CN104785545A - Comprehensive measurement signal processing method and device for contact type plate-shaped roller - Google Patents
Comprehensive measurement signal processing method and device for contact type plate-shaped roller Download PDFInfo
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Abstract
The invention is suitable for the field of strip steel cold rolling, and provides a comprehensive measurement signal processing method for a contact type plate-shaped roller. The method includes the steps of calculating a smoothing factor according to the direct proportion relation of the strip steel outlet speed and the smoothing factor, calculating the radial force value obtained after smoothing is conducted according to a pressure value A1, measured through a previous time node, of a pressure sensor A, a pressure value A2, measured through a current time node, of the pressure sensor A and the smoothing factor, leading in the radial force values, obtained after smoothing is conducted, of the pressure sensor A, a pressure sensor B and a pressure sensor C in the time node according to the pressure sensor B and the pressure sensor C which are adjacent to the pressure sensor A in the left and right direction and through the cooperation with a linear factor, calculating the radial force obtained after linear processing, and calculating the radial force difference values of the pressure sensors according to the radial force obtained after linear processing. By means of the method, adverse effects brought by the outside world are eliminated in the measurement process, the accuracy of measurement signals is improved, and powerful guarantees are provided for achieving high-quality plate shape feedback control.
Description
Technical field
The invention belongs to cold rolling of strip steel field, particularly relate to a kind of contact plate shape roller measuring-signal integrated conduct method and device.
Background technology
In order to roll out the cold-rolled steel strip products of high-quality, advanced plate shape closed-loop feedback control system is have employed in some modern cold rolling enterprise production process, generally adopt plate shape roller to obtain belt plate shape feedback signal in system, the stability of plate shape roller measuring-signal and precision will directly have influence on the control effects of whole closed-loop feedback control system.Plate shape roller is according to whether being divided into contact plate shape roller and contactless plate shape roller with being with steel directly to contact, comparatively speaking, contact plate shape roller has the outstanding advantages such as certainty of measurement is high, measuring-signal reliable, signal antijamming capability is strong, and thus existing cold-rolled strip steel shape closed-loop control system major part adopts contact plate shape roller to carry out the on-line measurement of plate shape.
Belt plate shape value directly cannot be measured and obtain, contact plate shape roller measures strip tension by piezoelectric transducer, and to the radial pressure of plate shape roller, (band steel is tangent with plate shape roller, the direction in the sensing plate shape roller center of circle, point of contact is called the radial direction of plate shape roller, described radial pressure is exactly strip tension component in the direction in which), then changed by post-processed and indirectly obtain belt plate shape value.
The total measurement range of plate shape roller is divided into several measured zone, is furnished with piezoelectric transducer in the middle part of each measured zone, the various interference existed in measuring process, and the radial force value that piezoelectric transducer is measured directly uses can bring error usually.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of contact plate shape roller measuring-signal integrated conduct method, and to solve in prior art measuring process the various interference existed, the radial force value that piezoelectric transducer is measured directly uses the problem usually bringing error.
The embodiment of the present invention is achieved in that a kind of contact plate shape roller measuring-signal integrated conduct method, said method comprising the steps of:
According to the proportional relation being with steel exports speed and smoothing factor, calculate smoothing factor; The force value A1 measured at last timing node according to pressure sensor A, the force value A2 of current time node measurement and described smoothing factor, calculate the radial force value after smoothing processing; The pressure sensor B adjacent according to described pressure sensor about A and pressure sensor C, line of engagement sex factor, introduce described pressure sensor A, pressure sensor B and pressure sensor C in this timing node, the radial force value after smoothing processing, and calculate the radial load after linear process; According to the radial load after described linear process, calculate the radial load difference of each pressure sensor.
Preferably, described method also comprises: according to the radial load difference of each pressure sensor, and adjustment working roll acts on the force value on band steel.
Preferably, after completing described linear process, before calculating the radial load difference of described each pressure sensor, described method also comprises: according to the deformation error amount of plate shape roller, compensates the radial force value after described linear process, is compensated rear radial force value; Then described according to the radial load after described linear process, calculate the radial load difference of each pressure sensor, specifically comprise: according to the radial force value after described compensation deals, calculate the radial load difference of each pressure sensor.
