JPS623605A - Method for recognizing shape in breadthwise direction of rolling material - Google Patents
Method for recognizing shape in breadthwise direction of rolling materialInfo
- Publication number
- JPS623605A JPS623605A JP60142715A JP14271585A JPS623605A JP S623605 A JPS623605 A JP S623605A JP 60142715 A JP60142715 A JP 60142715A JP 14271585 A JP14271585 A JP 14271585A JP S623605 A JPS623605 A JP S623605A
- Authority
- JP
- Japan
- Prior art keywords
- shape
- rolling material
- breadthwise direction
- output
- rolled material
- 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.)
- Granted
Links
Landscapes
- Control Of Metal Rolling (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は圧延機において、圧延材の形状の自動制御を行
うに際し、圧延材の幅方向の形状パターンを精度良く認
識する方法に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for accurately recognizing the shape pattern in the width direction of a rolled material when automatically controlling the shape of the rolled material in a rolling mill. .
（発明の背景）
圧延機において、圧延材の形状を自動制御する場合、一
般に圧延材の形状不良に応じてその形状修正のための操
作量を計算機により演算し、作業ロールの曲げ荷重を変
えてロールキャンバ−を制御する、所謂、ロールベンデ
ィング等の操作端を自動的に制御することが行われてい
る。(Background of the Invention) When automatically controlling the shape of a rolled material in a rolling mill, generally a computer calculates the amount of operation for correcting the shape depending on the shape of the rolled material, and then changes the bending load on the work rolls. Automatic control of an operating end for controlling roll camber, so-called roll bending, etc., has been carried out.
このような制御を行うに際して、まず、圧延材の幅方向
の形状パターンを認識する必要があり、そのための条件
として、
（ａ）、形状パターンの認識が充分な精度で行えること
。When performing such control, it is first necessary to recognize the shape pattern in the width direction of the rolled material, and the conditions for this are as follows: (a) The shape pattern must be recognized with sufficient accuracy.
（１）ｌ 、パラメータの数が少ないこと。(1) l, the number of parameters is small.
（Ｃ）、形状パターンの認識のための信号処理時間が短
いこと。(C) The signal processing time for shape pattern recognition is short.
等が要求される。etc. are required.
通常、前記形状パターンの認識は、形状検出装置によっ
て圧延材の幅方向における伸び率或いは急峻度等をプロ
ット的に検出して形状パターンを出力し、この出力を関
数化処理装置によって高次関数等で近似して行っている
が、板幅端部或いは中央部等、局部的に精度が十分でな
い場合が生じる。Normally, the shape pattern is recognized by using a shape detection device to detect the elongation rate or steepness in the width direction of the rolled material in a plotted manner and outputting the shape pattern. However, there may be cases where the accuracy is not sufficient locally, such as at the edge of the plate width or at the center.
このように、圧延材の幅方向の形状認識精度が十分でな
いと、計算機で演算した時に制御量の過不足が生じ、形
状不良が十分に修正できなかったり、異なった形の形状
不良を生じることがあり、次工程或いは使用用途上に問
題点が生じる。In this way, if the shape recognition accuracy in the width direction of the rolled material is not sufficient, the amount of control may be too large or too small when calculated by a computer, and shape defects may not be sufficiently corrected or a different shape defect may occur. This causes problems in the next process or in the intended use.
（発明の目的）
本発明はこのような問題点に鑑みてなされたもので、圧
延材の幅方向の形状認識が簡単且つ精度よく行え、次工
程或いは使用用途等の目的に適合する形状の圧延材を得
ることができる圧延材幅方向の形状認識方法を提供する
ものである。(Purpose of the Invention) The present invention was made in view of the above problems, and it is possible to easily and accurately recognize the shape of a rolled material in the width direction, and to roll the material into a shape that is suitable for the next process or purpose of use. The object of the present invention is to provide a method for recognizing the shape of a rolled material in the width direction.
（発明の構成）
上記目的を達成するために、本発明における圧延材の幅
方向形状認識方法は、圧延材の形状を自動制御するに際
して、圧延材の幅方向の形状パターンを形状検出装置か
らの出力を用いて関数近似にて認識する時に、圧延材の
幅方向の各位置の出力に夫々重み係数を持たせ、認識し
たい板幅部位に応じてその部位の重み係数を変化させる
ことを特徴とするもので、次工程或いは使用用途等によ
って圧延材の幅方向各部位の出力に異なる重み係数を設
定することにより、目的に応じた形状パターンを認識可
能にしたものである。(Structure of the Invention) In order to achieve the above object, the method for recognizing the shape in the width direction of a rolled material in the present invention detects the shape pattern in the width direction of the rolled material from a shape detection device when automatically controlling the shape of the rolled material. When recognizing by function approximation using the output, a weighting coefficient is given to the output at each position in the width direction of the rolled material, and the weighting coefficient for that part is changed depending on the part of the sheet width that is to be recognized. By setting different weighting coefficients for the output of each part in the width direction of the rolled material depending on the next process or intended use, it is possible to recognize a shape pattern according to the purpose.
