CN117128896A - Table-board torsion angle displacement measuring device - Google Patents
Table-board torsion angle displacement measuring device Download PDFInfo
- Publication number
- CN117128896A CN117128896A CN202311157277.0A CN202311157277A CN117128896A CN 117128896 A CN117128896 A CN 117128896A CN 202311157277 A CN202311157277 A CN 202311157277A CN 117128896 A CN117128896 A CN 117128896A
- Authority
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- China
- Prior art keywords
- support column
- inner support
- table top
- angular displacement
- twenty
- 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.)
- Pending
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 40
- 239000003292 glue Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a table top torsion angle displacement measuring device which comprises an inner support column, wherein a measured table top is arranged at the upper end of the inner support column, a twenty-four-sided prism is arranged at the upper end of the measured table top, a grating drum arranged on the inner support column is arranged at the lower end of the measured table top, a collimator aligned with the twenty-four-sided prism is arranged at one side of the measured table top, an outer support column is arranged at the outer side of the inner support column, and a reading head matched with the grating drum is arranged at the upper end of the outer support column. The invention adopts the collimator to align with the angular displacement of the twenty-four sided prism measuring table surface on the measured table surface under the torque state, and simultaneously adopts the grating angle measuring element to measure the angular displacement of the supporting column supporting the measured table surface under the torque state, so as to compensate the measurement error brought by the angular displacement, thereby ensuring that the measurement is more accurate.
Description
Technical Field
The invention relates to a table-board torsion angle displacement measuring device.
Background
The inertial measurement unit needs to accurately acquire an angular position value with an error of + -2' in the calibration or alignment process. Because the moving parts exist in the inertial measurement unit, and meanwhile, the inertial measurement unit can apply larger disturbance torque to the table top of the turntable due to the dragging of the cable. Angular displacement occurs when the table top is acted by moment, and an angle error is introduced to the system. Therefore, the angular displacement of the table top under the action of torque needs to be measured and used as a systematic error to be compensated into a measuring system, so that the precision of calibration or alignment of inertial measurement unit equipment is improved.
Disclosure of Invention
The invention aims to provide a table-board torsion angle displacement measuring device for solving the problems in the background technology.
The technical scheme adopted for achieving the purpose is that the table top torsion angle displacement measuring device comprises an inner supporting column, a measured table top is installed at the upper end of the inner supporting column, a twenty-four-face prism is installed at the upper end of the measured table top, a grating drum installed on the inner supporting column is arranged at the lower end of the measured table top, a collimator aligned with the twenty-four-face prism is arranged at one side of the measured table top, an outer supporting column is arranged at the outer side of the inner supporting column, and a reading head matched with the grating drum is installed at the upper end of the outer supporting column.
Furthermore, the twenty-four-face prism is arranged at the center of the upper end of the tested table top and is fixed by glue.
Further, the inner support column and the outer support column are coaxially installed, and the tested table surface is fixed at the upper end of the inner support column through screws.
Advantageous effects
Compared with the prior art, the invention has the following advantages.
The invention adopts the collimator to align with the angular displacement of the twenty-four prism measuring table surface on the measured table surface under the torque state, and simultaneously measures the angular displacement of the supporting column supporting the measured table surface under the torque state by additionally arranging the grating angle measuring element so as to compensate the measurement error brought by the angular displacement, thereby ensuring more accurate measurement.
Drawings
The present invention is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is an application scenario of the present invention.
Detailed Description
The invention is further described below with reference to examples and figures.
As shown in fig. 1, the table-board torsion angle displacement measuring device comprises an inner support column 4, a measured table surface 1 is mounted at the upper end of the inner support column 4, a twenty-four-sided prism 2 is mounted at the upper end of the measured table surface 1, a grating drum 6 mounted on the inner support column 4 is arranged at the lower end of the measured table surface 1, a collimator 3 aligned with the twenty-four-sided prism 2 is arranged at one side of the measured table surface 1, an outer support column 5 is arranged at the outer side of the inner support column 4, and a reading head 7 matched with the grating drum 6 is mounted at the upper end of the outer support column 5.
The twenty-four-face prism 2 is arranged at the center of the upper end of the tested table surface 1 and is fixed by glue.
The inner support column 4 and the outer support column 5 are coaxially installed, and the tested table top 1 is fixed at the upper end of the inner support column 4 through screws.
In the invention, the tested table surface 1 is arranged on the inner support column 4, the tested table surface 1 is provided with the twenty-four-sided prism 2, the collimator 3 is aligned with the twenty-four-sided prism, and when a torsion moment is applied to the tested table surface 1, the angular displacement of the tested table surface 1 is reflected on the numerical variation of the collimator.
The support of the measuring device comprises an inner support column 4 and an outer support column 5, and grating drums 6 and reading heads 7 which are respectively and correspondingly provided with grating angle measuring components on the inner support column 4 and the outer support column 5, wherein the angle measuring components are used for measuring the angular displacement of the inner support column 4 under the action of torsional moment.
The angular displacement of the tested table surface 1 fed back by the collimator 3 comprises the angular displacement of the tested table surface 1 and the angular displacement of the inner support column 4, so that the actual angular displacement of the tested table surface 1 is the difference between the measured value of the collimator 3 and the measured value of the angle measuring component.
The inner support column 4 and the outer support column 5 are arranged on a fixed foundation, and the two support columns are coaxially arranged and mutually independent; the tested table top 1 is fixed on the inner support column 4 through a screw, and meanwhile, the twenty-four-sided prism 2 is placed in the center of the tested table top 1 and fixed through glue; the grating drum 6 is fixed on the inner support column 4 and is positioned right below the tested table surface 1; the reading head 7 is fixed on the outer support column 5, forms a grating angle measurement assembly with the grating drum 6, and finally the collimator 3 is aligned with one surface of the icosahedron 2.
In the implementation of the invention, firstly, the tested table surface 1 is arranged at the upper end of the inner support column 4, the collimator 3 is aligned with the icosahedron 2 by placing the icosahedron 2 on the tested table surface 1, and when a torsional moment is applied to the tested table surface 1, the angular displacement of the tested table surface 1 is reflected on the numerical variation of the collimator. And secondly, the angular displacement of the tested table surface 1 fed back by the collimator 3 comprises the angular displacement of the tested table surface 1 and the angular displacement of the inner support column 4. In order to actually measure the angular displacement of the measured table top, a grating drum 6 is arranged on the inner support column 4, a reading head 7 is arranged on the outer support column 5 to form a grating angle measuring assembly, and the grating angle measuring assembly is used for measuring the angular displacement of the inner support column under the action of torsional moment, and the actual angular displacement of the measured table top is the difference between the measured value of the collimator tube and the measured value of the angle measuring assembly.
When the installation is complete, two equal forces are applied to the illustrated positions through the tension meter, as shown in fig. 2, at the moment, the tested table surface and the inner support column are only affected by the torque and are not affected by the tension, and the torque can be obtained through calculation and can be adjusted. When the moment loading is completed, the reading difference of the collimator tube is recorded as omega 1 At the same time, the grating feedback system will also have reading difference, marked as omega 2 The angular displacement of the measured table surface is omega 1 And omega 2 Is a difference in (c).
The invention provides a table-board torsion angle displacement measuring device, which is characterized in that firstly, a collimator is aligned with a icosahedron to measure the displacement of a measured table surface when receiving torsion moment; and the angular displacement of the tested table surface fed back by the collimator comprises the angular displacement of the tested table surface and the angular displacement of the inner support column. In order to truly measure the angular displacement of the table top, a grating angle measuring assembly is arranged and used for measuring the angular displacement of the inner support column under the action of torsional moment and compensating the measurement error brought by the angular displacement, so that the measurement is more accurate, and finally the error is used as a system error to be compensated into an inertial measurement unit calibration or alignment system, so that the accuracy of the inertial measurement unit calibration or alignment is improved.
Claims (3)
1. The utility model provides a mesa torsion angle displacement measuring device, includes interior support column (4), its characterized in that, interior support column (4) upper end is installed and is surveyed mesa (1), and the twenty-four sides prism (2) are installed to by survey mesa (1) upper end, and be equipped with grating drum (6) of installing on interior support column (4) by survey mesa (1) lower extreme, one side of being surveyed mesa (1) be equipped with the collimator (3) of twenty-four sides prism (2) alignment, the outside of interior support column (4) is equipped with outer support column (5), and outer support column (5) upper end is installed with grating drum (6) matched with reading head (7).
2. The table top torsion angle displacement measuring device according to claim 1, wherein the twenty-four-sided prism (2) is installed at the center of the upper end of the table top (1) to be measured and fixed by glue.
3. A table-top torsion angle displacement measuring device according to claim 1, characterized in that the inner support column (4) and the outer support column (5) are coaxially mounted, and the measured table-top (1) is fixed to the upper end of the inner support column (4) by means of screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311157277.0A CN117128896A (en) | 2023-09-08 | 2023-09-08 | Table-board torsion angle displacement measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311157277.0A CN117128896A (en) | 2023-09-08 | 2023-09-08 | Table-board torsion angle displacement measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117128896A true CN117128896A (en) | 2023-11-28 |
Family
ID=88856303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311157277.0A Pending CN117128896A (en) | 2023-09-08 | 2023-09-08 | Table-board torsion angle displacement measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117128896A (en) |
-
2023
- 2023-09-08 CN CN202311157277.0A patent/CN117128896A/en active Pending
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