JPH0792380B2 - Shape detection method for rolled material - Google Patents
Shape detection method for rolled materialInfo
- Publication number
- JPH0792380B2 JPH0792380B2 JP3226091A JP22609191A JPH0792380B2 JP H0792380 B2 JPH0792380 B2 JP H0792380B2 JP 3226091 A JP3226091 A JP 3226091A JP 22609191 A JP22609191 A JP 22609191A JP H0792380 B2 JPH0792380 B2 JP H0792380B2
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- rolled material
- shape
- detected
- eel
- 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
Links
- 239000000463 material Substances 0.000 title claims description 19
- 238000001514 detection method Methods 0.000 title claims description 16
- 238000000034 method Methods 0.000 claims description 9
- 230000035945 sensitivity Effects 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、圧延機により圧延され
た圧延材に形状検出ローラを接触させて回転させながら
その形状を検出する圧延材の形状検出方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting the shape of a rolled material, which detects the shape of a rolled material rolled by a rolling mill while contacting and rotating the shape detecting roller.
【０００２】[0002]
【従来の技術】アルミ材等の金属箔を圧延機で圧延した
後、その圧延材1の幅方向の形状を検出する場合、図５
に示すように、回転方向に所定角度（例えば40度) ずら
せてセンサ2 を配置したディスク3 を回転軸4 の軸心方
向に複数個積層して成る形状検出ローラ5 を用いる。こ
の形状検出ローラ5 を圧延材1 に接触させて回転させる
と、その張力によって発生するラジアル荷重に比例した
信号が、図６に示すように、各ディスク3 の回転毎に各
センサ2 から出力されるので、この信号から圧延材1 の
形状を計算する。2. Description of the Related Art When a metal foil such as an aluminum material is rolled by a rolling mill and then the shape of the rolled material 1 in the width direction is detected, the method shown in FIG.
As shown in FIG. 5, a shape detection roller 5 is used which is formed by stacking a plurality of disks 3 each having a sensor 2 arranged at a predetermined angle (for example, 40 degrees) in the rotation direction in the axial direction of a rotation shaft 4. When this shape detection roller 5 is brought into contact with the rolled material 1 and rotated, a signal proportional to the radial load generated by the tension is output from each sensor 2 for each rotation of each disk 3, as shown in FIG. Therefore, the shape of rolled material 1 is calculated from this signal.
【０００３】しかし、形状検出ローラ5 は、熱による膨
張等を伴なうため、図７に示すようにドリフトが発生す
る。即ち、圧延材1 は圧延機で圧延されることにより温
度が上昇する。このため圧延材1 に直接接触して回転す
る形状検出ローラ5 が、圧延材1 の熱の影響を受けて熱
膨張を起こし、各センサ2 はその熱膨張に比例した大き
さの信号を含む。これがドリフトである。なお、この熱
膨張は、圧延の初期に顕著に起こる。However, since the shape detecting roller 5 is accompanied by expansion due to heat, etc., drift occurs as shown in FIG. That is, the temperature of rolled material 1 rises as it is rolled by the rolling mill. For this reason, the shape detection roller 5 rotating in direct contact with the rolled material 1 undergoes thermal expansion under the influence of the heat of the rolled material 1, and each sensor 2 includes a signal of a magnitude proportional to the thermal expansion. This is drift. Note that this thermal expansion remarkably occurs at the initial stage of rolling.
【０００４】そこで、従来は、 120度毎にセンサ2 を配
置しない部分（以下Ｎ点という) を設定し、このＮ点の
信号からドリフトを算出し除去する方法を採っている。
一方、近年、形状検出の精度を上げるため、センサ2 の
感度を上げる必要が生じている。しかし、センサ2 の感
度を上げた場合、図８に示すようにドリフト以外に正弦
波状のユラギが発生する。つまり、形状検出ローラ5
は、ローラ自体の重みにより生じる撓みによって力を受
ける。この力は、ローラの端部と中央部では大きさが異
なるため、個々のディスク3 からは回転に同期した正弦
波状の位相と振幅とを持った信号が発生する。この信号
がユラギである。ユラギは大きさが小さいため、センサ
2 の感度が低い場合には現われないが、感度を上げると
その影響が大きくなる。Therefore, conventionally, a method has been adopted in which a portion where the sensor 2 is not arranged (hereinafter referred to as N point) is set every 120 degrees, and drift is calculated and removed from the signal at this N point.
