CN201046452Y - Continuous casting tension leveler dynamic load distribution control device - Google Patents
Continuous casting tension leveler dynamic load distribution control device Download PDFInfo
- Publication number
- CN201046452Y CN201046452Y CNU2007200683600U CN200720068360U CN201046452Y CN 201046452 Y CN201046452 Y CN 201046452Y CN U2007200683600 U CNU2007200683600 U CN U2007200683600U CN 200720068360 U CN200720068360 U CN 200720068360U CN 201046452 Y CN201046452 Y CN 201046452Y
- Authority
- CN
- China
- Prior art keywords
- load
- speed
- correction value
- continuous casting
- controller
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Multiple Motors (AREA)
- Continuous Casting (AREA)
Abstract
The utility model relates to a device for distribute and control the load of the conticaster system, in particular to a dynamic load distributing and controlling device for the continuous casting withdrawal-straightener, belonging to the control field of the multi-motor electric transmission system of the conticaster, which comprises a controller and a speed correction value calculator connected with the controller, wherein, the driving motors of the transmission equipments of the continuous casting withdrawal-straightener are connected in series with a plurality of speed control systems and the load detectors of a plurality of motors respectively; the output signals of the load detectors are connected with the speed correction value calculator; the control signals are connected with the speed control systems via the controller; the speed correction value calculator comprises an average current calculating unit, a deviation current calculating unit, and a speed correction value calculating unit, which are connected in series; the controller comprises a speed set value calculating unit. The utility model is mainly used to solve the problem of overload of transmission motors and devices, and is mainly used on real-time and precise load control of the transmission motors of equalizing continuous casting withdrawing-straightening system.
Description
Technical field:
The utility model relates to the control field of the many motors electric drive system that is used for conticaster, and particularly the load of conticaster straightening system distributes a kind of device of control.
Background technology:
Generally, conticaster straightening system is the multiple electric motors transmission.Conticaster is in the process of billet withdrawal of actual production, and can find that the load of each motor of straightening system is unbalanced: the motor load that has is bigger, even is in operation under the overload; The motor load that has is less, is in substantially under zero load or the regenerative power generation state to move, and this differs bigger with regard to the load that each motor of whole straightening system is described.This situation long-time running goes down to be bound to make the big motor of load and transmission device operation conditions not good, influences the normal service life of equipment, the certain economic that causes thus loss.In addition, because each live-roller of straightening system does not wait in the throwing power that whole casting billet surface provides, slab surface quality has been caused harmful effect.
How to solve the not good difficult problem of load distribution of each motor of straightening system, through investigation, analysis to domestic each large-scale iron and steel enterprise, discovery control to load on the milling train of iron and steel enterprise has some application, distribute control device as a kind of load of Continuous Roller milling train, when rolling load ratio on each bearing of Continuous Roller milling train and targeted loads ratio are inconsistent, basis calculates each bearing thickness of slab correction from the error of this targeted loads ratio.
This load distributes control to distribute the control feature to be for the load of Continuous Roller milling train:
1) promptly when the rolling load ratio on each bearing of Continuous Roller milling train and targeted loads ratio are inconsistent, revises adjusting.
2) be benchmark with predefined targeted loads ratio.
3) regulated quantity for the correction of Continuous Roller milling train is a thickness of slab.
Load at above-mentioned Continuous Roller milling train distributes in the control technology, and is also inapplicable for the load distribution of conticaster straightening system.The technological requirement of conticaster must at first guarantee the stable and precision of casting speed, and the load that just can carry out the straightening system under this prerequisite distributes.The thickness of strand can't change in the production of conticaster, thereby also just can not be with revising this mode of thickness of slab, and the approach that must seek other solves the problem that load distributes.
The utility model content:
The purpose of this utility model provides a kind of tension leveller of continuous casting machine dynamic load and distributes control device, the problem that solves: the load of real-time, each driving motor of the system of balanced conticaster straightening accurately, solve part driving motor and the excessive problem of device load, the power that also makes each live-roller be applied to base shell surface simultaneously is average distribution basically, eliminates the negative effect to the quality of slab.
The thinking that the utility model is dealt with problems is: to be controlled to be the basis automatically the Electrified Transmission control of continuous casting straightening system is studied, designed a kind of load and distribute control device.The mean value of each driving motor load of getting conticaster straightening system is as benchmark, and the load control trend of each driving motor is all to draw close to this mean value.Calculate the deviation of the load average value of each driving motor and all motors, the flat deviation of load be converted into the speed correction value of every motor, and and former speed setting value be superimposed motor speed regulated correction.The task of being load distribution control is exactly to give relevant Electrified Transmission control section for each driving motor computational speed setting value and setting value.
