JPH05331791A - Device for controlling production of paper machine - Google Patents
Device for controlling production of paper machineInfo
- Publication number
- JPH05331791A JPH05331791A JP13734392A JP13734392A JPH05331791A JP H05331791 A JPH05331791 A JP H05331791A JP 13734392 A JP13734392 A JP 13734392A JP 13734392 A JP13734392 A JP 13734392A JP H05331791 A JPH05331791 A JP H05331791A
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- JP
- Japan
- Prior art keywords
- speed
- basis weight
- value
- controller
- amount
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、紙パルプ産業における
抄紙機の生産量制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production control device for a paper machine in the pulp and paper industry.
【０００２】[0002]
【従来の技術】従来の制御装置は、生産量設定値つま
り、ワイヤーにて搬送される紙の速度を制御するワイヤ
ー速度制御と、紙の品質を一定にするため、紙に含まれ
るパルプ量（重量）を測定し、紙料内のパルプ含有量を
制御する坪量制御と、坪量制御の指令に基づきパルプの
噴出量を制御するパルプ吐出量制御と、の３要素より構
成されており、従来の生産量制御は、予め決められた速
度設定値に基づき速度制御を行うものを主体とし、坪量
制御及びパルプ吐出量制御とは切り離されたものであっ
た。2. Description of the Related Art A conventional control apparatus controls a production amount set value, that is, a wire speed control for controlling the speed of paper conveyed by a wire, and an amount of pulp contained in the paper in order to keep the quality of the paper constant. (Weight) is measured, and the grammage control for controlling the pulp content in the stock, and the pulp discharge amount control for controlling the ejection amount of the pulp based on the command for the grammage control are configured by three elements, In the conventional production amount control, the speed control is mainly performed based on a predetermined speed set value, and it is separated from the basis weight control and the pulp discharge amount control.
【０００３】[0003]
【発明が解決しようとする課題】従来の方式では、生産
量の設定はあくまでオペレータによって決定されている
ため、プロセス上紙の生産に対し、その能力が余ってい
てもそれが生産量制御へ反映されていないことが問題点
と言える。In the conventional method, since the setting of the production amount is decided by the operator to the last, even if the capacity of the process paper is surplus, it is reflected in the production amount control. The problem is that it is not done.
【０００４】本発明では、プロセス上紙を製造するうえ
で供給元であるパルプ吐出量に能力が余っている場合、
その値を用いて生産量を決める速度制御の設定値を自動
的に決定することのできる抄紙機の生産量制御装置を提
供することを目的とする。In the present invention, when the pulp discharge amount, which is the supply source, is excessive in producing the process paper,
It is an object of the present invention to provide a production amount control device for a paper machine, which can automatically determine a set value for speed control that determines the production amount using the value.
【０００５】[0005]
【課題を解決するための手段】本発明は、吐出されたパ
ルプの搬送する速度を調整する抄紙機用の速度モータ
と、この速度モータの回転速度を検出する速度検出器
と、この速度検出器で検出した速度モータの速度測定値
と速度設定器で予め定めた速度設定値とが一致するよう
に速度モータを運転操作する速度コントローラと、坪量
検出器で検出したパルプの測定坪量と坪量設定器で予め
定めた設定坪量値とが一致するようにパルプの吐出圧設
定値を決定する坪量コントローラと、吐出されるパルプ
の吐出圧力が坪量コントローラで設定された吐出圧設定
値となるように紙料ポンプを運転制御する吐出圧力コン
トローラと、この吐出圧力コントローラからの操作量と
予め定めたポンプ有効上限回転数とを比較して操作余裕
量を算出する操作余裕量算出回路と、操作余裕量から速
度増量分を折線パターンで求めて速度増量値とする速度
増量回路と、坪量検出器で検出した測定坪量と予め定め
た設定坪量値を比較して操作逸脱量を算出する操作逸脱
量算出回路と、測定坪量が設定坪量値より少ない場合に
速度減速量を折線パターンで求めて速度減量値とする速
度減量回路と、この速度減量回路および速度増量回路の
出力変化を制限して速度コントローラに入力する変化率
制限回路とを具備してなる抄紙機の生産量制御装置であ