On the other hand, in recent years, it has become necessary to increase the sensitivity of the sensor 2 in order to improve the accuracy of shape detection. However, when the sensitivity of the sensor 2 is increased, a sinusoidal erratic wave is generated in addition to the drift as shown in FIG. That is, the shape detection roller 5
Receives a force due to the deflection caused by the weight of the roller itself. Since this force is different in magnitude between the end portion and the central portion of the roller, a signal having a sinusoidal phase and amplitude synchronized with the rotation is generated from each disk 3. This signal is Uragi. Due to the small size of Yuragi,
It does not appear when the sensitivity of 2 is low, but its effect increases as the sensitivity increases.
【０００５】従来は、このユラギの影響を少なくするた
め、センサ2 の感度をあまり上げず、ユラギを無視でき
る程度の大きさに調節し、ドリフトの除去を行うだけで
ラジアル荷重による信号を取出す方法を採っていた。Conventionally, in order to reduce the influence of this eel, the sensitivity of the sensor 2 is not raised so much, the eel is adjusted to a negligible size, and the signal due to the radial load is taken out only by removing the drift. Was taken.
【０００６】[0006]
【発明が解決しようとする課題】従来の方法では、ユラ
ギの影響があるため、センサ2 の感度をせいぜい２倍程
度しか上げることができず、精度の高い形状検出を行う
ことができない。しかし、近年の高精度化の要請から、
実際には５〜10倍のセンサ感度が必要である。これは、
圧延速度が遅い場合、センサ出力値が小さくなることか
ら、正確な形状検出ができないためである。従って、高
精度化を実現するためには、ユラギを正確に除去する技
術が必要である。In the conventional method, the sensitivity of the sensor 2 can be increased only by a factor of about 2 due to the influence of errata, and highly accurate shape detection cannot be performed. However, due to the demand for higher precision in recent years,
Actually, a sensor sensitivity of 5 to 10 times is required. this is,
This is because when the rolling speed is slow, the sensor output value becomes small, and accurate shape detection cannot be performed. Therefore, in order to achieve high accuracy, a technique for accurately removing the eel is required.
【０００７】本発明は、かかる従来の課題に鑑み、ユラ
ギを除去できる形状検出方法を提供することを目的とす
る。In view of the above conventional problems, it is an object of the present invention to provide a shape detecting method capable of removing eel.
【０００８】[0008]
【課題を解決するための手段】本発明は、センサ2 を回
転方向に所定角度ずらして配置したディスク3 を軸心方
向に複数個積層して成る形状検出ローラ5 を圧延材1 に
接触させて回転させ、各センサ2 からのラジアル荷重に
比例した信号により圧延材1 の形状を検出する方法にお
いて、所定角度の内、数箇所にセンサ2 を配置しない部
分を設けておき、形状検出ローラ5 の回転角度を検出
し、複数のセンサ2 を配置しない部分の角度におけるセ
ンサ出力値を検出し、その出力値からユラギの位相と振
幅とを演算し、この演算したユラギを除去するようにセ
ンサ2 の検出値を補正するものである。According to the present invention, a shape detecting roller 5 is formed by stacking a plurality of disks 3 in which a sensor 2 is displaced by a predetermined angle in a rotation direction and is stacked in an axial direction. In the method of rotating and detecting the shape of the rolled material 1 by a signal proportional to the radial load from each sensor 2, some parts of the predetermined angle where the sensor 2 is not placed are provided, and the shape detection roller 5 The rotation angle is detected, the sensor output value at the angle of the part where multiple sensors 2 are not arranged is detected, the phase and amplitude of the eel are calculated from the output values, and the sensor 2 is detected so as to remove the calculated eel. The detection value is corrected.
