CN102527741A - Method for controlling extension rate of skin-pass and coil dividing line - Google Patents
Method for controlling extension rate of skin-pass and coil dividing line Download PDFInfo
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- CN102527741A CN102527741A CN2010106157249A CN201010615724A CN102527741A CN 102527741 A CN102527741 A CN 102527741A CN 2010106157249 A CN2010106157249 A CN 2010106157249A CN 201010615724 A CN201010615724 A CN 201010615724A CN 102527741 A CN102527741 A CN 102527741A
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Abstract
The invention relates to a method for controlling the extension rate of a skin-pass and coil dividing line. The method is characterized by comprising the following steps of: controlling tension, speeds, rolling force and roller bending force by a method for arranging a feedforward additional control device when a rolling line starts to operate, and calculating output of the feedforward additional control device according to feedback information of a system so as to improve response time of the system; and automatically removing the feedforward additional control device after a rolling line system stably operates. The feedforward additional control device has given output through an extension rate controller, and the extension rate controller receives an extension rate given signal of a SIMATIC TDC controller, acquires an encoder conversion signal output from an encoder measuring and calculating system, realizes closed loop control output and is adaptively controlled. Compared with the prior art, the invention has the advantages that: the control response time of the extension rate of the skin-pass and coil dividing line can be greatly shortened, the control accuracy of the extension rate and the quality of a product are improved, the yield of the product is improved, the working strength of an operator is reduced, the skin-pass and coil dividing rolling speed is improved, and the production efficiency is improved.
Description
Technical field
The present invention relates to metallurgical automation control system, smooth minute spiral elongation controlling means of particularly a kind of hot-strip.
Background technology
Along with expanding economy, market is stricter to the requirement of broad hot strip product quality, and value-added content of product is higher; The hot rolling broadband thick like 1.2～6.35mm needs smooth delivery, and it is rouleau delivery that the hot rolling broadband that 1.2～12.7mm is thick needs the fixed length cutting.In recent years, domestic hot-strip factory all establishes smooth minute spiral, but its build and maintenance cost higher; Smooth minute spiral elongation control response time is longer, therefore, shortens lag time; Improve elongation control precision and product percent of pass, reduce operator's working strength, accelerate smooth bundling mill speed; Enhancing productivity, is present urgent problem.
Summary of the invention
The purpose of this invention is to provide a kind of smooth minute spiral elongation controlling means, can shorten smooth minute spiral elongation control response time greatly, improve elongation control precision and product quality.
For realizing above-mentioned purpose, the present invention realizes through following technical scheme:
Smooth minute spiral elongation controlling means; When roll line brings into operation; Adopt the method that increases the additional control device of feedforward for the control of tension force, speed, roll-force and bending roller force, calculate the output of the additional control device of feedforward, the response time of improving system based on the feedback information of system; Automatically the excision feedforward adds control device behind the roll line system stable operation.
The additional control device of described feedforward is through the given output of elongation control device; The elongation control device receives the given signal of percentage elongation of SIMATIC TDC controller; And the capturing and coding device is measured the coder transitions signal of computing system output, realization closed-loop control output;
The revolution signal of described inlet rectification roll encoder and outlet rectification roll encoder collection inlet rectification roll and outlet rectification roll is measured computing system through encoder encoder revolution signal transition is become the linear velocity signal;
Described linear velocity signal input adapts to the control recognition system, receives this signal by adapting to the control recognition system, and this signal is compared with the percentage elongation evaluation from the elongation control device, carries out Self Adaptive Control; Through the additional control device of the given output valve of elongation control device to feedforward.
Compared with prior art, the invention has the beneficial effects as follows:
Can shorten smooth minute spiral elongation control response time greatly, improve elongation control precision and product quality, improve product percent of pass, reduce operator's working strength, accelerate smooth bundling mill speed, enhance productivity.
Description of drawings
Fig. 1 is the control block diagram of smooth minute spiral elongation controlling means.
The specific embodiment
See Fig. 1; Smooth minute spiral elongation controlling means; When roll line brings into operation; Adopt the method that increases the additional control device of feedforward for the control of tension force, speed, roll-force and bending roller force, calculate the output of the additional control device of feedforward, the response time of improving system according to the feedback information of system; Automatically the excision feedforward adds control device behind the roll line system stable operation; Output signal to uncoiler tension regulator, reel tension regulator, planisher speed regulator, hydraulic pressure roll-force adjuster, hydraulic bending roll draught control mechanism respectively by SIMATIC TDC controller, carry out uncoiler, coiling machine given tension, the planisher principal velocity is given and roll-force, bending roller force are given.
The additional control device of described feedforward comprises the additional control device of tension force feedforward, the additional control device of velocity feed forward, the additional control device of roll-force feedforward, the additional control device of bending roller force feedforward, outputs control signals to uncoiler tension regulator and reel tension regulator, planisher speed regulator, hydraulic pressure roll-force adjuster, hydraulic bending roll draught control mechanism respectively.The additional control device of said feedforward is through the given output of elongation control device.Uncoiler tension regulator and uncoiling synchronous motor control converter plant constitutes closed loop controlling structure, reel tension regulator with batch synchronous motor control converter plant and constitute closed loop controlling structure; Planisher speed regulator, smooth synchronous motor control converter plant, smooth motor encoder constitute closed loop controlling structure; Hydraulic pressure roll-force adjuster, hydraulic bending roll draught control mechanism constitute closed loop controlling structure with the hydraulic cylinder actuating unit respectively.