る。SUMMARY OF THE INVENTION The present invention is a speed motor for a paper machine for adjusting the speed at which discharged pulp is conveyed, a speed detector for detecting the rotational speed of the speed motor, and the speed detector. The speed controller that operates the speed motor so that the speed measurement value of the speed motor detected in step 3 and the speed setting value that is set in advance by the speed setter match, and the measured basis weight and basis weight of the pulp detected by the basis weight detector. A grammage controller that determines the discharge pressure set value of the pulp so that it matches the preset grammage value set by the amount setter, and the discharge pressure of the discharged pulp is set by the grammage controller. The operation allowance to calculate the operation allowance by comparing the operation amount from the discharge pressure controller that controls the operation of the stock pump so that The calculation circuit and the speed increase circuit that calculates the speed increase amount from the operation allowance with a polygonal line pattern as the speed increase value, and the measured basis weight detected by the basis weight detector and the preset basis weight value are compared and operated. An operation deviation amount calculation circuit for calculating the deviation amount, a speed deceleration circuit for obtaining the speed deceleration amount by a polygonal line pattern when the measured basis weight is smaller than the set basis weight value, and the speed decrement circuit and the speed decrement circuit. A production amount control device for a paper machine, comprising: a rate-of-change limiting circuit for limiting the output change of the circuit and inputting it to a speed controller.
【０００６】[0006]
【作用】本発明による抄紙機の生産量制御装置において
は、吐出されたパルプの搬送する速度を調整し、速度モ
ータの回転速度を検出し、速度検出器で検出した速度モ
ータの速度測定値と速度設定器で予め定めた速度設定値
とが一致するように速度モータを運転操作し、坪量検出
器で検出したパルプの測定坪量と坪量設定器で予め定め
た設定坪量値とが一致するようにパルプの吐出圧設定値
を決定し、吐出されるパルプの吐出圧力が坪量コントロ
ーラで設定された吐出圧設定値となるように紙料ポンプ
を運転制御し、吐出圧力コントローラからの操作量と予
め定めたポンプ有効上限回転数とを比較して操作余裕量
を算出し、操作余裕量から速度増量分を折線パターンで
求めて速度増量値とし、坪量検出器で検出した測定坪量
と予め定めた設定坪量値を比較して操作逸脱量を算出
し、測定坪量が設定坪量値より少ない場合に速度減速量
を折線パターンで求めて速度減量値とし、速度減量回路
および速度増量回路の出力変化を制限して速度コントロ
ーラに入力する。In the production control device for the paper machine according to the present invention, the speed at which the discharged pulp is conveyed is adjusted, the rotation speed of the speed motor is detected, and the speed measurement value of the speed motor detected by the speed detector is detected. The speed motor is operated so that the speed setting value set in advance by the speed setter matches, and the measured basis weight of pulp detected by the basis weight detector and the set basis weight value set in advance by the basis weight setter are The pulp discharge pressure set value is determined so that it matches, and the stock pump is operated and controlled so that the discharge pressure of the discharged pulp becomes the discharge pressure set value set by the basis weight controller. The operation margin is calculated by comparing the operation amount with the preset effective pump upper limit rotation speed, and the speed increment is calculated from the operation margin by the polygonal line pattern to obtain the speed increment value. Quantity and preset settings When the measured grammage is less than the set grammage value, the speed deceleration amount is calculated as a polygonal line pattern and used as the speed decrement value, and the output change of the speed decrement circuit and the speed increase circuit is calculated. Limit and enter into the speed controller.