Preferably, after completing described compensation deals, before calculating the radial load difference of each pressure sensor, described method also comprises: complete the radial force value after described compensation deals described in normalization; Then described according to the radial force value after described compensation deals, calculate the radial load difference of each pressure sensor, specifically comprise: according to the radial force value after normalized, calculate the radial load difference of each pressure sensor.
Preferably, the described proportional relation according to being with steel exports speed and smoothing factor, calculates smoothing factor and is specially: obtain according to following formulae discovery:
wherein, v
stripfor the actual muzzle velocity of band steel, v
minand v
maxbe respectively minimum of a value and the maximum of band steel exports speed, G
v, maxfor the maximum of the rate smoothing factor, G
v, max>1.0.
Preferably, the radial force value after described calculating smoothing processing, is specially: obtain according to following formulae discovery:
wherein, F
rA[A] [n-1] and F
rA[A] [n] represents the radial force value of the radial force value that the last timing node of measured zone A is measured and current time node measurement respectively.
The embodiment of the present invention additionally provides a kind of contact plate shape roller measuring-signal Integrated Processing Unit on the other hand, comprises plate shape roller, one or more pressure sensor and processor, concrete:
Plate shape roller is provided with one or more pressure sensor, and by forming height potential difference mode, makes band steel produce radial pressure through described plate shape roller; Described pressure sensor is used for the radial pressure that measuring tape steel produces; Described processor, for the proportional relation according to band steel exports speed and smoothing factor, calculates smoothing factor; The force value A1 measured at last timing node according to pressure sensor A, the force value A2 of current time node measurement and described smoothing factor, calculate the radial force value after smoothing processing; The pressure sensor B adjacent according to described pressure sensor about A and pressure sensor C, line of engagement sex factor, introduce described pressure sensor A, pressure sensor B and pressure sensor C in this timing node, the radial force value after smoothing processing, and calculate the radial load after linear process; According to the radial load after described linear process, calculate the radial load difference of each pressure sensor.
Preferably, described processor also for: according to the radial load difference of each pressure sensor, adjustment working roll act on band steel on force value.
Preferably, described processor also for: according to the deformation error amount of plate shape roller, compensate the radial force value after described linear process, be compensated rear radial force value; According to the radial force value after described compensation deals, calculate the radial load difference of each pressure sensor.
Preferably, described processor also for: complete the radial force value after described compensation deals described in normalization; According to the radial force value after normalized, calculate the radial load difference of each pressure sensor.
The beneficial effect of a kind of contact plate shape roller measuring-signal integrated conduct method that the embodiment of the present invention provides comprises: the embodiment of the present invention overcomes the harmful effect that the various external disturbance in measuring process are brought, improve the precision of measuring-signal, providing strong guarantee for realizing high-quality plate shape FEEDBACK CONTROL.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of contact plate shape roller measuring-signal Integrated Processing Unit that the embodiment of the present invention provides;
Fig. 2 is the schematic flow sheet of a kind of contact plate shape roller measuring-signal integrated conduct method that the embodiment of the present invention provides;
Fig. 3 is the schematic flow sheet of a kind of contact plate shape roller measuring-signal integrated conduct method that the embodiment of the present invention provides;
Fig. 4 is the schematic flow sheet of a kind of contact plate shape roller measuring-signal integrated conduct method that the embodiment of the present invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In order to technical solutions according to the invention are described, be described below by specific embodiment.
Embodiment one
Be illustrated in figure 2 the flow chart of a kind of contact plate shape roller measuring-signal integrated conduct method provided by the invention, said method comprising the steps of:
In step 201, according to the proportional relation being with steel exports speed and smoothing factor, calculate smoothing factor.
The rate smoothing factor is directly proportional with band steel exports speed, when band steel exports speed is at certain limit [v
min, v
max] in change time, the rate smoothing factor is also at certain limit [1.0, G
v, max] internal linear change.Wherein, G
v, maxfor the maximum of the rate smoothing factor, G
v, max>1.0.Smoothing factor is used for compensation speed to the impact of radial load measuring process.
In step 202., the force value A1 measured at last timing node according to pressure sensor A, the force value A2 of current time node measurement and described smoothing factor, calculate the radial force value after smoothing processing.
In step 203, the pressure sensor B adjacent according to described pressure sensor about A and pressure sensor C, line of engagement sex factor, introduce described pressure sensor A, pressure sensor B and pressure sensor C in this timing node, radial force value after smoothing processing, and calculate the radial load after linear process.
