CN102928148A - Method for correcting tension measurement value - Google Patents
Method for correcting tension measurement value Download PDFInfo
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- CN102928148A CN102928148A CN201210403189XA CN201210403189A CN102928148A CN 102928148 A CN102928148 A CN 102928148A CN 201210403189X A CN201210403189X A CN 201210403189XA CN 201210403189 A CN201210403189 A CN 201210403189A CN 102928148 A CN102928148 A CN 102928148A
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- Prior art keywords
- tension
- value
- force
- roller
- friction force
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- 238000005259 measurement Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 10
- 238000004364 calculation method Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 20
- 238000002715 modification method Methods 0.000 claims description 10
- 230000001939 inductive effect Effects 0.000 claims description 8
- 230000006698 induction Effects 0.000 abstract 2
- 239000011888 foil Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a method for correcting a tension measurement value. The correction method comprises the following steps of: (1) parallelly mounting two tension sensors on a sensor base, wherein the two tension sensors are connected in series; and (2) allowing force on a plate or a wire to pass through tension induction components through tension measuring rollers of the tension sensors, obtaining force Fa and Fb of the two tension induction components, and correcting and calculating to obtain the current tension value F, wherein F is equal to Fb+(Fb-Fa)/2. By the method, the influence of friction force can be automatically eliminated through measurement and calculation, and an accurate tension value is obtained.
Description
Technical field
The present invention relates to a kind of measured value modification method of tension pick-up.
Background technology
Tension pick-up also is tension detector, in the tension force control procedure, be used for measuring the instrument of wire rod or strap tension value size variation, for foil gauge type tension pick-up commonly used, its tensile strain sheet and compressive strain sheet link together according to the electric bridge mode, the resistance value of foil gauge also changes thereupon when being subject to external pressure, the size that how much will be proportional to suffered tension force of change value.
The development of tension pick-up is very ripe, and the model of tension pick-up and installation form also divide multiple.Because tension pick-up is indirectly to measure tension value by the form of compressive strain sheet, so, obtain the value of thrust on wire rod or the band, usually form certain cornerite by jockey pulley and a survey roller, exert pressure by surveying a roller, make the tension pick-up sensitive element produce displacement or distortion, tension pick-up can calculate the value of thrust that will measure by the built-in signal processor again according to the variation of foil gauge resistance value.
The tension pick-up of existing maturation, band or wire rod only need just lay out by jockey pulley and a survey roller can measure value of thrust.But the measured value of tension pick-up is indirectly to obtain by acting on the force value that side opens on the roller, the numerical value that calculates by measurement is so opened the value of thrust of roller two ends band or wire rod for survey, by after the jockey pulley, because the impact of friction force, its tension value can change again for band or wire rod.The tension value that sensor measurement out shows is F
N1, the pulling force of then surveying roller one an end stay cord is F
N1, stay cord is walked around after the jockey pulley, carries out force analysis for jockey pulley, and the friction force of setting between stay cord and the jockey pulley is f, so according to the equilibrium of forces principle terminal value of thrust F that can obtain restricting
N2=F
N1+ f.When wire rod or band moved by pulling force sensor, f was the power of a change, and the direction of friction force f is relevant with the relative displacement between rope and the jockey pulley, and sensor can't carry out by the built-in signal processor elimination of friction force.
Although adopt the mode of lubricating bearings to reduce friction by improving between jockey pulley surface working precision, jockey pulley and the sensor base, but, for shaggy material to be measured, perhaps with the great strip material of jockey pulley contact area, the impact of friction force is far longer than the impact of end bearing self friction resistance, and measurement result is exerted an influence, and is same, for the tension control system of some superhigh precisions, existing tonometry method can not satisfy the requirement of its precision.
Summary of the invention
In order to overcome the existing deficiency that measurement value sensor is affected by friction force, precision is lower, the invention provides a kind of modification method of tension measurements, can automatically eliminate the impact of friction force by measurements and calculations, obtain more accurate tension value.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of modification method of tension measurements, described modification method may further comprise the steps:
(1) two tension pick-ups is installed on the sensor base side by side described two tension pick-ups series connection;
(2) power on sheet material or the wire rod is opened roller by the survey of tension pick-up and is passed two power F that the tension force inductive component obtains to the tension force inductive component
a, F
b, corrected Calculation obtains current tension value F:F=F
b+ (F
b-F
a)/2.
Beneficial effect of the present invention is: can automatically eliminate the impact of friction force by measurements and calculations, obtain more accurate tension value.
Description of drawings
Fig. 1 is the schematic diagram of composite set of the modification method of tension measurements.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1, a kind of modification method of tension measurements, described modification method may further comprise the steps:
(1) two tension pick-ups 1,2 is installed on the sensor base side by side described two tension pick-ups series connection;
(2) power on sheet material or the wire rod is opened roller by the survey of tension pick-up and is passed two power F that the tension force inductive component obtains to the tension force inductive component
a, F
b, corrected Calculation obtains current tension value F:F=F
b+ (F
b-F
a)/2.
In the present embodiment, realized that based on the mentioned strain sensor device tension pick-up that can eliminate the friction force impact obtains the accurately measuring method of tension value, comprises following steps:
(1), obtains surveying the big or small F of a roller upward pressure according to the variation of foil gauge resistance value
N
Power on sheet material or the wire rod passes to the tension force inductive component of axle head by surveying a roller, according to the measuring principle of existing sensor, sheet material or wire rod are to surveying the pressure size F of a roller
NBe proportional to the resistance value of foil gauge, the variation by resistance value just can draw sheet material or band and act on the size of surveying a roller upward pressure value.
(2), by force value F
NObtain surveying the big or small sheet material of a roller side plate material or band upper pulling force value or band when surveying roller, and to survey angle between the roller be a constant definite value, F
NFor the tension force at sheet material or band two ends is opened the component that roller directly makes progress in survey.So pass through F
NCan calculate the size of surveying tension force on roller one an end plate material or the band with the angle value.In the computation process, the pulling force that side is opened roller two ends stay cord equates, does not in fact consider the impact of friction force, is a mean value through the value of thrust that measures.And with respect to friction force, what the value of thrust of stay cord will be large is many.Such as Fig. 1, we make F
a=F
2, F
b=F
4, F
a, F
bFor sensor passes through F
NThe tension value of the stay cord that calculates with the angle value.
(3), utilizing two groups of tension force inductive components to obtain sheet material or wire rod and survey opens friction force size between roller and the jockey pulley, eliminate friction force again in the result, obtain accurate tension value.
When wire rod or band were opened roller and jockey pulley by surveying, the size and Orientation of its friction force f was relevant with pulling force size, surfaceness, direction of motion, material on the material to be measured.Therefore, surveying under the identical prerequisite of a roller and jockey pulley diameter and material, surfaceness, can think that the friction force f that band and wire rod and single survey are opened between roller or the jockey pulley is similar to identical.
We pass two sensors as example take stay cord, such as Fig. 1, and F ＇, F
1, F
2, F
3, F
4, F
5, F is the pulling force on this section rope, the F end is measuring junction, F
a, F
bBe the tension measurements on sensor a, the b, S, N are two direction of motion of stay cord.
1, when stay cord moves along the S direction.The direction of friction force f is opposite with stay cord direction of motion.
F
a = F
2 F
b = F
5
The direction of f is opposite with the direction of motion of material to be measured therefore
F
1= F＇+f F
2= F
1+f F
3= F
2+f F
4= F
3+f F
5= F
4+f F= F
5+f
Can get F by following formula
2=F ＇+2f
F
5= F
2+3f= F＇+5f
So F
5-F
2=3f
f= (F
5- F
2)/3
F
a, F
bBe known quantity, so obtain friction force f=(F by following formula
b-F
a)/3
When material to be measured moved along the direction of S, the value of thrust of output accurately was F=F
5+ f=F
b+ f
Be F=F
b+ (F
b-F
a)/3
2, when the stay cord counter motion, when namely stay cord moved along the N direction, friction force was opposite with stay cord direction of motion all the time, and F is measuring junction.
F
a= F
2 F
b= F
5
The direction of f is opposite with the direction of motion of material to be measured therefore
F
5=F+f F
4= F
5+f F
3= F
4+f F
2= F
3+f F
1= F
2+f F＇= F
1+f
Can get F by following formula
5=F+f
F
2= F
5+3f=F+4f
So F
2-F
5=3f
f= (F
2-F
5)/3
F
a, F
bBe known quantity, so obtain friction force f=(F by following formula
a-F
b)/3
When material to be measured moved along the direction of S, the value of thrust of output accurately was F=F
5-f=F
b-f
Be F=F
b-(F
a-F
b)/3=F
b+ (F
b-F
a)/3
By 1,2 as can be known, no matter stay cord is toward which direction motion, and measured value comes to the same thing.
