CN113916441A - Calibration device and calibration method of force sensor - Google Patents
Calibration device and calibration method of force sensor Download PDFInfo
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- CN113916441A CN113916441A CN202010653800.9A CN202010653800A CN113916441A CN 113916441 A CN113916441 A CN 113916441A CN 202010653800 A CN202010653800 A CN 202010653800A CN 113916441 A CN113916441 A CN 113916441A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 15
- 238000005259 measurement Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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Abstract
The invention provides a calibration device and a calibration method of a force sensor, wherein the calibration device of the force sensor comprises an industrial personal computer, a driving motor, a mechanical loading device, a standard force sensor, a first display, a working force sensor and a data acquisition system; the industrial personal computer is electrically connected with the driving motor, the driving motor is in transmission connection with the mechanical loading device, and one end of the standard force sensor is fixedly connected to the mechanical loading device while the other end is connected with the working force sensor; the standard force sensor is electrically connected with the first display; the working force sensor is electrically connected with the data acquisition system. The invention does not need to repeatedly calibrate the working force sensor, thereby simplifying the working process and reducing the cost.
Description
Technical Field
The invention relates to the technical field of thrust measurement, in particular to a calibration device and a calibration method of a force sensor.
Background
The engine test and test technology is an important component of the solid propulsion technology, and the thrust vector eccentricity is an important parameter in the engine test and test. To study engine thrust vector eccentricity requires extensive trial and error tests that are not possible if all are run in flight. Therefore, an engine ground test run is required, which means that a static test is performed on the system according to specific environment and condition requirements on the ground to obtain index information describing various performances of the system, so as to solve the key problem in the thrust eccentricity test of the engine。At present, a multi-component force model and a multi-component force test bed are mainly adopted at home and abroad to measure the thrust vector, wherein a six-component force measuring method and a six-component force vector testing technology are commonly used, a movable frame needs to be connected with a fixed frame through a thrust assembly, and the number of related vector forces is detected through a working force sensor in the force measuring assemblyAccordingly. However, during the measurement process, in particular after a plurality of measurements, the accuracy of the working force sensor cannot be determined, which leads to a reduction in the test accuracy. The calibration method for the working force sensor in the prior art is not only complex in process, but also high in cost because the working force sensor needs to be calibrated once every time an experiment is carried out.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a calibration device and a calibration method of a force sensor.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a calibration device of a force sensor comprises an industrial personal computer, a driving motor, a mechanical loading device, a standard force sensor, a first display, a working force sensor and a data acquisition system;
the industrial personal computer is electrically connected with the driving motor, the driving motor is in transmission connection with the mechanical loading device, one end of the standard force sensor is fixedly connected to the mechanical loading device, and the other end of the standard force sensor is connected with the working force sensor;
the industrial personal computer controls the driving motor to work so that the driving motor can drive the mechanical loading device to apply acting force to the working force sensor through the standard force sensor;
the standard force sensor is electrically connected with the first display and used for displaying the magnitude of acting force applied to the working force sensor through the first display;
the working force sensor is electrically connected with the data acquisition system, so that the working force sensor can send corresponding information to the data acquisition system when bearing the acting force transmitted from the standard force sensor.
Preferably, the first display is electrically connected with the industrial personal computer and used for sending information of acting force applied to the working force sensor to the industrial personal computer, and the industrial personal computer can control the driving motor to work according to the information.
Preferably, a second display is also included;
the second display is electrically connected with the industrial personal computer, and when the industrial personal computer receives the information from the first display, the information can be displayed through the second display.
Preferably, the mechanical loading device comprises a screw and a nut matched with the screw, the nut is relatively fixed to the working force sensor, the screw is arranged in the nut in a penetrating mode, one end of the screw is in transmission connection with the driving motor, and the other end of the screw is fixedly connected with the standard sensor.