In step 204, according to the radial load after described linear process, calculate the radial load difference of each pressure sensor.
The embodiment of the present invention overcomes the harmful effect that the various external disturbance in measuring process are brought, and improves the precision of measuring-signal, provides strong guarantee for realizing high-quality plate shape FEEDBACK CONTROL.
After calculating described radial load difference, in order to set forth the concrete using method of its result of calculation, therefore, preferably, after executing step 204 described in the present embodiment, also comprise step 205.
As shown in Figure 3, in step 205, according to the radial load difference of each pressure sensor, adjustment working roll 13 acts on the force value on band steel.Specific implementation is: server 10 sends the instruction of adjustment force value to module 14 of exerting pressure, and adjusts the pressure size of working roll 13 to band steel by described module of exerting pressure.
In conjunction with the present embodiment, there is a kind of easily extensible scheme, before calculating the radial load difference of described each pressure sensor, described method also comprises:
According to the deformation error amount of plate shape roller, compensate the radial force value after described linear process, be compensated rear radial force value;
Then described according to the radial load after described linear process, calculate the radial load difference of each pressure sensor, specifically comprise:
According to the radial force value after described compensation deals, calculate the radial load difference of each pressure sensor.
In conjunction with the present embodiment, there is a kind of easily extensible scheme, after completing described compensation deals, before calculating the radial load difference of each pressure sensor, described method also comprises:
The radial force value after described compensation deals is completed described in normalization;
Then described according to the radial force value after described compensation deals, calculate the radial load difference of each pressure sensor, specifically comprise:
According to the radial force value after normalized, calculate the radial load difference of each pressure sensor.
In conjunction with the present embodiment, there is a kind of preferred scheme, wherein, the described proportional relation according to being with steel exports speed and smoothing factor, calculates smoothing factor and is specially:
Obtain according to following formulae discovery:
Wherein, v
stripfor the actual muzzle velocity of band steel, v
minand v
maxbe respectively minimum of a value and the maximum of band steel exports speed, G
v, maxfor the maximum of the rate smoothing factor, G
v, max>1.0.
In conjunction with the present embodiment, there is a kind of preferred scheme, wherein, the radial force value after described calculating smoothing processing, is specially:
Obtain according to following formulae discovery:
Wherein, F
rA[A] [n-1] and F
rA[A] [n] represents the radial force value of the radial force value that the last timing node of measured zone A is measured and current time node measurement respectively.
Embodiment two
The present embodiment additionally provides a kind of contact plate shape roller measuring-signal Integrated Processing Unit, as shown in Figure 1, comprises plate shape roller 11, one or more pressure sensor 12 and processor, concrete:
On plate shape roller, 11 are provided with one or more pressure sensor 12, and by forming height potential difference mode, make band steel produce radial pressure (as shown in Figure 1) through described plate shape roller;
The radial pressure that described pressure sensor 12 produces for measuring tape steel;
Described processor (being placed in described server 10), for the proportional relation according to band steel exports speed and smoothing factor, calculates smoothing factor; The force value A1 measured at last timing node according to pressure sensor A, the force value A2 of current time node measurement and described smoothing factor, calculate the radial force value after smoothing processing; The pressure sensor B adjacent according to described pressure sensor about A and pressure sensor C, line of engagement sex factor, introduce described pressure sensor A, pressure sensor B and pressure sensor C in this timing node, the radial force value after smoothing processing, and calculate the radial load after linear process; According to the radial load after described linear process, calculate the radial load difference of each pressure sensor.
Preferably, described processor also for:
According to the radial load difference of each pressure sensor 12, adjustment working roll acts on the force value on band steel.
Preferably, described processor also for: according to the deformation error amount of plate shape roller, compensate the radial force value after described linear process, be compensated rear radial force value; According to the radial force value after described compensation deals, calculate the radial load difference of each pressure sensor.
Preferably, described processor also for: complete the radial force value after described compensation deals described in normalization; According to the radial force value after normalized, calculate the radial load difference of each pressure sensor.
Embodiment three
The embodiment of the present invention additionally provides a kind of specific implementation flow process of contact plate shape roller measuring-signal integrated conduct method, in the present embodiment, combine the various expansion implementation described in embodiment one and specific implementation means thereof, thus based on the most detailed angle, provide the method realizing embodiments of the invention.As shown in Figure 4, step is comprised:
In step S301, calculate smoothing factor according to band steel exports speed.
