JPS6363562A - Oscillation method for mold in continuous casting - Google Patents

Oscillation method for mold in continuous casting

Info

Publication number
JPS6363562A
JPS6363562A JP20924086A JP20924086A JPS6363562A JP S6363562 A JPS6363562 A JP S6363562A JP 20924086 A JP20924086 A JP 20924086A JP 20924086 A JP20924086 A JP 20924086A JP S6363562 A JPS6363562 A JP S6363562A
Authority
JP
Japan
Prior art keywords
mold
circuit
swing cylinder
continuous casting
detector
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.)
Pending
Application number
JP20924086A
Other languages
Japanese (ja)
Inventor
Kazutoshi Sakaki
和敏 榊
Toshitaka Yamamoto
山本 敏隆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP20924086A priority Critical patent/JPS6363562A/en
Publication of JPS6363562A publication Critical patent/JPS6363562A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To execute a stable oscillation by feeding back under consideration of a mold acceleration detecting signal at the time of feeding back a mold position assumed value into a mold position control circuit. CONSTITUTION:In the mold position assumed circuit 12, the detecting signal from the position detector 6 and a pressure detectors 7, 8 is feeded back, to assume the position of mold 1 and the signal is transmitted to an arithmetic circuit 15 from the mold position assumed circuit 12. Further, the detecting signal from the mold acceleration detector 5, too, is feeded back into an arithmetic circuit 16 of control circuit 11. In this way, the mold acceleration, too, is feeded back into the control system, and so an effect of the natural frequency is reduced and the stable oscillation is executed.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、連続鋳造機におけるモールドオシュレーシ
ョン方法に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a mold oscillation method in a continuous casting machine.

(従来の技術) 連続鋳造機のモールドオシュレーション方法においては
、モールドの位置を直接検出し、検出器からの位置検出
信号を、モールドを揺動する揺動シリンダの制御系にフ
ィードバックするのが理想である。しかしモールド周囲
は高温であり、スケールが飛散しているため、モールド
の位置を直接検出することはきわめて困難である。
(Prior art) In the mold oscillation method for continuous casting machines, it is ideal to directly detect the position of the mold and feed back the position detection signal from the detector to the control system of the swing cylinder that swings the mold. It is. However, since the temperature around the mold is high and the scale is scattered, it is extremely difficult to directly detect the position of the mold.

そこで従来は、第2図に示すようにモールド1を揺動す
る揺動シリンダ4の位置を位置検出器6により検出し、
該検出器6からの位置検出信号を揺動シリンダ4の制御
回路17にフィードバックすることにより、モールドの
オシュレーションを行っていた。
Therefore, conventionally, as shown in FIG. 2, the position of the swing cylinder 4 that swings the mold 1 is detected by a position detector 6.
The mold oscillation was performed by feeding back the position detection signal from the detector 6 to the control circuit 17 of the swing cylinder 4.

(発明が解決しようとする問題点) しかし、前記従来のオシュレーション装置では、揺動シ
リンダの位置のみを検出しているため、第6図に示すよ
うにモールド1の位置波形は特定周波数で駆動した場合
ビーム2の固有振動数を含んだ振動波形となるので、第
5図に示すように揺動シリンダの位置波形とモールド推
定位置波形とが異なったものとなり、安定したオシュレ
ーションを行うことができないという問題があった。
(Problem to be Solved by the Invention) However, since the conventional oscillation device detects only the position of the swing cylinder, the position waveform of the mold 1 is driven at a specific frequency as shown in FIG. In this case, the vibration waveform will include the natural frequency of beam 2, so the position waveform of the swing cylinder and the estimated mold position waveform will be different, as shown in Figure 5, making it difficult to perform stable oscillation. The problem was that I couldn't do it.

この発明は以上の問題点を解決すべく案出されたもので
、モールドの位置を直接測定することなく、しかも安定
したオシュレーションを行うことができる連続鋳造機の
モールドオシュレーション装置を提供することを目的と
する。
This invention was devised to solve the above problems, and an object of the present invention is to provide a mold oscillation device for a continuous casting machine that can perform stable oscillation without directly measuring the position of the mold. With the goal.

(問題点を解決するための手段) この発明の連続鋳造機のオシュレーション方法は、連続
鋳造機のモールドを揺動させる揺動シリンダの位置およ
び圧力を検出し、該検出信号をモールド位置推定回路に
送出してモールド′の位置を推定し、モールド位置推定
値をモールドの位置制御回路へフィートバンクする際、
モールドの位置波形に対する固有振動の影響を低減する
ため、モールド加速度検出信号を加味してフィードバン
クすることを特徴とする。
(Means for Solving the Problems) The oscillation method for a continuous casting machine of the present invention detects the position and pressure of a swinging cylinder that swings a mold of a continuous casting machine, and transmits the detection signal to a mold position estimation circuit. to estimate the position of the mold ′, and footbank the estimated mold position to the mold position control circuit.
In order to reduce the influence of natural vibration on the position waveform of the mold, a feature is that feedbanking is performed in consideration of the mold acceleration detection signal.

(実施例) 以下、本発明を図面に示す実施例に基いて説明する。(Example) Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

第1図は本発明の実施例を示す側面図である。FIG. 1 is a side view showing an embodiment of the present invention.

モールド1は四辺リンク2およびビーム6により支持さ
れており、ビーム先端に枢着された揺動シリンダ4によ
り上下に揺動される。モールド′1にはモールド加速度
検出器5が取付けられており、揺動シリンダ4の周囲に
は揺動シリンダ4の位置、圧力を検出する位置検出器6
、圧力検出器7,8が取付けられている。
The mold 1 is supported by four-sided links 2 and a beam 6, and is swung up and down by a swing cylinder 4 pivotally attached to the tip of the beam. A mold acceleration detector 5 is attached to the mold '1, and a position detector 6 is installed around the swing cylinder 4 to detect the position and pressure of the swing cylinder 4.
, pressure detectors 7 and 8 are attached.

揺動シリンダ4に通じる油路には、サーボアンプ9によ
り制御されるサーボ弁10が取付けられており、該サー
ボ弁10により揺動シリンダ4の王室または王室に通じ
る油路の一方が交互に開放されて、揺動シリンダ4は上
下動する。
A servo valve 10 controlled by a servo amplifier 9 is attached to the oil passage leading to the swing cylinder 4, and the servo valve 10 alternately opens the oil passage of the swing cylinder 4 or the oil passage leading to the crown. As a result, the swing cylinder 4 moves up and down.

前記サーボアンプ9、サーボ弁10を制御する制御回路
11は、モールド位置推定回路12と補償器13および
アンバランスゲイン14から構成され、この制御回路1
1にはモールド振動の設定量に基く入力信号が入力され
る。前記モールド位置推定回路12には、位置検出器6
および圧力検出器7,8からの検出信号がフィードバッ
クされてモールド1の位置が推定され、モールド位置推
定回路12から演算回路15に信号が送られる。またモ
ールド加速度検出器5からの検出信号も、制御回路11
の演算回路16にフィードバックされる。
A control circuit 11 that controls the servo amplifier 9 and the servo valve 10 is composed of a mold position estimating circuit 12, a compensator 13, and an unbalance gain 14.
1 receives an input signal based on a set amount of mold vibration. The mold position estimation circuit 12 includes a position detector 6.
The detection signals from the pressure detectors 7 and 8 are fed back to estimate the position of the mold 1, and a signal is sent from the mold position estimation circuit 12 to the arithmetic circuit 15. Furthermore, the detection signal from the mold acceleration detector 5 is also transmitted to the control circuit 11.
is fed back to the arithmetic circuit 16.

ところで、ビーム3の左辺(モールド1側)長さを1−
Jy、右辺(揺動シリンダ4側)長さをLx、揺動シリ
ンダ4の変位をx1ビーム3のバネ定数をk、揺動シリ
ンダ4の受圧面積をA、揺動シリンダ4の上室圧力をP
l、下室圧力をP2、シリンダ摩擦力をf1サーボアン
プ電流を1とすると、モールド1の変位yは次式より求
められる。
By the way, the length of the left side of beam 3 (mold 1 side) is 1-
Jy, the length of the right side (swinging cylinder 4 side) is Lx, the displacement of swinging cylinder 4 is x1, the spring constant of beam 3 is k, the pressure receiving area of swinging cylinder 4 is A, the upper chamber pressure of swinging cylinder 4 is P
When the lower chamber pressure is P2, the cylinder friction force is f1, and the servo amplifier current is 1, the displacement y of the mold 1 can be obtained from the following equation.

(ここで関数fθ1n(i)は揺動シリンダ4のパツキ
ン抵抗に基く関数であり、1が正のときは+1.1が負
のときは−1となる。) 従って上式を実現する電気回路をモールド位置推定回路
12とすれば、モールド1の変位yを正確に求めること
ができる。
(Here, the function fθ1n(i) is a function based on the packing resistance of the swing cylinder 4, and when 1 is positive, it is +1. When it is negative, it is -1.) Therefore, an electric circuit that realizes the above equation If y is used as the mold position estimating circuit 12, the displacement y of the mold 1 can be accurately determined.

次に揺動シリンダ4の位置およびモールド加速度を制御
系にフィードバックした場合の正弦波によるモールド位
置の波形およびステップ応答による波形を第4図に示す
。なお第6図は揺動シリンダの位置のみを制御系にフィ
ードバックした場合の同様の波形を示す。第6図に示す
ように揺動シリンダ4の位置のみを制御系にフィードバ
ックした場合には、ビーム3のバネ定数およびモールド
1の重量で決定される固有振動数の影響が太きい。これ
に対し本発明のようにモールド加速度も制御系にフィー
ドバックすれば前記固有振動数の影響を低減できる。
Next, FIG. 4 shows the waveform of the mold position due to a sine wave and the waveform due to a step response when the position of the swing cylinder 4 and the mold acceleration are fed back to the control system. Note that FIG. 6 shows similar waveforms when only the position of the swing cylinder is fed back to the control system. When only the position of the swing cylinder 4 is fed back to the control system as shown in FIG. 6, the influence of the natural frequency determined by the spring constant of the beam 3 and the weight of the mold 1 is large. On the other hand, if the mold acceleration is also fed back to the control system as in the present invention, the influence of the natural frequency can be reduced.

第6図は本発明におけるモールド位置測定値およびモー
ルド位置推定値の波形を示すものである。図示したよう
に双方の波形はほとんど同じであるため、安定したオシ
ュレーションを行うことができる。
FIG. 6 shows waveforms of mold position measurement values and mold position estimation values in the present invention. As shown in the figure, since both waveforms are almost the same, stable oscillation can be performed.

(発明の効果) ■ モールド加速度検出器からの検出信号と揺動シリン
ダの位置検出器からの検出信号および揺動シリンダの圧
力検出器からの検出信号を揺動シリンダの制御系にフィ
ードバックすることにより、モールド位置測定値とほぼ
等しいモールド位置推定値が得られる。また、ビーム固
有振動数の影響を低減できるため、安定したオシュレー
ションを行うことができる。
(Effects of the invention) ■ By feeding back the detection signal from the mold acceleration detector, the detection signal from the position detector of the swing cylinder, and the detection signal from the pressure detector of the swing cylinder to the control system of the swing cylinder. , a mold position estimate approximately equal to the mold position measurement is obtained. Furthermore, since the influence of the beam's natural frequency can be reduced, stable oscillation can be performed.

■ モールド位置を直接測定する必要がないので、機構
上および環境上の問題を回避できる。
■ Mechanical and environmental problems can be avoided because there is no need to directly measure the mold position.

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

第1図は本発明のモールトオシュレーション装置の側面
図および回路図、第2図は従来のモールドオシュレーシ
ョン装置の側面図および回路図、第3図は揺動シリンダ
の位置のみを制御系にフィードバックした場合の正弦波
によるモールド位置の波形およびステップ応答による波
形を示すグラフ、第4図は揺動シリンダの位置およびモ
ールド加速度を制御系にフィードバックした場合の同様
の波形を示すクラブ、第5図は従来例における揺動シリ
ンダの位置およびモールド推定位置の波形を示すグラフ
、第6図は本発明におけるモールド位置測定値およびモ
ールド位置推定値の波形を示すグラフである。 1・・モールド、2・・四辺リンク、3・・ビーム、4
・・揺動シリンダ、5・・モールド加速度検出器、6・
・位置検出器、7,8・・圧力検出器、9・・サーボア
ンプ、10・・サーボ弁、11 ・・制御回路、12・
・モールド位置推定回路、16・・補償器、14・・ア
ンバランスゲイン、15.16・・演算回路、17・・
制御回路。 変位(団) 第5間 ”7 %−k)ジど\ 第4図 第6図
Fig. 1 is a side view and circuit diagram of the mold oscillation device of the present invention, Fig. 2 is a side view and circuit diagram of a conventional mold oscillation device, and Fig. 3 is feedback of only the position of the swing cylinder to the control system. Figure 4 is a graph showing the waveform of the mold position due to the sine wave and the waveform due to the step response when the swing cylinder position and mold acceleration are fed back to the control system. FIG. 6 is a graph showing the waveforms of the position of the swing cylinder and the estimated mold position in the conventional example, and FIG. 6 is a graph showing the waveforms of the measured mold position value and the estimated mold position value in the present invention. 1...Mold, 2...Four side links, 3...Beam, 4
・・Swinging cylinder, 5・・Mold acceleration detector, 6・
・Position detector, 7, 8...Pressure detector, 9...Servo amplifier, 10...Servo valve, 11...Control circuit, 12...
- Mold position estimation circuit, 16... Compensator, 14... Unbalance gain, 15.16... Arithmetic circuit, 17...
control circuit. Displacement (group) 5th interval "7%-k) Jido\ Figure 4 Figure 6

Claims (1)

【特許請求の範囲】[Claims] 連続鋳造機のモールドを揺動させる揺動シリンダの位置
および圧力を検出し、該検出信号をモールド位置推定回
路に送出してモールドの位置を推定し、モールド位置推
定値をモールドの位置制御回路へフィードバックする際
、モールドの位置波形に対する固有振動の影響を低減す
るため、モールド加速度検出信号を加味してフィードバ
ックすることを特徴とする連続鋳造機におけるモールド
オシュレーション方法。
Detects the position and pressure of the swing cylinder that swings the mold of the continuous casting machine, sends the detection signal to the mold position estimation circuit to estimate the mold position, and sends the estimated mold position value to the mold position control circuit. A mold oscillation method for a continuous casting machine, characterized in that when feeding back, in order to reduce the influence of natural vibration on the position waveform of the mold, feedback is given in consideration of a mold acceleration detection signal.
JP20924086A 1986-09-05 1986-09-05 Oscillation method for mold in continuous casting Pending JPS6363562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20924086A JPS6363562A (en) 1986-09-05 1986-09-05 Oscillation method for mold in continuous casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20924086A JPS6363562A (en) 1986-09-05 1986-09-05 Oscillation method for mold in continuous casting

Publications (1)

Publication Number Publication Date
JPS6363562A true JPS6363562A (en) 1988-03-19

Family

ID=16569679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20924086A Pending JPS6363562A (en) 1986-09-05 1986-09-05 Oscillation method for mold in continuous casting

Country Status (1)

Country Link
JP (1) JPS6363562A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5458182A (en) * 1993-10-21 1995-10-17 Hitachi Zosen Corporation Mold vibrating apparatus in continuous casting equipment
FR2718987A1 (en) * 1994-04-20 1995-10-27 Lorraine Laminage Method for controlling continuous casting

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49896U (en) * 1972-04-03 1974-01-07
JPS5543615B2 (en) * 1974-01-11 1980-11-07
JPS57112962A (en) * 1980-12-29 1982-07-14 Nippon Steel Corp Detection of abnormality of mold in continuous casting
JPS6027461A (en) * 1983-07-22 1985-02-12 Kobe Steel Ltd Method and device for controlling casting mold vibrator
JPS6061150A (en) * 1983-09-13 1985-04-08 Nisshin Steel Co Ltd Foreseeing method of breakout in continuous casting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49896U (en) * 1972-04-03 1974-01-07
JPS5543615B2 (en) * 1974-01-11 1980-11-07
JPS57112962A (en) * 1980-12-29 1982-07-14 Nippon Steel Corp Detection of abnormality of mold in continuous casting
JPS6027461A (en) * 1983-07-22 1985-02-12 Kobe Steel Ltd Method and device for controlling casting mold vibrator
JPS6061150A (en) * 1983-09-13 1985-04-08 Nisshin Steel Co Ltd Foreseeing method of breakout in continuous casting

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5458182A (en) * 1993-10-21 1995-10-17 Hitachi Zosen Corporation Mold vibrating apparatus in continuous casting equipment
CN1050549C (en) * 1993-10-21 2000-03-22 日立造船株式会社 Device for vibrating casting mold in continous casting apparatus
FR2718987A1 (en) * 1994-04-20 1995-10-27 Lorraine Laminage Method for controlling continuous casting

Similar Documents

Publication Publication Date Title
KR900000059A (en) Anti-arrhythmic assisted regulator using pre-release periods to distinguish between physiological and pathological deficits
JPS6363562A (en) Oscillation method for mold in continuous casting
CN109387269A (en) Weighing flow control methods and device and storage medium
KR940022071A (en) Force meter
JPS5825217B2 (en) Electric dynamometer torque measurement method
GB1523648A (en) Apparatus for determining a power function
JPH01321285A (en) Instrument for measuring installation accuracy of elevator guide rail
Stuart-Watson et al. Simple force balance accelerometer/seismometer based on a tuning fork displacement sensor
SU481840A1 (en) The method of measuring the velocity head
JPS56137128A (en) Knocking detection
SU719694A1 (en) Device for determining metal content in ore flow
SU972245A1 (en) Weight measuring device
SU550523A2 (en) Method of multi-parameter electromagnetic control
JPS5520425A (en) Load measuring method and its unit in impulsive test of material
SU878336A1 (en) Method of controlling size of loose materials
SU723361A1 (en) Apparatus for measuring displacement and tension of tape carrier
SU1429007A1 (en) Electromagnetic flaw detector
SU769732A1 (en) Converter of output parameter of resistive sensor into frequency
SU1552085A1 (en) Apparatus for electromagnetic inspection
SU127066A1 (en) The way to control the macrostructure of cast non-magnetic austenitic steel
JPH0295239A (en) Microhardness meter
JPS5788329A (en) Measuring device for acoustic characteristic
JPS61210274A (en) Turbine governor
JPS62127902A (en) Process controller
JPH0812104B2 (en) Weight measuring device for traveling vehicle