A calibration method of a working force sensor,
a calibration device using the force sensor of claim 2;
s1, in-situ calibration: the industrial personal computer controls the driving motor to work, the driving motor drives the standard force sensor to generate displacement through the mechanical loading device, when the first display receives that the standard force sensor reaches the original position, information is sent to the industrial personal computer, and the industrial personal computer controls the driving motor to stop working;
s2, applying and unloading a loading force to the working force sensor by the mechanical loading device;
s3, repeating the step S2 at least three times;
and S4, drawing characteristic graphs of the standard force sensor and the working force sensor.
Preferably, step S2 includes a compressing step: the industrial personal computer controls the driving motor to work, so that the driving motor drives the standard force sensor to move towards the working force sensor through the mechanical loading device.
Preferably, the standard force sensor is fixedly connected with the working force sensor;
step S2 includes a tightening step: the industrial personal computer controls the driving motor to work, so that the driving motor drives the standard force sensor to move towards the direction far away from the working force sensor through the mechanical loading device.
Compared with the prior art, the invention has the advantages that:
the calibration device and the calibration method of the force sensor adopt the static calibration of the test system, the device generates a group of high-precision known simulation thrust to carry out the calibration on the test system, and the device reproduces the deformation and stress conditions of the test state, thereby eliminating the system errors caused by the deformation, installation, temperature, constraint and the like generated during the test, and further reducing the uncertainty of the thrust measurement. Meanwhile, by drawing the characteristic curve graphs of the standard force sensor and the working force sensor, the force value output by the working force sensor is really displayed through the characteristic curve graph without repeatedly calibrating the working force sensor, thereby simplifying the working process and reducing the cost,
drawings
FIG. 1 is a schematic diagram of a calibration apparatus for a force sensor according to an embodiment;
FIG. 2 is a flowchart of the calibration method according to the second embodiment.
Wherein: 1. an industrial personal computer; 2. a drive motor; 3. a mechanical loading device; 4. a standard force sensor; 5. a working force sensor; 6. a data acquisition system; 7. a first display; 8. a second display.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the mobile working chair of the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
As shown in fig. 1, a calibration device for a force sensor includes an industrial personal computer 1, a driving motor 2, a mechanical loading device 3, a standard force sensor 4, a first display 7, a working force sensor 5, and a data acquisition system 6. The industrial personal computer 1 is electrically connected with the driving motor 2, the driving motor 2 is in transmission connection with the mechanical loading device 3, and one end of the standard force sensor 4 is fixedly connected to the mechanical loading device 3, and the other end of the standard force sensor is connected with the working force sensor 5. The industrial personal computer 1 controls the driving motor 2 to work, so that the driving motor 2 can drive the mechanical loading device 3 to apply acting force to the working force sensor 5 through the standard force sensor 4, and the driving motor 2 can select a speed regulating motor. The standard force sensor 4 is electrically connected with the first display 7 to display the magnitude of the acting force applied to the working force sensor 5 through the first display 7 and generate a characteristic curve chart of the standard force sensor 5, and specifically, the first display 7 can adopt a 2000 digital display meter. The working force sensor 5 is electrically connected with the data acquisition system 6, so that when the working force sensor 5 bears the acting force transmitted from the standard force sensor 4, corresponding information can be sent to the data acquisition system 6, and a characteristic curve chart of the working force sensor 5 is generated in the data acquisition system 6.
Further, as shown in fig. 1, the first display 7 is electrically connected to the industrial personal computer 1, so as to send information of acting force applied to the working force sensor 5 to the industrial personal computer 1, and the industrial personal computer 1 can control the driving motor 2 to work according to the information.
More preferably, as shown in fig. 1, a second display 8 is also included; the second display 8 is electrically connected with the industrial personal computer 1, and when the industrial personal computer 1 receives the information from the first display 7, the information can be displayed through the second display 8. In this way, the operator can manually control the industrial personal computer 1 by observing the second display 8.
As an implementation manner, the mechanical loading device 3 includes a screw (shown in the figure) and a nut (shown in the figure) matched with the screw, the position of the nut is fixed relative to the working force sensor 5, the screw is arranged in the nut in a penetrating way, and one end of the screw is in transmission connection with the driving motor 2, and the other end of the screw is in fixed connection with the standard sensor. In this way, the driving motor 2 can drive the screw to rotate to realize the screwing-in and screwing-out of the screw in the nut, and further realize the loading or unloading of the working force sensor 5. It should be noted that the specific manner of the mechanical loading device is not limited to this, and any other manner that can achieve the object of the invention may be adopted.