【０００９】[0009]
【作用】ユラギは周期性を持った正弦波状の信号である
ため、複数点の出力値からユラギを算出することができ
る。即ち、所定角度の内、数箇所にセンサ2 を配置しな
い部分を設けておき、形状検出ローラ5 の回転角度を検
出し、複数のセンサ2 を設けていない部分の角度におけ
るセンサ出力を検出する。従って、これらの部分のセン
サ出力値からユラギの位相と振幅とを演算することがで
きる。そして、この演算したユラギにより、センサ2 の
検出値を補正するので、センサ2 の感度を上げることが
でき、圧延速度が低速である時の形状検出の精度を上げ
ることができる。Since the eel is a sinusoidal signal having periodicity, the eel can be calculated from the output values of a plurality of points. That is, among the predetermined angles, a portion where the sensor 2 is not arranged is provided in several places, the rotation angle of the shape detecting roller 5 is detected, and the sensor output at the angle of the portion where the plurality of sensors 2 are not provided is detected. Therefore, the phase and amplitude of the eel can be calculated from the sensor output values of these portions. Then, since the detected value of the sensor 2 is corrected by the calculated irregularity, the sensitivity of the sensor 2 can be increased and the accuracy of shape detection when the rolling speed is low can be improved.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面に基づいて詳述
する。この実施例では、センサ2 を配置する所定角度を
40度とし、配置しない角度を120度毎とする。図２に示
すように、センサ2 の信号を検出する点をＰx 、センサ
2 を配置しない角度（Ｎ点) からの出力値をP0 ,P3，P6
とし、ラジアル荷重に比例した信号をＬ、ユラギの波形
をＷ、ユラギの振幅をＤ、ユラギの位相をθ、オフセッ
トをＦとすると、各Ｎ点からのデータより、Embodiments of the present invention will now be described in detail with reference to the drawings. In this embodiment, the predetermined angle to place the sensor 2
The angle is 40 degrees, and the non-arranged angle is every 120 degrees. As shown in FIG. 2, the point where the signal of the sensor 2 is detected is Px, the sensor
The output value from the angle (N point) where 2 is not arranged is P 0 , P 3 , P 6
Let L be a signal proportional to the radial load, W the waveform of the eel, D the amplitude of the eel, θ the phase of the eel, and F the offset, then from the data from each N point,
【００１１】[0011]
【数１】 [Equation 1]
【００１２】となる。(1)(2)(3) 式からＦを消去する
と、[0012] Eliminating F from equations (1) (2) (3) gives
【００１３】[0013]
【数２】 [Equation 2]
【００１４】となり、ユラギを算出することができる。
そこで、実際の圧延材1 の形状を検出する場合には、形
状検出ローラ5 を圧延材1 に直接接触させて回転させ
る。そして、形状検出ローラ5 の回転角度を検出する一
方、図１に示すようにセンサ2 からの信号を受信し（ス
テップ) 、各Ｎ点の出力値P0 ,P3，P6を検出する（ス
テップ) 。そして、このＮ点の出力値P0,P3，P6を用
いて直線補間を行い、図３に示すようにドリフトを除去
する（ステップ) 。Thus, the uragi can be calculated.
Therefore, when the actual shape of the rolled material 1 is detected, the shape detection roller 5 is brought into direct contact with the rolled material 1 and rotated. Then, while detecting the rotation angle of the shape detecting roller 5, the signal from the sensor 2 is received as shown in FIG. 1 (step), and the output values P 0 , P 3 , P 6 at each N point are detected ( Step). Then, linear interpolation is performed using the output values P 0 , P 3 , and P 6 at the N points to remove the drift as shown in FIG. 3 (step).
【００１５】続いてＮ点の出力値P0 ,P3，P6から前述の
計算式に基づいてユラギの位相θと振幅Ｗとオフセット
Ｆを演算する（ステップ）。そして、この演算したユ
ラギ及びオフセットによりセンサ2の検出値を補正し
（ステップ）、それらを除去する。従って、ドリフト
を除去したセンサ出力値より、ユラギとオフセットを除
去すると、図４に示すようにラジアル荷重に比例した信
号のみを取出すことができるので、この信号に基づいて
圧延材1 の形状を計算した後（ステップ）、圧延終了
か否かを判断すれば良い（ステップ）。Then, the phase θ, the amplitude W and the offset F of the eel are calculated from the output values P 0 , P 3 and P 6 at the N points based on the above-mentioned calculation formula (step). Then, the detected values of the sensor 2 are corrected (step) by the calculated irregularities and offsets to remove them. Therefore, if the fluctuation and the offset are removed from the sensor output value after the drift is removed, only the signal proportional to the radial load can be taken out as shown in Fig. 4, and the shape of the rolled material 1 is calculated based on this signal. After that (step), it may be determined whether or not the rolling is completed (step).
【００１６】なお、上記実施例では、センサ配置角度を
40度としているが、20度や30度等、センサを配置しない
部分が１回転中に３点以上存在するようにしてもユラギ
を求めることができる。また、計算方法にフーリエ展開
等の数式を利用しても、ユラギを計算することができ
る。In the above embodiment, the sensor arrangement angle is
Although it is set to 40 degrees, the unevenness can be obtained even if there are three or more points where the sensor is not arranged such as 20 degrees and 30 degrees during one rotation. Further, it is possible to calculate the uragi by using a mathematical expression such as Fourier expansion as the calculation method.
