CN115112151A - Method and device for correcting precision calibration error of angle measurement precision of precision shafting - Google Patents
Method and device for correcting precision calibration error of angle measurement precision of precision shafting Download PDFInfo
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- CN115112151A CN115112151A CN202210823976.3A CN202210823976A CN115112151A CN 115112151 A CN115112151 A CN 115112151A CN 202210823976 A CN202210823976 A CN 202210823976A CN 115112151 A CN115112151 A CN 115112151A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Manufacturing & Machinery (AREA)
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a method, a device, equipment and a storage medium for correcting a precision shafting angle measurement precision calibration error, wherein the method comprises the following steps: s1: respectively establishing a measuring optical link and a compensating optical link on a shafting rotor and a shafting stator; s2: a compensation mirror is arranged between the measuring light pipe and the polygon mirror, and compensation value measurement based on angle measurement precision calibration of the compensation mirror is carried out; s3: removing the compensating mirror, and measuring an original value of the angle measurement precision calibration; s4: and performing algebraic difference calculation based on the compensation value of the angle measurement precision calibration and the original value of the angle measurement precision calibration to obtain the precision measurement result of the angle measurement element. The method, the device, the equipment and the storage medium compensate errors caused by the frame or disturbance by respectively establishing a measuring optical link and a compensating optical link on a stator and a rotor of a precision shaft system.
Description
Technical Field
The invention belongs to the technical field of measurement and correction, and particularly relates to a method, a device, equipment and a storage medium for correcting a precision calibration error of a precision shafting angle measurement precision.
Background
In the process of calibrating the precision of angle measurement elements of high-precision shafting products such as inertial navigation equipment, precision machine tools, satellite-borne pan-tilt tables and the like, the optical measurement method described in the method 104 in GJB1801 'inertia technology test equipment main performance test method' is usually adopted, however, when a machine table and a rack mounted on a shafting are subjected to external vibration and shafting load different axiality and are subjected to integral deflection or deformation, the condition that an optical measurement system and a shafting angle measurement system with an angle measurement encoder are subjected to integral deflection is easily generated, and further a steady-state error or a first harmonic error is formed in an angle measurement calibration result.
Disclosure of Invention
The invention aims to provide a method, a device, equipment and a storage medium for correcting an angle measurement precision calibration error of a precision shafting.
In order to solve the problems, the technical scheme of the invention is as follows: a method for correcting an angle measurement precision calibration error of a precision shafting comprises the following steps:
s1: respectively establishing a measuring optical link and a compensating optical link on a shafting rotor and a shafting stator;
s2: a compensation mirror is arranged between the measuring light pipe and the polygon mirror, and compensation value measurement based on angle measurement precision calibration of the compensation mirror is carried out;
s3: removing the compensating mirror, and measuring an original value of the angle measurement precision calibration;
s4: and performing algebraic difference calculation based on the compensation value of the angle measurement precision calibration and the original value of the angle measurement precision calibration to obtain the precision measurement result of the angle measurement element.
In an embodiment of the present invention, the steps S2 and S3 further include:
and sequentially measuring compensation values of the angle measurement precision calibration and original values of the angle measurement precision calibration of the polygon mirror at different angles.
In an embodiment of the present invention, the establishing the measurement optical link and the compensation optical link on the shafting rotor and the shafting stator respectively comprises: and the link centers of the measurement optical link and the compensation optical link are arranged at the equal height positions of the axis center of a measurement shafting, and the measurement optical link and the compensation optical link share a set of digital optical axis calibration device.
In an embodiment of the present invention, the compensation mirror is connected to the precision shaft system through a compensation mirror mounting base, the compensation mirror mounting base is connected to a shaft system stator of the precision shaft system through a locking pin, and the compensation mirror mounting base can be switched between a first state and a second state through the locking pin.
In one embodiment of the present invention, step S2 includes: when a measuring optical link and a compensating optical link are respectively established on a shafting rotor and a shafting stator, the measuring light pipe is preliminarily aligned with the polygon mirror; when measuring the compensation value calibrated based on the angle measurement precision of the compensation mirror, the compensation mirror is initially aligned with the measurement light tube by adjusting the rotary lock pin, and the multi-surface edge is subjected toThe A surface position of the prism aligns the compensator with the measuring light pipe, then the rotating polygon prism stays in each measuring angle, and the measuring compensator measures the light pipe angle theta under different measuring angles of the polygon prism A0 、θ A1 、θ A2 、…θ An 。
In one embodiment of the present invention, S3 includes: adjusting the compensating mirror to a position not shielding the polygon mirror by adjusting the rotary lock pin, and then measuring the corresponding light pipe angle theta of the polygon mirror B0 、θ B1 、θ B2 、…θ Bn 。
In an embodiment of the present invention, the algebraic differencing method based on the compensation value of the angular accuracy calibration and the original value of the angular accuracy calibration includes: introducing a compensation quantity theta on the basis of a method 104 in GJB 1801' inertia technology test equipment main performance test method A0 、θ A1 、θ A2 、…θ A23 The calculation formula is formed as follows: e.g. of the type oi ＝θ Bi -θ B0 -Δ i -θ Ai Where i is 1 to n, n is the number of facets, and Δ i Correcting the angle of the polygon body; get e oi The medium positive and negative maxima are the positive and negative maximum errors of the angular position measurement accuracy.
Based on the same conception, the invention also provides a device for correcting the calibration error of the angular measurement precision of the precision shafting, which comprises: the device comprises a measuring light pipe, a polygon mirror and a compensating mirror, wherein the polygon mirror and an angle measurement precision shafting are coaxially connected, the measuring light pipe is arranged on the surface A of the polygon mirror, the compensating mirror is arranged on a shafting stator of the angle measurement precision shafting through a compensating mirror mounting seat and a locking pin shaft, and the compensating mirror reaches the compensating mirror mounting seat and can be switched between a first state and a second state through the locking pin shaft.
Based on the same concept, the present invention also provides an electronic device, comprising: a memory for storing a processing program; and the processor is used for realizing any one of the correction methods for the precision shafting angle measurement precision calibration error when executing the processing program.
Based on the same conception, the invention also provides a readable storage medium, wherein a processing program is stored on the readable storage medium, and when the processing program is executed by a processor, the method for correcting the precision calibration error of the angle measurement precision of the precision shafting is realized.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
1. the invention compensates the errors caused by the frame or disturbance by respectively establishing a measuring optical link and a compensating optical link on the stator and the rotor of the precision shaft system.
2. The invention introduces the compensation quantity theta based on the method 104 in GJB1801 inertia technology test equipment main performance test method A0 、θ A1 、θ A2 、…θ A23 The calculation formula is formed as follows: e.g. of the type oi ＝θ Bi -θ B0 -Δ i -θ Ai Where i is 1 to n, where n is the number of facets, Δ i The angle is corrected for the polygon body, and error interference caused by disturbance factors outside a precision shaft system can be accurately eliminated.
Drawings
FIG. 1 is a schematic flow chart of a method for correcting an angle measurement precision calibration error of a precision shafting according to the present invention;
FIG. 2 is a schematic diagram of a calibration device for precision angle measurement precision calibration errors of a precision shafting in the embodiment of the present invention;
FIG. 3 is a schematic diagram of a calibration device for precision angle measurement precision calibration errors of a precision shafting in the embodiment of the present invention;
FIG. 4 is a schematic diagram of a first state of a calibration apparatus for precision angle measurement precision calibration error of a precision shafting according to an embodiment of the present invention;
FIG. 5 is a diagram of a second state of the calibration apparatus for calibrating an angle measurement precision calibration error of a precision shafting according to an embodiment of the present invention.
Description of the reference numerals:
1: measuring an angle precision shafting; 101: a shafting stator; 102: a shafting rotor; 2: a polygonal prism; 301: a compensation mirror; 302: a compensator mount; 303: locking the pin shaft; 4: the light pipe is measured.
Detailed Description
The following provides a method and an apparatus for improving the initial installation angle accuracy of a heliostat according to the present invention with reference to the accompanying drawings and embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Referring to fig. 1 and 2, in an embodiment, a method for correcting an angular measurement precision calibration error of a precision shafting includes:
s1: respectively establishing a measuring optical link and a compensating optical link on a shafting rotor 102 and a shafting stator 101;
s2: a compensating mirror 301 is arranged between the measuring light pipe 4 and the polygonal prism 2, and compensation value measurement based on angle measurement precision calibration of the compensating mirror 301 is carried out;
s3: removing the compensating mirror 301, and measuring an original value of the angle measurement precision calibration;
s4: and performing algebraic difference calculation based on the compensation value of the angle measurement precision calibration and the original value of the angle measurement precision calibration to obtain the precision measurement result of the angle measurement element.
The invention compensates the errors caused by the frame or disturbance by respectively establishing a measuring optical link and a compensating optical link on the stator and the rotor of the precision shafting 1.
In an embodiment of the present invention, the steps S2 and S3 further include: and sequentially measuring compensation values of the angle measurement precision calibration and original values of the angle measurement precision calibration of the polygon mirror 2 at different angles.
By sequentially measuring the compensation value of the angle measurement precision calibration and the original value of the angle measurement precision calibration of the polygon mirror 2 at different angles, all angle errors of the angle measurement precision shafting 1 can be measured, thereby reducing and improving the accuracy of the errors.
In an embodiment of the present invention, the establishing the measurement optical link and the compensation optical link on the shafting rotor 102 and the shafting stator 101 respectively comprises: and the link centers of the measurement optical link and the compensation optical link are arranged at the equal height positions of the axis center of a measurement shafting, and the measurement optical link and the compensation optical link share a set of digital optical axis calibration device.
Through the accurate adjustment of the position, the interference on the error correction of the angle measurement precision shafting caused by external factors is further reduced.
In an embodiment of the present invention, the compensating mirror 301 is connected to the precision shafting through a compensating mirror mounting base 302, the compensating mirror mounting base 302 is connected to the shafting stator 101 of the precision shafting through a locking pin 303, and the compensating mirror 301 and the compensating mirror mounting base 302 can be switched between the first state and the second state through the locking pin 303. Because the state of the compensating mirror 301 is switched by arranging the compensating mirror mounting base 302 and the locking pin shaft 303, the compensating mirror 301 is arranged between the measuring light pipe 4 and the polygonal prism 2 in the first state, and the compensation value is measured based on the angle measurement precision calibration of the compensating mirror 301; in the second state, the compensating mirror 301 is disposed not between the measuring light pipe 4 and the polygonal prism 2, and the original value measurement for calibrating the angle measurement precision is performed.
In one embodiment of the present invention, step S2 includes: when a measuring optical link and a compensating optical link are respectively established on the shafting rotor 102 and the shafting stator 101, the measuring light pipe is preliminarily aligned with the polygon mirror; when the compensation value is calibrated based on the angle measurement precision of the compensation mirror 301, the compensation mirror 301 is initially aligned with the measurement light pipe 4 by adjusting the rotary lock pin 303, the compensation mirror 301 and the measurement light pipe 4 are aligned at the position of the surface A of the polygon mirror 2, then the rotary polygon mirror 2 stops in each measurement angle, and the light pipe angle theta of the compensation mirror 301 at different measurement angles of the polygon mirror 2 is measured A0 、θ A1 、θ A2 、…θ An . Wherein the a-plane direction of the polygon mirror 2 is a direction perpendicular to the rotation axis of the polygon mirror. See in particular the direction of the arrows in fig. 3.
In one embodiment of the present invention, S3 includes: the compensating mirror 301 is adjusted to a position not to obstruct the polygon mirror 2 by adjusting the rotary lock pin 303, and then the polygon is measuredLight pipe angle theta corresponding to mirror 2 B0 、θ B1 、θ B2 、…θ Bn 。
The invention introduces the compensation quantity theta based on the method 104 in GJB1801 inertia technology test equipment main performance test method A0 、θ A1 、θ A2 、…θ A23 The calculation formula is formed as follows: e.g. of the type oi ＝θ Bi -θ B0 -Δ i -θ Ai Where i is 1 to n, where n is the number of facets, Δ i The angle is corrected for the polygon body, and error interference caused by disturbance factors outside a precision shaft system can be accurately eliminated.
In an embodiment of the present invention, the algebraic differencing method based on the compensation value of the angular accuracy calibration and the original value of the angular accuracy calibration includes: introducing a compensation quantity theta on the basis of a method 104 in GJB 1801' inertia technology test equipment main performance test method A0 、θ A1 、θ A2 、…θ A23 The calculation formula is formed as follows: e.g. of the type oi ＝θ Bi -θ B0 -Δ i -θ Ai Where i is 1 to n, where n is the number of facets, Δ i Correcting the angle of the polygon body; get e oi The medium positive and negative maxima are the positive and negative maximum errors in the angular position measurement accuracy.
Based on the same conception, the invention also provides a device for correcting the calibration error of the angular measurement precision of the precision shafting, which comprises: measure light pipe 4, polygon mirror 2, compensating mirror 301, polygon mirror 2 sets up with angle measurement precision shafting 1 coaxial coupling, measure light pipe 4 set up in polygon mirror 2's A face, compensating mirror 301 pass through compensating mirror mount pad 302 and lock pin shaft 303 install in angle measurement precision shafting 1's shafting stator 101, compensating mirror 301 reaches compensating mirror mount pad 302 can pass through lock pin shaft 303 switches between first state and second state.
Based on the same concept, the present invention also provides an electronic device, comprising: a memory for storing a processing program; and the processor is used for realizing the correction method of the precision calibration error of the angle measurement precision of the precision shafting when executing the processing program.
Based on the same conception, the invention also provides a readable storage medium, wherein a processing program is stored on the readable storage medium, and when the processing program is executed by a processor, the method for correcting the precision calibration error of the angle measurement precision of the precision shafting is realized.
The method for correcting the precision calibration error of the angle measurement precision of the precision shafting can be stored in a computer readable storage medium if the method is realized in the form of program instructions and sold or used as an independent product. Based on such understanding, the technical solution of the present embodiment essentially or partially contributes to the prior art, or all or part of the technical solution may be embodied in the form of software, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present disclosure. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
For convenience and brevity of description, it is clear to those skilled in the art that the above-described system and apparatus may be referred to in the foregoing method embodiments for identifying specific implementations.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, they are still within the scope of the present invention provided that they fall within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. A method for correcting the calibration error of the angular measurement precision of a precision shafting is characterized by comprising the following steps:
s1: respectively establishing a measuring optical link and a compensating optical link on a shafting rotor and a shafting stator;
s2: a compensating mirror is arranged between the measuring light pipe and the polygonal prism, and compensation value measurement based on angle measurement precision calibration of the compensating mirror is carried out;
s3: removing the compensating mirror, and measuring an original value of the angle measurement precision calibration;
s4: and performing algebraic difference calculation based on the compensation value of the angle measurement precision calibration and the original value of the angle measurement precision calibration to obtain the precision measurement result of the angle measurement element.
2. The method for correcting the calibration error of the angular measurement precision of the precision shafting according to claim 1, wherein the steps S2 and S3 further include:
and sequentially measuring compensation values of the angle measurement precision calibration or original values of the angle measurement precision calibration of the polygon mirror at different angles.
3. The method for correcting the calibration error of the angular measurement precision of the precision shafting according to claim 1, wherein the respectively establishing the measurement optical link and the compensation optical link on the shafting rotor and the shafting stator comprises: and the link centers of the measurement optical link and the compensation optical link are arranged at the equal height positions of the axis center of a measurement shafting, and the measurement optical link and the compensation optical link share a set of digital optical axis calibration device.
4. The method for correcting the calibration error of the angular measurement precision of the precision shafting as claimed in claim 1, wherein the compensator is connected with the precision shafting through a compensator mounting seat, the compensator mounting seat is connected with a shafting stator of the precision shafting through a locking pin shaft, and the compensator mounting seat can be switched between a first state and a second state through the locking pin shaft.
5. The method for correcting the calibration error of the angular measurement precision of the precision shafting according to claim 1, wherein the step S2 comprises the following steps: respectively in the axisWhen a measuring optical link and a compensating optical link are respectively established on the rotor and the stator, the measuring light pipe is preliminarily aligned with the polygon mirror; when measuring the compensation value calibrated based on the angle measurement precision of the compensation mirror 301, the compensation mirror is initially aligned with the measurement light pipe by adjusting the rotary lock pin, the compensation mirror and the measurement light pipe are aligned at the A surface position of the polygon mirror, then the rotary polygon mirror stays in each measurement angle, and the light pipe angle theta of the compensation mirror at different measurement angles of the polygon mirror is measured A0 、θ A1 、θ A2 、…θ An 。
6. The method for correcting the calibration error of the angular measurement precision of the precision shafting as claimed in claim 5, wherein S3 comprises: adjusting the compensating mirror to a position not shielding the polygon mirror by adjusting the rotary lock pin, and then measuring the corresponding light pipe angle theta of the polygon mirror B0 、θ B1 、θ B2 、…θ Bn 。
7. The method for correcting the calibration error of the angular measurement precision of the precision shafting according to claim 6, wherein the algebraic difference calculating method based on the compensation value of the angular measurement precision calibration and the original value of the angular measurement precision calibration comprises:
introducing a compensation quantity theta on the basis of a method 104 in GJB 1801' inertia technology test equipment main performance test method A0 、θ A1 、θ A2 、…θ A23 The calculation formula is formed as follows: e.g. of the type oi ＝θ Bi -θ B0 -Δ i -θ Ai Where i is 1 to n, where n is the number of facets, Δ i Correcting the angle of the polygon body;
get e oi The medium positive and negative maxima are the positive and negative maximum errors in the angular position measurement accuracy.
8. The utility model provides a correcting unit of precision shafting angle measurement precision calibration error which characterized in that includes: the device comprises a measuring light pipe, a polygon mirror and a compensating mirror, wherein the polygon mirror and an angle measurement precision shafting are coaxially connected, the measuring light pipe is arranged on the surface A of the polygon mirror, the compensating mirror is arranged on a shafting stator of the angle measurement precision shafting through a compensating mirror mounting seat and a locking pin shaft, and the compensating mirror reaches the compensating mirror mounting seat and can be switched between a first state and a second state through the locking pin shaft.
9. An electronic device, comprising:
a memory for storing a processing program;
a processor, which when executing the processing program implements the method for correcting the calibration error of the precision shafting angular measurement precision according to any one of claims 1 to 7.
10. A readable storage medium, wherein a processing program is stored on the readable storage medium, and when being executed by a processor, the processing program implements the method for correcting the calibration error of the angular measurement precision of the precision shafting according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210823976.3A CN115112151A (en) | 2022-07-14 | 2022-07-14 | Method and device for correcting precision calibration error of angle measurement precision of precision shafting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210823976.3A CN115112151A (en) | 2022-07-14 | 2022-07-14 | Method and device for correcting precision calibration error of angle measurement precision of precision shafting |
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| CN202210823976.3A Pending CN115112151A (en) | 2022-07-14 | 2022-07-14 | Method and device for correcting precision calibration error of angle measurement precision of precision shafting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953672A (en) * | 2023-09-20 | 2023-10-27 | 北京航天计量测试技术研究所 | Angle differential calibration method of laser radar two-dimensional precise turntable |
-
2022
- 2022-07-14 CN CN202210823976.3A patent/CN115112151A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953672A (en) * | 2023-09-20 | 2023-10-27 | 北京航天计量测试技术研究所 | Angle differential calibration method of laser radar two-dimensional precise turntable |
| CN116953672B (en) * | 2023-09-20 | 2024-01-09 | 北京航天计量测试技术研究所 | Angle differential calibration method of laser radar two-dimensional precise turntable |
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