The technical solution of the utility model is: a kind of tension leveller of continuous casting machine dynamic load distributes control device, the speed correction value calculator that comprises controller and be connected with controller, the drive motors of each drive apparatus of tension leveller of continuous casting machine is connected in series with the load sensor of speed control system and motor respectively, the output signal access speed correction value calculator of each load sensor inserts each speed control system by controller with control signal.
Speed correction value calculator is made of the computing unit of the average current computing unit that is connected in series, deviation current calculation unit, speed correction value.
Controller includes the computing unit of speed setting value.
The beneficial effects of the utility model are: the load of each driving motor that dynamic load distribution control device is real-time, balanced accurately, the performance indications requirement that it is dynamic, steady-state characteristic also satisfies control system, the power that makes each live-roller be applied to base shell surface is average distribution basically, eliminated negative effect, also solved the excessive problem of part driving motor permanent load simultaneously slab quality.Proved that by on-the-spot reality it is the production reality that suits conticaster that this load distributes control device, can be used for optimizing and produces.
Description of drawings:
Fig. 1: the utility model structural representation.
Fig. 2: the utility model load distributes the speed correction value calculator structure piece figure of control device.
Fig. 3: the utility model load distributes the controller architecture piece figure of control device
Among the figure: 1-speed control system (Siemens-6SE70 series), the 2-load sensor, model is the (LEIN﹠amp of Sweden TUV; LINDE company), 3-drive motors (1LA of Siemens), the 4-load distributes control device (S7-400 of Siemens series), 5-speed correction value calculator, the 6-controller, 7-average current computing unit, 8-deviation current calculation unit, the computing unit of 9-speed correction value, the computing unit of 10-speed setting value.
The relevant all devices of expression continuous casting machine tension leveling system among Fig. 1: every drive apparatus has a drive motors 3, The load sensor 2 of each motor is for detection of load current value, and 1 pair of each motor of speed control system is controlled, and is negative Carry detector, speed control system is connected with load distribution control device 4. Each drive motors that load sensor 2 detects Actual loading value (Ii) be input to speed correction value calculator 5, calculate the speed of each drive motors by control algolithm Correction value (ni cor), speed correction value calculator 5 is with speed correction value (n theni cor) send into the speed setting value (n that controller 6 calculates each motori set), and output to speed control system 1 from controller 6 at last, to the speed of each motor Degree is adjusted the load that realizes thus the continuous casting straightening system and is distributed control.
Fig. 2 illustrates that load distributes the control of the speed correction value calculator 5 of control device, comprising: average current calculates single Unit 7, deviation current calculation unit 8, the computing unit 9 of speed correction value.
Fig. 3 illustrates that load distributes the control of the controller 6 of control device, mainly contains the computing unit 10 of speed setting value.
The specific embodiment:
With reference to Fig. 1, the following describes the tension leveller of continuous casting machine dynamic load and distribute control device, device is made up of speed correction value calculator 5,6 two parts of controller.
One) speed correction value calculator 5
Can know from Fig. 2: load distributes speed correction value calculator 5 major functions of control device for realizing comprising the calculating of mean value, the calculation task of speed correction value.
The input of average current computing unit 7 has:
● I
1, I
2, I
i... I
n---the actual current value of driving motor.
● I
10, I
20, I
I0... I
N0---the no-load current value of driving motor.
● I
m---all are in the driving motor actual current (I that load distributes control
i) and no-load current (I
I0) the mean value of difference.
The input of deviation current calculation unit 8 has:
● Δ I
i=I
i-I
I0---this driving motor actual current (I
i) and no-load current (I
I0) poor
● I
I cor---the deviation electric current of this driving motor
The input of the computing unit 9 of speed correction value has:
● n
I rat---normal speed (r.p.m)
● I
I rat---rated current
● n
I cor---the speed correction value
The calculating of 1 mean value
1.1 no-load current (I
0) from dynamic(al) correction
No-load current (the I of every motor
I0) be input to the average current computing unit 7 of speed correction value calculator, can enough boolean's selectors measured automatically and exist in the memory.
Distribute the interior driving motor quantity (N) of control range 1.2 determine to be in load
Calculate the driving motor quantity (N) that is in the load distribution control range by the casting machine tracking system.
1.3 I
mComputing formula:
Average current computing unit 7 distributes the driving motor quantity (N) in the control range that the load current (Ii) of every motor of load sensor 2 outputs is sued for peace according to being in load, draws the mean value of load then.Following formula (1) is arranged:
I
m---all are in the driving motor actual current (I that load distributes control
i) and no-load current (I
I0) the mean value of difference.
I
i---actual current
I
I0---no-load current
N---be in load and distribute the interior driving motor quantity (N) of control range
The calculating of 2 speed correction values
Another task of speed correction value calculator 5 is that computing unit 9 by the speed correction value is with load current value (Δ I
i) and average current (I
m) between deviation according to certain ratio conversion rate deviation, the i.e. correction value (n of speed
I cor).Following formula (2) is arranged:
n
I cor---speed correction value (r.p.m)
I
m---all are in the driving motor actual current (I that load distributes control
i) and no-load current (I
I0) the mean value of difference.
Δ I
i---actual current (I
i) and no-load current (I
I0) poor (I
i-I
I0)
n
I rat---normal speed (r.p.m)
I
I rat---rated current (A)
Two) controller
Can know from Fig. 3: load distributes controller 6 major functions of control device for realizing the calculating of speed setting value.The input of the computing unit 10 of speed setting value has:
● D
i---the roller footpath
● G
i---gearratio
● v
I cast---speed setting value (m/min)
● n
I set---speed setting value (r.p.m)
The calculating of speed setting value
Correction value (the n of the speed of controller 6 inbound pacing correction value calculators 5
I cor), revise former speed setting value (v
I cast) back generation speed setting value (n
I set), thereby the rotating speed of each drive motors is regulated, following formula (3) is arranged:
n
I set---speed setting value (r.p.m)
v
I cast---speed setting value (m/min)
D
i---roller footpath (mm)
G
i---gearratio
n
I cor---speed correction value (r.p.m)
∏---pi
Because continuous casting manufacturing technique is a dynamic process, be that to be aligned and shift out required throwing power in casting machine be the value of a variation to strand, the throwing power of the output of straightening system so also will change thereupon, and each driving motor of straightening system the relatively size of the throwing power of output also changes, i.e. straightening system the load distribution be dynamic.So average load Im must change as can be known.But because the output loading of each driving motor of effect of load distribution control device is all close to the average load direction, so the load of all motors is also with regard to equalize trend, consistent.
After the putting into operation of dynamic load distribution system, systematic function is good, and is stable, improved the situation of the long-term overload of part drive motors, improved cc billet surface quality.
Claims (3)
1. a tension leveller of continuous casting machine dynamic load distributes control device, it is characterized in that: the speed correction value calculator that comprises controller and be connected with controller, the drive motors of each drive apparatus of tension leveller of continuous casting machine is connected in series with the load sensor of speed control system and motor respectively, the output signal access speed correction value calculator of each load sensor inserts each speed control system by controller with control signal.
2. a kind of tension leveller of continuous casting machine dynamic load according to claim 1 distributes control device, it is characterized in that: speed correction value calculator is made of the computing unit of the average current computing unit that is connected in series, deviation current calculation unit, speed correction value.
3. a kind of tension leveller of continuous casting machine dynamic load according to claim 1 distributes control device, and it is characterized in that: controller includes the computing unit of speed setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200683600U CN201046452Y (en) | 2007-03-29 | 2007-03-29 | Continuous casting tension leveler dynamic load distribution control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200683600U CN201046452Y (en) | 2007-03-29 | 2007-03-29 | Continuous casting tension leveler dynamic load distribution control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201046452Y true CN201046452Y (en) | 2008-04-16 |
Family
ID=39299026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200683600U Expired - Fee Related CN201046452Y (en) | 2007-03-29 | 2007-03-29 | Continuous casting tension leveler dynamic load distribution control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201046452Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233416A (en) * | 2010-04-28 | 2011-11-09 | 宝山钢铁股份有限公司 | Lightly-pressed roll speed control method |
| CN103192044A (en) * | 2013-04-19 | 2013-07-10 | 中冶连铸技术工程股份有限公司 | Drive load control method and drive load control device for drawing roller |
| CN103394663A (en) * | 2013-07-06 | 2013-11-20 | 马钢(集团)控股有限公司 | Method for realizing load balance of tension leveler |
| CN104001886A (en) * | 2014-05-12 | 2014-08-27 | 中冶南方工程技术有限公司 | Continuous-casting withdrawal and straightening unit system and load distributing method |
| CN105251956A (en) * | 2015-10-20 | 2016-01-20 | 山东钢铁股份有限公司 | Continuous casting tension leveler control method and device and terminal |
| CN106111929A (en) * | 2016-07-25 | 2016-11-16 | 江苏联峰能源装备有限公司 | A kind of round billet continuous casting straightening motor load dynamically distributes control system and control method thereof |
| CN108114990A (en) * | 2016-11-28 | 2018-06-05 | 宝山钢铁股份有限公司 | A kind of control method for preventing milling train stall overload protection |
| CN113798460A (en) * | 2021-09-01 | 2021-12-17 | 中冶南方连铸技术工程有限责任公司 | Tension leveler system and method for adjusting load factor of transmission device of tension leveler |
-
2007
- 2007-03-29 CN CNU2007200683600U patent/CN201046452Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233416A (en) * | 2010-04-28 | 2011-11-09 | 宝山钢铁股份有限公司 | Lightly-pressed roll speed control method |
| CN102233416B (en) * | 2010-04-28 | 2013-04-24 | 宝山钢铁股份有限公司 | Lightly-pressed roll speed control method |
| CN103192044A (en) * | 2013-04-19 | 2013-07-10 | 中冶连铸技术工程股份有限公司 | Drive load control method and drive load control device for drawing roller |
| CN103394663A (en) * | 2013-07-06 | 2013-11-20 | 马钢(集团)控股有限公司 | Method for realizing load balance of tension leveler |
| CN104001886A (en) * | 2014-05-12 | 2014-08-27 | 中冶南方工程技术有限公司 | Continuous-casting withdrawal and straightening unit system and load distributing method |
| CN104001886B (en) * | 2014-05-12 | 2016-06-29 | 中冶南方工程技术有限公司 | A kind of tension leveller of continuous casting machine system and load distribution method |
| CN105251956A (en) * | 2015-10-20 | 2016-01-20 | 山东钢铁股份有限公司 | Continuous casting tension leveler control method and device and terminal |
| CN106111929A (en) * | 2016-07-25 | 2016-11-16 | 江苏联峰能源装备有限公司 | A kind of round billet continuous casting straightening motor load dynamically distributes control system and control method thereof |
| CN108114990A (en) * | 2016-11-28 | 2018-06-05 | 宝山钢铁股份有限公司 | A kind of control method for preventing milling train stall overload protection |
| CN108114990B (en) * | 2016-11-28 | 2019-08-27 | 宝山钢铁股份有限公司 | A kind of control method preventing milling train stall overload protection |
| CN113798460A (en) * | 2021-09-01 | 2021-12-17 | 中冶南方连铸技术工程有限责任公司 | Tension leveler system and method for adjusting load factor of transmission device of tension leveler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201046452Y (en) | Continuous casting tension leveler dynamic load distribution control device | |
| CN201063106Y (en) | Double electrical machine high-precision multifunctional bar flying shear control system | |
| CN102621932B (en) | Energy consumption prediction method for use in service process of numerically-controlled machine tool | |
| CN103970073B (en) | A kind of deceleration planning method for digital control system, device and Digit Control Machine Tool | |
| CN104117554B (en) | A kind of high-accuracy straightening machine automatic control system and control method | |
| CN102227306A (en) | Method in production system for limiting peak power | |
| CN102849625A (en) | Spreader anti-sway controlling method of overhead traveling crane | |
| CN102513351A (en) | Rolling method and device for strip steel tandem cold rolling | |
| CN106111929B (en) | A kind of round billet continuous casting straightening motor load dynamically distributes control system and its control method | |
| CN104001886B (en) | A kind of tension leveller of continuous casting machine system and load distribution method | |
| CN106413930A (en) | Energy consumption predicting device for rolling line | |
| CN103558548A (en) | Multifunctional servo motor performance testing device and testing system thereof | |
| CN105775948B (en) | A kind of elevator starter compensation method | |
| CN204228409U (en) | RV speed reduction unit drive characteristic test macro | |
| CN111335055A (en) | Multi-strand tension balancing self-adaptive control system and method | |
| CN203006584U (en) | Control device for tension roll on plate-strip processing line | |
| CN202189254U (en) | Rolled steel bar hot saw control system | |
| CN103192044A (en) | Drive load control method and drive load control device for drawing roller | |
| CN202606510U (en) | Cold-rolled strip steel plate shape and plate thickness comprehensive control system | |
| CN114578682A (en) | Coal mining machine towing cable control method and device and storage medium | |
| CN204685669U (en) | A kind of hot rolling line Finish Mill Roll Changing dolly automatic station-keeping system | |
| CN102641897A (en) | Gauge and flatness comprehensive control method of cold rolled steel sheet | |
| CN102513369A (en) | Hydraulic servo simulation control device and method thereof | |
| CN109208491B (en) | Bridge rotation construction traction equipment control method and system | |
| Schulze | Design and optimization of planetary gears considering all relevant influences |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080416 Termination date: 20160329 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |