CN114264404B - Zeroing method of force transducer for structural strength test - Google Patents
Zeroing method of force transducer for structural strength test Download PDFInfo
- Publication number
- CN114264404B CN114264404B CN202111621484.8A CN202111621484A CN114264404B CN 114264404 B CN114264404 B CN 114264404B CN 202111621484 A CN202111621484 A CN 202111621484A CN 114264404 B CN114264404 B CN 114264404B
- Authority
- CN
- China
- Prior art keywords
- value
- force transducer
- zero
- load
- output
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012795 verification Methods 0.000 claims abstract description 10
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model belongs to the technical field of measurement and control, a zeroing method of force transducer for structural strength test, through utilizing force transducer and the direct connection of measured object, under the condition that does not exert loading force, the value that force transducer measured should be 0 value, to the condition that does not carry out zeroing, force transducer can appear the condition of leaning to the left or the right, according to the magnitude relation of output feedback to and theoretical load value, judge whether output feedback value is to drawing to or pressing to the load, reuse the zero point output error and the force transducer full scale in the sensor verification record table, can accurately calculate zero point output value, refill this zero point output value in force transducer zero point parameter Overall Offset, can carry out accurate zeroing, need not dismantle the measured object simultaneously, can accomplish zeroing on test equipment, thereby saving time, and improving work efficiency, reduced the dismantlement safety risk.
Description
Technical Field
The application belongs to the technical field of measurement and control, and particularly relates to a zeroing method of a force transducer for structural strength test.
Background
In the structural strength test, zeroing of the load cells used at each loading point is an indispensable process. The accuracy of the zero point adjustment is directly related to whether the load applied to each loading point is correct or not. The traditional zeroing method is that before the load cell of each loading point is not connected with the loading support clamp, the zero point adjustment of each loading point is completed by the coordination loading control system under the condition that the load cell is not loaded. The zeroing method has certain defects that in the test process, particularly in the fatigue test with relatively more loading points, when the loads of a plurality of loading points are abnormal or the stress of a structure is abnormal, the load of the loading points needs to be calibrated or detected, the load sensor of the loading points and the supporting clamp need to be disassembled, and then the zeroing is carried out according to the traditional method. The workload is greatly increased, the test progress is influenced, a certain safety risk is brought, and the safety risk is larger when the loading point is detached and aerial operation is needed.
Therefore, how to zero the load cell for structural strength test is a problem to be solved.
Disclosure of Invention
The utility model aims at providing a zeroing method of a force transducer for structural strength test to solve the inconvenient problem of force transducer zeroing among the test process among the prior art.
The technical scheme of the application is as follows: a zeroing method of a load cell for a structural strength test comprises the steps of connecting the load cell with a tested object, obtaining a theoretical value of a load borne by the load cell, and executing the next step if the load cell detects that the load is not consistent with the theoretical value of the load; setting a zero Offset parameter of a force transducer in the MOOG controller to 0, and obtaining an output feedback value of the force transducer; if the output feedback value is larger than the theoretical load value born by the force transducer, adding a negative sign to the absolute value of the zero point value in the force transducer verification record table as the zero point of the force transducer; if the output feedback value is smaller than the theoretical load value born by the force transducer, the absolute value of the pull-to-zero value in the force transducer verification record table is used as the force transducer zero point; and acquiring the calculated zero output value, and refilling the zero output value into the zero Offset parameter of the force transducer, so that the force transducer is zeroed.
Preferably, when the output feedback value is greater than the theoretical load value borne by the load cell, the calculation method of the zero-pressing output value is that the zero-pressing output value Z by = |z× F.S |× (-1); wherein Z is zero output error percentage, unit% F.S; F.S is the load cell full scale, in kN or N.
Preferably, when the output feedback value is smaller than the theoretical load value born by the load cell, the calculation method of the output value of the pull-to part is that the zero output value Z bl = |z× F.S |; wherein Z is zero output error percentage, unit% F.S; F.S is the load cell full scale, in kN or N.