（実施例の説明）
本発明の実施例を従来方法と比較しながら第１図〜第３
図に基づいて説明をする。(Explanation of Examples) Figures 1 to 3 compare examples of the present invention with conventional methods.
Explain based on the diagram.
圧延材の幅方向の形状パターンを高次関数等で近似する
のに最小２乗法を用いた場合、次に示す０式を最小にす
るように関数形を決定するのが従来の方法である。When the least squares method is used to approximate the shape pattern in the width direction of a rolled material using a high-order function, the conventional method is to determine the function form so as to minimize the following equation 0.
上式において、
ｘｉ：圧延材の幅方向位置、
”ｊｔ： ’χ２に対応する位置の伸び率或いは急峻度
等、
１：データ数、
ｔ（χ）：近似すべき関数。In the above equation, xi: position in the width direction of the rolled material, ``jt: elongation rate or steepness of the position corresponding to χ2, 1: number of data, t(χ): function to be approximated.
これに対して本発明の実施例においては、圧延材の幅方
向の形状パターンを形状検出装置からの出力を用いて関
数近似にて認識する際、圧延材の幅方向の各部位（位置
）の出力に夫々重み係数を持たせて次の■式のように表
し、 を最小にするように関数を決定する。On the other hand, in the embodiment of the present invention, when recognizing the shape pattern in the width direction of the rolled material by function approximation using the output from the shape detection device, each part (position) in the width direction of the rolled material is recognized. Each output has a weighting coefficient and is expressed as in the following formula (■), and the function is determined to minimize .
例えば、圧延材の端伸びの形状をより良く認識したい時
には、■式において圧延材の端部近傍の重み係数を大き
くし、又、圧延材の中伸び形状をより良く認識したい時
にはその中央部の重み係数を大きくするものである。For example, if you want to better recognize the edge elongation shape of a rolled material, increase the weighting coefficient near the end of the rolled material in equation This increases the weighting coefficient.
今、−例として、圧延材の幅方向における祁クォータ部
にビルドアップ状の伸びが発生した時の幅方向形状パタ
ーンを第１図に示す。この図は、形状検出装置からの出
力を伸び率に変換したのちの値をプロットしたものであ
る。As an example, FIG. 1 shows a shape pattern in the width direction when a build-up elongation occurs in the quarter portion in the width direction of a rolled material. This figure is a plot of values after converting the output from the shape detection device into elongation rates.
第１図に示す結果から、従来方法の上記０式により４次
関数で近似した値を示すと、第２図において実線Ａのよ
うになる。この場合、圧延材の幅方向のＯ３端部の方が
−Ｓ端部よりも伸び率で０．３４Ｘ１０大きくなり、こ
の時の非対称形状の制御不感帯は０．２ ＸＩＯであっ
たため、Ｈ端部の伸び率を大きくするように制御し、そ
の結果、第３図に示すようにＷＳ端部の方が伸びた形状
となった。From the results shown in FIG. 1, the values approximated by a quartic function using the above equation 0 in the conventional method are shown as a solid line A in FIG. In this case, the elongation rate of the O3 end in the width direction of the rolled material was 0.34X10 larger than the -S end, and the control dead zone of the asymmetric shape at this time was 0.2XIO, so the H end The elongation rate was controlled to be large, and as a result, the WS end had an elongated shape as shown in FIG.
一方、第１図に示す結果を、■式を用いて板幅方向の両
端部の重み係数を大きくして４次関数で近似した。その
結果を第２図において破線Ｂで示す。On the other hand, the results shown in FIG. 1 were approximated by a quartic function by increasing the weighting coefficients at both ends in the board width direction using equation (2). The results are shown by broken line B in FIG.
この場合、やはりＤＳ端部の方力１Ｓ端部よりも伸びた
形となったが、その伸び率は０．１４ Ｘ １０であっ
て非対称形状の制御不感帯である０、２ ＸＩＯの値内
に入り、そのため、制御は行われず両端部の形状を悪化
させることはない。In this case, the DS end was also more elongated than the 1S end, but the elongation rate was 0.14 X 10, which was within the value of 0.2 XIO, which is the control dead zone of the asymmetric shape. Therefore, no control is performed and the shape of both ends is not deteriorated.
（発明の効果）
以上のように本発明における圧延材の幅方向の形状認識
方法によれば、圧延材の幅方向の形状パターンを、形状
検出装置からの出力信号を用いて関数近似にて認識する
際に、圧延材の幅方向の各位置の出力に夫々の重み係数
を持たせ、目的に応じて重み係数を変化させることを特
徴とするものであるから、圧延材の所望位置の形状を簡
単且つ精度良く認識することができ、従って、次工程或
いは使用用途等の目的に合った圧延材が得られるもので
ある。(Effects of the Invention) As described above, according to the method for recognizing the shape in the width direction of a rolled material according to the present invention, the shape pattern in the width direction of the rolled material is recognized by function approximation using the output signal from the shape detection device. When doing so, the output at each position in the width direction of the rolled material is given a respective weighting coefficient, and the weighting coefficient is changed depending on the purpose. It can be recognized easily and accurately, and therefore a rolled material suitable for the purpose of the next process or intended use can be obtained.
第１図は形状検出装置の出カブロット図、第２図は本発
明の実施例と従来例による関数近似値図、第３図は従来
例の形状パターン図である。
Ａ・・・従来例の関数近似値線図
Ｂ・・・本発明による関数近似値線図。
第７ 図FIG. 1 is an output plot diagram of the shape detection device, FIG. 2 is a function approximation diagram according to an embodiment of the present invention and a conventional example, and FIG. 3 is a shape pattern diagram of the conventional example. A: Function approximation diagram of conventional example B: Function approximation diagram according to the present invention. Figure 7
Claims (1)
の形状パターンを形状検出装置からの出力を用いて関数
近似にて認識する時に、圧延材の幅方向の各位置の出力
に夫々重み係数を持たせ、認識したい板幅部位に応じて
その部位の重み係数を変化させることを特徴とする圧延
材の幅方向の形状認識方法。When automatically controlling the shape of a rolled material, when recognizing the shape pattern in the width direction of the rolled material using function approximation using the output from the shape detection device, a weighting coefficient is applied to the output at each position in the width direction of the rolled material. 1. A method for recognizing the shape of a rolled material in the width direction, the method comprising: changing the weighting coefficient of a part of the sheet width according to the part to be recognized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60142715A JPS623605A (en) | 1985-06-29 | 1985-06-29 | Method for recognizing shape in breadthwise direction of rolling material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60142715A JPS623605A (en) | 1985-06-29 | 1985-06-29 | Method for recognizing shape in breadthwise direction of rolling material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS623605A true JPS623605A (en) | 1987-01-09 |
| JPH0546882B2 JPH0546882B2 (en) | 1993-07-15 |
Family
ID=15321890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60142715A Granted JPS623605A (en) | 1985-06-29 | 1985-06-29 | Method for recognizing shape in breadthwise direction of rolling material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS623605A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187147A (en) * | 1986-02-13 | 1987-08-15 | 丸井産業株式会社 | Cement material |
| JPH02263106A (en) * | 1989-04-03 | 1990-10-25 | M Ii C Eng Service Kk | Automatic measuring facility for barge loaded earth amount |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS529482A (en) * | 1975-07-14 | 1977-01-25 | Toyo Kohan Co Ltd | Automatic flow detector of different thickness coated tin plate |
| JPS5810604A (en) * | 1981-07-13 | 1983-01-21 | Toshiba Corp | Plate thickness measuring apparatus |
| JPS58190709A (en) * | 1982-04-30 | 1983-11-07 | Kawasaki Steel Corp | Automatic high spot detecting method |
-
1985
- 1985-06-29 JP JP60142715A patent/JPS623605A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS529482A (en) * | 1975-07-14 | 1977-01-25 | Toyo Kohan Co Ltd | Automatic flow detector of different thickness coated tin plate |
| JPS5810604A (en) * | 1981-07-13 | 1983-01-21 | Toshiba Corp | Plate thickness measuring apparatus |
| JPS58190709A (en) * | 1982-04-30 | 1983-11-07 | Kawasaki Steel Corp | Automatic high spot detecting method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187147A (en) * | 1986-02-13 | 1987-08-15 | 丸井産業株式会社 | Cement material |
| JPH02263106A (en) * | 1989-04-03 | 1990-10-25 | M Ii C Eng Service Kk | Automatic measuring facility for barge loaded earth amount |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0546882B2 (en) | 1993-07-15 |
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