Example two
As shown in fig. 2, a calibration method of a working force sensor,
a calibration device using the force sensor of claim 2;
s1, in-situ calibration: the industrial personal computer controls the driving motor to work, the driving motor drives the standard force sensor to generate displacement through the mechanical loading device, when the first display receives that the standard force sensor reaches the original position, information is sent to the industrial personal computer, and the industrial personal computer controls the driving motor to stop working;
s2, applying and unloading a loading force to the working force sensor by the mechanical loading device;
s3, repeating the step S2 at least three times;
and S4, drawing characteristic graphs of the standard force sensor and the working force sensor.
During actual calibration, the step S2 needs to be carried out by loading and unloading in multiple stages, for example, for calibrating a sensor with 10kN, setting calibration points in the sequence of 0-2kN-4kN-6kN-8kN-10kN-8kN-6kN-4kN-2kN-0, then repeating the step S3 for 3 times, and finally analyzing data to obtain the characteristics of the working force sensor.
Specifically, step S2 includes a pressing step: the industrial personal computer controls the driving motor to work, so that the driving motor drives the standard force sensor to move towards the working force sensor through the mechanical loading device. Therefore, the standard force sensor can be driven to apply pressure to the working force sensor through the mechanical loading device, and the pressure born by the working force sensor can be calibrated.
Preferably, the standard force sensor is fixedly connected with the working force sensor;
step S2 includes a tightening step: the industrial personal computer controls the driving motor to work, so that the driving motor drives the standard force sensor to move towards the direction far away from the working force sensor through the mechanical loading device. Therefore, the standard force sensor can be driven by the mechanical loading device to apply tension to the working force sensor, and the borne tension of the working force sensor can be calibrated.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A calibration device for a force sensor, comprising:
the device comprises an industrial personal computer, a driving motor, a mechanical loading device, a standard force sensor, a first display, a working force sensor and a data acquisition system;
the industrial personal computer is electrically connected with the driving motor, the driving motor is in transmission connection with the mechanical loading device, one end of the standard force sensor is fixedly connected to the mechanical loading device, and the other end of the standard force sensor is connected with the working force sensor;
the industrial personal computer controls the driving motor to work so that the driving motor can drive the mechanical loading device to apply acting force to the working force sensor through the standard force sensor;
the standard force sensor is electrically connected with the first display and used for displaying the magnitude of acting force applied to the working force sensor through the first display;
the working force sensor is electrically connected with the data acquisition system, so that the working force sensor can send corresponding information to the data acquisition system when bearing the acting force transmitted from the standard force sensor.
2. The calibration device for a force sensor according to claim 1, wherein:
the first display is electrically connected with the industrial personal computer and used for sending information of acting force applied to the working force sensor to the industrial personal computer, and the industrial personal computer can control the driving motor to work according to the information.
3. The calibration device for a force sensor according to claim 2, wherein:
a second display is also included;
the second display is electrically connected with the industrial personal computer, and when the industrial personal computer receives the information from the first display, the information can be displayed through the second display.
4. The calibration device of a force sensor according to any one of claims 1 to 3, wherein:
the mechanical loading device comprises a screw and a nut matched with the screw, the nut is relatively fixed with the working force sensor, the screw is arranged in the nut in a penetrating mode, one end of the screw is in transmission connection with the driving motor, and the other end of the screw is fixedly connected with the standard sensor.
5. A calibration method of a working force sensor is characterized in that:
a calibration device using the force sensor of claim 2;
s1, in-situ calibration: the industrial personal computer controls the driving motor to work, the driving motor drives the standard force sensor to generate displacement through the mechanical loading device, when the first display receives that the standard force sensor reaches the original position, information is sent to the industrial personal computer, and the industrial personal computer controls the driving motor to stop working;
s2, applying and unloading a loading force to the working force sensor by the mechanical loading device;
s3, repeating the step S2 at least three times;
and S4, drawing characteristic graphs of the standard force sensor and the working force sensor.
6. The calibration method of the working force sensor according to claim 5, wherein:
step S2 includes a pressing step: the industrial personal computer controls the driving motor to work, so that the driving motor drives the standard force sensor to move towards the working force sensor through the mechanical loading device.
7. The calibration method of the working force sensor according to claim 5, wherein:
the standard force sensor is fixedly connected with the working force sensor;
step S2 includes a tightening step: the industrial personal computer controls the driving motor to work, so that the driving motor drives the standard force sensor to move towards the direction far away from the working force sensor through the mechanical loading device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010653800.9A CN113916441A (en) | 2020-07-08 | 2020-07-08 | Calibration device and calibration method of force sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010653800.9A CN113916441A (en) | 2020-07-08 | 2020-07-08 | Calibration device and calibration method of force sensor |
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Citations (8)
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|---|---|---|---|---|
| US4620436A (en) * | 1984-10-09 | 1986-11-04 | Hitachi, Ltd. | Method and apparatus for calibrating transformation matrix of force sensor |
| CN202350981U (en) * | 2011-11-28 | 2012-07-25 | 周长明 | Force standard machine based on microcomputer control and piezoelectric precision tracking fine tuning technology |
| CN202547863U (en) * | 2012-03-16 | 2012-11-21 | 李宜伦 | High-precision dynamic calibration calibrating apparatus for force sensor |
| CN104515684A (en) * | 2014-12-12 | 2015-04-15 | 北京瑞赛长城航空测控技术有限公司 | In-situ calibrating device with loaded direct-current torque motor and loaded driving ball screw assembly |
| CN105784266A (en) * | 2016-03-03 | 2016-07-20 | 上海精密计量测试研究所 | Docking mechanism test system six-component force on-line calibration method |
| CN205538092U (en) * | 2015-12-09 | 2016-08-31 | 上海精密计量测试研究所 | On --spot calibrating device of measuring equipment that measured one's own ability in six minutes |
| CN108931335A (en) * | 2018-10-01 | 2018-12-04 | 北京航天三发高科技有限公司 | A kind of force snesor calibrating installation and its scaling method |
| CN110763397A (en) * | 2019-11-22 | 2020-02-07 | 北京航天三发高科技有限公司 | Calibration method and device for engine test bed thrust measurement sensor |
-
2020
- 2020-07-08 CN CN202010653800.9A patent/CN113916441A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620436A (en) * | 1984-10-09 | 1986-11-04 | Hitachi, Ltd. | Method and apparatus for calibrating transformation matrix of force sensor |
| CN202350981U (en) * | 2011-11-28 | 2012-07-25 | 周长明 | Force standard machine based on microcomputer control and piezoelectric precision tracking fine tuning technology |
| CN202547863U (en) * | 2012-03-16 | 2012-11-21 | 李宜伦 | High-precision dynamic calibration calibrating apparatus for force sensor |
| CN104515684A (en) * | 2014-12-12 | 2015-04-15 | 北京瑞赛长城航空测控技术有限公司 | In-situ calibrating device with loaded direct-current torque motor and loaded driving ball screw assembly |
| CN205538092U (en) * | 2015-12-09 | 2016-08-31 | 上海精密计量测试研究所 | On --spot calibrating device of measuring equipment that measured one's own ability in six minutes |
| CN105784266A (en) * | 2016-03-03 | 2016-07-20 | 上海精密计量测试研究所 | Docking mechanism test system six-component force on-line calibration method |
| CN108931335A (en) * | 2018-10-01 | 2018-12-04 | 北京航天三发高科技有限公司 | A kind of force snesor calibrating installation and its scaling method |
| CN110763397A (en) * | 2019-11-22 | 2020-02-07 | 北京航天三发高科技有限公司 | Calibration method and device for engine test bed thrust measurement sensor |
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Application publication date: 20220111 |