According to the zeroing method of the force transducer for the structural strength test, the force transducer is directly connected with the measured object, under the condition that no loading force is applied, the measured value of the force transducer should be 0 value, under the condition that zeroing is not carried out, the force transducer can deviate left or right, whether the output feedback value is pulled to or pressed against the load is judged according to the magnitude relation between the output feedback value and the theoretical load value, the zero output error in the sensor verification record table and the full range of the force transducer are utilized, the zero output value can be accurately calculated, the zero output value is refilled into the zero parameter overtall Offset of the force transducer, accurate zeroing can be carried out, meanwhile, the measured object is not required to be disassembled, zeroing can be completed on test equipment, time is saved, working efficiency is improved, and the disassembly safety risk is reduced.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following description will briefly refer to the accompanying drawings. It will be apparent that the figures described below are only some embodiments of the present application.
FIG. 1 is a schematic overall flow chart of the present application;
FIG. 2 is a feedback plot of a load cell without zeroing in accordance with the present application;
FIG. 3 is a chart of load cell verification records of the present application;
FIG. 4 is a load cell zero parameter Overall Offset setting interface of the present application;
FIG. 5 is a feedback plot of the load cell after zeroing in accordance with the present application.
Detailed Description
In order to make the purposes, technical solutions and advantages of the implementation of the present application more clear, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application.
The zeroing method of the load cell for the structural strength test is shown in fig. 1, and comprises the following steps:
step S100, connecting a force transducer with a tested object, obtaining a theoretical value of a load borne by the force transducer, and if the load borne by the force transducer is not consistent with the theoretical value of the load borne by the force transducer, executing the next step; the zero setting is not carried out before the force transducer is connected with the measured object, if the output feedback value of the force transducer is not consistent with the theoretical value of the load, the zero point of the force transducer is not set, and therefore zero setting is needed; if the output feedback value of the load cell is the same as the load, the zero point of the load cell is set to be zero point, and zero setting is not needed at the moment.
Step S200, setting a zero Offset parameter of a force transducer in the MOOG controller to 0, and obtaining an output feedback value of the force transducer; the output feedback value of the force transducer has two conditions, one is in a state of setting zero point to the left, namely the zero point of the force transducer is smaller than the set zero point and is in a pulling state; one is to the right of the set zero point, i.e. the zero point of the load cell is greater than the set zero point and is in a pressed state.
Step S300, if the output feedback value is larger than the theoretical load value born by the force transducer, namely in a pressed state, adding a negative sign to the absolute value of the zero value of the pressure in the force transducer verification record table as the zero point of the force transducer; the pressing zero value is a positive value in the pressing state, the pressing zero value set by the force transducer can be used as the force transducer zero point by subtracting the pressing zero output value, and the specific calculation method is as follows:
zero output value Z by ＝|Z×F.S|×(－1)；
Wherein Z is zero output error percentage, unit% F.S; F.S is the full scale of the load cell, in kN or N, Z by I.e. the output value towards zero.
Step S400, if the output feedback value is smaller than the theoretical load value born by the force transducer, namely in a pull-to state, the absolute value of the pull-to zero value in the force transducer verification record table is used as the force transducer zero point; the pull-to zero value is a negative value in the pull-to state, the absolute value of the pull-to zero output value is added to the pull-to zero value set by the force transducer, and the force transducer zero can be accurately obtained, and the specific calculation method is as follows:
zero output value Z bl ＝|Z×F.S|；
Wherein Z is zero output error percentage, unit% F.S; F.S is the load cell full scale, in kN or N. Z is Z bl I.e. the pull-to zero output value.
And S500, acquiring the calculated zero output value, and refilling the zero output value into the zero Offset parameter of the force sensor, so that the force sensor is zeroed.
Through utilizing force transducer and the direct connection of the measured object, under the condition that does not exert the loading force, the value that force transducer measured should be 0 value, to the condition that does not carry out zeroing, force transducer can appear the condition of leaning to the left or right, according to the output feedback to the magnitude relation with theoretical load value, judge whether the output feedback value is to drawing to or pressing to the load, reuse sensor verification record table zero point output error and force transducer full scale, can accurately calculate the zero point output value, refill this zero point output value in force transducer zero point parameter overtall Offset, can carry out accurate zeroing, need not dismantle the measured object simultaneously, can accomplish zeroing on test equipment, time is saved, work efficiency is improved, the dismantlement security risk is reduced.
As a specific embodiment, a zeroing method of a load cell for structural strength test is described below with a specific example,
after a certain force transducer is connected to the control system in an un-zeroed state, a certain test piece with the weight of 78.3Kg is connected to the certain force transducer, so that the force transducer receives 767N of load (1 Kg approximately 9.8N). Since the sensor zero point is unknown, the feedback value of the sensor is not the real load value, so the correct zero point value is calculated according to the method.
(1) And opening a force transducer setting interface of the control system, and setting a zero parameter over Offset of the force transducer to be 0 to obtain a feedback value of the sensor, wherein the average value is 1020.61N as shown in FIG. 2.
(2) The average value is greater than 767N, and according to step 3, the query metering department provides the pressing zero output error Z of the load cell verification record table in the validity period, as shown in figure 3.
(3) Calculating zero output value Z by This value is input to the zero point position as shown in fig. 4.
Zero output value Z by ＝|Z×F.S|×(－1)＝500000×0.49％×(－1)＝－245。
(4) As shown in fig. 5, looking at the feedback curve of the zeroed load cell, the sensor feedback average is 774.13N.
(5) The feedback average value of the load cell is 774.13N, the load value 767N applied to the load cell by the test piece is 7.13N, and the absolute value of the error between the feedback average value and the load value is 7.13N. The accuracy of the load cell obtained by looking up FIG. 2 was rated at 0.1 according to the general Specification for pressure sensor (GJB 4409A-2011) accuracy rating, with a tolerance of + -0.1% F.S, i.e. + -50N. Obviously, the error 7.13N is within the allowable error range of the load cell, and the feedback value measured by the load cell is reliable and effective.
The method improves the traditional zeroing method of the force transducer, greatly reduces the disassembly workload, saves time, improves the working efficiency, reduces the safety risk caused by the secondary disassembly of the test piece, does not need any cost or fund investment, and truly realizes zero cost.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (1)
1. A zeroing method of a load cell for structural strength test is characterized in that: comprising the steps of (a) a step of,
connecting the force transducer with the tested object, obtaining the theoretical value of the load borne by the force transducer, and if the load borne by the force transducer is not consistent with the theoretical value of the load borne by the force transducer, executing the next step;
setting a zero Offset parameter of a force transducer in the MOOG controller to 0, and obtaining an output feedback value of the force transducer;
if the output feedback value is larger than the theoretical load value borne by the force transducer, calculating the absolute value of the pressed zero value plus a negative sign to serve as the zero point of the force transducer through the zero output error and the full range of the force transducer in the verification record table of the force transducer;
if the output feedback value is smaller than the theoretical load value borne by the force transducer, the force transducer is used for verifying zero output errors and the full range of the force transducer in the record table, and the absolute value of the pulled zero value is calculated as the zero point of the force transducer;
acquiring the calculated zero output value and refilling the zero output value into the zero Offset parameter of the force sensor, so that the force sensor is zeroed;
when the output feedback value is larger than the theoretical load value born by the load cell, the calculation method of the output value pressed towards the zero point is that,
zero output value Z by =|Z×F.S|×(－1)；