The rate smoothing factor is directly proportional with band steel exports speed, when band steel exports speed is at certain limit [v
min, v
max] in change time, the rate smoothing factor is also at certain limit [1.0, G
v, max] internal linear change, as shown in the formula:
In formula, v
stripfor the actual muzzle velocity of band steel, v
minand v
maxbe respectively minimum of a value and the maximum of band steel exports speed, G
v, maxfor the maximum of the rate smoothing factor, G
v, max>1.0.
In step S302, smoothly measure radial force value according to the rate smoothing factor.
According to the rate smoothing factor, to the smoothing computing of the radial force value of measurement, to obtain more level and smooth radial force value.The level and smooth rear radial force value of current time of measured zone m is calculated as follows formula:
In formula, F
rA[A] [n-1] and F
rA[A] [n] represents the radial force value of the radial force value that the last timing node of measured zone A (measured zone of pressure sensor A) is measured and current time node measurement respectively.The larger then smoothing factor of speed is larger, and the weight representing the radial force value that last timing node is measured is larger.
In step S303, measure radial force value along strip width dimension linear.
Consider the impact of adjacent measured zone on this measured zone measured value, with the radial force value of the measurement of following formula linearisation m measured zone:
In formula, sequence number B and C represents the adjacent measured zone of measured zone m, C
lfor the linearisation factor, 0.0<C
l<1.0, in the present embodiment, gets C
l=0.5.
Note two measured zone that steel edge portion covers, have the adjacent area of side not to be with steel to cover, therefore measure less than radial force value, these two edge measured zone cannot according to above-mentioned formula linearisation.So the linearisation operation of this step is only for the middle measured zone that band steel covers completely, do not comprise two measured zone that steel edge portion covers.
In step S304, the measure error that revision board shape roll forming alters.
Consider under strip tension effect, after plate shape roller is stressed, small deformation can occur, particularly the deformation of plate shape roller both sides edge can be comparatively obvious, the measure error altered with following formula compensating plate shape roll forming:
In formula, F
rA, cradial force value after the compensation of [A] [n] for measured zone A current time node, E
fL, maxfor the maximum plate shape error (E that plate shape roller deformation causes
fL, max>0, and appear at plate shape roller both sides edge measured zone, obtain at plate shape roller test phase), D
maxfor the ultimate range (distance namely between both sides edge measured zone and central point) of plate shape roller measured zone distance plate shape roller central point, C
modulefor being with the elastic modelling quantity of steel, a parameter of unit conversion between being worth for radial load and plate shape, D [A] represents that measured zone m is with the distance between plate shape roller central point.
i.e. plate shape roller deformation compensation rate.
As can be seen from this formula, the measured zone compensation rate in the middle part of plate shape roller is very little, and along with the distance of measured zone isocenter increases, compensation rate increases linearly.
In step S305, according to the radial force value of measured zone width AVHRR NDVI.
Consider that plate shape roller measured zone width is inconsistent, need according to the radial force value of the width AVHRR NDVI of measured zone:
In formula, W
maxfor measured zone Breadth Maximum, the width that W [A] is measured zone A.
In step S306, calculate the radial load difference of each measured zone.
Radial force value after width normalization deducts radial load mean value and obtains radial load difference:
This completes the integrated treatment work that plate shape roller measures radial force value, the radial load difference finally obtained can obtain actual plate shape Distribution Value through unit conversion.The harmful effect of the measuring process peripheral of measured value compensation after treatment interference, improves the precision of measuring-signal.
Those of ordinary skill in the art it is also understood that, the all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, comprises ROM/RAM, disk, CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a contact plate shape roller measuring-signal integrated conduct method, is characterized in that, comprising:
According to the proportional relation being with steel exports speed and smoothing factor, calculate smoothing factor;
The force value A1 measured at last timing node according to pressure sensor A, the force value A2 of current time node measurement and described smoothing factor, calculate the radial force value after smoothing processing;
The pressure sensor B adjacent according to described pressure sensor about A and pressure sensor C, line of engagement sex factor, introduce described pressure sensor A, pressure sensor B and pressure sensor C in this timing node, the radial force value after smoothing processing, and calculate the radial load after linear process;
According to the radial load after described linear process, calculate the radial load difference of each pressure sensor.
2. method according to claim 1, is characterized in that, described method also comprises:
According to the radial load difference of each pressure sensor, adjustment working roll acts on the force value on band steel.
3. method according to claim 1, is characterized in that, after completing described linear process, before calculating the radial load difference of described each pressure sensor, described method also comprises:
According to the deformation error amount of plate shape roller, compensate the radial force value after described linear process, be compensated rear radial force value;
Then described according to the radial load after described linear process, calculate the radial load difference of each pressure sensor, specifically comprise:
According to the radial force value after described compensation deals, calculate the radial load difference of each pressure sensor.
4. method according to claim 3, is characterized in that, after completing described compensation deals, before calculating the radial load difference of each pressure sensor, described method also comprises:
The radial force value after described compensation deals is completed described in normalization;
Then described according to the radial force value after described compensation deals, calculate the radial load difference of each pressure sensor, specifically comprise:
According to the radial force value after normalized, calculate the radial load difference of each pressure sensor.
5. according to the arbitrary described method of claim 1-3, it is characterized in that, the described proportional relation according to being with steel exports speed and smoothing factor, calculating smoothing factor and being specially:
Obtain according to following formulae discovery:
Wherein, v
stripfor the actual muzzle velocity of band steel, v
minand v
maxbe respectively minimum of a value and the maximum of band steel exports speed, G
v, maxfor the maximum of the rate smoothing factor, G
v, max>1.0.
6. method according to claim 4, is characterized in that, the radial force value after described calculating smoothing processing, is specially:
Obtain according to following formulae discovery:
Wherein, F
rA[A] [n-1] and F
rA[A] [n] represents the radial force value of the radial force value that the last timing node of measured zone A is measured and current time node measurement respectively.
7. a contact plate shape roller measuring-signal Integrated Processing Unit, is characterized in that, comprises plate shape roller, one or more pressure sensor and processor, concrete:
Plate shape roller is provided with one or more pressure sensor, and by forming height potential difference mode, makes band steel produce radial pressure through described plate shape roller;
Described pressure sensor is used for the radial pressure that measuring tape steel produces;
Described processor, for the proportional relation according to band steel exports speed and smoothing factor, calculates smoothing factor; The force value A1 measured at last timing node according to pressure sensor A, the force value A2 of current time node measurement and described smoothing factor, calculate the radial force value after smoothing processing; The pressure sensor B adjacent according to described pressure sensor about A and pressure sensor C, line of engagement sex factor, introduce described pressure sensor A, pressure sensor B and pressure sensor C in this timing node, the radial force value after smoothing processing, and calculate the radial load after linear process; According to the radial load after described linear process, calculate the radial load difference of each pressure sensor.
8. device according to claim 7, is characterized in that, described processor also for:
According to the radial load difference of each pressure sensor, adjustment working roll acts on the force value on band steel.
9. method according to claim 7, is characterized in that, described processor also for:
According to the deformation error amount of plate shape roller, compensate the radial force value after described linear process, be compensated rear radial force value; According to the radial force value after described compensation deals, calculate the radial load difference of each pressure sensor.
10. method according to claim 9, is characterized in that, described processor also for:
The radial force value after described compensation deals is completed described in normalization; According to the radial force value after normalized, calculate the radial load difference of each pressure sensor.
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| CN201510187124.XA CN104785545B (en) | 2015-04-20 | 2015-04-20 | Comprehensive measurement signal processing method and device for contact type plate-shaped roller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499282A (en) * | 2015-11-26 | 2016-04-20 | 首钢京唐钢铁联合有限责任公司 | Online plate shape analyzing method and device for cold-rolling strip steel |
| CN113333483A (en) * | 2021-05-25 | 2021-09-03 | 张家港扬子江冷轧板有限公司 | Compensation method for position error of sectional contact type plate-shaped roller |
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| CN103270401A (en) * | 2010-12-22 | 2013-08-28 | 基斯特勒控股公司 | Force sensor system and method for measuring forces of film strips or sheet metal strips during rolling |
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| CN113333483A (en) * | 2021-05-25 | 2021-09-03 | 张家港扬子江冷轧板有限公司 | Compensation method for position error of sectional contact type plate-shaped roller |
| CN113333483B (en) * | 2021-05-25 | 2022-08-19 | 张家港扬子江冷轧板有限公司 | Compensation method for position error of sectional contact type plate-shaped roller |
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