TWI552816B - Active liquid level control system and control method thereof - Google Patents
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- TWI552816B TWI552816B TW103117161A TW103117161A TWI552816B TW I552816 B TWI552816 B TW I552816B TW 103117161 A TW103117161 A TW 103117161A TW 103117161 A TW103117161 A TW 103117161A TW I552816 B TWI552816 B TW I552816B
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- 239000007788 liquid Substances 0.000 title claims description 99
- 238000000034 method Methods 0.000 title claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 97
- 239000010959 steel Substances 0.000 claims description 97
- 238000009749 continuous casting Methods 0.000 claims description 30
- 239000011819 refractory material Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 9
- 238000005266 casting Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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Description
本發明係有關於一種液位控制系統及其控制方法，且特別是一種應用於鋼帶生產製程之主動式液位控制系統及其控制方法。 The invention relates to a liquid level control system and a control method thereof, and in particular to an active liquid level control system applied to a steel strip production process and a control method thereof.
在煉鋼的生產製程中，為了提升生產效率，通常會以連續鑄造方式來生產鋼帶。請參照第1圖，第1圖係鋼帶連續鑄造機100之示意圖。在鋼帶連續鑄造機100中，靜置爐110和坩鍋120係用以盛裝鋼液LS，並分別藉由控制桿130和塞桿150的控制使鋼液LS經由流鋼嘴140和鑄嘴160流出至下一階段。詳細而言，可藉由調整控制桿130的開閉狀態和開度等來控制鋼液LS自靜置爐110經由流鋼嘴140流入至坩鍋120的量，且可藉由調整塞桿150的開閉狀態來控制鋼液LS自坩鍋120經由鑄嘴160流出的量。經由鑄嘴160流出的鋼液LS再經過澆鑄形成鋼帶。靜置爐110、坩鍋120、控制桿130、流鋼嘴140、塞桿150和鑄嘴160為耐火材質，以承受鋼液LS的高溫。 In the steelmaking production process, in order to improve production efficiency, steel strips are usually produced in a continuous casting manner. Please refer to FIG. 1 , which is a schematic view of a steel strip continuous casting machine 100 . In the steel strip continuous casting machine 100, the static furnace 110 and the crucible 120 are used to hold the molten steel LS, and the molten steel LS is passed through the flow nozzle 140 and the casting nozzle by the control of the control rod 130 and the plug rod 150, respectively. 160 flows out to the next stage. Specifically, the amount of the molten steel LS flowing into the crucible 120 from the stationary furnace 110 via the flow nozzle 140 can be controlled by adjusting the opening and closing state and the opening degree of the control rod 130, and can be adjusted by adjusting the stopper rod 150. The opening and closing state controls the amount of the molten steel LS flowing out of the crucible 120 through the casting nozzle 160. The molten steel LS flowing out through the casting nozzle 160 is further cast to form a steel strip. The static furnace 110, the crucible 120, the control rod 130, the flow nozzle 140, the plug rod 150 and the casting nozzle 160 are made of refractory material to withstand the high temperature of the molten steel LS.
經由鋼帶連續鑄造機100所產生鋼帶的厚度與坩鍋120內的模液位高度有關。因此，可藉由調整坩鍋120 內的模液位高度來對應調整鋼帶的厚度。習知技術在調整模液位高度係藉由量測鋼帶厚度，回饋控制調整控制桿130和塞桿150的開閉狀態和開度來進行補償。然而，習知技術需控制流鋼嘴140的流量，會有補償較慢的情形。另一方面，若在鋼帶連續鑄造機100中有發生鋼液阻塞現象，或是自靜置爐110流入至坩鍋120的鋼液LS的量過大時，習知技術無法立即補償過高的模液位，可能造成缺陷的產生，導致鋼帶的品質受到影響。 The thickness of the steel strip produced by the continuous casting machine 100 of the steel strip is related to the height of the mold liquid level in the crucible 120. Therefore, the crucible 120 can be adjusted by The height of the mold liquid level in the interior corresponds to the thickness of the steel strip. The conventional technique compensates by adjusting the thickness of the steel strip by adjusting the thickness of the steel strip, and feeding back the opening and closing state and opening degree of the control lever 130 and the plug stem 150. However, the prior art requires control of the flow rate of the flow nozzle 140, which may result in a slower compensation. On the other hand, if the steel liquid clogging phenomenon occurs in the steel strip continuous casting machine 100, or the amount of the molten steel LS flowing from the static furnace 110 to the crucible 120 is too large, the conventional technique cannot immediately compensate for the excessively high The mold liquid level may cause defects and the quality of the steel strip is affected.
