JPH0324963B2 - - Google Patents
Info
- Publication number
- JPH0324963B2 JPH0324963B2 JP58163705A JP16370583A JPH0324963B2 JP H0324963 B2 JPH0324963 B2 JP H0324963B2 JP 58163705 A JP58163705 A JP 58163705A JP 16370583 A JP16370583 A JP 16370583A JP H0324963 B2 JPH0324963 B2 JP H0324963B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- plate thickness
- frequency
- component
- gauge
- 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
- 238000005259 measurement Methods 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 8
- 230000002238 attenuated effect Effects 0.000 description 5
- 238000005097 cold rolling Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/66—Roll eccentricity compensation systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【発明の詳細な説明】
この発明は、鋼板などの板に当接しているゲー
ジローラの出力をフイルタ回路を通してこの出力
からゲージローラの偏心に起因する周波数成分を
取り除くローラ偏心除去回路に係り、特に前記ゲ
ージローラの回転数に応じてフイルタの遮断周波
数を連続的に可変し得るようにしたローラ偏心除
去回路に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roller eccentricity removal circuit which passes the output of a gauge roller in contact with a plate such as a steel plate through a filter circuit, and removes frequency components caused by eccentricity of the gauge roller from this output. The present invention relates to a roller eccentricity removing circuit that can continuously vary the cutoff frequency of a filter according to the rotation speed of the gauge roller.
冷間圧延機、連続検査機などに設けられ、これ
ら冷間圧延機、連続検査機などによつて処理され
る板の厚みを測定するものの一つであるローラ型
走間厚み計は、板の上面および下面に一対のゲー
ジローラを当接させ、この板の厚みに対応して決
まるこれらゲージローラの軸間隔の大きさを差動
トランスなどのトランスジユーサによつて電気信
号に変換し、これをメータで表示したり、前記冷
間圧延機などを制御するための板厚測定結果を出
力するようになつている。 Roller-type running thickness gauges are installed in cold rolling mills, continuous inspection machines, etc., and are used to measure the thickness of plates processed by these cold rolling machines, continuous inspection machines, etc. A pair of gauge rollers are brought into contact with the upper and lower surfaces, and the distance between the shafts of these gauge rollers, which is determined according to the thickness of the plate, is converted into an electrical signal by a transducer such as a differential transformer. It is designed to display the thickness on a meter and output the plate thickness measurement results for controlling the cold rolling mill and the like.
ところで、このようなローラ型走間厚み計にお
いては、第１図に示すように各ゲージローラ１，
２が各々対応する回転軸３，４に対して偏心して
いると、これらのゲージローラ１，２の変位を検
出しているトランスジユーサ５で板の板厚信号S1
（第２図イ参照）に前記ゲージローラ１，２の偏
心に起因した周波数成分（偏心成分）S2（第２図
ロ参照）が重畳され、測定誤差が発生してしま
う。このため従来においては、このトランスジユ
ーサ５の出力信号S3（第２図ハ参照）をローパス
フイルタで周波数弁別してこの信号S3から偏心成
分S2を取り除くようにしているが、圧延材料
（板）７のスピードに応じて偏心成分S2の周波数
が変化するので、板７のスピードが大きく変化す
るものでは信号S3中の板厚信号S1と偏心成分S2と
を分離することができない。すなわち、第３図に
示すように圧延スピードがR1ｍ／分の時には板
厚周波数がH1（Hz）ローラ偏心周波数がR1（Hz）
であるが、圧延スピードがR2ｍ／分になると板
厚周波数がH2（Hz）、ローラ偏心周波数がR2（Hz）
になつてしまうため、これをその遮断周波数0
（Hz）が一定なローパスフイルタで弁別したので
は圧延スピードがR2ｍ／分の時に板厚周波数成
分も減衰（−A2′dB）して板の正確な厚さが測定
できなくなつてしまう。 By the way, in such a roller-type running thickness gauge, each gauge roller 1, as shown in FIG.
