CN105013836B - Without planisher rolling force control device and its method under elongation percentage detection state - Google Patents
Without planisher rolling force control device and its method under elongation percentage detection state Download PDFInfo
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Abstract
Without planisher rolling force control device and its method under elongation percentage detection state, belong to cold rolled strip steel production technical field.The present invention research planisher elongation control principle on the basis of, by optimization improve planisher roll-force control program, alleviate planisher low cruise, without elongation percentage detection state under, the problem because causing elongation percentage saltus step without rational rolling force setup value.Its core concept is the appropriate purpose for preserving and applying planisher roll-force actual setpoint, reach that planisher roll-force kick problem during parking is played further is alleviated in optimization roll-force optimal control；And arranged by mass data analysis optimization control program inner parameter, and increase human-machine interface function newly to improve its control.The advantage of the method is：Operative employee is selected by shirtsleeve operation, you can is reduced agreement product, defect ware quantity, it is to avoid " rewinding unit " secondary operation, can be effectively improved production efficiency, reducing energy consumption, with good economic benefit and promotional value.
Description
Technical field
The invention belongs to cold rolled strip steel production technical field, by optimizing planisher in the rolling that state is detected without elongation percentage
Power setting value, alleviates the elongation percentage jump problem during planisher plays parking, reduces the defect ware of strip, can be widely applied to
Cold rolled strip steel production planisher system.
Background technology
In continuous annealing line production process, planisher can carry out start-stop operation or fall-back according to outlet process demand.Flat
Whole machine from dead ship condition to running status during (speed be more than or equal to 30m/min) transition or low cruise (speed is less than 30m/
Min), roll Force control system and cannot provide rational rolling force setup value.Then system just sets two grades of set-points or manually
Used as a reference value, so each planisher rises when stopping definite value, and roll-force can jump to suddenly a reference value from actual roll-force, by
It is larger in difference of them, there are serious saltation electrophoresis.Roll-force kick problem causes the actual elongation percentage of control period product and sets
Determine elongation percentage deviation too big, elongation percentage deviation is up to 200%, so elongation percentage be adjusted to transit time of desired value compared with
It is long, at the same time cause the band steel plate type of regulation process output poor.Generally every time rise stop can cause about 20 meters inferior or
Waste product, directly influences strip quality.The defect ware for causing needs to rewinding unit to carry out secondary production, cause production capacity to reduce,
Energy consumption increases, and directly influences production efficiency and economic benefit.Therefore cannot give in the production of planisher low-speed run state and prolong
In the case of stretching rate, it is that output strip line thirsts for the realistic problem for solving for a long time that roll-force control is optimized.
The content of the invention
It is an object of the invention to by being optimized in the roll-force control that state is detected without elongation percentage to planisher, delay
Solution roll-force kick problem causes the actual elongation percentage of control period product and setting elongation percentage deviation, reduces the ripple of strip elongation percentage
The strip length of dynamic scope and elongation percentage deviation more than 10%.
The control mode of continuous annealing line planisher elongation percentage has roll-force control, roll-force and tension force, volume per second control
Three models, what production was usually used are rolling force control modes.By the principle for rolling force control mode control elongation percentage it is：
Elongation percentage is controlled by roll-force, using 8# idler roller home rolls after 7# idler rollers home roll speed before planisher and planisher
Speed difference calculates actual elongation percentage, the setting value of roll-force is carried out further according to deviation of the actual elongation percentage with setting elongation percentage
Adjustment.It is made up of two parts according to the setting value of above-mentioned principle planisher roll-force, one is manually setting for planisher roll-force
Value or two grades of setting values, i.e. setting section；Two is the roll-force adjusted with the deviation for setting elongation percentage according to actual elongation percentage,
That is adjustment member, two parts collectively form the actual setpoint of planisher roll-force.Without elongation percentage detection state planisher rolling
Power control optimization, exactly starts with research from the setting section of planisher rolling force setup value, is less than in planisher vehicle speed
Rational rolling force setup value is given during 30m/min.Then programming planisher speed during planisher parking is 30m/
Planisher roll-force actual value is stored during min, when speed is less than 30m/min during planisher plays car, by the roll-force of storage
Value is manually set as roll-force, and in good time the value that manually sets of roll-force is analyzed and then is done with actual setpoint
Go out and further adjust.