The additional control device of described feedforward is through the given output of elongation control device; The elongation control device receives the given signal of percentage elongation of SIMATIC TDC controller; And the capturing and coding device is measured the coder transitions signal of computing system output, realization closed-loop control output; The revolution signal of described inlet rectification roll encoder and outlet rectification roll encoder collection inlet rectification roll and outlet rectification roll is measured computing system through encoder encoder revolution signal transition is become the linear velocity signal; Described linear velocity signal input adapts to the control recognition system, receives this signal by adapting to the control recognition system, and this signal is compared with the percentage elongation evaluation from the elongation control device, carries out Self Adaptive Control; Through the additional control device of the given output valve of elongation control device to feedforward.
See Fig. 1, spiral elongation control process was in smooth minute: coil of strip passes to primary PLC through the crane navigation system with the grade III steel volume information, provides the required rolling parameter of smooth coil of strip through primary PLC internal system pass schedule model system; After operating personnel confirm, set up front and back tension force, confirm the roll line speed of service according to rolling parameter; Feedback lags behind when bringing into operation, and tension force, speed, roll-force and bending roller force control adopt additional feedforward control device to improve system response time, calculate the output of the additional control device of feedforward according to feedback information; The control response trace performance significantly promotes; Behind system stability, excise feedforward control device automatically, reduce the system disturbance amount, the elongation control device carries out Self Adaptive Control; And the result of identification control output calculates the result with the percentage elongation that inlet rectification roll and outlet rectification roll encoder are measured and compares; Calculate output control through the elongation control device, existing production has reached the design technology requirement, and the elongation control precision significantly improves.
Claims (2)
1. smooth minute spiral elongation controlling means; It is characterized in that; When roll line brings into operation; Adopt the method that increases the additional control device of feedforward for the control of tension force, speed, roll-force and bending roller force, calculate the output of the additional control device of feedforward, the response time of improving system based on the feedback information of system; Automatically the excision feedforward adds control device behind the roll line system stable operation.
2. smooth minute according to claim 1 spiral elongation controlling means; It is characterized in that; The additional control device of described feedforward is through the given output of elongation control device; The elongation control device receives the given signal of percentage elongation of SIMATIC TDC controller, and the capturing and coding device is measured the coder transitions signal of computing system output, realization closed-loop control output;
The revolution signal of described inlet rectification roll encoder and outlet rectification roll encoder collection inlet rectification roll and outlet rectification roll is measured computing system through encoder encoder revolution signal transition is become the linear velocity signal;
Described linear velocity signal input adapts to the control recognition system, receives this signal by adapting to the control recognition system, and this signal is compared with the percentage elongation evaluation from the elongation control device, carries out Self Adaptive Control; Through the additional control device of the given output valve of elongation control device to feedforward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106157249A CN102527741A (en) | 2010-12-30 | 2010-12-30 | Method for controlling extension rate of skin-pass and coil dividing line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106157249A CN102527741A (en) | 2010-12-30 | 2010-12-30 | Method for controlling extension rate of skin-pass and coil dividing line |
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| Publication Number | Publication Date |
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| CN102527741A true CN102527741A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010106157249A Pending CN102527741A (en) | 2010-12-30 | 2010-12-30 | Method for controlling extension rate of skin-pass and coil dividing line |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0569019A (en) * | 1991-09-11 | 1993-03-23 | Hitachi Ltd | Method and device for controlling elongation percentage |
| CN1840255A (en) * | 2005-03-28 | 2006-10-04 | 宝山钢铁股份有限公司 | Extension coefficient and plate shape integrated control method in steel strip flattening process |
| CN1923391A (en) * | 2005-08-30 | 2007-03-07 | 宝山钢铁股份有限公司 | Integrate optimized controlling means for planisher elongation roll-force, tension, and roll-bending force |
-
2010
- 2010-12-30 CN CN2010106157249A patent/CN102527741A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0569019A (en) * | 1991-09-11 | 1993-03-23 | Hitachi Ltd | Method and device for controlling elongation percentage |
| CN1840255A (en) * | 2005-03-28 | 2006-10-04 | 宝山钢铁股份有限公司 | Extension coefficient and plate shape integrated control method in steel strip flattening process |
| CN1923391A (en) * | 2005-08-30 | 2007-03-07 | 宝山钢铁股份有限公司 | Integrate optimized controlling means for planisher elongation roll-force, tension, and roll-bending force |
Non-Patent Citations (2)
| Title |
|---|
| 王耀: "平整机组中的带钢延伸率测量及控制原理", 《四川冶金》 * |
| 秦大伟等: "鞍钢1500mm冷轧平整机组延伸率控制技术", 《鞍钢技术》 * |
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Application publication date: 20120704 |