JP2002018516A

JP2002018516A - Method and apparatus for controlling tension of rolling material

Info

Publication number: JP2002018516A
Application number: JP2000207180A
Authority: JP
Inventors: Hiroyuki Takahashi; 弘之高橋; Takeshi Miyata; 武志宮田
Original assignee: Kawasaki Steel Corp
Current assignee: JFE Steel Corp
Priority date: 2000-07-07
Filing date: 2000-07-07
Publication date: 2002-01-22

Abstract

PROBLEM TO BE SOLVED: To provide tension control of a rolling material capable of stably rolling the rolling material in a wide range of a plate thickness from an extra thin matter to a thick matter at a start of rolling by preventing the extra thin plate of the rolling material from breaking. SOLUTION: A time lag in starting a coiling apparatus is estimated for a start command for an electric motor 3c of a mill 1, an electric current of a drive electric motor of the coiling apparatus is corrected/controlled. Or, when a start of the electric motor 3c of the mill 1 is detected by a speed sensor 8c, a start of the mill 1 is judged by an initial stage compensation control means 9A based on the signal, at the same time as the judgment, an electric current command signal corresponding to an initial stage compensation quantity set beforehand is outputted to drive power sources for coiling apparatuses 7a, 7b to conduct an initial stage compensation. Further, in response to a start of the coiling apparatuses 5a, 5b, a compensation control output quantity of the initial stage compensation control is gradually decreased.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、圧延機を通過した
圧延材を巻き取る巻取装置、及び圧延機に向けて圧延材
を巻き戻す巻取装置の少なくとも一方を備えた圧延設備
を対象とし、上記巻取装置の巻取速度を制御して上記圧
延材に張力をかける際に、上記巻取装置の機械的損失分
を補償するために該巻取装置用電動機に対する補償制御
を行うことにより、上記圧延材の張力を制御する装置及
び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 rolling equipment provided with at least one of a winding device for winding a rolled material passed through a rolling mill and a winding device for rewinding the rolled material toward the rolling mill. When controlling the winding speed of the winding device to apply tension to the rolled material, by performing compensation control on the motor for the winding device to compensate for the mechanical loss of the winding device. The present invention relates to an apparatus and a method for controlling the tension of the rolled material.

【０００２】[0002]

【従来の技術】従来のこの種の装置としては、特開昭５
０−０４６５４１号公報に記載のものが知られている。
この装置は、圧延機を通過した圧延材を巻取装置で巻き
取って該圧延材に張力をかける際に、該巻取装置の軸受
等の摩擦により生じる機械的損失を補償して圧延材に掛
かる張力を一定にすべく該巻取装置の電動機に対する補
償制御を行っている。2. Description of the Related Art A conventional apparatus of this type is disclosed in
The thing described in 0-046541 is known.
This device compensates for mechanical loss caused by friction of a bearing or the like of the winding device when winding the rolled material that has passed through a rolling mill with a winding device and applying tension to the rolled material. The compensation control for the electric motor of the winding device is performed so as to keep the applied tension constant.

【０００３】ここで、上記従来の補償制御は巻取装置起
動後における動的な機械的損失分（以下、単に動的損失
とも称する）を対象としており、その動的損失は巻取装
置の巻取速度が高いほど大きいことから、該巻取速度が
高い場合は補償量（例えば、電動機に対する電流指令値
の補正量）を多くし、低い場合は逆に補償量を少なくす
るように調整している。Here, the above-mentioned conventional compensation control targets a dynamic mechanical loss (hereinafter, also simply referred to as a dynamic loss) after the start-up of the winding device. Since the take-up speed is higher, the compensation amount (for example, the correction amount of the current command value for the electric motor) is increased when the take-up speed is high, and the compensation amount is decreased when the take-up speed is low. I have.

【０００４】[0004]

【発明が解決しようとする課題】上述のように従来の圧
延材の張力制御装置においては、巻取装置の電動機に対
する補償制御は、巻取装置起動後の制御であって、つま
り動的損失を対象としている。しかし、例えば圧延材が
ステンレス鋼箔（厚みが０．１ｍｍ以下。実際上は０．
０５ｍｍが多い。）などの極薄物の場合には、圧延機や
巻取装置から当該圧延材に加わる単位面積あたりの張力
が過大とならないようにするために、トータル張力とし
ては極低張力で圧延材を巻き取る必要があるところ、圧
延材が薄いことに伴って、巻取装置電動機に対する電流
指令値が小さくなりすぎる結果、該電動機の出力するト
ルクが、巻取装置が起動する際の静的な機械的損失分を
巻取装置の駆動軸のトルクに換算したものに打ち勝て
ず、巻取装置が起動しないという問題がある。そこで、
その静的な機械的損失（以下、単に静的損失とも称す
る）に相当する分だけ多くトルクを与えようとして、電
動機に対する電流の指令値を相当分多くする静的補正制
御を行うことを考えついたが、そのやり方がまずいと起
動時の圧延機と巻取装置の揃速性が確保できない場合が
ある。これらの場合、例えば、圧延機起動時の巻取装置
の不転により、圧延機の入側で圧延材の張力が上昇し、
圧延材が破断したり、破断に至らないまでも、圧延材に
不要な伸びが生じてしまって板厚の方が減少し、客先の
指定する板厚公差下限を下回るおそれがある。As described above, in the conventional rolling material tension control device, the compensation control for the electric motor of the winding device is a control after the winding device is started, that is, the dynamic loss is reduced. It is targeted. However, for example, the rolled material is made of stainless steel foil (having a thickness of 0.1 mm or less.
05mm is common. )), In order to prevent the tension per unit area applied to the rolled material from a rolling mill or a winding device from becoming excessive, the rolled material is wound with an extremely low total tension. Where necessary, as the rolled material is thin, the current command value for the winding device motor becomes too small. As a result, the torque output by the motor is reduced by static mechanical loss when the winding device is started. There is a problem in that the minute cannot be converted to the torque of the drive shaft of the winding device, and the winding device does not start. Therefore,
In order to apply a torque corresponding to the static mechanical loss (hereinafter, also simply referred to as a static loss), it was conceived to perform a static correction control for considerably increasing a current command value for the electric motor. However, if the method is not good, it may not be possible to ensure the uniformity of the rolling mill and the winding device at the time of startup. In these cases, for example, due to the non-inversion of the winding device at the start of the rolling mill, the tension of the rolled material increases on the entrance side of the rolling mill,
Even if the rolled material breaks or does not break, undesired elongation may occur in the rolled material, resulting in a decrease in the thickness of the rolled material, which may cause the thickness to fall below the lower limit of the thickness tolerance specified by the customer.

