明の他の目的は、入側形状検出器による板
形状と、その板形状に対する圧延機の制御量および出側
検出器位置における板形状を、速度軸をパラメータとし
て重ね合せることができる形状表示器を設け、オペレー
タに対し、ビジュアルにかつ定量的に板形状を表示し、
圧延機制御が最適かあるいは制御タイミングのズレがあ
るかを知らせることのできる板形状監視装置を提供する
ことにある。Further, another object of the present invention is to superimpose the plate shape by the entrance shape detector, the control amount of the rolling mill on the plate shape, and the plate shape at the exit detector position using the speed axis as a parameter. A shape display is provided to visually and quantitatively display the plate shape to the operator,
It is an object of the present invention to provide a plate shape monitoring device capable of notifying whether the control of a rolling mill is optimal or the control timing is shifted.

〔課題を解決するための手段〕[Means for solving the problem]

本発明に係る多段式圧延機の板形状制御装置は、多段
式圧延機の出側で板形状を検出して演算し板形状を認識
する出側板形状認識手段と、出側板形状認識手段に接続
し多段式圧延機に制御量を出力する板形状制御出力手段
とを備えた多段式圧延機の板形状制御装置において、多
段式圧延機の入側に入側板形状認識手段を設け、入側及
び出側の板形状を圧延速度をパラメータとして同一測定
位置で比較しその偏差により補正値を演算する手段を出
側板形状認識手段に付設し、制御量を補正値で補正する
構成である。The plate shape control device for a multi-stage rolling mill according to the present invention is connected to an output-side plate shape recognition means for detecting and calculating a plate shape on the output side of the multi-stage rolling mill and recognizing the plate shape, and an output-side plate shape recognition means. And in the plate shape control device of the multi-stage rolling mill provided with a plate shape control output means that outputs a control amount to the multi-stage rolling mill, the input side plate shape recognition means is provided on the input side of the multi-stage rolling mill, the input side and Means for comparing the exit side plate shape at the same measurement position using the rolling speed as a parameter and calculating a correction value based on the deviation is attached to the exit side plate shape recognition unit, and the control amount is corrected with the correction value.

そして多段式圧延機の板形状制御装置においては、多
段式圧延機の入側及び出側で板形状を検出して演算し板
形状を認識する入側板形状認識手段及び出側板形状認識
手段と、入側及び出側の板形状を圧延速度をパラメータ
として同一圧延位置で比較しその偏差により演算された
補正値で制御量を補正して多段式圧延機に出力する板形
状制御出力手段とよりなる装置に、入側板形状認識手段
及び出側板形状認識手段のぞれぞれに入側板形状及び出
側板形状を圧延速度をパラメータとして表示する表示手
段と、板形状制御出力手段の制御量を表示する制御量表
示手段とを具備した構成である。And in the plate shape control device of the multi-stage rolling mill, the input side plate shape recognition means and the output side plate shape recognition means for detecting and calculating the plate shape on the entrance and exit sides of the multi-stage rolling mill and recognizing the plate shape, A plate shape control output means for comparing the plate shapes on the inlet side and the outlet side at the same rolling position using the rolling speed as a parameter, correcting the control amount with a correction value calculated based on the deviation, and outputting the corrected amount to the multi-high rolling mill. The display unit displays the incoming plate shape and the outgoing plate shape with the rolling speed as a parameter, and the control amount of the plate shape control output unit is displayed on the apparatus. And a control amount display means.

〔作用〕[Action]

本発明の多段式圧延機の板形状制御装置によれば、入
側及び出側の板形状を比較し演算した補正値により、制
御量が補正されるため、板形状がフィードフォワード的
に制御される、そして認識した板形状のパターンが似て
いる場合は、次回より前記補正値が出力される。According to the plate shape control device of the multi-high rolling mill of the present invention, the control amount is corrected by the correction value calculated by comparing the inlet and outlet plate shapes, so that the plate shape is controlled in a feedforward manner. If the recognized plate shape pattern is similar, the correction value is output from the next time.

また、多段式圧延機の板形状監視装置によれば、表示
手段により、入側及び出側の板形状及び制御量を表示す
るため、板形状制御効果がビジュアルでかつ定量的とな
る。Further, according to the plate shape monitoring device of the multi-high rolling mill, the display means displays the plate shape and the control amount on the entrance side and the exit side, so that the plate shape control effect is visual and quantitative.

〔実施例〕〔Example〕

以下、本発明の一実施例を第１図を参照しながら説明
する。Hereinafter, an embodiment of the present invention will be described with reference to FIG.