Wherein Z is zero output error percentage, unit% F.S; F.S is the full scale of the load cell, in kN or N;
when the output feedback value is smaller than the theoretical load value born by the load cell, the calculation method of the pull-to-zero output value is that,
zero output value Z bl =|Z×F.S|；
Wherein Z is zero output error percentage, unit% F.S; F.S is the load cell full scale, in kN or N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111621484.8A CN114264404B (en) | 2021-12-28 | 2021-12-28 | Zeroing method of force transducer for structural strength test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111621484.8A CN114264404B (en) | 2021-12-28 | 2021-12-28 | Zeroing method of force transducer for structural strength test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114264404A CN114264404A (en) | 2022-04-01 |
| CN114264404B true CN114264404B (en) | 2024-02-23 |
Family
ID=80831046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111621484.8A Active CN114264404B (en) | 2021-12-28 | 2021-12-28 | Zeroing method of force transducer for structural strength test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114264404B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114280940B (en) * | 2021-12-28 | 2024-08-13 | 中国航空工业集团公司西安飞机设计研究所 | Feedback amplification and linear optimization method for MOOG coordinated loading control system |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655406A (en) * | 2009-09-11 | 2010-02-24 | 中国铁道科学研究院机车车辆研究所 | Method and device for zero point calibration of gas pressure sensor |
| JP2012002587A (en) * | 2010-06-15 | 2012-01-05 | Yamato Scale Co Ltd | Failure diagnostic device for force or load detection sensor |
| CN102353489A (en) * | 2011-07-21 | 2012-02-15 | 凯迈(洛阳)机电有限公司 | Method for testing double-direction torque of eddy current dynamometer |
| CN103808452A (en) * | 2012-11-15 | 2014-05-21 | 台达电子工业股份有限公司 | Method and device for zero adjustment of electric power steering device |
| CN104034465A (en) * | 2014-07-01 | 2014-09-10 | 中国船舶重工集团公司第七○二研究所 | Force measurement mechanism in device for measuring blade rotating torque of single blade of controllable-pitch propeller |
| CN106530942A (en) * | 2016-12-26 | 2017-03-22 | 中国航空工业集团公司西安飞机设计研究所 | Zero automatic correction method for flight simulator control mechanism |
| CN206339330U (en) * | 2016-11-30 | 2017-07-18 | 北京航天计量测试技术研究所 | Zero passage continuous force calibrating device for sensors |
| CN108414185A (en) * | 2018-02-08 | 2018-08-17 | 上海机电工程研究所 | Symmetrical flight device wind tunnel test data zero point error processing method |
| CN207850594U (en) * | 2017-12-31 | 2018-09-11 | 交通运输部天津水运工程科学研究所 | Steel chord type anchor ergometer calibrating installation |
| CN108956006A (en) * | 2018-08-20 | 2018-12-07 | 云南省计量测试技术研究院 | Small value force measuring instrument rapid verification calibration system |
| CN208313504U (en) * | 2018-05-16 | 2019-01-01 | 格特拉克（江西）传动系统有限公司 | Force snesor calibrating apparatus |
| JP2019203692A (en) * | 2018-05-21 | 2019-11-28 | 株式会社クボタ | Scale inspection device and inspection method |
| CN112305416A (en) * | 2020-10-26 | 2021-02-02 | 深圳市信锐网科技术有限公司 | Zero calibration circuit, equipment, system, method, device and storage medium |
-
2021
- 2021-12-28 CN CN202111621484.8A patent/CN114264404B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655406A (en) * | 2009-09-11 | 2010-02-24 | 中国铁道科学研究院机车车辆研究所 | Method and device for zero point calibration of gas pressure sensor |
| JP2012002587A (en) * | 2010-06-15 | 2012-01-05 | Yamato Scale Co Ltd | Failure diagnostic device for force or load detection sensor |
| CN102353489A (en) * | 2011-07-21 | 2012-02-15 | 凯迈(洛阳)机电有限公司 | Method for testing double-direction torque of eddy current dynamometer |
| CN103808452A (en) * | 2012-11-15 | 2014-05-21 | 台达电子工业股份有限公司 | Method and device for zero adjustment of electric power steering device |
| CN104034465A (en) * | 2014-07-01 | 2014-09-10 | 中国船舶重工集团公司第七○二研究所 | Force measurement mechanism in device for measuring blade rotating torque of single blade of controllable-pitch propeller |