3, when stay cord is static, and there is static friction between jockey pulley and the survey roller.By 1,2 as can be known, the result of measurement is only relevant with sensor a, b measured value.Be F=F
b+ (F
b-F
a)/3.
The signal F that two sensors is measured
a, F
b, flowing to outside signal controller, the controller internal encoder can be eliminated the impact of friction force by above-mentioned calculating, export accurate tension value.
The method that the present invention adopts is to utilize two groups of tension pick-up series connection, utilize the measured value of two sensors, by signal controller, calculate side and open friction force between roller and band or the wire rod, finally in the result, eliminate the impact of friction force, obtain the method for more accurate tension value.
Claims (1)
- But 1. the modification method of a tension measurements, it is characterized in that: described modification method may further comprise the steps:(1) two tension pick-ups is installed on the sensor base side by side described two tension pick-ups series connection;(2) power on sheet material or the wire rod is opened roller by the survey of tension pick-up and is passed two power F that the tension force inductive component obtains to the tension force inductive component a, F b, corrected Calculation obtains current tension value F:F=F b+ (F b-F a)/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210403189.XA CN102928148B (en) | 2012-10-22 | 2012-10-22 | A kind of modification method of tension measurements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210403189.XA CN102928148B (en) | 2012-10-22 | 2012-10-22 | A kind of modification method of tension measurements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102928148A true CN102928148A (en) | 2013-02-13 |
| CN102928148B CN102928148B (en) | 2015-08-05 |
Family
ID=47643003
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210403189.XA Expired - Fee Related CN102928148B (en) | 2012-10-22 | 2012-10-22 | A kind of modification method of tension measurements |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790840A (en) * | 2021-09-13 | 2021-12-14 | 苏州创易技研股份有限公司 | Method for automatically keeping tension data of set tensioner stable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2747299B1 (en) * | 1977-10-21 | 1979-03-08 | Hoechst Ag | Method and device for monitoring the evenness of the tensile stress acting on a moving sheet of insulating material |
| US20030019970A1 (en) * | 2000-09-20 | 2003-01-30 | Georg Sahm Gmbh & Co. Kg. | Winding machine |
| CN101201281A (en) * | 2006-12-12 | 2008-06-18 | Abb有限公司 | Method and system in connection with tension measurement of material web |
| CN202119570U (en) * | 2011-05-23 | 2012-01-18 | 蚌埠天光传感器有限公司 | Pulley type tension sensor |
-
2012
- 2012-10-22 CN CN201210403189.XA patent/CN102928148B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2747299B1 (en) * | 1977-10-21 | 1979-03-08 | Hoechst Ag | Method and device for monitoring the evenness of the tensile stress acting on a moving sheet of insulating material |
| US20030019970A1 (en) * | 2000-09-20 | 2003-01-30 | Georg Sahm Gmbh & Co. Kg. | Winding machine |
| CN101201281A (en) * | 2006-12-12 | 2008-06-18 | Abb有限公司 | Method and system in connection with tension measurement of material web |
| CN202119570U (en) * | 2011-05-23 | 2012-01-18 | 蚌埠天光传感器有限公司 | Pulley type tension sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790840A (en) * | 2021-09-13 | 2021-12-14 | 苏州创易技研股份有限公司 | Method for automatically keeping tension data of set tensioner stable |
| CN113790840B (en) * | 2021-09-13 | 2024-02-09 | 苏州创易技研股份有限公司 | Method for automatically keeping tension data of set tension device stable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102928148B (en) | 2015-08-05 |
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Effective date of registration: 20171212 Address after: 313000 Zhejiang Province, Huzhou city Wuxing District Road No. 1188 district headquarters free port B building 14 Building 1403 room Patentee after: Zhejiang creation Intellectual Property Service Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310014 City Zhaohui District Six Patentee before: Zhejiang University of Technology |
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| TR01 | Transfer of patent right |
Effective date of registration: 20191125 Address after: 215100 1 Wuzhong Road, Yuexi street, Wuzhong Economic Development Zone, Suzhou, Jiangsu, China, 1368 Patentee after: Suzhou Wei you Intellectual Property Operation Co.,Ltd. Address before: 313000 Room 1403, 14th Floor, Building B, Freeport, Headquarters 1188 District Fulu Road, Wuxing District, Huzhou City, Zhejiang Province Patentee before: Zhejiang creation Intellectual Property Service Co.,Ltd. |
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Granted publication date: 20150805 |