第１図に示すように、入側板形状検出器１と、多段式
圧延機２と、出側板形状検出器３とを備え、入側板形状
は、入側板形状検出器１により検出され、その検出値は
多次関数近似演算器４により多次関数に近似される、さ
らにこの多次関数は、形状認識装置６により板幅方向に
正規化されかつ形状認識される。また、形状制御演算器
８には、板厚、板幅及び圧延荷重の圧延スケジュールよ
り、形状制御ゲイン、ロールベンディング力及びクーラ
ンドゾーン等がセットアップデータとしてあらかじめロ
ードされており、形状認識装置６で認識した板形状に最
も適した形状を多段式圧延機２で制御できるように、ロ
ールベンディング力、圧延荷重及びロールシフト量等の
制御量を演算する。この制御量は形状制御出力装置（板
形状制御出力手段）９によって入側形状検出器１で検出
した板が、多段式圧延機２を通過する際に出力され板形
状制御が行われる。また、一方この圧延された板が、出
側形状検出器３を通過する際、その板形状を多次関数近
似演算器で近似し、さらに形状認識装置７により形状認
識される。この認識された板形状は、形状認識装置６に
よりあらかじめ認識されている形状と、速度をパラメー
タとして、板の同位置で比較し、その偏差は、形状制御
補正値演算器（演算する手段）10により補正値として演
算されるが、これは入側形状認識装置６により認識した
板形状のパターンが似ている場合のみ、次回より形状制
御出力装置９に補正値として出力され、また、多段式圧
延機２に制御量補正として出力される。なお、板の同位
置で比較するとは、入側形状検出器１と出側形状検出器
３との間に距離があるため、任意の板形状測定点は、入
側形状検出器１を通過後、出側計検出器３で測定される
までトラッキングを介して実行される。このトラッキン
グには、板の圧延速度及び多段式圧延機２での圧下によ
る出側の板圧延速度の先進率補正も考慮されている。ま
た、認識した板形状のパターンが似ているとは、Edge w
avy,center bucle,W形状及びＭ形状の４種のパターンに
分類した時、同一パターンの分類に入ることを意味し、
実際には、計算機内部では、多次関数近似演算機４で、
多次関数近似された板形状の多次関数式の係数の比較に
より認識している。As shown in FIG. 1, an entrance side plate shape detector 1, a multi-stage rolling mill 2, and an exit side plate shape detector 3 are provided, and the entrance side plate shape is detected by the entrance side plate shape detector 1 and detected. The value is approximated to a multi-order function by a multi-order function approximation calculator 4, and the multi-order function is normalized by the shape recognition device 6 in the plate width direction and the shape is recognized. Further, the shape control gain, the roll bending force, the coolant zone, and the like from the rolling schedule of the sheet thickness, the sheet width, and the rolling load are previously loaded in the shape control calculator 8 as setup data. Control amounts such as roll bending force, rolling load, and roll shift amount are calculated so that the multi-stage rolling mill 2 can control the shape most suitable for the recognized plate shape. This control amount is output by the shape control output device (plate shape control output means) 9 when the plate detected by the input side shape detector 1 passes through the multi-high rolling mill 2, and the plate shape is controlled. On the other hand, when the rolled plate passes through the exit shape detector 3, the plate shape is approximated by a multi-order function approximation calculator, and the shape is recognized by the shape recognition device 7. The recognized plate shape is compared with the shape previously recognized by the shape recognition device 6 at the same position of the plate using the speed as a parameter, and the deviation is calculated by a shape control correction value calculator (means for calculating) 10. Is output as a correction value to the shape control output device 9 from the next time only when the pattern of the plate shape recognized by the entry-side shape recognition device 6 is similar. Output to the machine 2 as a control amount correction. Note that comparing at the same position of the plate means that since there is a distance between the entrance shape detector 1 and the exit shape detector 3, an arbitrary plate shape measurement point is determined after passing through the entrance shape detector 1. , Until it is measured by the exit meter 3. This tracking also takes into account the advance rate correction of the sheet rolling speed on the delivery side due to the reduction in the plate rolling speed and the multi-stage rolling mill 2. In addition, it is Edge w
avy, center bucle, W-shaped and M-shaped when classified into 4 types of patterns
Actually, inside the calculator, the multi-order function approximation calculator 4
The recognition is made by comparing the coefficients of the multi-order function formula of the plate shape approximated by the multi-order function.

なお、入側板形状認識手段は、入側形状検出器１と、
多次関数近似演算器４と、形状認識装置６とにより構成
され、出側板形認識手段は、同様に3,5,7により構成さ
れる。この実施例によれば、入側で認識した板形状に対
し、フィードフォワード的に多段式圧延機により板形状
が制御できるため、従来の板形状制御装置に比較し大幅
な形状効果ができる。The entrance-side plate shape recognition means includes an entrance-side shape detector 1,
The multi-function approximation unit 4 and the shape recognition device 6 are provided, and the output side plate shape recognition means is similarly configured by 3, 5, and 7. According to this embodiment, the plate shape recognized on the entry side can be controlled in a feedforward manner by a multi-stage rolling mill, so that a significant shape effect can be obtained as compared with a conventional plate shape control device.

