CN112880728A - High-precision position sensor testing device - Google Patents
High-precision position sensor testing device Download PDFInfo
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- CN112880728A CN112880728A CN202110306561.4A CN202110306561A CN112880728A CN 112880728 A CN112880728 A CN 112880728A CN 202110306561 A CN202110306561 A CN 202110306561A CN 112880728 A CN112880728 A CN 112880728A
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- position sensor
- platform
- sensor testing
- moving
- high accuracy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a high-precision position sensor testing device, and relates to the field of sensor testing. This high accuracy position sensor testing arrangement is including being surveyed a fixed part, is surveyed a fixed part and includes that lift platform and elbow press from both sides, and the elbow presss from both sides the setting at lift platform's top, and lift platform's bottom is provided with the installation base. According to the high-precision position sensor testing device, a moving part of a tested piece axially moves on a tested micro head on a motion platform, the positioning precision is 0.0001mm, a signal generator supplies power to the position sensor and generates an excitation signal, an acquisition card acquires the excitation signal and a sensor output signal, an industrial personal computer performs modulation and demodulation processing on the signal acquired by the acquisition card and generates a testing curve, and meanwhile dead zone voltage, linearity and sensitivity indexes are calculated.
Description
Technical Field
The invention relates to the technical field of sensor testing, in particular to a high-precision position sensor testing device.
Background
The method is mainly applied to the performance test of high-precision position sensors, such as linear Hall position sensors, LVDT position sensors, magnetostrictive position sensors and the like, and the position positioning precision is 0.0001 mm.
The high-precision position sensor such as LVDT is widely applied in the fields of automatic machinery, high-end hydraulic proportional valves and servo valves, at present, the LVDT depends on import, the performances of domestic similar imitations are different from those of import parts, and how to carry out high-precision test and find the difference needs a high-precision position sensor testing device.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention discloses a high-precision position sensor testing device, which aims to solve the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a high precision position sensor testing apparatus comprising;
the device comprises a tested piece fixing part, a positioning part and a positioning part, wherein the tested piece fixing part comprises a lifting platform and an elbow clamp, the elbow clamp is arranged at the top of the lifting platform, and a mounting base is arranged at the bottom of the lifting platform;
the device comprises a tested part moving part, a test part moving part and a test part, wherein the tested part moving part comprises a clamping piston, a micrometer head, a moving platform and a stepping motor, a bearing of the moving platform is connected with a ball screw, the end part of the ball screw is fixedly connected with the output end of the stepping motor, the micrometer head is arranged on one side of the moving platform, and the micrometer head and the clamping piston are axially arranged through a bolt rod;
the industrial personal computer, the acquisition card and the signal generator are electrically connected and controlled with the corresponding lifting platform, the micrometer head and the stepping motor.
Preferably, the motion part of the tested piece can axially slide on the motion platform and is driven by the test micro head to move.
Preferably, the motion platform is slidably disposed on an upper surface of the mounting base.
Preferably, the lifting platform is used for adjusting the relative position of the fixed part of the measured piece relative to the moving part of the measured piece.
Preferably, the section of the motion platform is U-shaped.
The invention discloses a high-precision position sensor testing device, which has the following beneficial effects:
according to the high-precision position sensor testing device, a moving part of a tested piece axially moves on a tested micro head on a motion platform, the positioning precision is 0.0001mm, a signal generator supplies power to the position sensor and generates an excitation signal, an acquisition card acquires the excitation signal and a sensor output signal, an industrial personal computer performs modulation and demodulation processing on the signal acquired by the acquisition card and generates a testing curve, and meanwhile dead zone voltage, linearity and sensitivity indexes are calculated.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a second schematic structural diagram of the present invention;
fig. 3 shows the structural frame body of the present invention.
In the figure: 1. a lifting platform; 2. an elbow clip; 3. a fixed part of the tested piece; 4. a moving part of the measured piece; 5. clamping the piston; 6. a micrometer head; 7. a motion platform; 8. installing a base; 9. a ball screw; 10. a stepping motor; 11. industrial personal computer + acquisition card + signal generator.