【０００５】同様に、圧延機出側においても、圧延機起
動時に巻き取りを行う側の巻取装置の不転により、一時
的に圧延材に弛みが生じる場合があるが、これが巻取装
置用電動機の負荷が小さくなったと制御系に誤認され、
制御系はこれを受けて目標張力に調整しようとして巻取
装置用電動機のトルクを一時的に大きくするように電流
値指令を相当分大きくするよう補償する結果、急激に巻
取装置電動機が起動し、弛んだ圧延材がピンと張られ、
瞬間的に張力が過大となって、当該圧延材が薄いほど破
断しやすくなる。Similarly, on the delivery side of the rolling mill, the rolled material may be temporarily loosened due to the non-rotation of the winding device on the winding side when the rolling mill is started. The control system mistakenly recognized that the motor load was reduced,
In response to this, the control system tries to adjust to the target tension and compensates for the current value command to be considerably increased so as to temporarily increase the torque of the motor for the winding device. As a result, the winding device motor is suddenly started. , The slack rolled material is stretched,
The tension becomes momentarily excessive, and the thinner the rolled material, the easier it is to break.

【０００６】本発明は、かかる不都合を解消するために
なされたものであり、圧延開始時に薄い圧延材が破断す
るのを防止し、極薄物から厚物までの広範囲な板厚の圧
延材の安定した圧延と巻き取り、巻き戻し、特に圧延と
巻き取、巻き戻し可能な圧延材の厚さを従来の０．５mm
よりもさらに薄くすることが可能な圧延材の張力制御装
置及び張力制御方法を提供することを課題とする。SUMMARY OF THE INVENTION The present invention has been made to solve such inconvenience, and it is intended to prevent a thin rolled material from breaking at the start of rolling, and to stabilize a rolled material having a wide range of thicknesses from extremely thin to thick. Rolling and rewinding, rewinding, especially rolling and rewinding, unrollable rolled material thickness of 0.5 mm
An object of the present invention is to provide a tension control device and a tension control method for a rolled material that can be made even thinner.

【０００７】[0007]

【課題を解決するための手段】かかる課題を達成するた
めに、請求項１に係る発明は、圧延機に向けて圧延材を
所定の巻取速度で巻き戻す巻取装置及び圧延機を通過し
た圧延材を所定の巻取速度で巻き取る巻取装置の少なく
とも一方の巻取装置を備えた圧延設備で、上記巻取装置
の巻取速度を制御して圧延機と巻取装置との間の圧延材
に張力をかける際に、上記巻取装置の機械的損失分を補
償すべく巻取装置用電動機の起動後の速度に応じて該巻
取装置用電動機に対する補償制御を行うことによって、
上記圧延材の張力を制御する張力制御装置において、圧
延機用電動機に対して起動用速度指令信号を出力すると
共に、該速度指令信号に基づいて上記巻取装置用電動機
に対する初期補償制御を所定時間継続したのち上記初期
補償制御の補償制御出力量を漸減的に小さくして当該初
期補償制御を終了する初期補償制御手段を備えたことを
特徴とする圧延材の張力制御装置を提供するものであ
る。In order to achieve the above object, the invention according to claim 1 has passed through a winding device and a rolling machine for rewinding a rolled material toward a rolling mill at a predetermined winding speed. In a rolling facility equipped with at least one winding device of a winding device for winding a rolled material at a predetermined winding speed, the winding speed of the winding device is controlled by controlling the winding speed of the rolling device and the winding device. When applying tension to the rolled material, by performing compensation control on the winding device motor in accordance with the speed after starting the winding device motor to compensate for the mechanical loss of the winding device,
In the tension control device for controlling the tension of the rolled material, a starting speed command signal is output to a motor for a rolling mill, and an initial compensation control for the motor for the winding device is performed for a predetermined time based on the speed command signal. It is an object of the present invention to provide a tension control device for a rolled material, comprising an initial compensation control means for gradually decreasing the compensation control output amount of the initial compensation control after the continuation and terminating the initial compensation control. .

【０００８】次に、請求項２に記載した発明は、圧延機
に向けて圧延材を所定の巻取速度で巻き戻す巻取装置及
び圧延機を通過した圧延材を所定の巻取速度で巻き取る
巻取装置の少なくとも一方の巻取装置を備えた圧延設備
で、上記巻取装置の巻取速度を制御して圧延機と巻取装
置との間の圧延材に張力をかける際に、上記巻取装置の
機械的損失分を補償すべく巻取装置用電動機の起動後の
速度に応じて該巻取装置用電動機に対する補償制御を行
うことによって、上記圧延材の張力を制御する張力制御
装置において、圧延機用電動機の速度を検出する第１の
速度検出手段と、上記巻取装置用電動機の速度を検出す
る第２の速度検出手段と、上記第１の速度検出手段によ
る検出信号に基づいて上記圧延機用電動機の起動を判断
し、該判断に応じて上記巻取装置用電動機が起動する前
に該巻取装置用電動機に対する初期補償制御を開始する
と共に、上記第２の速度検出手段による検出信号に基づ
いて上記巻取装置用電動機の起動を判断し、該判断に応
じて該巻取装置用電動機に対する初期補償制御の補償制
御出力量を漸減的に小さくして当該初期補償制御を終了
する初期補償制御手段とを備えたことを特徴とする圧延
材の張力制御装置を提供するものである。Next, a second aspect of the present invention is a winding device for rewinding a rolled material toward a rolling mill at a predetermined winding speed, and a rolled material passed through the rolling mill at a predetermined winding speed. In rolling equipment equipped with at least one winding device of the winding device to take, when controlling the winding speed of the winding device to apply tension to the rolled material between the rolling mill and the winding device, A tension control device for controlling the tension of the rolled material by performing compensation control on the motor for the winding device in accordance with the speed after starting the motor for the winding device to compensate for the mechanical loss of the winding device. , A first speed detecting means for detecting the speed of the electric motor for the rolling mill, a second speed detecting means for detecting the speed of the electric motor for the winding device, and a detection signal from the first speed detecting means. The starting of the electric motor for the rolling mill is determined in accordance with the Before the motor for the winding device is started, initial compensation control for the motor for the winding device is started, and the start of the motor for the winding device is determined based on a detection signal from the second speed detecting means. A rolled material, comprising: a compensation control output means for gradually decreasing the compensation control output amount of the initial compensation control for the electric motor for the winding device in accordance with the determination, and terminating the initial compensation control. Is provided.

【０００９】次に、請求項３に記載した発明は、圧延機
に向けて圧延材を所定の巻取速度で巻き戻す巻取装置及
び圧延機を通過した圧延材を所定の巻取速度で巻き取る
巻取装置の少なくとも一方の巻取装置を備えた圧延設備
で、上記巻取装置の巻取速度を制御して圧延機と巻取装
置との間の圧延材に張力をかける際に、上記巻取装置の
機械的損失分を補償すべく巻取装置用電動機の起動後の
速度に応じて該巻取装置用電動機に対する補償制御を行
うことによって、上記圧延材の張力を制御する方法にお
いて、圧延機用電動機に対して速度指令信号を出力する
と共に、該速度指令信号に基づいて上記巻取装置用電動
機に対する初期補償制御を所定時間継続したのち上記初
期補償制御の補償制御出力量を漸減的に小さくして当該
初期補償制御を終了することを特徴とする圧延材の張力
制御方法を提供するものである。Next, a third aspect of the present invention provides a winding device for rewinding a rolled material toward a rolling mill at a predetermined winding speed, and a rolled material passed through the rolling mill at a predetermined winding speed. In rolling equipment equipped with at least one winding device of the winding device to take, when controlling the winding speed of the winding device to apply tension to the rolled material between the rolling mill and the winding device, A method for controlling the tension of the rolled material by performing compensation control on the motor for the winding device in accordance with the speed after starting the motor for the winding device to compensate for the mechanical loss of the winding device, A speed command signal is output to the motor for the rolling mill, and the initial compensation control for the motor for the winding device is continued for a predetermined time based on the speed command signal, and then the compensation control output amount of the initial compensation control is gradually reduced. To end the initial compensation control. It is intended to provide a tension control method of the rolled material, characterized by.

【００１０】次に、請求項４に記載した発明は、圧延機
に向けて圧延材を所定の巻取速度で巻き戻す巻取装置及
び圧延機を通過した圧延材を所定の巻取速度で巻き取る
巻取装置の少なくとも一方の巻取装置を備えた圧延設備
で、上記巻取装置の巻取速度を制御して圧延機と巻取装
置との間の圧延材に張力をかける際に、上記巻取装置の
機械的損失分を補償すべく巻取装置用電動機の起動後の
速度に応じて該巻取装置用電動機に対する補償制御を行
うことによって、上記圧延材の張力を制御する方法にお
いて、圧延機用電動機の起動の検出信号により該巻取装
置用電動機に対する初期補償制御を開始すると共に、巻
取装置用電動機の起動の検出に応じて巻取装置用電動機
に対する上記初期補償制御の補償制御出力量を漸減的に
小さくして当該初期補償制御を終了することを特徴とす
る圧延材の張力制御方法を提供するものである。Next, according to the invention described in claim 4, a winding device for rewinding a rolled material toward a rolling mill at a predetermined winding speed, and a rolled material passed through the rolling mill at a predetermined winding speed. In rolling equipment equipped with at least one winding device of the winding device to take, when controlling the winding speed of the winding device to apply tension to the rolled material between the rolling mill and the winding device, A method for controlling the tension of the rolled material by performing compensation control on the motor for the winding device in accordance with the speed after starting the motor for the winding device to compensate for the mechanical loss of the winding device, An initial compensation control for the motor for the winding device is started by a detection signal of the start of the motor for the rolling mill, and a compensation control of the initial compensation control for the motor for the winding device in response to the detection of the start of the motor for the winding device. The output is gradually reduced It is intended to provide a tension control method of the rolled material, characterized in that to end the compensation control.

【００１１】次に、請求項５に記載した発明は、請求項
３又は請求項４に記載した構成に対し、巻取装置用電動
機が起動した後の上記初期補償制御の補償制御出力量
を、巻取装置用電動機の巻取速度の上昇に応じて漸減的
に小さくすることを特徴とするものである。次に、請求
項６に記載した発明は、請求項５に記載した構成に対
し、巻取装置用電動機が起動した後の上記初期補償制御
の補償制御出力量を漸減的に小さくする際に、巻取速度
の上昇に応じて当該補償制御出力量の減少率を段階的に
変更することを特徴とするものである。Next, according to the invention described in claim 5, the compensation control output amount of the initial compensation control after the motor for the winding device is started is different from the configuration described in claim 3 or 4 in that: It is characterized in that it is gradually reduced in accordance with an increase in the winding speed of the electric motor for the winding device. Next, according to a sixth aspect of the present invention, when the amount of compensation control output of the initial compensation control after the motor for the winding device is started is gradually reduced with respect to the configuration of the fifth aspect, The reduction rate of the compensation control output amount is changed stepwise in accordance with an increase in the winding speed.

【００１２】ここで、上記初期補償制御とは、巻取装置
における主として起動開始までの静的機械損失を補償す
る制御である。また、上記漸減的とは、補償制御出力量
の減少率が滑らかに変化する場合に限定されず、例えば
階段状に段階的に減少させることも含まれる。Here, the initial compensation control is a control for compensating a static mechanical loss in the winding device mainly until the start of the start-up. Further, the term “gradual decrease” is not limited to a case where the reduction rate of the compensation control output amount changes smoothly, but also includes, for example, a stepwise decrease in a stepwise manner.

【００１３】[0013]

【発明の実施の形態】次に、本発明の実施形態について
図面を参照しつつ説明する。図１は、本実施の形態の一
例である圧延材の張力制御装置を説明するための説明的
概略図、図２、図３は、該装置の作動を説明するための
タイムチャート図である。Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory schematic diagram for explaining a rolled material tension control device as an example of the present embodiment, and FIGS. 2 and 3 are time chart diagrams for explaining the operation of the device.

【００１４】本実施形態の一例として、図１に示される
ような圧延設備によって、ステンレス鋼帯である圧延材
を往復圧延を繰り返すことで厚さ３０μｍ（０．０３m
m）のステンレス鋼箔とする場合を例にとる。図１にお
いて、符号１は圧延材２の圧延を行うミル（圧延機）
を、符号３ｃは該ミル１を減速機４ｃを介して駆動する
ミル用電動機（圧延機用電動機）を、符号５ａ，５ｂは
該ミル１の圧延長手方向入側と出側の両方にそれぞれ配
置されて該ミル１を正逆両方向に通過する圧延材２をコ
イル状に巻き取り、巻き戻しする巻取装置を、符号５
ｃ，５ｄはミル１と巻取装置５ａ，５ｂとの間に介在す
るように設置されたデフレクタロールを、符号３ａ，３
ｂは減速機４ａ，４ｂを介して巻取装置５ａ，５ｂを駆
動する巻取装置用電動機を、符号７ｃはミル用電動機３
ｃの駆動電源を、符号７ａ，７ｂは巻取装置用電動機３
ａ，３ｂの駆動電源を、符号８ｃはミル用電動機３ｃの
速度を検出する速度センサ（第１の速度検出手段）を、
符号８ａ，８ｂは巻取装置用電動機３ａ，３ｂの速度を
検出する速度センサ（第２の速度検出手段）を、符号９
は各速度センサ８ａ，８ｂ，８ｃの検出信号に応じて各
電動機３ａ，３ｂ，３ｃを制御するコントローラ９を、
それぞれ表している。上記コントローラ９は、機械的損
失を補償する初期補償制御手段９Ａ及び動的損失補償制
御手段９Ｂを備える。As an example of the present embodiment, a rolled material as a stainless steel strip is repeatedly reciprocally rolled by a rolling facility as shown in FIG. 1 to obtain a thickness of 30 μm (0.03 m
Take the case of stainless steel foil of m) as an example. In FIG. 1, reference numeral 1 denotes a mill (rolling machine) for rolling a rolled material 2
Reference numeral 3c denotes an electric motor for a mill (electric motor for a rolling mill) for driving the mill 1 via a speed reducer 4c, and reference numerals 5a and 5b denote both an entrance side and an exit side in the rolling longitudinal direction of the mill 1, respectively. Reference numeral 5 denotes a winding device that winds the rolled material 2 that is disposed and passes through the mill 1 in both the forward and reverse directions, and winds and unwinds the rolled material 2.
Reference numerals 3a and 3d denote deflector rolls installed so as to be interposed between the mill 1 and the winding devices 5a and 5b.
b is a motor for the winding device that drives the winding devices 5a and 5b via the speed reducers 4a and 4b, and 7c is a motor 3 for the mill.
and 7a and 7b are motors 3 for the winding device.
Reference numeral 8c denotes a speed sensor (first speed detecting means) for detecting the speed of the mill electric motor 3c.
Reference numerals 8a and 8b denote speed sensors (second speed detecting means) for detecting the speeds of the winding motors 3a and 3b, and reference numeral 9 denotes a speed sensor.
Is a controller 9 for controlling the electric motors 3a, 3b, 3c according to the detection signals of the speed sensors 8a, 8b, 8c.
Each is represented. The controller 9 includes an initial compensation control means 9A and a dynamic loss compensation control means 9B for compensating for a mechanical loss.

【００１５】第１の実施形態として、上記初期補償制御
手段９Ａは、ミル用電動機３ｃに対する起動用速度指令
信号を発すると同時に予め設定された初期補償量（補償
制御出力量）に応じた初期補償用の電流指令信号を巻取
装置用駆動電源７ａ，７ｂに対して出力してステップ状
の初期補償制御出力を行う（図２参照）。あるいは、初
期補償の制御開始タイミングをコントローラ９からのミ
ル速度指令出力後Ｔ₁ｓｅｃ（Ｔ₁は０．１〜１ｓｅ
ｃ）又はミル速度指令（目的速度）のｘ₁％以上（ｘ₁
は０．０５〜０．２）とし、制御終了タイミングを初期
補償時間Ｔ₂ｓｅｃ（Ｔ₂は１〜３ｓｅｃ）後としても
よい。As a first embodiment, the initial compensation control means 9A issues a starting speed command signal to the mill motor 3c and simultaneously performs an initial compensation according to a preset initial compensation amount (compensation control output amount). A current command signal is output to the winding drive power sources 7a and 7b to perform a step-like initial compensation control output (see FIG. 2). Alternatively, the control start timing of the initial compensation is set to T ₁ sec (T ₁ is 0.1 to ₁ sec) after the output of the mill speed command from the controller 9.
c) or at least x ₁ % of the mill speed command (target speed) (x ₁
May be 0.05 to 0.2), and the control end timing may be after the initial compensation time T ₂ sec (T ₂ is 1 to ₃ sec).

【００１６】あるいは、第２の実施形態として、上記補
償制御手段９Ａは、ミル用電動機３ｃの速度を検出する
速度センサ８ｃからの検出信号に基づいて、「ミル速度
実績＞０（ミルの起動）」かどうか判断し、「ミル速度
実績＞０（ミルの起動）」と判断すると同時に予め設定
された初期補償量（補償制御出力量）に応じた初期補償
用の電流指令信号を巻取装置用駆動電源７ａ，７ｂに対
して出力してステップ状の初期補償制御出力を行っても
良い（図３参照）。Alternatively, as a second embodiment, the compensation control means 9A determines that “the actual mill speed> 0 (the start of the mill) based on the detection signal from the speed sensor 8c which detects the speed of the mill motor 3c. And at the same time that "mill speed actual> 0 (mill start)" is determined, and at the same time, a current command signal for initial compensation according to a preset initial compensation amount (compensation control output amount) is used for the winding device. The output may be outputted to the drive power supplies 7a and 7b to perform a step-like initial compensation control output (see FIG. 3).

【００１７】ここで、初期補償量は、例えば、実験によ
り得たもので静的な機械的損失の実測最大値の８０〜１
２０％とするのが好ましい。また、上記初期補償量は、
ステップ状でなくても良いが、ステップ状に補償制御す
る方が制御が簡易となる。初期補償制御の終了処理は、
図２あるいは図３に示すように、下記（１）式のような
指数関数に沿って初期補償制御の補償制御出力量が漸減
的に小さくなるように、当該補償制御出力量の減少に応
じた巻取装置用駆動電源７ａ，７ｂに対する初期補償用
の電流指令信号を供給し、該初期補償用の電流指令信号
を漸減的に小さくする。Here, the initial compensation amount is, for example, 80 to 1 of the actually measured maximum value of the static mechanical loss obtained by an experiment.
Preferably it is 20%. Also, the initial compensation amount is
The control may not be in a step shape, but the compensation control in a step shape simplifies the control. The end processing of the initial compensation control
As shown in FIG. 2 or FIG. 3, the compensation control output amount of the initial compensation control is reduced in accordance with an exponential function as shown in the following equation (1) so as to gradually decrease. A current command signal for initial compensation is supplied to the drive power sources 7a and 7b for the winding device, and the current command signal for initial compensation is gradually reduced.

【００１８】なお、十分な時間ｔ₀₀経過時（例えばｔ₀₀
＝１０と固定して設定）には、Ｆ＝０と強制的に設定し
て該初期補償制御を終了してもよい。Ｆ＝ａ・ｅｘｐ｛−ｂ（ｔ−ｔ０）｝・・・（１）ここで、ａ、ｂ：定数ｔ：時間ｔ０：時間定数である。[0018] In addition, a sufficient period of time t ₀₀ elapsed time (for example t ₀₀
= 10), the initial compensation control may be terminated by forcibly setting F = 0. F = a · exp {−b (t−t0)} (1) where a, b: constant t: time t0: time constant

【００１９】ｔ０の同定は、圧延機なしの状態で巻取装
置の起動テストを行ってみて実測し、今度は圧延機あり
の状態で起動テストを行ってみて確かに圧延材が破断し
ないことを確認する、という試行錯誤的な段階を踏んだ
やり方で行うのがよい。図２，図３のような図面上は、
図中のＡ、Ｂが時間的に完全に一致し、その後のミル速
度と巻取速度の速度が完全に揃速するのが理想的であ
る。圧延機や巻取装置といった装置系の特性が理想状態
に近い、なかでも圧延機や巻取装置の応答の遅れが小さ
いときにはｔ０＝０としても良い。The identification of t0 is actually measured by performing a start-up test of the winding device without a rolling mill, and then, by performing a start-up test with a rolling mill, it is confirmed that the rolled material does not break. It is a good idea to use a trial-and-error method of checking. On the drawings like FIGS. 2 and 3,
Ideally, A and B in the figure completely coincide with each other in time, and the subsequent mill speed and winding speed are completely uniform. T0 = 0 may be set when the characteristics of the device system such as the rolling mill and the winding device are close to the ideal state, and particularly when the response delay of the rolling machine and the winding device is small.

【００２０】ところが、現実にはそのような理想的に各
装置が動かない場合の方が多く、Ａ、Ｂを完全に一致さ
せようにも季節による気温変化や経年的な装置の損耗と
いった外乱により、微妙な狂いが生じてくることがあ
る。よって、経験的に試行錯誤によってｔ０の値を調整
していき、最終的に前述の外乱がある場合でも圧延材に
かかる張力により、破断、不要な伸びとも問題のないレ
ベルに収れんさせるようにするのがよい。However, in reality, it is often the case that each device does not operate ideally. Even if A and B are completely matched, disturbances such as temperature change due to season and wear of the device over time may cause it. , A subtle disorder may occur. Therefore, the value of t0 is empirically adjusted by trial and error, and finally, even if there is the above-described disturbance, the tension applied to the rolled material is adjusted so that breakage and unnecessary elongation can be reduced to a level where there is no problem. Is good.

【００２１】また、動的損失補償手段９Ｂは、従来の動
的な機械的損失分を対象とした補償制御を行う手段であ
って、巻取装置５ａ，５ｂの速度を検出する速度センサ
８ａ，８ｂの検出信号に基づいて、「巻取装置速度実績
＞０（巻取装置の起動）」となったと判断すると、つま
り巻取装置５ａ，５ｂの起動を判断すると、速度センサ
８ａ，８ｂからの検出信号（巻取速度）に応じて、動的
損失に対する補償量を例えば比例制御などの方法により
制御する。即ち、巻取装置５ａ，５ｂの巻取速度が高い
場合は動的損失が大きくなるので補償量を多くし、低い
場合は逆に動的損失は小さくなるので補償量を少なくす
るように、動的損失補償用の電流指令信号を調整する。The dynamic loss compensating means 9B is a means for performing compensation control for the conventional dynamic mechanical loss, and comprises speed sensors 8a, 8b for detecting the speeds of the winding devices 5a, 5b. If it is determined based on the detection signal of 8b that “the actual speed of the winding device> 0 (starting of the winding device)”, that is, if it is determined that the winding devices 5a and 5b are started, the speed sensors 8a and 8b output the signals. In accordance with the detection signal (winding speed), the amount of compensation for the dynamic loss is controlled by a method such as proportional control. That is, when the winding speed of the winding devices 5a and 5b is high, the dynamic loss increases, so that the compensation amount increases. When the winding speed is low, the dynamic loss decreases, so that the compensation amount decreases. Current command signal for dynamic loss compensation.

【００２２】なお、巻取装置５ａ，５ｂは圧延材２の巻
戻装置を兼ねており、図１において矢印Ａ方向の圧延時
には巻取装置５ａが巻戻装置として作動し、反対に矢印
Ｂ方向の圧延時には巻取装置５ｂが巻戻装置として作動
する。次に、上記構成による補償制御手段を備えた張力
制御の作動について説明する。The winding devices 5a and 5b also serve as unwinding devices for the rolled material 2. When rolling in the direction of arrow A in FIG. During rolling, the winding device 5b operates as a rewinding device. Next, the operation of the tension control provided with the compensation control means having the above configuration will be described.

【００２３】圧延材２が極薄物のステンレス鋼箔のよう
な場合、巻取装置５ａ，５ｂ及び減速機４ａ，４ｂを静
止状態から起動する際の静的な機械的損失分を、巻取装
置の駆動軸のトルクに換算したものが圧延材２を圧延す
る際に必要な張力を与えるために巻取装置の駆動軸にと
って必要なトルクに比べて非常に大きくなる。したがっ
て、この状態でコントローラ９からミル用電動機３ｃ及
び巻取装置用電動機３ａ，３ｂに対して速度指令を出力
して圧延を開始し、巻取装置用電動機３ａ，３ｂに対し
て何ら静的な機械的損失分に対する補償を行わないと、
該開始時にミル１だけが運転されて巻取装置５ａ，５ｂ
が不転となり、この結果、ミル１の入側で圧延材２の張
力が上昇して該圧延材２が破断してしまうと共に、ミル
１の出側で圧延材２が一時的に弛んでしまう。When the rolled material 2 is an ultra-thin stainless steel foil, the static mechanical loss when the winding devices 5a and 5b and the speed reducers 4a and 4b are started from a stationary state is calculated by using the winding device. The torque converted to the torque of the drive shaft is much larger than the torque required for the drive shaft of the winding device to apply the necessary tension when rolling the rolled material 2. Therefore, in this state, the controller 9 outputs a speed command to the mill motor 3c and the winding device motors 3a and 3b to start rolling, and the static control is not performed for the winding device motors 3a and 3b. Without compensation for mechanical losses,
At the start, only the mill 1 is operated and the winding devices 5a, 5b
As a result, the tension of the rolled material 2 increases on the entrance side of the mill 1 and the rolled material 2 breaks, and the rolled material 2 temporarily loosens on the exit side of the mill 1. .

【００２４】これに対し、本実施形態では、巻取装置５
ａ，５ｂの起動前にコントローラ９の初期補償制御手段
９Ａによって巻取装置５ａ，５ｂの電動機３ａ，３ｂに
対して該巻取装置５ａ，５ｂの静的な機械的損失分に応
じた初期補償制御が行われる。この結果、例えば、圧延
方向を反転させる際や、新たなコイル状鋼帯を巻取装置
に組み入れて圧延を開始する際の、ミル１の起動タイミ
ングと巻取装置５ａ，５ｂの起動タイミングを略一致さ
せることができて、圧延材２の破断を防止でき、圧延材
にかかる張力、それによって生ずる伸び、とも問題のな
いレベルに抑えることができる。On the other hand, in the present embodiment, the winding device 5
Before the start-up of the motors a and 5b, the initial compensation control means 9A of the controller 9 provides the motors 3a and 3b of the winding devices 5a and 5b with initial compensation according to the static mechanical loss of the winding devices 5a and 5b. Control is performed. As a result, for example, when the rolling direction is reversed or when a new coiled steel strip is incorporated in the winding device and rolling is started, the start timing of the mill 1 and the start timing of the winding devices 5a and 5b are substantially reduced. The rolled material 2 can be prevented from being broken, and the tension applied to the rolled material and the resulting elongation can be suppressed to a level that does not cause any problem.

【００２５】さらに、巻取装置５ａ，５ｂの起動後から
上記初期補償制御の終了までの期間は、従来の動的損失
を対象とする動的損失補償手段９Ｂによる補償制御の補
償制御出力量に対し、上記漸減的に小さくなる初期補償
制御手段９Ａからの補償制御出力量を加算した補償制御
出力量、具体的には、動的損失を対象とした補償制御用
の電流指令信号に初期補償用の電流指令信号が加算され
た電流指令値が巻取装置用駆動電源７ａ，７ｂに出力さ
れることとなる。Furthermore, during the period from the start-up of the winding devices 5a and 5b to the end of the initial compensation control, the compensation control output amount of the compensation control by the conventional dynamic loss compensating means 9B for the dynamic loss is used. On the other hand, the compensation control output amount obtained by adding the compensation control output amount from the initial compensation control means 9A, which is gradually reduced, specifically, the current command signal for compensation control for dynamic loss is added to the compensation command output signal. The current command value obtained by adding the above current command signals is output to the drive power sources 7a and 7b for the winding device.

【００２６】これにより、巻取装置５ａ，５ｂの起動に
より補償制御の対象が静的な機械的損失分から動的な機
械的損失分に移行しても補償量が急激に減少して巻取装
置５ａ，５ｂの補償量不足となることがなくなり、この
結果、巻取装置５ａ，５ｂの起動直後に圧延材２の過張
力による破断（巻き戻し側で発生）を有効に防止するこ
とができる。Thus, even if the target of the compensation control shifts from the static mechanical loss to the dynamic mechanical loss by the activation of the winding devices 5a and 5b, the compensation amount is sharply reduced and the winding device is reduced. Insufficiency of the compensation amount of 5a, 5b is prevented, and as a result, it is possible to effectively prevent the rolled material 2 from breaking (occurring on the unwinding side) immediately after the start-up of the winding devices 5a, 5b.

【００２７】全く同様の原理により、巻き取り側でも、
圧延材２の弛み、それを負荷が軽くなったと制御系が誤
認することに伴う急激な巻取装置の起動による圧延材２
の過張力破断も有効に防止することができる。また、従
来は、巻取装置５ａ、５ｂの起動直後に上記初期補償制
御をステップ状に終了させると、圧延材２の張力に急激
な張力変動が生じ当該圧延材２の張力が上昇するため、
当該圧延材２の板厚が薄くなる程、当該圧延材２に不要
な伸びが生じたり破断するおそれがあるため、実施形態
の例に登場するような往復圧延機で薄くできる板厚が制
限されるという問題があった。According to exactly the same principle, even on the winding side,
The rolled material 2 is loosened due to the slackness of the rolled material 2 and the sudden start-up of the winding device due to the control system misidentifying that the load has become lighter.
Can be effectively prevented from being over-tensioned. Conventionally, if the initial compensation control is terminated in a step-like manner immediately after the start-up of the winding devices 5a and 5b, a sharp change in the tension of the rolled material 2 occurs and the tension of the rolled material 2 increases.
As the thickness of the rolled material 2 becomes thinner, unnecessary elongation or breakage of the rolled material 2 may occur, so that the thickness of the rolled material 2 that can be reduced by a reciprocating rolling mill as described in the example of the embodiment is limited. Problem.

【００２８】これに対し、本発明に基づく実施形態によ
れば、巻取装置５ａ、５ｂの起動直後に、初期補償制御
の補償制御出力量を漸減的に小さくしていき当該初期補
償制御を終了するので、当該初期補償制御の終了にとも
なう圧延材２の張力変動を小さく抑えることができ、圧
延材２の板厚が薄くても、圧延材２に不要な伸びが生じ
たり破断したりすることを防止できる。On the other hand, according to the embodiment of the present invention, immediately after the winding devices 5a and 5b are started, the compensation control output amount of the initial compensation control is gradually reduced to end the initial compensation control. Therefore, the fluctuation of the tension of the rolled material 2 due to the end of the initial compensation control can be reduced, and even if the thickness of the rolled material 2 is thin, unnecessary elongation or breakage of the rolled material 2 occurs. Can be prevented.

【００２９】さらに、巻取装置５ａ、５ｂの起動直後、
巻取速度の上昇に伴って動的損失に対する補償制御出力
量が増加するが、逆に静的損失に対する初期補償制御の
補償制御出力量は巻取速度の上昇に伴って漸減的に小さ
くなるので、初期補償制御から従来の動的損失に対する
制御に切り替わる際のトータルの補償制御出力量が急激
に変化することを抑えられ、当該切り替わり時の圧延材
２の張力変動を小さくすることができ、圧延材２に不要
な伸びが生じたり破断したりすることを防止できる。Further, immediately after the start-up of the winding devices 5a and 5b,
As the winding speed increases, the amount of compensation control output for dynamic loss increases, but conversely, the amount of compensation control output for initial compensation control for static loss decreases gradually as the winding speed increases. In addition, it is possible to suppress a sudden change in the total amount of compensation control output when switching from the initial compensation control to the conventional control for dynamic loss, and to reduce the fluctuation in the tension of the rolled material 2 at the time of the switching. Unnecessary elongation or breakage of the material 2 can be prevented.

【００３０】このように、この実施の形態によれば、圧
延材２がステンレス鋼箔のように極薄物の場合であって
も、ミル１と巻取装置５ａ，５ｂとの起動タイミングを
ほぼ同一にしてミル１の起動時の巻取装置５ａ，５ｂの
不転による圧延材２の破断をなくすことができると共
に、巻取装置５ａ，５ｂ起動後の補償不足による圧延材
２の破断をなくすこともできるので、極薄物から厚物ま
での広範囲な板厚の圧延と巻き取り、巻き戻しを安定し
て行うことができる。As described above, according to this embodiment, even when the rolled material 2 is an extremely thin material such as a stainless steel foil, the starting timings of the mill 1 and the winding devices 5a and 5b are substantially the same. In addition to the above, it is possible to eliminate breakage of the rolled material 2 due to non-rotation of the winding devices 5a and 5b when the mill 1 is started, and to eliminate breakage of the rolled material 2 due to insufficient compensation after starting the winding devices 5a and 5b. Therefore, rolling, winding and rewinding of a wide range of sheet thicknesses from extremely thin to thick can be performed stably.

【００３１】また、上記実施形態では、初期補償制御の
終了処理は、時間ｔの指数関数にしたがって初期補償制
御の補償制御出力量が小さくなるようにしているが、例
えば、第３の実施形態として巻取装置用電動機３ａ，３
ｂの巻取速度ｖをパラメータとした下記（２）式のよう
な指数関数の曲線にしたがって漸減的に小さくするな
ど、当該巻取装置用電動機３ａ，３ｂの巻取速度ｖの上
昇に応じて初期補償制御の補償制御出力量Ｆを漸減的に
小さくするようにしても良い。Further, in the above-described embodiment, the end processing of the initial compensation control is such that the output of the compensation control of the initial compensation control becomes smaller in accordance with the exponential function of the time t. For example, in the third embodiment, Electric motors 3a, 3 for winding device
The winding speed v of the winding motors 3a and 3b is increased in accordance with an increase in the winding speed v of the winding motors 3a and 3b, for example, by gradually decreasing the winding speed v of b in accordance with an exponential function curve such as the following equation (2). The compensation control output amount F of the initial compensation control may be gradually reduced.

【００３２】Ｆ＝ａ・ｅｘｐ（−ｂｖ）・・・（２）ここで、ａ、ｂ：定数ｖ：巻取装置用電動機３ａ，３ｂの巻取速度である。F = a · exp (−bv) (2) where, a, b: constants, v: winding speeds of the winding motors 3a, 3b.

【００３３】この場合にも、動的損失の補償制御が巻取
速度に比例することと共に、静的損失の補償出力も巻取
速度に応じて小さくなることで、精度良く巻取装置の起
動直後の圧延材２の張力変動を小さく抑えることが可能
となる。さらに、第４の実施形態として、上記補償制御
出力量を漸減的に小さくする際の当該補償制御出力量の
漸減線を、図４に示すような折れ線状に設定しても良
い。すなわち、補償制御出力量の減少率を巻取速度が所
定回転数となるたびに変更することで、折れ線状に補償
制御出力量を減少して初期補償制御を終了しても良い。
この場合には、第２の実施の形態の説明で述べたのと同
様な試行錯誤の繰り返しにより圧延機、巻取装置の起動
時の応答遅ればかりでなく、その他の微妙な特性を経験
的につかみ、各種の外乱の存在下でも圧延機での破断や
不要な伸びなどが発生しないレベルに調整することがで
きる。Also in this case, the dynamic loss compensation control is proportional to the winding speed, and the static loss compensation output also decreases according to the winding speed. Of the rolled material 2 can be kept small. Further, as a fourth embodiment, a gradually decreasing line of the compensation control output amount when the compensation control output amount is gradually decreased may be set to a polygonal line shape as shown in FIG. That is, by changing the reduction rate of the compensation control output amount each time the winding speed reaches the predetermined rotation speed, the compensation control output amount may be reduced in a polygonal line shape and the initial compensation control may be ended.
In this case, by repeating the same trial and error as described in the description of the second embodiment, not only the response delay at the start of the rolling mill and the winding device but also other delicate characteristics are empirically determined. It can be adjusted to a level that does not cause breakage or unnecessary elongation in a rolling mill even in the presence of gripping and various disturbances.

【００３４】以下、本発明の実施形態について述べた
が、本発明はこれに限るものではなく、初期補償制御の
補償制御出力量を漸減直線的に小さくする場合など、結
果的に圧延材の破断を起こさず、不要な伸びなどが問題
ないレベルにできるような方法であればいかなるもので
も良い。また、以上に述べた実施形態は、圧延機が往復
圧延を繰り返すタイプの場合であって、巻取装置は、巻
き取りも巻き戻しもできるタイプのものである場合につ
いて述べたが、本願発明はこれに限るものではなく、巻
取装置は、巻き戻しの機能だけのものが設置されている
場合、巻き取りの機能だけのものが設定されている場
合、両方の機能をもつものが設置されている場合、いず
れでもよいことはいうまでもない。Although the embodiments of the present invention have been described below, the present invention is not limited to this, and as a result, for example, when the compensation control output amount of the initial compensation control is gradually decreased linearly, the rolled material breaks. Any method may be used as long as the method does not cause any undesired elongation and the like without causing any problem. Further, the embodiment described above is a case where the rolling mill repeats reciprocating rolling, and the winding device is a type that can perform both winding and rewinding. The winding device is not limited to this, and if the winding device has only the rewinding function, if the winding device only has the function, the device having both functions is installed. Needless to say, any of them may be used.

【００３５】さらに、本発明は、厚物に対して適用する
ことは全く問題ない。それは、厚物の方がトータル強度
が高いので、張力変動があっても、それにより破断や不
要な伸びを発生しにくいことは明らかだからである。結
果的に、本発明によれば、極薄物から厚物まで広範囲な
板厚の圧延材について圧延、巻き取り、巻き戻しを安定
して行うことができる。Further, there is no problem in applying the present invention to a thick object. The reason is that, since a thick material has a higher total strength, it is clear that even if there is a variation in tension, it is difficult to cause breakage or unnecessary elongation. As a result, according to the present invention, rolling, winding, and rewinding can be performed stably with respect to a rolled material having a wide range of plate thicknesses from an extremely thin to a thick material.

【００３６】[0036]

【発明の効果】上記の説明から明らかなように、本発明
によれば、圧延材が箔などの極薄物の場合に、圧延機と
巻取装置との起動タイミングをほぼ同一にして圧延機の
起動時の巻取装置の不転による圧延材の破断をなくすこ
とができると共に、巻取装置起動後の補償不足による圧
延材の破断をなくすことができる。本発明は極薄物の破
断や不要な伸びの防止に効果があるが、厚物に適用して
も全く問題ない。よって、極薄物から厚物までの広範囲
な板厚の圧延材の圧延を安定して行うことができるとい
う効果が得られる。As is apparent from the above description, according to the present invention, when the rolled material is an extremely thin material such as a foil, the start-up timings of the rolling mill and the winding device are made substantially the same, and Breakage of the rolled material due to non-rotation of the winding device at the time of starting can be prevented, and breakage of the rolled material due to insufficient compensation after starting the winding device can be prevented. Although the present invention is effective in preventing breakage and unnecessary elongation of an extremely thin object, there is no problem when applied to a thick object. Therefore, an effect is obtained that a rolled material having a wide range of thickness from an extremely thin to a thick material can be stably rolled.

【００３７】特に、圧延可能な圧延材の厚さの下限をよ
り薄くすることが可能となるという効果がある。In particular, there is an effect that the lower limit of the thickness of the rolled material that can be rolled can be reduced.

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

【図１】本発明の実施の形態の一例である圧延材の張力
制御装置を説明するための説明的概略図である。FIG. 1 is an explanatory schematic diagram illustrating a tension control device for a rolled material as an example of an embodiment of the present invention.

【図２】該装置の作動を説明するためのタイムチャート
図である。FIG. 2 is a time chart for explaining the operation of the device.

【図３】該装置の作動を説明するためのタイムチャート
図である。FIG. 3 is a time chart for explaining the operation of the device.

【図４】補償出力の減少の度合いを段階的に変化させた
場合の図である。FIG. 4 is a diagram when the degree of reduction of the compensation output is changed stepwise.

【符号の説明】[Explanation of symbols]

１ミル（圧延機）２圧延材３ｃミル用電動機（圧延機用電動機）３ａ，３ｂ巻取装置用電動機５ａ，５ｂ巻取装置８ｃ速度センサ（第１の速度検出手段）８ａ，８ｂ速度センサ（第２の速度検出手段）９コントローラ９ａ初期補償制御手段９ｂ動的機械損失補償手段 Reference Signs List 1 Mill (rolling machine) 2 Rolled material 3c Electric motor for mill (electric motor for rolling mill) 3a, 3b Electric motor for winding device 5a, 5b Winding device 8c Speed sensor (first speed detecting means) 8a, 8b Speed sensor ( Second speed detecting means) 9 Controller 9a Initial compensation controlling means 9b Dynamic mechanical loss compensating means

Claims

【特許請求の範囲】[Claims]

【請求項１】圧延機に向けて圧延材を所定の巻取速度
で巻き戻す巻取装置及び圧延機を通過した圧延材を所定
の巻取速度で巻き取る巻取装置の少なくとも一方の巻取
装置を備えた圧延設備で、上記巻取装置の巻取速度を制
御して圧延機と巻取装置との間の圧延材に張力をかける
際に、上記巻取装置の機械的損失分を補償すべく巻取装
置用電動機の起動後の速度に応じて該巻取装置用電動機
に対する補償制御を行うことによって、上記圧延材の張
力を制御する張力制御装置において、圧延機用電動機に対して起動用速度指令信号を出力する
と共に、該速度指令信号に基づいて上記巻取装置用電動
機に対する初期補償制御を所定時間継続したのち上記初
期補償制御の補償制御出力量を漸減的に小さくして当該
初期補償制御を終了する初期補償制御手段を備えたこと
を特徴とする圧延材の張力制御装置。At least one of a winding device for rewinding a rolled material toward a rolling mill at a predetermined winding speed and a winding device for winding a rolled material passing through the rolling machine at a predetermined winding speed. In a rolling facility equipped with a device, when tension is applied to a rolled material between a rolling mill and a winding device by controlling the winding speed of the winding device, the mechanical loss of the winding device is compensated. A tension control device for controlling the tension of the rolled material by performing compensation control on the motor for the winding device in accordance with the speed of the motor for the winding device after the start of the operation. Output the speed control signal for the winding device, and based on the speed command signal, continue the initial compensation control for the electric motor for the winding device for a predetermined time. Initial compensation system to end compensation control Tension controller of the rolled material, characterized in that it comprises means.

【請求項２】圧延機に向けて圧延材を所定の巻取速度
で巻き戻す巻取装置及び圧延機を通過した圧延材を所定
の巻取速度で巻き取る巻取装置の少なくとも一方の巻取
装置を備えた圧延設備で、上記巻取装置の巻取速度を制
御して圧延機と巻取装置との間の圧延材に張力をかける
際に、上記巻取装置の機械的損失分を補償すべく巻取装
置用電動機の起動後の速度に応じて該巻取装置用電動機
に対する補償制御を行うことによって、上記圧延材の張
力を制御する張力制御装置において、圧延機用電動機の速度を検出する第１の速度検出手段
と、上記巻取装置用電動機の速度を検出する第２の速度
検出手段と、上記第１の速度検出手段による検出信号に
基づいて上記圧延機用電動機の起動を判断し、該判断に
応じて上記巻取装置用電動機が起動する前に該巻取装置
用電動機に対する初期補償制御を開始すると共に、上記
第２の速度検出手段による検出信号に基づいて上記巻取
装置用電動機の起動を判断し、該判断に応じて該巻取装
置用電動機に対する初期補償制御の補償制御出力量を漸
減的に小さくして当該初期補償制御を終了する初期補償
制御手段とを備えたことを特徴とする圧延材の張力制御
装置。2. A winding device for rewinding a rolled material at a predetermined winding speed toward a rolling mill and / or a winding device for winding a rolled material passing through the rolling machine at a predetermined winding speed. In a rolling facility equipped with a device, when tension is applied to a rolled material between a rolling mill and a winding device by controlling the winding speed of the winding device, the mechanical loss of the winding device is compensated. In the tension control device for controlling the tension of the rolled material, the speed of the electric motor for the rolling machine is detected by performing compensation control on the electric motor for the winding device in accordance with the speed after the start of the electric motor for the winding device. First speed detecting means for detecting the speed of the electric motor for the winding device, and determining whether to start the electric motor for the rolling mill based on a detection signal from the first speed detecting means. Then, the electric motor for the winding device is started according to the judgment. Before starting the initial compensation control for the motor for the winding device, the starting of the motor for the winding device is determined based on the detection signal from the second speed detecting means. A tension control device for a rolled material, comprising: an initial compensation control means for gradually decreasing a compensation control output amount of the initial compensation control for the device motor and terminating the initial compensation control.

【請求項３】圧延機に向けて圧延材を所定の巻取速度
で巻き戻す巻取装置及び圧延機を通過した圧延材を所定
の巻取速度で巻き取る巻取装置の少なくとも一方の巻取
装置を備えた圧延設備で、上記巻取装置の巻取速度を制
御して圧延機と巻取装置との間の圧延材に張力をかける
際に、上記巻取装置の機械的損失分を補償すべく巻取装
置用電動機の起動後の速度に応じて該巻取装置用電動機
に対する補償制御を行うことによって、上記圧延材の張
力を制御する方法において、圧延機用電動機に対して速度指令信号を出力すると共
に、該速度指令信号に基づいて上記巻取装置用電動機に
対する初期補償制御を所定時間継続したのち上記初期補
償制御の補償制御出力量を漸減的に小さくして当該初期
補償制御を終了することを特徴とする圧延材の張力制御
方法。3. A winding device for rewinding a rolled material toward a rolling mill at a predetermined winding speed and / or a winding device for winding a rolled material passing through the rolling machine at a predetermined winding speed. In a rolling facility equipped with a device, when tension is applied to a rolled material between a rolling mill and a winding device by controlling the winding speed of the winding device, the mechanical loss of the winding device is compensated. A method for controlling the tension of the rolled material by performing compensation control on the winding device motor in accordance with the speed of the winding device motor after the start-up, so that the speed command signal is transmitted to the rolling device motor. Is output, and the initial compensation control for the electric motor for the winding device is continued for a predetermined time based on the speed command signal, and thereafter, the compensation control output amount of the initial compensation control is gradually reduced, and the initial compensation control is terminated. Rolled material characterized by Force control method.

【請求項４】圧延機に向けて圧延材を所定の巻取速度
で巻き戻す巻取装置及び圧延機を通過した圧延材を所定
の巻取速度で巻き取る巻取装置の少なくとも一方の巻取
装置を備えた圧延設備で、上記巻取装置の巻取速度を制
御して圧延機と巻取装置との間の圧延材に張力をかける
際に、上記巻取装置の機械的損失分を補償すべく巻取装
置用電動機の起動後の速度に応じて該巻取装置用電動機
に対する補償制御を行うことによって、上記圧延材の張
力を制御する方法において、圧延機用電動機の起動の検出信号により該巻取装置用電
動機に対する初期補償制御を開始すると共に、巻取装置
用電動機の起動の検出に応じて巻取装置用電動機に対す
る上記初期補償制御の補償制御出力量を漸減的に小さく
して当該初期補償制御を終了することを特徴とする圧延
材の張力制御方法。4. A winding device for rewinding a rolled material to a rolling mill at a predetermined winding speed and / or a winding device for winding a rolled material passing through the rolling machine at a predetermined winding speed. In a rolling facility equipped with a device, when tension is applied to a rolled material between a rolling mill and a winding device by controlling the winding speed of the winding device, the mechanical loss of the winding device is compensated. In order to control the tension of the rolled material by performing compensation control on the winding device motor in accordance with the speed of the winding device motor after starting, the detection signal of the starting of the rolling device motor is used. Starting the initial compensation control for the motor for the winding device, the compensation control output amount of the initial compensation control for the motor for the winding device is gradually reduced in accordance with detection of activation of the motor for the winding device, and Ends initial compensation control Tension control method of the rolled material to be.

【請求項５】巻取装置用電動機が起動した後の上記初
期補償制御の補償制御出力量を、巻取装置用電動機の巻
取速度の上昇に応じて漸減的に小さくすることを特徴と
する請求項３又は請求項４に記載した圧延材の張力制御
方法。5. The method according to claim 1, wherein the amount of the compensation control output of the initial compensation control after the motor for the winding device is started is gradually reduced in accordance with an increase in the winding speed of the motor for the winding device. A method for controlling the tension of a rolled material according to claim 3 or 4.

【請求項６】巻取装置用電動機が起動した後の上記初
期補償制御の補償制御出力量を漸減的に小さくする際
に、巻取速度の上昇に応じて当該補償制御出力量の減少
率を段階的に変更することを特徴とする請求項５に記載
した圧延材の張力制御方法。6. When the amount of compensation control output of the initial compensation control after the motor for the winding device is started is gradually reduced, the rate of decrease in the amount of compensation control output is increased in accordance with an increase in the winding speed. The method according to claim 5, wherein the tension is changed stepwise.