CN100559114C - High-precision angle measuring method - Google Patents
High-precision angle measuring method Download PDFInfo
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- CN100559114C CN100559114C CNB2008101180383A CN200810118038A CN100559114C CN 100559114 C CN100559114 C CN 100559114C CN B2008101180383 A CNB2008101180383 A CN B2008101180383A CN 200810118038 A CN200810118038 A CN 200810118038A CN 100559114 C CN100559114 C CN 100559114C
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- 238000005259 measurement Methods 0.000 claims description 39
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Abstract
A high-precision angle measurement method comprises the steps that firstly, an object to be measured is placed on a rotating platform, then a 720-tooth indexing table and a 391-tooth indexing table are combined and placed on the rotating platform, and a plane mirror is placed on the 720-tooth indexing table and the 391-tooth indexing table; then adjusting the photoelectric autocollimator to make the measuring light emitted by the photoelectric autocollimator aim at the plane reflector; and rotating the 720-tooth indexing table and the 391-tooth indexing table to rotate for an angle, recording the rotating angle value at the moment, and then reversely rotating the rotating platform to enable the measuring light emitted by the photoelectric autocollimator to aim at the same aiming position on the plane mirror again, wherein the rotating angle value of the 720-tooth indexing table and the 391-tooth indexing table is the rotated angle value of the sensitive device to be measured. The method has simple operation steps and can realize high-precision test of the whole-circle angle.
Description
Technical field
The present invention relates to a kind of angle-measuring method, particularly a kind of be used for that the spacer remote sensing device debugs and test on a large scale, high precision angle-measuring method.
Background technology
The spacer remote sensing device often will carry out the angle measurement of wide-measuring range, such as System Integration Test and elements of interior orientation test etc. in debuging process.The angle measurement of high precision wide-measuring range is one of requisite means in the remote sensing camera development process, in optical detection, debug in the process and play an important role, be mainly used in camera system uniting and adjustment, camera internal position element (mapping camera) and the detection of angle test camera system and wait each link, angle-measurement accuracy directly has influence on the quality of camera.Along with the raising day by day to the remote sensor resolution requirement, the spacer remote sensing device will inevitably make the volume of remote sensor become gradually greatly developing towards long burnt direction, and the requirement of image quality also progressively improves, thereby the accuracy requirement of debuging and testing is also improved day by day.Like this, will bigger requirement be arranged to the load-bearing capacity and the angle measurement accuracy of angle-measuring equipment.
Present solution for big load-bearing capacity angle measurement, general by improving rotary axis system stability, utilize the method for grating angle measurement, as " development of measurement of angle technology " literary composition of on 2002 the 23rd phases the 2nd volume " laser magazine ", delivering by Tao Wei, the clear nation in Pu, Sun Yunbin, perhaps rolled up the angle-measuring method described in " Precise Angle-measuring Table " literary composition of delivering on " metering journal " 1986 the 7th phases the 4th by the Sun Fang gold.Adopt the angle-measuring equipment of this method, load-bearing capacity generally can reach 1500kg even bigger, but its angle measurement accuracy is generally all 1 " below.Debug and test, 1 for high-precision " angle measurement accuracy can not satisfy present request for utilization already, demarcate such as the geometric accuracy of remote sensor, just require angle measurement accuracy can reach 0.4 ", in addition higher." measuring method of following angle measurement accuracy; write as Cai Shuzhang, Jing Fangsheng; by measuring method of introducing in " photoelectric auto-collimator and the application thereof " and " multiteeth indexing table " of China Measuring Press's publication in 1986; its measurement of angle scope little (it is following to be generally classification) or load-bearing capacity are below hundred kilograms can't satisfy heavy load, wide range of angles Testing requirement and can realize 0.5 at present.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of measuring accuracy height, measurement range is wide, load-bearing capacity is big angle-measuring method are provided.
Technical solution of the present invention is: a kind of high precision angle-measuring method, and step is as follows:
(1) object under test is placed on the rotation platform;
(2) 720 tooth circular dividing tables and the combination of 391 tooth circular dividing tables are placed on the rotation platform, and in 720 tooth circular dividing tables and the combination of 391 tooth circular dividing tables, place plane mirror;
(3) adjust photoelectric auto-collimator, the measurement light target plane catoptron that it is sent;
(4) rotate the combination of 720 tooth circular dividing tables and 391 tooth circular dividing tables, make angle of its rotation, and record rotation angle value at this moment;
(5) backward rotation rotation platform, make measurement light that photoelectric auto-collimator sends again on the target plane catoptron with the identical homing position of step (3);
(6) rotation angle value of 720 tooth circular dividing tables and 391 tooth circular dividing tables combination is the turned angle value of Sensitive Apparatus to be measured in the step (4).
The horizontal rotating shaft of described 720 tooth circular dividing tables and the combination of 391 tooth circular dividing tables is coaxial with the horizontal rotating shaft of rotation platform.
The measurement light that photoelectric auto-collimator sends in the described step (3) is vertical with the minute surface of plane mirror.