さらに、出側板形状との比較を行い、この偏差に対す
る制御量の補正値は、再度、類似板形状が圧延される際
に出力されるため、目標とする板形状に対し良好な効果
が得られる。本実施例の効果としては、従来のフィード
バックのみの形状制御に対し、特に、非周期に形状が変
わるような板材の圧延に対しては、形状制御補正値演算
器10から出力することができる、すなわちフィードフォ
ワード的に制御することが可能となったため、制御結果
が発散するというようなことはなくなった。また、周期
的に、形状が変わる板材に対しては学習制御をかけるこ
とにより急峻度で、20％程度の効果を上げることができ
た。Further, a comparison with the exit side plate shape is performed, and the correction value of the control amount for this deviation is output again when a similar plate shape is rolled, so that a favorable effect on the target plate shape can be obtained. . As an effect of the present embodiment, as compared to the conventional shape control using only feedback, in particular, for rolling of a sheet material whose shape changes aperiodically, it can be output from the shape control correction value calculator 10. That is, since control can be performed in a feed-forward manner, the control result does not diverge. In addition, the effect of about 20% was able to be improved with the steepness by applying the learning control to the plate material whose shape changes periodically.

本発明の他の実施例を第２図を参照しながら説明す
る。第２図はオペレータにビジュアルに制御効果を知ら
せることができる板形状監視装置を、第１図の実施例に
付加したものである。この実施例においては、入側形状
表示器（表示手段）11は、入側板形状を、出側形状表示
器（表示手段）13は、出側板形状を、形状制御量表示器
（制御量表示手段）は、入側板形状に対する多段式圧延
機の形状制御量を表示することができるが、これらは、
圧延速度をパラメータとして多段式圧延機出側の板の入
側と同一位置を表示するものである。また、目標板形状
表示器14は、セットアップデータによる目標板形状を表
示する。そして、目標板形状偏差表示器15は、実圧延板
形状と目標板形状との偏差を表示する。なお、これらも
圧延速度をパラメータとして同一圧延位置を表示するの
は、前述の通りである。さらに、板形状表示器11〜15
は、表示内容を任意の表示器に出力、あるいは重ね合せ
表示が可能である。また、本監視装置に従いオペレータ
が多段式圧延機の板形状制御補正を行った時、類似の板
形状圧延に対し補正値として出力される。Another embodiment of the present invention will be described with reference to FIG. FIG. 2 is a diagram in which a plate shape monitoring device capable of visually notifying an operator of a control effect is added to the embodiment of FIG. In this embodiment, the entrance shape display (display means) 11 has an entrance plate shape, the exit shape display (display means) 13 has an exit plate shape, and a shape control amount display (control amount display means). ) Can indicate the shape control amount of the multi-high rolling mill with respect to the input side plate shape.
The same position as the entry side of the sheet on the exit side of the multi-stage rolling mill is displayed using the rolling speed as a parameter. The target plate shape display 14 displays the target plate shape based on the setup data. Then, the target plate shape deviation indicator 15 displays the deviation between the actual rolled plate shape and the target plate shape. As described above, the same rolling position is displayed using the rolling speed as a parameter as described above. Furthermore, plate shape indicators 11 to 15
Can output the display contents to an arbitrary display or superimpose the display. Further, when the operator performs plate shape control correction of a multi-stage rolling mill according to the monitoring device, a correction value is output as a correction value for a similar plate shape rolling.

本発明によれば、オペレータは、ビジュアルかつ、定
量的に形状制御効果を知ることが可能となる。従って、
オペレータは、この偏差をロギングすることにより、容
易に制御偏差要因を把握することが可能となり、板形状
制御出力装置の出力タイミング補正及び形状制御演算器
の定数補正等が可能となり、これによりさらに目標最適
板形状の圧延ができる。According to the present invention, the operator can visually and quantitatively know the shape control effect. Therefore,
By logging this deviation, the operator can easily grasp the cause of the control deviation, and can correct the output timing of the plate shape control output device and the constant correction of the shape control arithmetic unit. Rolling of optimal plate shape is possible.

なお、板形状認識としては、Edge wavy,Center buckl
e W−形状及びＭ−形状の４種に大別できるが、実施例
については、各々を区分別けし板形状制御を行ってい
る。In addition, as the board shape recognition, Edge wavy, Center buckl
e It can be roughly classified into four types of W-shape and M-shape. In the embodiment, the plate shape is controlled by dividing each of them.