| CN206339330U (en) * | 2016-11-30 | 2017-07-18 | 北京航天计量测试技术研究所 | Zero passage continuous force calibrating device for sensors |
| CN106530942A (en) * | 2016-12-26 | 2017-03-22 | 中国航空工业集团公司西安飞机设计研究所 | Zero automatic correction method for flight simulator control mechanism |
| CN207850594U (en) * | 2017-12-31 | 2018-09-11 | 交通运输部天津水运工程科学研究所 | Steel chord type anchor ergometer calibrating installation |
| CN108414185A (en) * | 2018-02-08 | 2018-08-17 | 上海机电工程研究所 | Symmetrical flight device wind tunnel test data zero point error processing method |
| CN208313504U (en) * | 2018-05-16 | 2019-01-01 | 格特拉克（江西）传动系统有限公司 | Force snesor calibrating apparatus |
| JP2019203692A (en) * | 2018-05-21 | 2019-11-28 | 株式会社クボタ | Scale inspection device and inspection method |
| CN108956006A (en) * | 2018-08-20 | 2018-12-07 | 云南省计量测试技术研究院 | Small value force measuring instrument rapid verification calibration system |
| CN112305416A (en) * | 2020-10-26 | 2021-02-02 | 深圳市信锐网科技术有限公司 | Zero calibration circuit, equipment, system, method, device and storage medium |
Non-Patent Citations (6)
| Title |
|---|
| MTS 协调加载控制系统力传感器校准方法研究;赵婵;《工程与试验》;20180630;全文 * |
| 减小电阻应变式力敏传感器的零点漂移探讨;余长江;;安徽电子信息职业技术学院学报;20080220(第01期);全文 * |
| 基于LabVIEW的高精度转动惯量测控系统设计;蒿思哲;《测控技术》;20170731;全文 * |
| 测力传感器分路校准改进方法的校准误差研究;毛爽等;《工程与试验》;20200331;全文 * |
| 测力传感器的分路校准改进方法及应用;毛爽等;《工程与试验》;20190930;全文 * |
| 测力传感器的零点变化及测试分析;张伟等;《工程与试验》;20190930;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114264404A (en) | 2022-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114264404B (en) | Zeroing method of force transducer for structural strength test | |
| CN100487391C (en) | Weighting method of large cantilever structure | |
| CN112903235A (en) | Multi-element calibration method for thrust balance capable of completely simulating test state | |
| CN109580094B (en) | Fan generator set axis of rotation moment balance calibration system | |
| CN205138791U (en) | Gas turbine engine axial force test sensor confined state detection device | |
| CN207850594U (en) | Steel chord type anchor ergometer calibrating installation | |
| CN111537141B (en) | Calibration method of three-point support hydraulic dynamometer | |
| CN104596695A (en) | Loading device for accurately controlling rivet preload of riveting member | |
| CN203721826U (en) | Fuel cell pack capable of monitoring assembly force on line | |
| CN115674058A (en) | Ceramic matrix composite material high-pressure turbine guide vane assembly tool and assembly method | |
| CN109918842B (en) | Correction method for load of undercarriage applied by crow bar | |
| CN213956564U (en) | Digital weighing sensor calibration device | |
| CN102809470A (en) | Bending test method for ladder type frame assembly of heavy automobile | |
| CN200986498Y (en) | Safety valve online checking device | |
| CN114858613A (en) | Spring type concrete tensile creep device and testing method thereof | |
| CN110033593B (en) | Structure safety rapid early warning method for pre-jacking steel beam | |
| CN102706681A (en) | Bailey sheet detecting device and method | |
| CN110398306B (en) | Thermal power plant pipeline stress decoupling analysis system and analysis method | |
| CN110686632A (en) | Method for measuring initial geometric defects of H-shaped section steel compression bar | |
| CN105067364A (en) | Overall strength test method and device for wind driven generator | |
| CN110686820A (en) | Method for measuring and calculating force and moment for wheel alignment | |
| CN118243335B (en) | Calibrating device suitable for high-load wing part hinge moment balance | |
| CN116628803A (en) | Support and hanger design verification method, verification device, design method and design system | |
| CN221426296U (en) | Carrier vehicle frame test device | |
| CN106370426B (en) | A kind of determination method of air mass flow testing standard part limiting value |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |