JPH0372539B2 - - Google Patents
Info
- Publication number
- JPH0372539B2 JPH0372539B2 JP57175378A JP17537882A JPH0372539B2 JP H0372539 B2 JPH0372539 B2 JP H0372539B2 JP 57175378 A JP57175378 A JP 57175378A JP 17537882 A JP17537882 A JP 17537882A JP H0372539 B2 JPH0372539 B2 JP H0372539B2
- Authority
- JP
- Japan
- Prior art keywords
- catenary
- tension
- detector
- control
- control device
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 230000032258 transport Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002789 length control Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
- B65H23/10—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on running web
- B65H23/105—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on running web and controlling web tension
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、鉄鋼プロセスラインにおけるカテナ
リ制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a catenary control device in a steel process line.
鉄鋼プロセスラインにおいては、カテナリ（鉄
板のたるみ）を一定に保つ必要があり、特に第１
図に示すように通路が狭く余裕があまりない障害
物１がある場合は、その重要性が非常に大きい。
In steel process lines, it is necessary to keep the catenary (sag of the steel plate) constant, especially in the first
As shown in the figure, if the passage is narrow and there is an obstacle 1 with little room, it is very important.
しかしながら、従来技術では、第１図に示した
ような場合には、十分対応できなかつた。 However, the conventional technology could not adequately cope with the case shown in FIG.
すなわち、カテナリを制御するには、カテナリ
そのものを検出して制御する技術と、カテナリと
張力とが一定の関係を有することを利用して、張
力を検出して制御する技術とが知られているが、
前者は、鋼板のよじれによつて、後者は、鋼板の
断面積変化やメカロスによつて検出誤差が生じ、
高精度のカテナリ制御は実現できなかつた。 In other words, in order to control the catenary, there are two known techniques: one that detects and controls the catenary itself, and the other that detects and controls tension by utilizing the fact that the catenary and tension have a certain relationship. but,
The former causes detection errors due to twisting of the steel plate, and the latter causes detection errors due to changes in the cross-sectional area of the steel plate and mechanical loss.
High-precision catenary control could not be achieved.
また、特開昭57−160854号公報に示すように、
張力制御系と材料長さ一定制御系を備え、通常は
張力制御系によつて制御を行い、材料張力と所定
の値との偏差が一定値以内になつたときに材料長
さ一定制御系に切替えるというカテナリ制御装置
が提案されているが、張力偏差が小になつた状態
が制御が安定した状態であるという判断基準であ
り、かつ長さ一定制御系に切替える構成であるた
め、切替え前後において直接カテナリ量を検出し
ているものは何もなく、メカロスなどによる検出
誤差があると常に基準位置からずれた状態で運転
することになり、第１図に示すような余裕がない
場合は非常に危険な運転となる。 In addition, as shown in Japanese Patent Application Laid-Open No. 57-160854,
Equipped with a tension control system and a constant material length control system, control is normally performed by the tension control system, and when the deviation between the material tension and a predetermined value is within a certain value, the constant material length control system is activated. A catenary control system has been proposed in which the control system switches to a constant length control system, but the criterion is that the control is stable when the tension deviation becomes small. There is nothing that directly detects the amount of catenary, and if there is a detection error due to mechanical loss, etc., the operation will always be deviated from the reference position, and if there is no margin as shown in Figure 1, it will be extremely difficult. This is dangerous driving.
そこで本発明は、第１図に示すような余裕のな
い障害物等がある場合でも高精度なカテナリ制御
を行うことのできる制御装置を提供しようとする
ものである。 SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a control device that can perform highly accurate catenary control even when there is an obstacle such as the one shown in FIG.
本発明は上記の問題点を解決するためになされ
たものであつて、ロール間の所定のカテナリを有
して材料を搬送する鉄鋼プロセスラインにおい
て、前記鉄鋼プロセスラインの速度制御装置に張
力検出器の検出値を帰還させる張力制御用帰還ル
ープを持つ張力設定器と張力制御部とから成る張
力制御装置を接続し、且つカテナリ設定器とカテ
ナリの位置を直接検出するカテナリ検出器を設
け、該カテナリ検出器の検出値とカテナリ設定値
の偏差を張力補正量として不感帯要素を介して前
記張力制御装置の張力設定値入力部に与えるよう
にしたものである。
The present invention has been made in order to solve the above problems, and includes a tension detector installed in a speed control device of the steel process line in a steel process line that conveys materials with a predetermined catenary between rolls. A tension control device consisting of a tension control section and a tension setting device having a tension control feedback loop for feeding back a detected value of The deviation between the detected value of the detector and the catenary set value is applied as a tension correction amount to the tension set value input section of the tension control device via a dead zone element.
本発明は板のよじれによる外乱の影響を受けな
い張力制御をメインとし、板のよじれによる誤位
置検出を不感帯要素の仂きによつて避けながら位
置の直接検出による確実な補正をかけることでカ
テナリ位置を一定に保つ方法であるため、障壁が
第１図に示すようにカテナリ状で、あまり余裕が
ない場合でもカテナリ検出器より自動的に基準位
置にもつてこれるので、安定した制御が行なえ
る。
The main feature of the present invention is tension control that is not affected by disturbances caused by the twisting of the plate, and avoids incorrect position detection due to the twisting of the plate by passing through the dead band element, while applying reliable correction through direct position detection. Since this method keeps the position constant, even if the barrier has a catenary shape as shown in Figure 1 and there is not much room, the catenary detector will automatically bring it to the reference position, allowing for stable control. .
以下本発明の実施例を図面に基づき説明すれば
次の通りである。
Embodiments of the present invention will be described below based on the drawings.
第２図は本発明の一実施例のブロツク図、鋼板
２は入側ロール３、中間ロール４及び出側ロール
５を経て図示しない巻取機によつて巻取られる。 FIG. 2 is a block diagram of one embodiment of the present invention, in which the steel plate 2 passes through an entry roll 3, an intermediate roll 4, and an exit roll 5, and is wound up by a winder (not shown).
Ａは速度制御装置、Ｂは張力制御用帰還ループ
（主帰還ループ）で、張力設定器６で設定された
張力と張力検出器１５で検出された張力が一致す
るよう張力制御部７にて制御される。 A is a speed control device, and B is a feedback loop for tension control (main feedback loop), which is controlled by a tension control unit 7 so that the tension set by the tension setting device 6 and the tension detected by the tension detector 15 match. be done.
また、鋼板２のカテナリは、カテナリの位置を
直接検出するカテナリ検出器１６で検出され、カ
テナリ設定器１７で設定されたカテナリと比較さ
れ、不感帯要素１８で規定される不感帯以上の偏
差が生ずれば、張力設定を補正する。つまり、カ
テナリ検出器１６、カテナリ設定器１７、不感帯
要素１８及び積分要素１９から成るループは、張
力制御装置の副帰還ループＣを構成する。 Further, the catenary of the steel plate 2 is detected by a catenary detector 16 that directly detects the position of the catenary, and is compared with the catenary set by a catenary setting device 17, and a deviation larger than the dead band defined by the dead band element 18 is detected. For example, correct the tension setting. That is, the loop made up of the catenary detector 16, catenary setter 17, dead zone element 18, and integral element 19 constitutes a sub-feedback loop C of the tension control device.
なお、副帰還ループ中の積分要素１９は副帰還
信号の急激な変動をおさえるためのものである。 Note that the integral element 19 in the sub-feedback loop is for suppressing sudden fluctuations in the sub-feedback signal.
図中８は速度制御部、９は電流制御部、１０は
出側ロール電動機制御部、１１は電流検出器、１
２，１３は電動機、TG1，TG2は速度検出器であ
る。 In the figure, 8 is a speed control section, 9 is a current control section, 10 is an output roll motor control section, 11 is a current detector, 1
2 and 13 are electric motors, and TG 1 and TG 2 are speed detectors.
以上述べた構成は、従来技術では得られない次
のような効果を生ずる。
The configuration described above produces the following effects that cannot be obtained with the prior art.
すなわち、鋼板のよじれは、張力検出器１５に
は影響しないので、主帰還ループＢによつて安定
性のある制御を行ない得る。さらに、鋼板の通常
的なよじれは、不感帯要素１８によつて無視され
るので、鋼板のよじれが主帰還ループＢに悪影響
を及ぼすことはない。 That is, since the twist of the steel plate does not affect the tension detector 15, stable control can be performed by the main feedback loop B. Furthermore, normal kinks in the steel plate are ignored by the deadband element 18, so that kinks in the steel plate do not adversely affect the main feedback loop B.
前記主帰還ループによる制御を実行中、鋼板の
断面積変化やメカロスによつて所定のカテナリが
保持できなくなつとき、つまり、カテナリの偏差
が、前記不感帯領域を突破したとき、副帰還ルー
プＣが作用し、張力設定を補正することにより、
ほぼ所定のカテナリを維持することが可能とな
る。 During control by the main feedback loop, when a predetermined catenary cannot be maintained due to changes in the cross-sectional area of the steel plate or mechanical loss, that is, when the catenary deviation exceeds the dead zone region, the sub-feedback loop C is activated. By acting and correcting the tension settings,
It becomes possible to maintain approximately a predetermined catenary.
このように、本発明によれば、従来でなかつた
高精度のカテナリ制御を実現できる。 As described above, according to the present invention, highly accurate catenary control that has not been possible in the past can be realized.
このため、製造工程で鋼板を冷したくない要望
があるときなど、第１図に示した障害物１を、断
熱板として、鋼板の放熱を防ぐように、積極的に
配置することができ、省エネルギーにも大いに貢
献できる。 Therefore, when there is a desire not to cool the steel plate during the manufacturing process, the obstacle 1 shown in Fig. 1 can be actively placed as a heat insulating plate to prevent heat radiation from the steel plate. It can also greatly contribute to energy conservation.
第１図は、本発明が適用される状態を示す図、
第２図は、本発明の一実施例のブロツク図であ
る。
Ａ……速度制御装置、Ｂ……張力制御用帰還ル
ープ（主帰還ループ）、Ｃ……副帰還ループ、２
……鋼板、６……張力設定器、１６……カテナリ
検出器、１７……カテナリ設定器、１８……不感
帯要素、１９……積分要素。
FIG. 1 is a diagram showing a state in which the present invention is applied;
FIG. 2 is a block diagram of one embodiment of the present invention. A...Speed control device, B...Tension control feedback loop (main feedback loop), C...Sub feedback loop, 2
... steel plate, 6 ... tension setting device, 16 ... catenary detector, 17 ... catenary setting device, 18 ... dead zone element, 19 ... integral element.
Claims (1)
送する鉄鋼プロセスラインにおいて、前記鉄鋼プ
ロセスラインの速度制御装置Ａに張力検出器１５
の検出値を帰還させる張力制御用帰還ループＢを
持つ張力設定器６と張力制御部７とから成る張力
制御装置を接続し、且つカテナリ設定器１７とカ
テナリの位置を直接検出するカテナリ検出器１６
とを設け、該カテナリ検出器１６の検出値とカテ
ナリ設定値の偏差を張力補正量として不感帯要素
１８を介して前記張力制御装置の張力設定入力部
に与えるようにしたことを特徴とするカテナリ制
御装置。1. In a steel process line that transports material between rolls with a predetermined catenary, a tension detector 15 is installed in the speed control device A of the steel process line.
A catenary detector 16 connects a tension control device consisting of a tension setting device 6 and a tension control section 7 having a feedback loop B for tension control that feeds back the detected value of the catenary setting device 17 and directly detects the position of the catenary.
and the deviation between the detected value of the catenary detector 16 and the catenary set value is applied as a tension correction amount to the tension setting input section of the tension control device via the dead zone element 18. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17537882A JPS5969337A (en) | 1982-10-07 | 1982-10-07 | Catenary control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17537882A JPS5969337A (en) | 1982-10-07 | 1982-10-07 | Catenary control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5969337A JPS5969337A (en) | 1984-04-19 |
| JPH0372539B2 true JPH0372539B2 (en) | 1991-11-19 |
Family
ID=15995055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17537882A Granted JPS5969337A (en) | 1982-10-07 | 1982-10-07 | Catenary control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5969337A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2592987B2 (en) * | 1990-09-29 | 1997-03-19 | 中外炉工業 株式会社 | Catenary position control method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57160854A (en) * | 1981-03-25 | 1982-10-04 | Mitsubishi Electric Corp | Catenary controller |
-
1982
- 1982-10-07 JP JP17537882A patent/JPS5969337A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57160854A (en) * | 1981-03-25 | 1982-10-04 | Mitsubishi Electric Corp | Catenary controller |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5969337A (en) | 1984-04-19 |
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