2 are eccentric with respect to the corresponding rotation axes 3 and 4, the transducer 5 detecting the displacement of these gauge rollers 1 and 2 produces a plate thickness signal S 1
A frequency component (eccentricity component) S 2 (see FIG. 2 B) caused by the eccentricity of the gauge rollers 1 and 2 is superimposed on (see FIG. 2A), resulting in a measurement error. For this reason, in the past, the output signal S 3 of the transducer 5 (see Fig. 2 C) is frequency-discriminated using a low-pass filter to remove the eccentric component S 2 from the signal S 3 . Since the frequency of the eccentric component S 2 changes depending on the speed of the plate 7, it is difficult to separate the plate thickness signal S 1 and the eccentric component S 2 in the signal S 3 in cases where the speed of the plate 7 changes significantly. Can not. In other words, as shown in Figure 3, when the rolling speed is R 1 m/min, the plate thickness frequency is H1 (Hz) and the roller eccentric frequency is R1 (Hz).
However, when the rolling speed becomes R 2 m/min, the plate thickness frequency becomes H2 (Hz) and the roller eccentric frequency becomes R2 (Hz).
, so we set this to its cutoff frequency 0
If the discrimination was performed using a low-pass filter with a constant (Hz), when the rolling speed was R 2 m/min, the plate thickness frequency component would also be attenuated (-A 2 'dB), making it impossible to accurately measure the plate thickness. Put it away.
そこで、圧延スピードに応じてその遮断周波数
0を周波数01〜0oまで段階的に切り換えるよう
にしたものが開発されているが、この場合フイル
タの切換え点、フイルタの切換え段数を多くし、
圧延スピードに応じてこのフイルタの遮断周波数
を頻繁に切り換えなければ高精度の測定を行なう
ことはできない。 Therefore, the cutoff frequency depends on the rolling speed.
A system has been developed in which the frequency 0 is switched stepwise from 01 to 0o , but in this case, the filter switching points and the number of filter switching stages are increased.
Highly accurate measurements cannot be performed unless the cutoff frequency of this filter is frequently changed according to the rolling speed.
この発明は上記の事情に鑑み、圧延スピードが
大幅に変化した場合においても、ゲージローラに
よる板厚測定結果を板厚成分とローラ偏心成分と
に分離してこのローラ偏心成分のみを取り除き、
これによつて前記板厚測定結果から板厚成分のみ
を取り出すことができるローラ偏心除去回路を提
供することを目的としている。 In view of the above-mentioned circumstances, the present invention separates the plate thickness measurement result using a gauge roller into a plate thickness component and a roller eccentricity component, and removes only this roller eccentricity component, even when the rolling speed changes significantly.
It is an object of the present invention to provide a roller eccentricity removing circuit that can thereby extract only the plate thickness component from the plate thickness measurement results.
そしてこの発明によるローラ偏心除去回路にお
いてはこの目的を達成するために、ゲージローラ
の変位を検出して、この検出結果を板厚測定結果
として出力する板厚検出手段と、この板厚検出手
段の出力をフイルタする遮断周波数可変型のフイ
ルタ手段と、前記ゲージローラの回転数を検出
し、この検出結果に応じて前記フイルタ手段の遮
断周波数を連続的に可変する回転数検出手段とを
具備したことを特徴としている。 In order to achieve this object, the roller eccentricity removing circuit according to the present invention includes a plate thickness detecting means for detecting the displacement of the gauge roller and outputting the detection result as a plate thickness measurement result, and a plate thickness detecting means for detecting the displacement of the gauge roller and outputting the detection result as a plate thickness measurement result. A variable cutoff frequency type filter means for filtering the output, and a rotation speed detection means for detecting the rotation speed of the gauge roller and continuously varying the cutoff frequency of the filter means in accordance with the detection result. It is characterized by
以下この発明を図面に示す実施例にしたがつて
説明する。 The present invention will be described below with reference to embodiments shown in the drawings.