本發明的目的是在提供一種主動式液位控制系統及其控制方法，可即時調整模液位高度值，補償模液位高度值的變化量，且在補償步驟完成後，可使模液位高度值維持在定值。 The object of the present invention is to provide an active liquid level control system and a control method thereof, which can instantly adjust the mold liquid level height value, compensate the change amount of the mold liquid level height value, and can make the mold liquid level after the compensation step is completed. The height value is maintained at a fixed value.
依據本發明的上述目的，提出一種主動式液位控制系統。此主動式液位控制系統適用於鋼帶連續鑄造機中，且其包含主動桿、控制單元和驅動單元。主動桿用以動態調整鋼帶連續鑄造機中坩鍋內鋼液的模液位高度值。控制單元根據目標高度值和模液位高度值產生控制訊號。驅動單元根據控制訊號調整主動桿浸入鋼液內的體積。 In accordance with the above objects of the present invention, an active liquid level control system is proposed. This active level control system is suitable for use in steel strip continuous casting machines and includes an active rod, control unit and drive unit. The active rod is used to dynamically adjust the mold liquid level height of the molten steel in the crucible in the continuous casting machine of the steel strip. The control unit generates a control signal based on the target height value and the mold liquid level value. The driving unit adjusts the volume of the active rod immersed in the molten steel according to the control signal.
依據本發明的一實施例，於目標高度值高於模液位高度值時，控制單元控制驅動單元使主動桿浸入鋼液內的體積增加，且於目標高度值低於模液位高度值時，控制單元控制驅動單元使主動桿浸入鋼液內的體積減少。 According to an embodiment of the invention, when the target height value is higher than the mold liquid level height value, the control unit controls the driving unit to increase the volume of the active rod immersed in the molten steel, and when the target height value is lower than the mold liquid level height value The control unit controls the drive unit to reduce the volume of the active rod immersed in the molten steel.
依據本發明的又一實施例，主動式液位控制系統包 含厚度感測器，用以量測經由鋼帶連續鑄造機所產生鋼帶厚度值，且控制單元根據目標高度值、模液位高度值和鋼帶厚度值產生控制訊號。 According to yet another embodiment of the present invention, an active liquid level control system package The thickness sensor is used to measure the thickness of the steel strip produced by the continuous casting machine of the steel strip, and the control unit generates the control signal according to the target height value, the mold liquid level value and the steel strip thickness value.
依據本發明的又一實施例，上述主動桿包含耐火材料。 According to a further embodiment of the invention, the active rod comprises a refractory material.
依據本發明的又一實施例，上述驅動單元為線性單元。 According to still another embodiment of the present invention, the driving unit is a linear unit.
依據本發明的又一實施例，更包含液位偵測器，用以偵測鋼液而得到模液位高度值。 According to still another embodiment of the present invention, a liquid level detector is further included for detecting molten steel to obtain a mold liquid level height value.
依據本發明的上述目的，另提出一種主動式液位控制方法。此主動式液位控制方法適用於鋼帶連續鑄造機中，且包含下列步驟：量測鋼帶連續鑄造機中坩鍋內鋼液高度值；根據目標高度值和模液位高度值產生控制訊號；以及根據控制訊號調整主動桿浸入鋼液內的體積，以動態調整模液位高度值。 According to the above object of the present invention, an active liquid level control method is also proposed. The active liquid level control method is applicable to a steel strip continuous casting machine, and comprises the following steps: measuring the molten steel height value in the crucible in the continuous casting machine of the steel strip; generating a control signal according to the target height value and the mold liquid level height value And adjusting the volume of the active rod immersed in the molten steel according to the control signal to dynamically adjust the mold liquid level height value.
依據本發明的一實施例，於目標高度值高於模液位高度值時，控制訊號控制主動桿，使主動桿浸入鋼液內的體積增加，且於目標高度值低於模液位高度值時，控制訊號控制主動桿，使主動桿浸入鋼液內的體積減少。 According to an embodiment of the invention, when the target height value is higher than the mold liquid level height value, the control signal controls the active rod, so that the volume of the active rod immersed in the molten steel increases, and the target height value is lower than the mold liquid level height value. When the control signal controls the active lever, the volume of the active rod immersed in the molten steel is reduced.