The present invention compared with before the optimization of planisher roll-force is alleviated planisher and plays roll-force kick problem during parking,
The fluctuation range of strip elongation percentage is reduced, strip length of the elongation percentage deviation more than 10% is reduced.To man-machine control in practical application
Interface processed carries out edit-modify, increases newly " performing optimization operation button ", corresponding to perform roll-force optimal control program.
Without planisher rolling force control device under elongation percentage detection state, control device includes PLC system 1, Human-machine Control
Interface 9, engineer station 8, OBT optical-electrical converters 10, switch 11,7# idler rollers frequency converter 6,8# idler rollers frequency converter 7；
Described PLC system 1 includes SPM-PLC modules 2, FM458 functional modules 3, DP communication modules 4, ether Netcom
News module 5.
7# idler rollers frequency converter 6,8# idler rollers frequency converter 7 are by OBT optical-electrical converters 10, DP lines 12 and DP communication modules
4 set up DP communication connections；Engineer station 8 by the second ethernet line 14, Human-machine Control interface 9 by three-ethernet line 15 with
Switch 11, the first Ethernet 13, ethernet communication module 5 set up ethernet communication connection；
It is specifically shown in 1 planisher roll-force gridless control chart of accompanying drawing.
Arrange in Human-machine Control interface 9 and perform optimization operation button, for stopping in planisher, play Chinese herbaceous peony activator button
Perform optimization program." optimization operation button will be performed " to be active as condition 1.
In engineer station 8, as trigger command when during reduction of speed, smooth motor speed is 30m/min, collection at this moment flat
Whole machine roll-force actual value.When speed is less than 30m/min during next time plays car, the rolling force setup value of storage is given to into rolling
Power manually sets in value.Smooth motor speed reduction of speed is defined as into condition 2 to 30m/min；Planisher is risen vehicle speed to be less than
30m/min is defined as condition 3.
To avoid mutation problems, when smooth motor speed is more than 30m/min, actual setpoint is more than manually setting value
When 2.4 times, program manually sets value within each scan period and adjusts automatically and increases 100N.By smooth motor speed be more than 30m/min and
Actual setpoint is defined as condition 4 more than manually set value 2.4 times.
When condition 1 meets, optimization operation button activation is performed, starts to perform optimization program；
When condition 1 meets, condition 2 meets, and stores roll-force actual value when now smooth motor speed is 30m/min；
When condition 1 meets, condition 3 meets, and the roll-force actual value of storage is manually set value as roll-force；
When condition 1 meets, condition 4 meets, and program manually sets value within each scan period and adjusts automatically and increases 100N.
Without planisher rolling force control method under elongation percentage detection state, comprise the following steps that：
Step one, arrange in Human-machine Control interface and perform optimization operation button, " perform optimization operation button " is in
State of activation is condition 1.
Step 2, when during reduction of speed, smooth motor speed is 30m/min as trigger command, the planisher for gathering at this moment rolls
Power actual value processed；When speed is less than 30m/min during next time plays car, the rolling force setup value of storage is given to into the hand of roll-force
In dynamic setting value.Smooth motor speed reduction of speed is defined as into condition 2 to 30m/min；Planisher is played into vehicle speed fixed less than 30m/min
Justice is condition 3.
To avoid mutation problems, when smooth motor speed is more than 30m/min, actual setpoint is more than manually setting value
When 2.4 times, program manually sets value within each scan period and adjusts automatically and increases 100N.By smooth motor speed be more than 30m/min and
Actual setpoint is defined as condition 4 more than manually set value 2.4 times.
Step 3,
When condition 1 meets, optimization operation button activation is performed, starts to perform optimization program；
When condition 1 meets, condition 2 meets, and stores roll-force actual value when now smooth motor speed is 30m/min；
When condition 1 meets, condition 3 meets, and the roll-force actual value of storage is manually set value as roll-force；
When condition 1 meets, condition 4 meets, and program manually sets value within each scan period and adjusts automatically and increases 100N.
In the case that planisher roller replacing operation or interim reduction of speed stop, operative employee is performed in clicking on Human-machine Control interface
" optimization operation button ", when the speed of planisher drops to 30m/min, one-level program receives rising edge trigger command, by this
When planisher roll-force actual value be stored in variable, when planisher rise car after speed be less than 30m/min when will preserve before
Roll-force to variable is given to and manually sets in value.In order to avoid the mutation after 30m/min, it is more than 30m/ in smooth motor speed
, more than manually setting 2.4 times of value, program manually sets value within each scan period and adjusts automatically increasing for min and actual setpoint
100N。
Advantages of the present invention good effect is：
By optimizing to planisher rolling force setup value, planisher low cruise is made up, is detected without elongation percentage and then nothing is prolonged
Stretch the defect that rate deviation adjusts roll-force saltus step under state of value to rolling force setup value.New plus execution optimization operation button, is easy to
Operative employee operates, and makes the control variation to planisher elongation percentage.Using the elongation percentage mutation problems of planisher after optimization program
Alleviated, reduced the fluctuation range of elongation percentage, reduced strip length of the elongation percentage deviation more than 10%.Reduce inferior
The yield of product and agreement product, to improve production efficiency and the important realistic meaning of economic benefit, with good application value.
Description of the drawings
Fig. 1 is planisher roll-force gridless control chart：S7-400PLC systems 1, PLC system SPM CPU module 2, FM458
Functional module 3, DP communication modules 4, ether communication module 5,7# idler rollers frequency converter 6,8# idler rollers frequency converter 7, engineer station
8, Human-machine Control interface 9, OBT optical-electrical converters 10, switch 11, DP netting twines 12, the first ethernet line 13, the second ethernet line
14, three-ethernet line 15.
Fig. 2 planisher roll-force optimal control flow charts.Condition 1, condition 2, condition 3, condition 4 are as previously mentioned in the definition.
Specific embodiment
The present invention relates to：PLC system SPM CPU module, FM458 functional modules, Human-machine Control interface, engineer station, DP
Communication module, ethernet communication module, OBT optical-electrical converters, switch, 7# idler roller frequency converters, 8# idler roller frequency converters etc..
Velocity feedback calculates 7# and 8# to FM458 functional modules, FM458 by DP communication modules by 7# and 8# idler rollers frequency converter
Tight roller speed difference obtains the actual elongation percentage of planisher；PLC system SPM CPU module is by comparing the actual elongation percentage of planisher and setting
Determine elongation percentage, obtain the adjustment member of the setting value of planisher roll-force；Correct planisher rolling force setup value is issued, is entered
And pass through the purpose that DP communication module controlled motors, frequency converter reach adjustment tensioning roller speed and elongation percentage.It is specifically shown in accompanying drawing 1 flat
Whole machine roll-force gridless control chart.
It is embodied as being divided into that control program is debugged offline, on-line debugging, program parameter optimize three parts.
1st, control program is debugged offline
Debugging includes the offline debugging to human-computer interface control picture and engineer station to control program offline
(1) make in former control interface and perform optimization operation button, increase order and two labels of state, realize one-level journey
The communication of sequence.The program function of button is realized in engineer station with order and state.
(2) when stopping when smooth motor speed is 30m/min, the planisher rolling force setup value of this when is stored.
When car is played when speed is less than 30m/min, the rolling force setup value of storage is given to into the manually setting in value of roll-force.
(3) to avoid mutation problems, when speed is more than 30m/min, actual setpoint is more than manually setting the 2.4 of value
Times, program manually sets value within each scan period and adjusts automatically and increases 100N.
2nd, on-line debugging
Start and perform optimization operation button, the control program of online program monitoring planisher roll-force makes interior in program
Portion's logic is rationalized.Check whether the rolling force setup value of the planisher when the speed of planisher declines equal to 30m/min is timely
Be saved in variable, if it find that no storing and setting value, the execution optimization operation button checked in man-machine controlling interface is
It is no to be activated.If it find that button state not to or variable can not be preserved, check between the label of man-machine interface and PLC program
Whether communication is correct, then checks whether set-reset flip-floop state is normal in PLC program, and system can put into operation.
3rd, program parameter optimization
Through coordinating to carry out in thread test, the debugging of program is summarized and the result tested is analyzed, reasonably right
Program parameter optimizes.Before and after test proves planisher roll-force optimization program performing, using PDA (data acquisition and analysis software)
Data are analyzed, and before optimization, elongation percentage mutation maximum has reached 100-200% or so, and elongation percentage deviation exceeds 10% band
Steel is beyond 15-20m or so.After performing optimization program, elongation percentage changes 25-35% or so, and elongation percentage deviation exceeds 10% band
Steel is most long less than 5-8m or so.
Claims (2)
1. without planisher rolling force control device under elongation percentage detection state, it is characterised in that：Control device includes PLC system
(1), Human-machine Control interface (9), engineer station (8), OBT optical-electrical converters (10), switch (11), 7# idler roller frequency converters
(6), 8# idler rollers frequency converter (7)；
Described PLC system (1) includes SPM-PLC modules (2), FM458 functional modules (3), DP communication modules (4), ether
Net communication module (5)；
7# idler roller frequency converters (6), 8# idler roller frequency converters (7) are communicated by OBT optical-electrical converters (10), DP lines (12) and DP
Module (4) sets up DP communication connections；Engineer station (8) is by the second ethernet line (14), Human-machine Control interface (9) by the 3rd
Ethernet line (15) is set up ethernet communication and is connected with switch (11), the first Ethernet (13), ethernet communication module (5)；
Arrange in described Human-machine Control interface (9) and perform optimization operation button, for stopping in planisher, play Chinese herbaceous peony activation and press
Button performs optimization program；" optimization operation button will be performed " to be active as condition 1；
In described engineer station (8), as trigger command when during reduction of speed, smooth motor speed is 30m/min, gather at this moment
Planisher roll-force actual value；When speed is less than 30m/min during next time plays car, the rolling force setup value of storage is given to and is rolled
Power processed is manually set in value；Smooth motor speed reduction of speed is defined as into condition 2 to 30m/min；Planisher is risen vehicle speed to be less than
30m/min is defined as condition 3；
When smooth motor speed is more than 30m/min, actual setpoint more than when manually setting 2.4 times of value, sweep at each by program
Retouch and increase 100N；Smooth motor speed is more than into 30m/min and actual setpoint more than setting manually
2.4 times of definite value are defined as condition 4；
When condition 1 meets, optimization operation button activation is performed, starts to perform optimization program；
When condition 1 meets, condition 2 meets, and stores roll-force actual value when now smooth motor speed is 30m/min；
When condition 1 meets, condition 3 meets, and the roll-force actual value of storage is manually set value as roll-force；
When condition 1 meets, condition 4 meets, and program manually sets value within each scan period and adjusts automatically and increases 100N.
2. without planisher rolling force control method under elongation percentage detection state, it is characterised in that：
Step one, arrange in Human-machine Control interface and perform optimization operation button, will " perform optimization operation button " in activation
State is condition 1；
Step 2, when during reduction of speed, smooth motor speed is 30m/min as trigger command, gather planisher roll-force at this moment
Actual value；When speed is less than 30m/min during next time plays car, the rolling force setup value of storage is given to into setting manually for roll-force
In definite value；Smooth motor speed reduction of speed is defined as into condition 2 to 30m/min；Planisher is risen vehicle speed to be defined as less than 30m/min
Condition 3；
When smooth motor speed is more than 30m/min, actual setpoint more than when manually setting 2.4 times of value, sweep at each by program
Retouch and increase 100N；Smooth motor speed is more than into 30m/min and actual setpoint more than setting manually
2.4 times of definite value are defined as condition 4；
Step 3,
When condition 1 meets, optimization operation button activation is performed, starts to perform optimization program；
When condition 1 meets, condition 2 meets, and stores roll-force actual value when now smooth motor speed is 30m/min；
When condition 1 meets, condition 3 meets, and the roll-force actual value of storage is manually set value as roll-force；
When condition 1 meets, condition 4 meets, and program manually sets value within each scan period and adjusts automatically and increases 100N.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510441734.8A CN105013836B (en) | 2015-07-25 | 2015-07-25 | Without planisher rolling force control device and its method under elongation percentage detection state |
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| CN201510441734.8A CN105013836B (en) | 2015-07-25 | 2015-07-25 | Without planisher rolling force control device and its method under elongation percentage detection state |
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| CN105013836B true CN105013836B (en) | 2017-04-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107520256B (en) * | 2017-09-12 | 2019-07-02 | 首钢集团有限公司 | The control method of smooth elongation percentage during a kind of planisher start and stop vehicle |
| CN113649420B (en) * | 2021-07-28 | 2023-10-24 | 首钢京唐钢铁联合有限责任公司 | Temper mill rolling force obtaining method and device |
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| JPH04224010A (en) * | 1990-12-26 | 1992-08-13 | Kawasaki Steel Corp | Method for controlling rolling down force in temper rolling of steel strip |
| CN201342426Y (en) * | 2008-12-18 | 2009-11-11 | 鞍钢集团自动化公司 | TDC hot rolling skin pass mill control system |
| KR20120032865A (en) * | 2010-09-29 | 2012-04-06 | 현대제철 주식회사 | Apparatus for measuring elongation of skin pass mill |
| CN102718089A (en) * | 2012-06-18 | 2012-10-10 | 北京首钢自动化信息技术有限公司 | Online strip steel CPC (center position control) audible-visual alarming system |
| CN102899478A (en) * | 2012-10-16 | 2013-01-30 | 北京首钢自动化信息技术有限公司 | Method for removing matter adhered to furnace roller of annealing furnace |
| DE102014207859A1 (en) * | 2013-04-26 | 2014-10-30 | Sms Siemag Ag | Process and rolling stand for cold rolling of rolling stock |
| CN104492823A (en) * | 2014-12-22 | 2015-04-08 | 中冶南方（武汉）自动化有限公司 | Method for obtaining constant elongation in states of acceleration and deceleration |
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2015
- 2015-07-25 CN CN201510441734.8A patent/CN105013836B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04224010A (en) * | 1990-12-26 | 1992-08-13 | Kawasaki Steel Corp | Method for controlling rolling down force in temper rolling of steel strip |
| CN201342426Y (en) * | 2008-12-18 | 2009-11-11 | 鞍钢集团自动化公司 | TDC hot rolling skin pass mill control system |
| KR20120032865A (en) * | 2010-09-29 | 2012-04-06 | 현대제철 주식회사 | Apparatus for measuring elongation of skin pass mill |
| CN102718089A (en) * | 2012-06-18 | 2012-10-10 | 北京首钢自动化信息技术有限公司 | Online strip steel CPC (center position control) audible-visual alarming system |
| CN102899478A (en) * | 2012-10-16 | 2013-01-30 | 北京首钢自动化信息技术有限公司 | Method for removing matter adhered to furnace roller of annealing furnace |
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