第４図はこの発明によるローラ偏心除去回路の
第１実施例の回路構成例を示すブロツク図であ
る。この図において、１０，１１はゲージローラ
であり、これらゲージローラ１０，１１の各回転
軸１２，１３の間隔は差動トランス１４によつて
厚み測定信号S10に変換されて検波回路１５に供
給される。検波回路１５は前記厚み測定信号S10
中に含まれる励振成分を取り除くものであり、こ
の検波回路１５の出力すなわち前記回路軸１２，
１３間の間隔を示す板厚測定信号S11は電圧制御
型フイルタ回路１６の信号入力端子１６ａに供給
される。前記作動トランス１４、及び検波回路１
５により板厚検出手段Ｄが構成される。電圧制御
型フイルタ回路１６はその制御入力端子１６ｃに
印加される制御信号S12の大きさに応じてその遮
断周波数0が0MINから0MAXまで変化する遮断周
波数可変型のローパスフイルタを有するものであ
り、前記制御信号S12の大きさに応じて決まる遮
断周波数0で信号入力端子１６ａに供給された板
厚測定信号S11をフイルタして出力端子１６ｂか
ら出力する。 FIG. 4 is a block diagram showing an example of the circuit configuration of the first embodiment of the roller eccentricity removing circuit according to the present invention. In this figure, reference numerals 10 and 11 indicate gauge rollers, and the distance between the rotating shafts 12 and 13 of these gauge rollers 10 and 11 is converted into a thickness measurement signal S 10 by a differential transformer 14 and supplied to a detection circuit 15. be done. The detection circuit 15 receives the thickness measurement signal S10.
The output of this detection circuit 15, that is, the circuit axis 12,
A plate thickness measurement signal S 11 indicating the spacing between 13 and 13 is supplied to a signal input terminal 16 a of a voltage-controlled filter circuit 16 . The operating transformer 14 and the detection circuit 1
5 constitutes a plate thickness detecting means D. The voltage-controlled filter circuit 16 has a variable cutoff frequency low-pass filter whose cutoff frequency 0 changes from 0MIN to 0MAX depending on the magnitude of the control signal S12 applied to its control input terminal 16c . The plate thickness measurement signal S 11 supplied to the signal input terminal 16a is filtered with a cutoff frequency of 0 determined according to the magnitude of the control signal S 12 and outputted from the output terminal 16b.
また、１８は前記ゲージローラ１０，１１の回
転数を検出するタコジエネレータであり、このタ
コジエネレータ１８の出力（回転数検出信号）S9
はゲイン調整用のアンプ１９を介してバイアス回
路２０に供給され、ここで所定のバイアスが与え
られ、この結果得られる信号が制御信号S12とし
て前記電圧制御型フイルタ回路１６の制御入力端
子１６ｃに供給される。タコジエネレータ１８、
アンプ１９、バイアス回路２０により回転数検出
手段Ｋを構成する。 Further, 18 is a tachometer generator that detects the rotation speed of the gauge rollers 10 and 11, and the output (rotation speed detection signal) of this tachometer generator 18 S 9
is supplied to the bias circuit 20 via the gain adjustment amplifier 19, where a predetermined bias is applied, and the resulting signal is sent to the control input terminal 16c of the voltage-controlled filter circuit 16 as the control signal S12 . Supplied. tachometer generator 18,
The amplifier 19 and the bias circuit 20 constitute a rotation speed detection means K.
次に、以上のように構成されたこの実施例の動
作を第５図に示すフイルタ特性図を参照しながら
説明する。 Next, the operation of this embodiment constructed as described above will be explained with reference to the filter characteristic diagram shown in FIG.
まず、ゲージローラ１０，１１が当接している
圧延板２１の圧延スピードがR1ｍ／分であると
きには、タコジエネレータ１８がこのスピード
R1ｍ／分に応じた回転数検出信号S9を出力し、
バイアス回路２０がこれに応じた制御信号S12を
出力しているから、電圧制御型フイルタ回路１６
は第５図に示すようにこの制御信号S12の値に応
じた遮断周波数01（R1＞01≧H1、ただしR1，
H1は各々圧延スピードR1ｍ／分に対応するロー
ラの偏心成分の周波数、板厚成分の周波数であ
る）で板厚測定信号S11をフイルタする。これに
より、板厚測定信号S11中のローラ偏心成分のみ
が減衰されるとともに、この板厚測定信号S11の
板厚成分はそのままの大きさで電圧制御型フイル
タ回路１６から出力される。次に、この圧延スピ
ードを大きくしてこれをR2ｍ／分にすれば、こ
れに応じて板厚測定信号S11中のローラ偏心成分
の周波数および板厚成分の周波数が高くなつて
各々R2，H2となるが、この場合これに応じて制
御信号S12の値が大きくなつて電圧制御型フイル
タ回路１６の遮断周波数が02となり、R2＞02≧
H2が常に満たされる。したがつてこの場合にお
いても電圧制御型フイルタ回路１６で板厚測定信
号S11中のローラ偏心成分のみが減衰され、この
板厚測定信号S11中の板厚成分がそのまま出力さ
れる。 First, when the rolling speed of the rolling plate 21 that the gauge rollers 10 and 11 are in contact with is R 1 m/min, the tachogenerator 18 operates at this speed.