依據本發明的又一實施例，更包含感測經由鋼帶連續鑄造機所產生鋼帶厚度值，以根據目標高度值、模液位高度值和鋼帶厚度值產生控制訊號。 According to still another embodiment of the present invention, the method further includes sensing a thickness of the steel strip produced by the continuous casting machine of the steel strip to generate a control signal according to the target height value, the mold liquid level value, and the steel strip thickness value.
依據本發明的又一實施例，更包含在鋼帶連續鑄造機的控制桿開啟流量時同時控制主動桿，以預先調整模液 位高度值。 According to still another embodiment of the present invention, the control rod is simultaneously controlled to open the flow rate of the steel strip continuous casting machine to simultaneously control the active rod to pre-adjust the molding liquid. Bit height value.
依據本發明的主動式液位控制系統和控制方法，可即時調整坩鍋內鋼液的模液位高度值，使模液位高度值維持在定值，進而降低產出鋼帶的厚度變異，以確保鋼帶的品質。 According to the active liquid level control system and the control method of the invention, the mold liquid level height value of the molten steel in the crucible can be adjusted instantly, so that the mold liquid level height value is maintained at a fixed value, thereby reducing the thickness variation of the produced steel strip. To ensure the quality of the steel strip.
100‧‧‧鋼帶連續鑄造機 100‧‧‧Steel Belt Continuous Casting Machine
110‧‧‧靜置爐 110‧‧‧Standing furnace
120‧‧‧坩鍋 120‧‧‧ Shabu-shabu
130‧‧‧控制桿 130‧‧‧Control lever
140‧‧‧流鋼嘴 140‧‧‧ flow steel mouth
150‧‧‧塞桿 150‧‧‧ plug
160‧‧‧鑄嘴 160‧‧‧ casting nozzle
200‧‧‧主動式液位控制系統 200‧‧‧Active liquid level control system
210‧‧‧厚度感測器 210‧‧‧thickness sensor
220‧‧‧液位偵測器 220‧‧‧Level detector
230‧‧‧控制單元 230‧‧‧Control unit
240‧‧‧驅動單元 240‧‧‧ drive unit
250‧‧‧主動桿 250‧‧‧Active rod
300‧‧‧主動式液位控制方法 300‧‧‧Active liquid level control method
310、320、330、340、350‧‧‧步驟 310, 320, 330, 340, 350 ‧ ‧ steps
CS‧‧‧控制訊號 CS‧‧‧Control signal
DH‧‧‧目標高度值 DH‧‧‧target height value
H‧‧‧模液位高度值 H‧‧‧ mold level height value
LS‧‧‧鋼液 LS‧‧‧Steel
T‧‧‧鋼帶厚度值 T‧‧‧ steel strip thickness value
為讓本發明之上述和其他目的、特徵、優點與實施例能更明顯易懂，所附圖式之說明如下：第1圖係繪示鋼帶連續鑄造機之架構示意圖；第2A圖係繪示本發明實施例主動式液位控制系統之方塊示意圖；第2B圖係繪示第2A圖之主動桿浸入第1圖之坩鍋中鋼液內之示意圖；第3圖係繪示本發明實施例主動式液位控制方法之流程示意圖；第4圖係繪示依據習知技術之坩鍋內模液位高度值與時間之關係示意圖；以及第5圖係繪示依據本發明實施例之坩鍋內模液位高度值與時間之關係示意圖。 The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. The description of the drawings is as follows: FIG. 1 is a schematic diagram showing the structure of a steel strip continuous casting machine; FIG. 2B is a schematic diagram showing the active liquid level control system of the embodiment of the present invention; FIG. 2B is a schematic view showing the active rod of FIG. 2A immersed in the molten steel in the crucible of FIG. 1; FIG. 3 is a schematic diagram showing the implementation of the present invention. FIG. 4 is a schematic diagram showing the relationship between the liquid level value of the internal mold of the crucible according to the prior art and time; and FIG. 5 is a diagram showing the relationship according to the embodiment of the present invention. The relationship between the liquid level value of the mold and the time in the pot.
以下仔細討論本發明的實施例。然而，可以理解的是，實施例提供許多可應用的發明概念，其可實施於各式各樣的特定內容中。所討論之特定實施例僅供說明，並非用以限定本發明之範圍。 Embodiments of the invention are discussed in detail below. However, it will be appreciated that the embodiments provide many applicable inventive concepts that can be implemented in a wide variety of specific content. The specific embodiments discussed are illustrative only and are not intended to limit the scope of the invention.