Detailed Description
The embodiment of the invention discloses a high-precision position sensor testing device, which comprises a tested part fixing part 3, wherein the tested part fixing part 3 comprises a lifting platform 1 and an elbow clamp 2, the elbow clamp 2 is arranged at the top of the lifting platform 1, the lifting platform 1 is used for adjusting the relative position of the tested part fixing part 3 relative to a tested part moving part 4, and the bottom of the lifting platform 1 is provided with a mounting base 8;
the device comprises a tested part moving part 4, wherein the tested part moving part 4 comprises a clamping piston 5, a micrometer head 6, a moving platform 7 and a stepping motor 10, a bearing of the moving platform 7 is connected with a ball screw 9, the end part of the ball screw 9 is fixedly connected with the output end of the stepping motor 10, the micrometer head 6 is arranged on one side of the moving platform 7, the cross section of the moving platform 7 is U-shaped, the micrometer head 6 and the clamping piston 5 are axially arranged through a bolt rod, the tested part moving part 4 can axially slide on the moving platform 7 and is driven by the micrometer head 6 to move, and the moving platform 7 is slidably arranged on the upper surface of an installation base 8;
the industrial personal computer + the acquisition card + the signal generator 11, and the industrial personal computer + the acquisition card + the signal generator 11 are electrically connected and controlled with the corresponding lifting platform 1, the micrometer head 6 and the stepping motor 10.
The working principle is as follows: the lifting platform 1 can finely adjust the clamping tool arranged on the lifting platform in the X, Y and Z directions so as to adapt to the measurement of position sensors with various sizes, and the elbow clamp 2 on the clamping tool is used for fixing a fixed part 3 of a measured part;
the stepping motor 10 is arranged at the position of the motion platform 7 according to the instruction signal so as to adapt to the measured piece with different axial sizes and the positioning accuracy is 0.1mm, the motion part of the measured piece moves axially on the motion platform 7 by the measured micrometer head 6, the positioning accuracy is 0.0001mm, the signal generator supplies power to the position sensor and generates an excitation signal, the acquisition card acquires the excitation signal and the output signal of the sensor, the industrial personal computer carries out modulation and demodulation processing on the signal acquired by the acquisition card and generates a test curve, and meanwhile, dead zone voltage, linearity and sensitivity indexes are calculated.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. High accuracy position sensor testing arrangement, its characterized in that includes:
the device comprises a tested part fixing part (3), wherein the tested part fixing part (3) comprises a lifting platform (1) and an elbow clamp (2), the elbow clamp (2) is arranged at the top of the lifting platform (1), and a mounting base (8) is arranged at the bottom of the lifting platform (1);
the device comprises a measured part moving part (4), wherein the measured part moving part (4) comprises a clamping piston (5), a micrometer head (6), a moving platform (7) and a stepping motor (10), a bearing of the moving platform (7) is connected with a ball screw (9), the end part of the ball screw (9) is fixedly connected with the output end of the stepping motor (10), the micrometer head (6) is arranged on one side of the moving platform (7), and the micrometer head (6) and the clamping piston (5) are axially arranged through a bolt rod;
the industrial personal computer, the acquisition card and the signal generator (11) are electrically connected and controlled with the corresponding lifting platform (1), the micrometer head (6) and the stepping motor (10).
2. The high accuracy position sensor testing apparatus of claim 1, wherein: the motion part (4) of the measured piece can axially slide on the motion platform (7) and is driven by the micro-head (6) to move.
3. The high accuracy position sensor testing apparatus of claim 1, wherein: the motion platform (7) is arranged on the upper surface of the mounting base (8) in a sliding mode.
4. The high accuracy position sensor testing apparatus of claim 1, wherein: the lifting platform (1) is used for adjusting the relative position of the fixed part (3) of the measured piece relative to the moving part (4) of the measured piece.
5. The high accuracy position sensor testing apparatus of claim 1, wherein: the section of the motion platform (7) is U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110306561.4A CN112880728A (en) | 2021-03-23 | 2021-03-23 | High-precision position sensor testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110306561.4A CN112880728A (en) | 2021-03-23 | 2021-03-23 | High-precision position sensor testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112880728A true CN112880728A (en) | 2021-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202110306561.4A Pending CN112880728A (en) | 2021-03-23 | 2021-03-23 | High-precision position sensor testing device |
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| CN (1) | CN112880728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114187750A (en) * | 2021-11-13 | 2022-03-15 | 国网辽宁省电力有限公司阜新供电公司 | Sensitivity detection device for near-electricity alarm |
-
2021
- 2021-03-23 CN CN202110306561.4A patent/CN112880728A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114187750A (en) * | 2021-11-13 | 2022-03-15 | 国网辽宁省电力有限公司阜新供电公司 | Sensitivity detection device for near-electricity alarm |
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