【０００７】[0007]
【実施例】次に本発明の一実施例を説明する。図１にお
いて１ａは吐出されたパルプの搬送する速度を調整する
抄紙機用の速度モータ、２３は速度モータ１ａの回転速
度を検出する速度検出器、１は速度検出器２３で検出し
た速度モータ１ａの速度測定値と速度設定器で予め定め
た速度設定値とが一致するように速度モータ１ａを運転
操作する速度コントローラ、２は坪量検出器２２で検出
したパルプの測定坪量と坪量設定器で予め定めた設定坪
量値とが一致するようにパルプの吐出圧設定値を決定す
る坪量コントローラ、３は吐出されるパルプの吐出圧力
が坪量コントローラ２で設定された吐出圧設定値となる
ように紙料ポンプＰを運転制御する吐出圧力コントロー
ラ、８は吐出圧力コントローラ３からの操作量と予め定
めたポンプ有効上限回転数Ｐｓとを比較して操作余裕量
Ｆｏを算出する操作余裕量算出回路、８ａは操作余裕量
Ｆｏから速度増量分を折線パターンで求めて速度増量値
とする速度増量回路、７は坪量検出器２２で検出した測
定坪量と予め定めた設定坪量値とを比較して操作逸脱量
を算出する操作逸脱量算出回路、７ａは測定坪量が設定
坪量値より少ない場合に速度減速量を折線パターンで求
めて速度減量値とする速度減量回路、２４は速度減量回
路７ａおよび速度増量回路８ａの出力変化を制限して速
度コントローラ１に入力する変化率制限回路であり、吐
出された紙料（パルプ）を搬送プレスし、紙にする抄紙
機においてその吐出量と搬送スピードから最大限の生産
量を得ようとする装置で、紙料を吐出するポンプ（操作
端）に操作量の余裕がある場合、その余裕量に見合う搬
送スピードに自動的に切換え、又は搬送スピードが高速
化した時、紙の品質情報である坪量にてその値が規定値
の範囲を逸脱した時、その逸脱量に見合う搬送スピード
に自動的に切換え、品質の安定化を重視することを特徴
とする生産量自動制御装置である。EXAMPLE An example of the present invention will be described below. In FIG. 1, 1a is a speed motor for a paper machine that adjusts the speed at which discharged pulp is conveyed, 23 is a speed detector that detects the rotation speed of the speed motor 1a, and 1 is a speed motor 1a that is detected by the speed detector 23. Speed controller for driving and operating the speed motor 1a so that the speed measurement value of 1 and the speed setting value previously set by the speed setting device match, 2 is the measured basis weight and basis weight setting of the pulp detected by the basis weight detector 22 The grammage controller 3 determines the discharge pressure setting value of the pulp so that it matches the preset grammage value set by the container. The discharge pressure setting value of the discharge pressure of the discharged pulp is set by the grammage controller 2. And a discharge pressure controller 8 for controlling the operation of the stock pump P so that the operation margin amount Fo is calculated by comparing the operation amount from the discharge pressure controller 3 with a predetermined pump effective upper limit rotation speed Ps. An operation allowance amount calculation circuit, 8a is a speed increase circuit that obtains a speed increase amount from the operation allowance amount Fo in a polygonal line pattern to obtain a speed increase value, and 7 is a measured basis weight detected by the basis weight detector 22 and a preset setting. An operation deviation amount calculation circuit for calculating an operation deviation amount by comparing with a grammage value, and 7a is a speed reduction amount for obtaining a speed deceleration value by calculating a speed deceleration amount with a polygonal line pattern when the measured grammage is smaller than a set grammage value. A circuit 24 is a rate-of-change limiting circuit for limiting the output changes of the speed reducing circuit 7a and the speed increasing circuit 8a and inputting them to the speed controller 1. The discharged paper material (pulp) is conveyed and pressed into paper. If the pump (operating end) that discharges the paper stock has a margin of operation amount, it is a device that tries to obtain the maximum production amount from the discharge amount and the conveyance speed of the machine. Switching , Or when the transport speed is increased and the value of the basis weight, which is the paper quality information, deviates from the specified range, the quality is stabilized by automatically switching to the transport speed that matches the deviation. It is an automatic production amount control device characterized by giving priority to it.
【０００８】即ち、本実施例は、速度検出器２３で検出
した速度測定値が速度設定器で予め決められた速度設定
値と同じ値になるように速度モータ１ａを操作する速度
コントローラ１と、坪量検出器２２で検出した測定坪量
が予め定めた設定坪量値と同じ値になるようにパルプ吐
出圧設定値を決定する坪量コントローラ２と、吐出圧コ
ントローラ３からの操作量によって制御されるポンプＰ
と、吐出圧コントローラ３からの操作量とポンプ有効上
限回転数Ｐｓを比較し、操作量余裕量を算出する操作量
余裕量算出回路８と、操作量余裕量から速度増量分を折
線パターンで求め速度増量値とする速度増量回路８ａ
と、測定坪量が設定坪量より少ない場合に速度減速量を
折線パターンで求め速度減量値とする速度減量回路７ａ
とを備える抄紙機の生産量自動制御装置を示し、紙にな
る量は吐出圧力コントローラ３の操作量に比例してお
り、吐出圧コントローラ３の操作量が小さいと通過する
紙量が少なく生産能力も低く、又吐出圧コントローラ３
の操作量が大きいと通過する紙量も多く生産能力も高く
なる。That is, in this embodiment, the speed controller 1 operates the speed motor 1a so that the speed measurement value detected by the speed detector 23 becomes the same value as the speed set value predetermined by the speed setter. Controlled by an operation amount from a grammage controller 2 that determines a pulp discharge pressure set value such that the measured grammage detected by the grammage detector 22 becomes the same value as a preset set grammage value, and an operation amount from the discharge pressure controller 3. Pump P
Then, the operation amount from the discharge pressure controller 3 is compared with the pump effective upper limit rotation speed Ps to calculate the operation amount allowance amount, and the speed increase amount is calculated from the operation amount allowance amount in a polygonal line pattern. Speed increasing circuit 8a for setting the speed increasing value
And, when the measured basis weight is smaller than the set basis weight, the speed deceleration amount is obtained as a speed decrement value by obtaining the speed deceleration amount in the polygonal line pattern and the speed deceleration circuit 7a.
1 shows an automatic production amount control device for a paper machine equipped with, and the amount of paper is proportional to the operation amount of the discharge pressure controller 3, and when the operation amount of the discharge pressure controller 3 is small, the amount of paper passing through is small and the production capacity Is also low, and the discharge pressure controller 3
If the operation amount of is large, the amount of paper passing through is large and the production capacity is high.
【０００９】そして、速度コントローラ１は速度測定値
が速度設定値と同じ値になる様に速度モータ１ａを操作
し、坪量コントローラ２は測定坪量値が設定坪量値と同
じ値になる様に吐出圧力コントローラ３の設定値を決定
し、吐出圧力コントローラ３は測定圧力が坪量コントロ
ーラ２で決定された設定圧力と同じ値になる様にポンプ
Ｐの回転数を操作する。Then, the speed controller 1 operates the speed motor 1a so that the speed measurement value becomes the same value as the speed setting value, and the basis weight controller 2 operates so that the measured basis weight value becomes the same value as the set basis weight value. Then, the set value of the discharge pressure controller 3 is determined, and the discharge pressure controller 3 operates the rotation speed of the pump P so that the measured pressure becomes the same value as the set pressure determined by the basis weight controller 2.
【００１０】次に速度コントローラ設定値を増速させる
ラインＢについては、吐出圧力コントローラ３の操作量
と操作端（ポンプ）有効上限回転数値Ｐｓを比較し操作
量余裕量を算出し、その余裕量から速度増量分を折線パ
ターンで求め速度増量値とする。Next, for the line B for increasing the speed controller set value, the operation amount of the discharge pressure controller 3 is compared with the operation end (pump) effective upper limit rotational speed value Ps to calculate the operation amount margin amount, and the margin amount is calculated. From this, the speed increase amount is obtained in a polygonal line pattern and used as the speed increase value.
【００１１】更に、速度コントローラ設定値を決定させ
るラインＡについては、測定坪量が設定坪量に対し一定
値以上少ない場合、その一定値（坪量制限値）を下まわ
る量に相当する速度減速量を析線パターンで求め速度減
速値としている。Further, with respect to the line A for determining the set value of the speed controller, when the measured basis weight is smaller than the set basis weight by a certain value or more, the speed deceleration corresponding to an amount below the certain value (basis weight limit value). The amount is calculated from the diffraction pattern and used as the speed deceleration value.
【００１２】速度設定値は通常、速度増量又は減量の状
態が発生しない限り変更はないが、いずれかが発生する
と速度設定値変更が自動的に行われる。この場合速度設
定値の変更動作は階段状に一気に行われるものでなく徐
々に増量分、減量分の値へ変更される。そして速度設定
値変更において増速要求と減速要求は同時に発生されな
い。The speed set value is normally not changed unless a speed increase or decrease condition occurs, but the speed set value is automatically changed when either of them occurs. In this case, the operation of changing the speed set value is not performed in a step-like fashion at once, but is gradually changed to a value corresponding to the increase or decrease. When the speed set value is changed, the speed increase request and the deceleration request are not generated at the same time.
【００１３】その理由として、速度減速要求が発生する
のは、坪量設定値に対し、測定坪量が下まわった時で、
この時坪量コントローラ２の操作出力は大きくなり、吐
出圧力コントローラ３の値もそれにあわせて増えて、か
つ吐出圧力コントローラ３の操作量が増加するためであ
る（パルプ吐出圧の操作量が増加すると操作端余裕度が
少なく速度の増速指令が出にくくなる。）。ただし、上
記処理の過疫期に同時に発生することが考えられるが、
この場合は品質優先とし減速指令が有効となる。The reason is that the speed deceleration request is generated when the measured basis weight is lower than the set basis weight,
At this time, the operation output of the basis weight controller 2 becomes large, the value of the discharge pressure controller 3 also increases accordingly, and the operation amount of the discharge pressure controller 3 also increases (when the operation amount of the pulp discharge pressure increases. There is little margin at the operating end, making it difficult to issue speed up commands.) However, it is possible that they will occur at the same time during the overdose period of the above treatment.
In this case, quality is prioritized and the deceleration command is valid.
【００１４】次に図２を用いて抄紙機自動運転機能につ
いて説明する。Next, the automatic operation function of the paper machine will be described with reference to FIG.
【００１５】図２は、自動運転速度パターンを表わす。FIG. 2 shows an automatic driving speed pattern.
【００１６】停止している抄紙機を自動的に運転する場
合、オペレータに決定してもらう項目は、最低生産量設
定値ＳＬ、加速度θｖ、及び坪量設定値の３点のみであ
る。When the stopped paper machine is automatically operated, the only items to be decided by the operator are the minimum production amount set value SL, the acceleration θv, and the basis weight set value.
【００１７】速度立上げ期間Ｌは、最低生産量設定値と
加速度を基に速度制御を中心に生産量制御を行う。この
期間は特に坪量制御による速度の減速指令を発生させ
ず、最低生産量設定値に到達させる。During the speed start-up period L, the production amount control is performed mainly on the speed control based on the minimum production amount set value and the acceleration. In this period, the minimum production amount set value is reached without generating a speed deceleration command due to the basis weight control.
【００１８】安定期間Ｍは、一定時間測定坪量が坪量設
定値になるのを待つ時間を表わす。一定時間坪量が安定
すると最適生産量制御へ自動的に切換わる。最適生産量
制御を開始すると本発明の機能が起動し、プロセスの最
大限の能力と品質（紙のパルプ含有率）から求められる
速度設定値による生産量制御を行う。The stable period M represents a time period for waiting for the measured basis weight to reach the basis weight set value for a certain period of time. When the basis weight is stable for a certain period of time, the control automatically switches to the optimum production amount control. When the optimum production amount control is started, the function of the present invention is activated, and the production amount control is performed by the speed set value obtained from the maximum capacity and quality of the process (paper pulp content rate).
【００１９】従来の構成の場合、生産量を変更する場
合、操作員の介入が不可欠である。それに対し本実施例
では操作員の介入なしで生産量の変更が行え、又その変
更の要素に紙の品質である坪量を含めているので、単に
生産量を変更するだけでなく品質管理された生産量制御
システムと言える。このように、ライン速度が一定状態
においては紙となるパルプのパルプ供給量（パルプ吐出
圧）は一定状態に保たれる。この時パルプ供給側に余裕
が有る場合、その量にみあう速度コントローラの速度設
定値を増加させる。In the case of the conventional configuration, when the production amount is changed, the intervention of the operator is indispensable. On the other hand, in the present embodiment, the production amount can be changed without the intervention of the operator, and the basis weight, which is the quality of the paper, is included as an element of the change, so that the quality control is performed not only by changing the production amount. It can be said that it is a production control system. In this way, the pulp supply amount (pulp discharge pressure) of the pulp to be paper is kept constant when the line speed is constant. At this time, if there is a margin on the pulp supply side, the speed setting value of the speed controller corresponding to the amount is increased.
【００２０】又、紙の品質に関わる紙のパルプ含有量
（坪量）を測定し、測定坪量が設定坪量に対し、一定値
以上下まわっている場合、つまり紙が目標とするパルプ
量より少ない時は、ライン速度が早いため吐出されるパ
ルプが薄く解散されていることを意味するので速度コン
トローラの速度設定値を減速させる。Further, the pulp content (basis weight) of the paper, which is related to the quality of the paper, is measured, and when the measured basis weight is lower than the set basis weight by a certain value or more, that is, the target pulp content of the paper. When it is less, it means that the discharged pulp is thinly dispersed because the line speed is high, and therefore the speed setting value of the speed controller is decelerated.
【００２１】この様に、パルプ吐出圧コントローラの操
作量と坪量測定値により生産量の設定値を自動的に決定
する。As described above, the set value of the production amount is automatically determined by the operation amount of the pulp discharge pressure controller and the measured value of the basis weight.
【００２２】[0022]
【発明の効果】本発明により、吐出圧力コントローラの
操作余裕量と紙の坪量の２要素により生産量に直接に影
響する速度コントローラの速度設定値を自動的に決定す
るので、操作員の介入は不要となり、紙の品質情報であ
る紙の坪量が速度設定値決定に含まれるので品質が管理
されたものとなる。As described above, according to the present invention, the speed set value of the speed controller, which directly affects the production amount, is automatically determined by the two factors of the operation allowance of the discharge pressure controller and the basis weight of the paper. Is unnecessary, and the basis weight of the paper, which is the paper quality information, is included in the speed setting value determination, so that the quality is managed.
【図１】本発明の一実施例を示す生産量制御装置の構成
図である。FIG. 1 is a configuration diagram of a production control device showing an embodiment of the present invention.
【図２】図１の作用効果を示す説明図である。FIG. 2 is an explanatory diagram showing an operation effect of FIG.