請參照第2A圖，第2A圖係繪示本發明實施例主動式液位控制系統200之方塊示意圖。主動式液位控制系統200可使用於例如第1圖所繪示的鋼帶連續鑄造機100或是其他類似鋼帶連續鑄造機中，其係用以動態調整鋼液在坩鍋內的模液位高度值。在以下有關本發明實施例的說明中，係以使用於鋼帶連續鑄造機100為例。 Please refer to FIG. 2A. FIG. 2A is a block diagram showing an active liquid level control system 200 according to an embodiment of the present invention. The active liquid level control system 200 can be used, for example, in a steel strip continuous casting machine 100 as shown in FIG. 1 or in other similar steel belt continuous casting machines, which is used to dynamically adjust the molten liquid of the molten steel in the crucible. Bit height value. In the following description of the embodiments of the present invention, the steel strip continuous casting machine 100 is exemplified.
如第2A圖所示，主動式液位控制系統200包含厚度感測器210、液位偵測器220、控制單元230、驅動單元240和主動桿250。厚度感測器210係用以感測經由鋼帶連續鑄造機100所形成的鋼帶厚度值T。在一些實施例中，厚度感測器210可以是超音波測距儀、電磁波測距儀或雷射測距儀等，但不限於此。液位偵測器220係用以偵測坩鍋120內鋼液LS的模液位高度值H。在一些實施例中，液位偵測器220可以是超音波液位計或雷達液位計等，但不限於此。 As shown in FIG. 2A, the active liquid level control system 200 includes a thickness sensor 210, a liquid level detector 220, a control unit 230, a drive unit 240, and an active rod 250. The thickness sensor 210 is used to sense the steel strip thickness value T formed by the steel strip continuous casting machine 100. In some embodiments, the thickness sensor 210 may be an ultrasonic range finder, an electromagnetic range finder, or a laser range finder, but is not limited thereto. The liquid level detector 220 is used to detect the mold liquid level height value H of the molten steel LS in the crucible 120. In some embodiments, the liquid level detector 220 may be an ultrasonic level gauge or a radar level gauge or the like, but is not limited thereto.
控制單元230根據鋼帶厚度值T、目標高度值DH和模液位高度值H產生控制訊號CS。在一些實施例中，控制單元230可僅根據目標高度值DH和模液位高度值H產生控制訊號CS，且主動式液位控制系統200可不具有厚度感測器210。驅動單元240根據控制單元230輸出的控制訊號CS來調整主動桿250浸入坩鍋120中鋼液LS內的體積(如第2B圖所示)，以調整鋼液LS在坩鍋120內的模液位高度值H，進而調整鋼帶厚度值T。 The control unit 230 generates the control signal CS based on the steel strip thickness value T, the target height value DH, and the mold liquid level height value H. In some embodiments, the control unit 230 may generate the control signal CS only based on the target height value DH and the mold liquid level height value H, and the active liquid level control system 200 may not have the thickness sensor 210. The driving unit 240 adjusts the volume of the active rod 250 immersed in the molten steel LS in the crucible 120 according to the control signal CS outputted by the control unit 230 (as shown in FIG. 2B) to adjust the molding liquid of the molten steel LS in the crucible 120. The bit height value H, which in turn adjusts the strip thickness value T.
在一些實施例中，驅動單元240可以是線性馬達、 步進馬達或其他類似馬達，且主動桿250可以是圓柱體、方柱體或其他類似柱體。此外，主動桿250的截面積可依據各種製程需求做對應變更。主動桿250較佳包含耐火材質，以承受鋼液LS的高溫。形成主動桿250所選用的耐火材質可以是和靜置爐110、坩鍋120、控制桿130、流鋼嘴140、塞桿150和鑄嘴160相同的材質或是其他類似耐火材質。 In some embodiments, the drive unit 240 can be a linear motor, A stepper motor or other similar motor, and the active rod 250 can be a cylinder, a square cylinder or the like. In addition, the cross-sectional area of the active rod 250 can be changed according to various process requirements. The active rod 250 preferably comprises a refractory material to withstand the high temperatures of the molten steel LS. The refractory material used to form the active rod 250 may be the same material as the static furnace 110, the crucible 120, the control rod 130, the flow nozzle 140, the plug rod 150, and the nozzle 160, or other similar refractory materials.