Outputs a rotation speed detection signal S 9 according to R 1 m/min,
Since the bias circuit 20 outputs the control signal S12 in accordance with this, the voltage controlled filter circuit 16
As shown in FIG . 5, the cutoff frequency 01 (R 1 > 01 ≧ H1 , where R1 ,
H1 is the frequency of the eccentric component of the roller and the frequency of the plate thickness component, respectively, which correspond to the rolling speed R1 m/min.) The plate thickness measurement signal S11 is filtered. As a result, only the roller eccentric component in the plate thickness measurement signal S 11 is attenuated, and the plate thickness component of the plate thickness measurement signal S 11 is output from the voltage-controlled filter circuit 16 with the same magnitude. Next, if this rolling speed is increased to R2 m/min, the frequency of the roller eccentric component and the frequency of the plate thickness component in the plate thickness measurement signal S11 will increase accordingly, and the frequencies of the plate thickness component will increase to R2. , H2 , but in this case, the value of the control signal S12 increases accordingly, and the cutoff frequency of the voltage-controlled filter circuit 16 becomes 02 , so that R2 > 02 ≧
H2 is always satisfied. Therefore, in this case as well, only the roller eccentric component in the plate thickness measurement signal S11 is attenuated by the voltage-controlled filter circuit 16, and the plate thickness component in the plate thickness measurement signal S11 is output as is.
このようにこの実施例においては、圧延スピー
ドが大きくなつて板厚測定信号S11中の板厚成分
の周波数Hおよびローラ偏心成分の周波数Rが高
くなれば、これに応じて電圧制御型フイルタ回路
１６の遮断周波数0が高くなり、H＞0≧Rなる
関係が常に成り立つようにしたので、板厚測定信
号S11中のローラ偏心成分のみを減衰させるとと
もに、板厚成分はそのままの大きさで出力させる
ことができる。またこの場合、圧延スピードが
R1ｍ／分の時における板厚成分の周波数H1、ロ
ーラ偏心成分の周波数R1と、圧延スピードがR2
ｍ／分の時における板厚成分の周波数H2、ロー
ラ偏心成分の周波数R2とは、
H1／R1＝H2／R2 ……(1)
で示される関係にあるので、第５図に示すよう
に、その周波数がR1である時のローラ偏心成分
の減衰量と、その周波数がR2である時のローラ
偏心成分の減衰量とが等しくなる。 In this embodiment, as the rolling speed increases and the frequency H of the plate thickness component and the frequency R of the roller eccentricity component in the plate thickness measurement signal S11 increase, the voltage-controlled filter circuit changes accordingly. Since the cutoff frequency 0 of 16 is increased and the relationship H > 0 ≧ R is always held, only the roller eccentric component in the plate thickness measurement signal S 11 is attenuated, and the plate thickness component remains the same size. It can be output. Also, in this case, the rolling speed is
The frequency H1 of the plate thickness component at R 1 m/min, the frequency R1 of the roller eccentric component, and the rolling speed R 2
The frequency H2 of the plate thickness component and the frequency R2 of the roller eccentricity component at the time of m/min have the relationship shown as H1 / R1 = H2 / R2 ...(1), so as shown in Fig. 5, The amount of attenuation of the roller eccentric component when the frequency is R1 is equal to the amount of attenuation of the roller eccentric component when the frequency is R2 .