１ 速度コントローラ ２ 坪量コントローラ ３ 吐出圧力コントローラ ７ 操作逸脱量算出回路 ８ 操作余裕量算出回路 1 speed controller 2 basis weight controller 3 discharge pressure controller 7 operation deviation amount calculation circuit 8 operation allowance amount calculation circuit
Claims (1)
する抄紙機用の速度モータと、この速度モータの回転速
度を検出する速度検出器と、この速度検出器で検出した
前記速度モータの速度測定値と速度設定器で予め定めた
速度設定値とが一致するように前記速度モータを運転操
作する速度コントローラと、坪量検出器で検出した前記
パルプの測定坪量と坪量設定器で予め定めた設定坪量値
とが一致するように前記パルプの吐出圧設定値を決定す
る坪量コントローラと、吐出される前記パルプの吐出圧
力が前記坪量コントローラで設定された前記吐出圧設定
値となるように紙料ポンプを運転制御する吐出圧力コン
トローラと、この吐出圧力コントローラからの操作量と
予め定めたポンプ有効上限回転数とを比較して操作余裕
量を算出する操作余裕量算出回路と、前記操作余裕量か
ら速度増量分を折線パターンで求めて速度増量値とする
速度増量回路と、坪量検出器で検出した前記測定坪量と
予め定めた前記設定坪量値を比較して操作逸脱量を算出
する操作逸脱量算出回路と、前記測定坪量が前記設定坪
量値より少ない場合に速度減速量を前記折線パターンで
求めて速度減量値とする速度減量回路と、この速度減量
回路および前記速度増量回路の出力変化を制限して前記
速度コントローラに入力する変化率制限回路とを具備し
てなる抄紙機の生産量制御装置。1. A speed motor for a paper machine that adjusts a speed at which discharged pulp is conveyed, a speed detector that detects a rotation speed of the speed motor, and a speed of the speed motor detected by the speed detector. A speed controller that drives and operates the speed motor so that the measured value and the speed set value that is predetermined by the speed setter match, and the measured basis weight of the pulp detected by the basis weight detector and the basis setter in advance. A basis weight controller that determines the discharge pressure setting value of the pulp so that the determined set basis weight value matches, and the discharge pressure setting value that the discharge pressure of the pulp to be discharged is set by the basis weight controller. The discharge pressure controller that controls the operation of the stock pump so that the operation margin from this discharge pressure controller is compared with a predetermined effective pump upper limit rotation speed. An allowance calculation circuit, a speed increase circuit that obtains a speed increase amount from the operation allowance amount in a polygonal line pattern as a speed increase value, a measured basis weight detected by a basis weight detector, and the preset set basis weight value. And an operation deviation amount calculation circuit for calculating an operation deviation amount by comparing, and a speed reduction circuit for obtaining a speed deceleration value by obtaining the speed deceleration amount from the polygonal line pattern when the measured basis weight is smaller than the set basis weight value. A production amount control apparatus for a paper machine, comprising: a speed change circuit and a change rate limiting circuit for limiting an output change of the speed increasing circuit and inputting to the speed controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13734392A JP2965792B2 (en) | 1992-05-29 | 1992-05-29 | Paper machine production control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13734392A JP2965792B2 (en) | 1992-05-29 | 1992-05-29 | Paper machine production control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05331791A true JPH05331791A (en) | 1993-12-14 |
| JP2965792B2 JP2965792B2 (en) | 1999-10-18 |
Family
ID=15196428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13734392A Expired - Lifetime JP2965792B2 (en) | 1992-05-29 | 1992-05-29 | Paper machine production control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2965792B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012144826A (en) * | 2011-01-14 | 2012-08-02 | Seiko Epson Corp | Paper recycling apparatus and paper recycling method |
| JP2015127148A (en) * | 2015-03-25 | 2015-07-09 | セイコーエプソン株式会社 | Paper recycling apparatus and paper recycling method |
| US9522446B2 (en) | 2014-08-27 | 2016-12-20 | Cheung Woh Technologies Ltd. | Method and apparatus for forming a hard disk drive base plate with an extended height |
-
1992
- 1992-05-29 JP JP13734392A patent/JP2965792B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012144826A (en) * | 2011-01-14 | 2012-08-02 | Seiko Epson Corp | Paper recycling apparatus and paper recycling method |
| US9522446B2 (en) | 2014-08-27 | 2016-12-20 | Cheung Woh Technologies Ltd. | Method and apparatus for forming a hard disk drive base plate with an extended height |
| JP2015127148A (en) * | 2015-03-25 | 2015-07-09 | セイコーエプソン株式会社 | Paper recycling apparatus and paper recycling method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2965792B2 (en) | 1999-10-18 |
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