請參照第3圖，第3圖係繪示本發明實施例主動式液位控制方法300之流程示意圖。主動式液位控制方法300係用於主動式液位控制系統200中，且包含下列步驟。首先，進行步驟310，使用液位偵測器220偵測鋼帶連續鑄造機100的坩鍋120內鋼液LS的模液位高度值H。接著，進行步驟320，使用控制單元230以根據目標高度值DH和模液位高度值H產生控制訊號CS。 Referring to FIG. 3, FIG. 3 is a schematic flow chart of an active liquid level control method 300 according to an embodiment of the present invention. The active level control method 300 is used in the active level control system 200 and includes the following steps. First, in step 310, the liquid level detector 220 is used to detect the mold liquid level height value H of the molten steel LS in the crucible 120 of the steel strip continuous casting machine 100. Next, step 320 is performed to use the control unit 230 to generate the control signal CS according to the target height value DH and the mold liquid level height value H.
然後，進行步驟330，比較目標高度值DH和模液位高度值H。若目標高度值DH高於模液位高度值H，則進行步驟340，使用控制訊號CS控制主動桿250，使主動桿250浸入坩鍋120中鋼液LS內的體積增加，以使模液位高度值H增加，進而增加鋼帶厚度值T。反之，若目標高度值DH低於模液位高度值H，則進行步驟350，使用控制訊號CS控制主動桿250，使主動桿250浸入坩鍋120中鋼液LS內的體積減少，以使模液位高度值H降低，進而減少鋼帶厚度值T。 Then, step 330 is performed to compare the target height value DH with the mold liquid level height value H. If the target height value DH is higher than the mold liquid level height value H, then step 340 is performed, and the active rod 250 is controlled by the control signal CS, so that the volume of the active rod 250 immersed in the molten steel LS in the crucible 120 is increased to make the mold liquid level The height value H increases, which in turn increases the steel strip thickness value T. On the other hand, if the target height value DH is lower than the mold liquid level height value H, then step 350 is performed to control the active rod 250 by using the control signal CS, so that the volume of the active rod 250 immersed in the molten steel LS in the crucible 120 is reduced to make the mold The liquid level height value H is lowered, thereby reducing the steel strip thickness value T.
在一些實施例中，在進行步驟320之前，可先使用 厚度感測器210感測經由鋼帶連續鑄造機100所形成的鋼帶厚度值T，且在步驟320中，可使用控制單元230以根據目標高度值DH、模液位高度值H和鋼帶厚度值T產生控制訊號CS。 In some embodiments, it may be used before proceeding to step 320. The thickness sensor 210 senses the steel strip thickness value T formed by the steel strip continuous casting machine 100, and in step 320, the control unit 230 can be used to be based on the target height value DH, the mold liquid level height value H, and the steel strip The thickness value T produces a control signal CS.
此外，在一些實施例中，可在鋼帶連續鑄造機100開始運作使得控制桿130開啟流量時，同時控制主動桿250，以預先調整模液位高度值H至一預設值。此預設值可依據鋼帶厚度的需求而調整。 In addition, in some embodiments, the active rod 250 may be simultaneously controlled to pre-adjust the mold level height value H to a predetermined value when the steel strip continuous casting machine 100 begins to operate such that the control rod 130 opens the flow. This preset value can be adjusted according to the thickness of the steel strip.