第６図はこの発明によるローラ偏心除去回路の
第２実施例を示す回路ブロツク図である。なお、
この図において第４図の各部と対応する部分には
同一の符号が付してある。この図に示す回路が上
述した第１実施例の回路と異なる点は、ゲージロ
ーラ１０，１１の回転を回転パルス発生装置３０
によつて対応するレート（パルス繰返し数）のパ
ルスに変換するとともに、このパルスを分周器３
１で分周してパルス制御型フイルタ回路１６−1
の制御入力端子１６−1Cに供給し、前記パルスの
レートに応じてパルス制御型フイルタ回路１６−
１の遮断周波数0が変化するようにしたことであ
る。 FIG. 6 is a circuit block diagram showing a second embodiment of the roller eccentricity removing circuit according to the present invention. In addition,
In this figure, parts corresponding to those in FIG. 4 are given the same reference numerals. The difference between the circuit shown in this figure and the circuit of the first embodiment described above is that the rotation of the gauge rollers 10 and 11 is controlled by a rotation pulse generator 30.
This pulse is converted into a pulse of the corresponding rate (pulse repetition number) by frequency divider 3.
Pulse control type filter circuit 16-1 by dividing the frequency by 1
is supplied to the control input terminal 16-1C of the pulse control type filter circuit 16-1C according to the rate of the pulse.
The cutoff frequency 0 of 1 is changed.
このように、パルス制御型フイルタ回路１６−
１を用いても、ゲージローラ１０，１１の回転に
応じて板厚測定信号S11をフイルタする時の遮断
周波数0を連続的に可変することができ、この板
厚測定信号S11中のローラ偏心成分のみを減衰さ
せ、かつ板厚成分をそのままの大きさで取り出す
ことができる。 In this way, the pulse-controlled filter circuit 16-
1 , it is possible to continuously vary the cutoff frequency 0 when filtering the plate thickness measurement signal S 11 according to the rotation of the gauge rollers 10 and 11, and the roller in this plate thickness measurement signal S 11 can be varied continuously. It is possible to attenuate only the eccentric component and extract the plate thickness component with its original size.
しかして自動板厚制御を行う装置などのよう
に、その測定精度と板厚制御精度とが比例する装
置にこの発明によるローラ偏心除去回路を適用す
れば、その測定精度の向上に応じてその板厚制御
精度を向上させることができる。 However, if the roller eccentricity removal circuit according to the present invention is applied to a device such as a device that performs automatic sheet thickness control, where the measurement accuracy and sheet thickness control accuracy are proportional, the roller eccentricity removal circuit according to the present invention Thickness control accuracy can be improved.
また上述した各実施例においては、ローパスタ
イプの電圧制御型フイルタ回路１６、パルス制御
型フイルタ回路１６−1を用いる場合を例にとつ
てこの発明を説明したが、ローラ偏心成分のみを
カツトする帯域消去形のフイルタを用いるように
しても上述した各実施例と同様な効果を得ること
ができる。 Furthermore, in each of the above-mentioned embodiments, the present invention has been explained using the low-pass type voltage-controlled filter circuit 16 and the pulse-controlled filter circuit 16-1 as an example. Even if an erasing type filter is used, the same effects as in each of the above-described embodiments can be obtained.
以上説明したようにこの発明によるローラ偏心
除去回路は、回転数検出手段によりゲージローラ
の回転数を検出してこの検出結果でフイルタ手段
の遮断周波数を連続的に制御するとともに、この
フイルタ手段で前記ゲージローラの変位を検出し
て得られた板厚測定信号から前記ゲージローラの
偏心成分を除去する構成としたので、板の圧延ス
ピードが大幅に変化した場合においても、板厚測
定信号中のローラ偏心成分のみを減衰させるとと
もに、該板厚測定信号中の板厚成分をそのままの
大きさで取出すことができ、その測定精度を向上
させることができる。 As explained above, the roller eccentricity removing circuit according to the present invention detects the rotation speed of the gauge roller by the rotation speed detection means, continuously controls the cutoff frequency of the filter means based on the detection result, and uses the filter means to continuously control the cutoff frequency of the filter means. Since the configuration removes the eccentric component of the gauge roller from the plate thickness measurement signal obtained by detecting the displacement of the gauge roller, even if the rolling speed of the plate changes significantly, the roller in the plate thickness measurement signal While only the eccentric component is attenuated, the plate thickness component in the plate thickness measurement signal can be extracted with its original size, and the measurement accuracy can be improved.
また、フイルタ手段は、所定の関係式を満足し
た遮断周波数を連続的に選択自在であり、簡単な
構成とすることができる。 Further, the filter means can continuously select a cutoff frequency that satisfies a predetermined relational expression, and can have a simple configuration.