〔発明の効果〕〔The invention's effect〕

本発明の多段式圧延機の板形状制御装置によれば、非
周期に板形状が変化する板材の圧延に対しては、制御量
の補正が可能となり、周期的に板形状が変化する板材に
対しては、補正値を出力して目標とする板形状に効率良
く制御できる。According to the plate shape control device of the multi-stage rolling mill of the present invention, it is possible to correct the control amount for rolling of a plate material whose plate shape changes aperiodically, and to change the plate shape periodically. On the other hand, a correction value can be output to efficiently control a target plate shape.

また、表示手段により、オペレータにビジュアルに制
御効果を知らせることができる。The display means can visually inform the operator of the control effect.

【図面の簡単な説明】[Brief description of the drawings]

第１図は本発明の一実施例を示す構成図、第２図は本発
明の他の実施例を示す構成図である。 １……入側形状検出器、２……多段式圧延機、 ３……出側形状検出器、 4,5……多次関数近接演算器、 6,7……形状認識装置、 ８……形状制御演算器、９……形状制御出力装置、 10……形状制御補正値演算器。FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Incoming shape detector, 2 ... Multi-stage rolling mill, 3 ... Outgoing shape detector, 4,5 ... Multi-order function proximity calculator, 6,7 ... Shape recognition device, 8 ... Shape control calculator, 9: Shape control output device, 10: Shape control correction value calculator.

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】多段式圧延機の出側で板形状を検出して演
算し該板形状を認識する出側板形状認識手段と、該出側
板形状認識手段に接続し前記多段式圧延機に制御量を出
力する板形状制御出力手段とを備えた多段式圧延機の板
形状制御装置において、前記多段式圧延機の入側に入側
板形状認識手段を設け、該入側及び前記出側の板形状を
圧延速度をパラメータとして同一測定位置で比較しその
偏差により補正値を演算する手段を前記出側板形状認識
手段に付設し、前記制御量を前記補正値で補正すること
を特徴とする多段式圧延機の板形状制御装置。1. An output side plate shape recognizing means for detecting and calculating a plate shape at an output side of a multi-stage rolling mill and recognizing the plate shape, and connected to the output side plate shape recognition means and controlled by the multi-stage rolling mill. A plate shape control device for a multi-stage rolling mill, comprising: a plate shape control output unit for outputting an amount; an input-side plate shape recognizing unit is provided on an input side of the multi-stage rolling mill, and the input side and the output side plate are provided. Means for comparing the shape at the same measurement position with the rolling speed as a parameter and calculating a correction value based on the deviation thereof is attached to the output side plate shape recognition means, and the control amount is corrected with the correction value. Plate shape control device for rolling mill. 【請求項２】多段式圧延機の入側及び出側で板形状を検
出して演算し該板形状を認識する入側板形状認識手段及
び出側板形状認識手段と、前記入側及び出側の板形状を
圧延速度をパラメータとして同一圧延位置で比較しその
偏差により演算された補正値で制御量を補正して前記多
段式圧延機に出力する板形状制御出力手段とよりなる装
置に、前記入側板形状認識手段及び前記出側板形状認識
手段のぞれぞれに入側板形状及び出側板形状を圧延速度
をパラメータとして表示する表示手段と、前記板形状制
御出力手段の前記制御量を表示する制御量表示手段とを
具備したことを特徴とする多段式圧延機の板形状監視装
置。2. An entrance side plate shape recognizing means and an exit side plate shape recognizing means for detecting and calculating a plate shape on an entrance side and an exit side of a multi-high rolling mill and recognizing the plate shape. The apparatus comprises plate shape control output means for comparing the plate shape at the same rolling position with the rolling speed as a parameter, correcting the control amount with a correction value calculated based on the deviation, and outputting the corrected value to the multi-stage rolling mill. Display means for displaying the incoming plate shape and the outgoing plate shape with the rolling speed as a parameter on each of the side plate shape recognizing means and the outgoing plate shape recognizing means; and control for displaying the control amount of the plate shape control output means. A plate shape monitoring device for a multi-high rolling mill, comprising a quantity display means.
JP2315098A 1990-11-20 1990-11-20 Plate shape control device of multi-high rolling mill and monitoring device using the device Expired - Lifetime JP2909542B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2315098A JP2909542B2 (en) 1990-11-20 1990-11-20 Plate shape control device of multi-high rolling mill and monitoring device using the device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2315098A JP2909542B2 (en) 1990-11-20 1990-11-20 Plate shape control device of multi-high rolling mill and monitoring device using the device

Publications (2)

Publication Number Publication Date
JPH04187312A JPH04187312A (en) 1992-07-06
JP2909542B2 true JP2909542B2 (en) 1999-06-23

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Application Number Title Priority Date Filing Date
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Country Link
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