以下係針對使用習知技術和本發明實施例的鋼帶連續鑄造機來進行模擬比較。請參照第4、5圖，第4圖係繪示依據習知技術之坩鍋內模液位高度值與時間之關係示意圖，且第5圖係繪示依據本發明實施例之坩鍋內模液位高度值與時間之關係示意圖。由第4圖可知，雖然使用習知技術可調整過低或過高的模液位高度值，然而，模液位高度值和目標高度值的差距最大可達到大約6公分，模液位高度值的變化週期大約為1.8秒，且模液位高度值在每一變化週期中均未維持在定值。模液位高度值的變異過大，可能導致鋼帶品質降低或鋼帶特性改變。相較之下，由第5圖可知，依據本發明實施例，除了可調整過低或過高的模液位高度值之外，更可使模液位高度值和目標高度值的最大差距到大約4公分，且可將模液位高度值的變化週期縮短為大約0.7秒。此外，在每一變化週期中，模液位高度值增加至超越目標高度值後，透過本發明實施例，可立即將模液位高度值，且維持在定值。由上述可知，本發明可快 速補償模液位高度值的變化，且在補償步驟完成後，可使模液位高度值維持在定值，進而確保鋼帶的品質。 The following is a simulation comparison for a steel belt continuous casting machine using the prior art and the embodiment of the present invention. Please refer to FIG. 4 and FIG. 5 , FIG. 4 is a schematic diagram showing the relationship between the liquid level value of the internal mold of the crucible according to the prior art and the time, and FIG. 5 is a diagram showing the internal mold of the crucible according to the embodiment of the present invention. A schematic diagram of the relationship between the liquid level height value and time. It can be seen from Fig. 4 that although the mold level height value can be adjusted too low or too high by using the prior art, the difference between the mold liquid level height value and the target height value can be up to about 6 cm, and the mold liquid level height value. The period of change is approximately 1.8 seconds, and the mold level height value is not maintained at a constant value during each change period. The variation in the mold level height value is too large, which may result in a decrease in the quality of the steel strip or a change in the properties of the steel strip. In contrast, as can be seen from FIG. 5, according to the embodiment of the present invention, in addition to adjusting the mold level level value which is too low or too high, the maximum difference between the mold liquid level height value and the target height value can be It is about 4 cm and can shorten the period of change of the mold liquid level value to about 0.7 second. In addition, after each mode change period, after the mold liquid level height value is increased beyond the target height value, the mold liquid level height value can be immediately maintained and maintained at a constant value through the embodiment of the present invention. As can be seen from the above, the present invention can be fast The speed compensates for the change of the liquid level height value, and after the compensation step is completed, the mold liquid level height value can be maintained at a constant value, thereby ensuring the quality of the steel strip.
應注意的是，本發明的主動式液位控制系統除了可應用於鋼帶連續鑄造機之外，亦可應用於需進行液位控制的系統，或是增加於任何被動式液位控制系統中。 It should be noted that the active liquid level control system of the present invention can be applied to systems requiring liquid level control in addition to steel strip continuous casting machines, or to any passive level control system.
綜上所述，本發明的主動式液位控制系統及其控制方法可即時調整模液位高度值，以補償模液位高度值的變化，且在補償步驟完成後，可使模液位高度值維持在定值，進而降低產出鋼帶的厚度變異，確保鋼帶的品質。 In summary, the active liquid level control system and the control method thereof of the present invention can instantly adjust the mold liquid level height value to compensate for the change of the mold liquid level height value, and the mold liquid level height can be obtained after the compensation step is completed. The value is maintained at a fixed value, which in turn reduces the thickness variation of the produced steel strip and ensures the quality of the steel strip.
雖然本發明已以實施方式揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.
200‧‧‧主動式液位控制系統 200‧‧‧Active liquid level control system
210‧‧‧厚度感測器 210‧‧‧thickness sensor
220‧‧‧液位偵測器 220‧‧‧Level detector
230‧‧‧控制單元 230‧‧‧Control unit
240‧‧‧驅動單元 240‧‧‧ drive unit
250‧‧‧主動桿 250‧‧‧Active rod
CS‧‧‧控制訊號 CS‧‧‧Control signal
DH‧‧‧目標高度值 DH‧‧‧target height value
H‧‧‧模液位高度值 H‧‧‧ mold level height value
T‧‧‧鋼帶厚度值 T‧‧‧ steel strip thickness value
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| TW103117161A TWI552816B (en) | 2014-05-15 | 2014-05-15 | Active liquid level control system and control method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW425320B (en) * | 1999-02-05 | 2001-03-11 | Ishikawajima Harima Heavy Ind | Strip casting apparatus |
| TW201012570A (en) * | 2008-09-19 | 2010-04-01 | China Steel Corp | Liquid level control system for metal casting process and control method thereof |
| CN103611895A (en) * | 2013-11-25 | 2014-03-05 | 青岛云路新能源科技有限公司 | Strip spraying device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW425320B (en) * | 1999-02-05 | 2001-03-11 | Ishikawajima Harima Heavy Ind | Strip casting apparatus |
| TW201012570A (en) * | 2008-09-19 | 2010-04-01 | China Steel Corp | Liquid level control system for metal casting process and control method thereof |
| CN103611895A (en) * | 2013-11-25 | 2014-03-05 | 青岛云路新能源科技有限公司 | Strip spraying device |
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