第１図はローラ型走間厚み計の板厚測定原理を
説明するための概要図、第２図は第１図を説明す
るための波形図、第３図は従来のローラ偏心除去
回路の一例を説明するためのフイルタ特性図、第
４図はこの発明によるローラ偏心除去回路の第１
実施例を示すブロツク図、第５図は同実施例を説
明するためのフイルタ特性図、第６図はこの発明
によるローラ偏心除去回路の第２実施例を説明す
るためのブロツク図である。
１０，１１…ゲージローラ、１４…差動トラン
ス（板厚検出手段）、１６…電圧制御型フイルタ
回路（フイルタ手段）、１６−1…パルス制御型フ
イルタ回路（フイルタ手段）、１８…タコジエネ
レータ（回転数検出手段）、２１…板、３０…回
転パルス発生装置（回転数検出手段）。
Figure 1 is a schematic diagram to explain the principle of plate thickness measurement using a roller-type running thickness meter, Figure 2 is a waveform diagram to explain Figure 1, and Figure 3 is an example of a conventional roller eccentricity removal circuit. FIG. 4 is a filter characteristic diagram for explaining the first roller eccentricity removing circuit according to the present invention.
FIG. 5 is a filter characteristic diagram for explaining the embodiment, and FIG. 6 is a block diagram for explaining a second embodiment of the roller eccentricity removing circuit according to the present invention. 10, 11...Gauge roller, 14...Differential transformer (plate thickness detection means), 16...Voltage control type filter circuit (filter means), 16-1 ...Pulse control type filter circuit (filter means), 18...Tachogenerator (rotation) 21...plate, 30...rotation pulse generator (rotation number detection means).
Claims (1)
１と、 前記ゲージローラの変位量を検出して得られる
検出変位量を前記板の板厚測定信号S11として出
力する板厚検出手段Ｄと、 前記ゲージローラの回転数を検出し、この回転
数に対応する制御信号S12を出力する回転数検出
手段Ｋと、 前記制御信号の値に応じて遮断周波数（O；但
しR＞O≧Hなる関係であり、R，Hは、各々、
圧延スピードに対応するローラの偏心成分の周波
数、板厚成分の周波数）が可変自在であり、入力
される板厚測定信号S11を前記遮断周波数でフイ
ルタすることにより、ローラ偏心成分を除去した
板厚成分の信号が出力されるフイルタ手段１６，
１６-1と、 を具備することを特徴とするローラ偏心除去回
路。[Claims] 1 Gauge roller 10, 1 that rotates in contact with a plate
1, plate thickness detection means D for detecting the displacement amount of the gauge roller and outputting the detected displacement amount obtained as the plate thickness measurement signal S11 of the plate; detecting the number of rotations of the gauge roller, a rotation speed detecting means K that outputs a control signal S12 corresponding to the number of rotations;
The frequency of the eccentric component of the roller corresponding to the rolling speed and the frequency of the plate thickness component are freely variable, and the input plate thickness measurement signal S11 is filtered using the cutoff frequency to remove the eccentric component of the roller. filter means 16 to which the thickness component signal is output;
16 -1 ; A roller eccentricity removing circuit characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58163705A JPS6056410A (en) | 1983-09-06 | 1983-09-06 | Circuit for removing roll eccentricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58163705A JPS6056410A (en) | 1983-09-06 | 1983-09-06 | Circuit for removing roll eccentricity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6056410A JPS6056410A (en) | 1985-04-02 |
| JPH0324963B2 true JPH0324963B2 (en) | 1991-04-04 |
Family
ID=15779056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58163705A Granted JPS6056410A (en) | 1983-09-06 | 1983-09-06 | Circuit for removing roll eccentricity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6056410A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS545787A (en) * | 1977-06-15 | 1979-01-17 | Hitachi Ltd | Strain distribution measuring method of material inside |
-
1983
- 1983-09-06 JP JP58163705A patent/JPS6056410A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS545787A (en) * | 1977-06-15 | 1979-01-17 | Hitachi Ltd | Strain distribution measuring method of material inside |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6056410A (en) | 1985-04-02 |
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