It is 0～360 degree that described 720 tooth circular dividing tables and 391 tooth circular dividing tables make up rotatable angular range.
The load-bearing capacity of described rotation platform can reach more than the 1000kg, and can realize 360 degree rotations.
The precision δ of described Sensitive Apparatus rotational angle to be measured is by the precision δ of photoelectric auto-collimator
p, 720 tooth circular dividing table precision δ
T1With 391 tooth circular dividing table precision δ
T2Decision, relational expression is:
The present invention's advantage compared with prior art is:
1, the present invention matches by combination of 720 tooth circular dividing tables and 391 tooth circular dividing tables and rotation platform, has realized the wide range of angles measurement, and the angle measurement scope can reach 360 °;
2, the inventive method adopts the scheme that rotation, bearing function and angle measurement functional separation are realized, has solved the problem that big in the past carrying, big angle measurement scope can not realize high precision measurement, can realize the high precision measurement of complete cycle angle;
3, the inventive method matches with photoelectric auto-collimator by plane mirror and determines the measurement of angle benchmark, and method is easy, measuring accuracy is high;
4, rotation platform of the present invention can carry the above testee of 1000kg, can realize the heavy load measurement.
Description of drawings
Fig. 1 is the FB(flow block) of angle-measuring method of the present invention;
Fig. 2 is the structure composition diagram of angle-measuring equipment in the angle-measuring method of the present invention.
Embodiment
Be illustrated in figure 1 as the FB(flow block) of angle-measuring method of the present invention, Fig. 2 is the structure composition diagram of the used angle-measuring equipment of the inventive method, and wherein 1 is that plane mirror, 2 is that 720 tooth circular dividing tables and 391 tooth circular dividing tables combination, 3 are that photoelectric auto-collimator, 4 is rotation platform.Rotation platform provides rotation and bearing function, and the angle measurement function is made up by 720 tooth circular dividing tables and 391 tooth circular dividing tables and photoelectric auto-collimator is realized.Testee is placed on the rotation platform, its position can be chosen arbitrarily, 720 tooth circular dividing tables and the combination of 391 tooth circular dividing tables are placed on the rotation platform, and in 720 tooth circular dividing tables and the combination of 391 tooth circular dividing tables, place plane mirror, should make during placement that the horizontal rotating shaft of 720 tooth circular dividing tables and 391 tooth circular dividing tables combination is coaxial with the horizontal rotating shaft of rotation platform.
During test, make the measurement light target plane catoptron that photoelectric auto-collimator sends, it in the present embodiment vertical relation, when 720 tooth circular dividing tables and low-angle of 391 tooth circular dividing tables combination rotation, the measurement light that photoelectric auto-collimator sends is no longer vertical with plane mirror 1, this moment the backward rotation rotation platform, make measurement light that photoelectric auto-collimator sends once more perpendicular to plane mirror, write down the angle numerical value of 720 tooth circular dividing tables and 391 tooth circular dividing tables combination rotation this moment, be the angle that rotation platform turns over, the angle value that this value also rotates through for testee.
Angle-measuring method of the present invention, its measuring accuracy depend on the angle measurement accuracy of photoelectric auto-collimator, 720 tooth circular dividing tables and 391 tooth circular dividing tables.If the precision of photoelectric auto-collimator is δ
p, 720 tooth circular dividing table precision are δ
T1, 391 tooth circular dividing table precision are δ
T2, tested camera angle measuring accuracy is δ, according to the error principle, relational expression is arranged
The diameter of choosing plane mirror is greater than 40mm, can be so that the used photoelectric auto-collimator angle measurement accuracy of the present invention be better than 0.06 "; and the 720 tooth circular dividing tables of choosing and the angle measurement accuracy of 391 tooth circular dividing tables are 0.15 ", so the angle measurement accuracy that the present invention can realize is better than 0.31 ", and can realize the angle measurement of 360 ° of scopes.
Rotation platform among the present invention is in order to provide carrying and spinfunction, and its load-bearing capacity can reach 1000kg, and can carry out 360 ° of rotations.
The present invention can realize heavy load, big angle measurement scope, high precision angle-measuring, as general angle measurement technique, not only can be applicable to the measurement of angle of spacer remote sensing device,, and can be widely used in the measurement of angle of other field such as splicing, System Integration Test and elements of interior orientation test etc.
The content that is not described in detail in the instructions of the present invention belongs to those skilled in the art's known technology.
Claims (6)
1, a kind of high precision angle-measuring method is characterized in that step is as follows:
(1) Sensitive Apparatus to be measured is placed on the rotation platform;
(2) 720 tooth circular dividing tables and the combination of 391 tooth circular dividing tables are placed on the rotation platform, and in 720 tooth circular dividing tables and the combination of 391 tooth circular dividing tables, place plane mirror;
(3) adjust photoelectric auto-collimator, the measurement light target plane catoptron that it is sent;
(4) rotate the combination of 720 tooth circular dividing tables and 391 tooth circular dividing tables, make angle of its rotation, and record rotation angle value at this moment;
(5) backward rotation rotation platform, make measurement light that photoelectric auto-collimator sends again on the target plane catoptron with the identical homing position of step (3);
(6) rotation angle value of 720 tooth circular dividing tables and 391 tooth circular dividing tables combination is the turned angle value of Sensitive Apparatus to be measured behind the backward rotation rotation platform.
2, a kind of high precision angle-measuring method according to claim 1 is characterized in that: the horizontal rotating shaft of described 720 tooth circular dividing tables and the combination of 391 tooth circular dividing tables is coaxial with the horizontal rotating shaft of rotation platform.
3, a kind of high precision angle-measuring method according to claim 1 is characterized in that: the measurement light that photoelectric auto-collimator sends in the described step (3) is vertical with the minute surface of plane mirror.
4, a kind of high precision angle-measuring method according to claim 1 is characterized in that: it is 0～360 degree that described 720 tooth circular dividing tables and 391 tooth circular dividing tables make up rotatable angular range.
5, a kind of high precision angle-measuring method according to claim 1, it is characterized in that: the load-bearing capacity of described rotation platform can reach more than the 1000kg, and can realize 360 degree rotations.
6, a kind of high precision angle-measuring method according to claim 1, it is characterized in that: the precision δ of described Sensitive Apparatus rotational angle to be measured is by the precision δ of photoelectric auto-collimator
p, 720 tooth circular dividing table precision δ
T1With 391 tooth circular dividing table precision δ
T2Decision, relational expression is:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101180383A CN100559114C (en) | 2008-08-07 | 2008-08-07 | High-precision angle measuring method |
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| CNB2008101180383A CN100559114C (en) | 2008-08-07 | 2008-08-07 | High-precision angle measuring method |
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| CN101339011A CN101339011A (en) | 2009-01-07 |
| CN100559114C true CN100559114C (en) | 2009-11-11 |
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| CNB2008101180383A Expired - Fee Related CN100559114C (en) | 2008-08-07 | 2008-08-07 | High-precision angle measuring method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538713A (en) * | 2011-12-19 | 2012-07-04 | 北京卫星环境工程研究所 | System for measuring final-assembly high-precision angle of spacecraft |
| CN102914260B (en) * | 2012-09-27 | 2014-11-19 | 天津大学 | Two-axis photoelectric collimator based rotary table division error detection method |
| CN103868475A (en) * | 2014-02-20 | 2014-06-18 | 奇瑞汽车股份有限公司 | Automobile toe-in angle measuring device |
| CN104457688B (en) * | 2014-11-17 | 2017-02-22 | 北京卫星环境工程研究所 | High-precision automatic measurement device for batch equipment attitude angle matrix on satellite |
| CN104482884B (en) * | 2014-11-20 | 2017-10-03 | 中国工程物理研究院激光聚变研究中心 | Narrow angle measuring device and its measuring method |
| CN106468544B (en) * | 2016-08-31 | 2019-01-18 | 上海卫星工程研究所 | Satellite high-precision angle-measuring method based on photoelectric auto-collimator |
| CN109186502B (en) * | 2018-08-21 | 2021-03-09 | 天津大学 | Full-circumference high-precision positioning rotary worktable based on photoelectric autocollimator and method |
| CN109870121B (en) * | 2019-04-01 | 2021-01-08 | 长春理工大学 | Angular displacement sensor angle detection method based on program-controlled multi-tooth dividing table |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3538103A1 (en) * | 1985-10-26 | 1987-04-30 | Stefan Reich | Position measurement with a laser beam |
| DE4416210C2 (en) * | 1994-05-07 | 1997-05-22 | Rheinmetall Ind Ag | Method and device for determining the roll angle position of a rotating missile |
| CN1527025A (en) * | 2003-09-19 | 2004-09-08 | 南开大学 | Electrooptical angle measurer |
| CN1862221A (en) * | 2005-05-10 | 2006-11-15 | 北京航空航天大学 | Calibrating method for laser self-collimation angle measuring system |
-
2008
- 2008-08-07 CN CNB2008101180383A patent/CN100559114C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3538103A1 (en) * | 1985-10-26 | 1987-04-30 | Stefan Reich | Position measurement with a laser beam |
| DE4416210C2 (en) * | 1994-05-07 | 1997-05-22 | Rheinmetall Ind Ag | Method and device for determining the roll angle position of a rotating missile |
| CN1527025A (en) * | 2003-09-19 | 2004-09-08 | 南开大学 | Electrooptical angle measurer |
| CN1862221A (en) * | 2005-05-10 | 2006-11-15 | 北京航空航天大学 | Calibrating method for laser self-collimation angle measuring system |
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Assignee: Beijing Aerospace Hezhong Technology Development Co.,Ltd. Assignor: BEIJING INSTITUTE OF SPACE MECHANICS & ELECTRICITY Contract record no.: 2012110000051 Denomination of invention: High precision angle-measuring method Granted publication date: 20091111 License type: Exclusive License Open date: 20090107 Record date: 20120316 |
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