【００１７】[0017]
【発明の効果】本発明によれば、所定角度の内、数箇所
にセンサ2 を配置しない部分を設けておき、形状検出ロ
ーラ5 の回転角度を検出し、複数のセンサ2 を配置しな
い部分の角度におけるセンサ出力値を検出し、その出力
値からユラギの位相と振幅とを演算し、この演算したユ
ラギによりセンサ2 の検出値を補正するので、センサ2
の感度を上げることが可能となり、圧延速度が低速の時
でも精度の高い形状検出ができる。According to the present invention, a portion where the sensor 2 is not arranged is provided in several places within the predetermined angle, the rotation angle of the shape detecting roller 5 is detected, and a portion where the plurality of sensors 2 are not arranged is detected. The sensor output value at the angle is detected, the phase and amplitude of the eel are calculated from the output value, and the detected value of sensor 2 is corrected by this calculated eel.
It is possible to increase the sensitivity of, and it is possible to detect the shape with high accuracy even when the rolling speed is low.
【図１】本発明の一実施例を示す形状検出のフローチャ
ートである。FIG. 1 is a flowchart of shape detection showing an embodiment of the present invention.
【図２】ユラギを含んだセンサ出力値の波形図である。FIG. 2 is a waveform diagram of sensor output values including eel.
【図３】ドリフト除去後のセンサ出力値の波形図であ
る。FIG. 3 is a waveform diagram of sensor output values after drift removal.
【図４】ユラギ、オフセット除去後のセンサ出力値の波
形図である。FIG. 4 is a waveform diagram of sensor output values after erasure and offset removal.
【図５】圧延材の形状検出法を示す一部破断斜視図であ
る。FIG. 5 is a partially cutaway perspective view showing a method for detecting the shape of a rolled material.
【図６】センサ出力値の波形図である。FIG. 6 is a waveform diagram of sensor output values.
【図７】ドリフトを含んだセンサ出力値の波形図であ
る。FIG. 7 is a waveform diagram of sensor output values including drift.
【図８】ドリフト、ユラギを含んだセンサ出力値の波形
図である。FIG. 8 is a waveform diagram of sensor output values including drift and errata.
１ 圧延材 ２ センサ ３ ディスク ５ 形状検出ローラ Ｌ ラジアル荷重に比例した信号 Ｗ ユラギの波形 Ｄ ユラギの振幅 θ ユラギの位相 Ｆ オフセット 1 Rolled material 2 Sensor 3 Disc 5 Shape detection roller L Signal proportional to radial load W Waveform of Euragi D Amplitude of Euragi θ Phase of Euragi F Offset
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０１Ｌ 5/04 Ｂ (56)参考文献 特開 昭62−47530（ＪＰ，Ａ) 特開 平１−191027（ＪＰ，Ａ)─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location G01L 5/04 B (56) References JP 62-47530 (JP, A) JP 1 -191027 (JP, A)
Claims (1)
て配置したディスク(3) を軸心方向に複数個積層して成
る形状検出ローラ(5)を圧延材(1) に接触させて回転さ
せ、各センサ(2) からのラジアル荷重に比例した信号に
より圧延材(1) の形状を検出する方法において、所定角
度の内、数箇所にセンサ(2) を配置しない部分を設けて
おき、形状検出ローラ(5) の回転角度を検出し、複数の
センサ(2) を配置しない部分の角度におけるセンサ出力
値を検出し、その出力値からユラギの位相と振幅とを演
算し、この演算したユラギを除去するようにセンサ(2)
の検出値を補正することを特徴とする圧延材の形状検出
方法。1. A shape detection roller (5) comprising a plurality of discs (3) having sensors (2) displaced in a rotational direction at a predetermined angle from each other and brought into contact with a rolled material (1). In the method of detecting the shape of the rolled material (1) by rotating it and using a signal proportional to the radial load from each sensor (2), the part where the sensor (2) is not arranged is provided at several places within the specified angle. , The rotation angle of the shape detection roller (5) is detected, the sensor output value at the angle of the part where multiple sensors (2) are not arranged is detected, and the phase and amplitude of the eel are calculated from the output value. A sensor to remove the sloppy eel (2)
A method for detecting the shape of a rolled material, characterized by correcting the detected value of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3226091A JPH0792380B2 (en) | 1991-09-05 | 1991-09-05 | Shape detection method for rolled material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3226091A JPH0792380B2 (en) | 1991-09-05 | 1991-09-05 | Shape detection method for rolled material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0560549A JPH0560549A (en) | 1993-03-09 |
| JPH0792380B2 true JPH0792380B2 (en) | 1995-10-09 |
Family
ID=16839685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3226091A Expired - Lifetime JPH0792380B2 (en) | 1991-09-05 | 1991-09-05 | Shape detection method for rolled material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0792380B2 (en) |
-
1991
- 1991-09-05 JP JP3226091A patent/JPH0792380B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0560549A (en) | 1993-03-09 |
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