CN201477109U - Dynamical lock-region measuring device of laser gyroscope - Google Patents
Dynamical lock-region measuring device of laser gyroscope Download PDFInfo
- Publication number
- CN201477109U CN201477109U CN2009201674044U CN200920167404U CN201477109U CN 201477109 U CN201477109 U CN 201477109U CN 2009201674044 U CN2009201674044 U CN 2009201674044U CN 200920167404 U CN200920167404 U CN 200920167404U CN 201477109 U CN201477109 U CN 201477109U
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- turntable
- gyro
- rotary table
- laser gyro
- plane
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Abstract
The utility model discloses a dynamical lock-region measuring device of a laser gyroscope, which comprises a rotary table (1), a clamp (2) and the laser gyroscope (3), wherein the laser gyroscope (3) is internally provided with a ring-shaped light path; the normal direction of the plane where the ring-shaped light path is positioned is the direction of a gyroscope sensing axis (4); the rotary table (1) comprises a rotary table plane (5) and the axial direction of the rotary table is the normal direction of the rotary table plane; the clamp (2) is arranged on the rotary table plane (5); the laser gyroscope (3) is arranged on the clamp (2); and the gyroscope sensing axis (4) is vertical to the normal of the rotary table plane (5). Through the vertical design of the laser gyroscope sensing axis and the normal direction of the rotary table plane and ground velocity component change of the gyroscope sensing axis by using the horizontal rotation of a single-shaft rotary table, the dynamical lock-region measuring device of the laser gyroscope realizes the dynamical lock-region measurement of the laser gyroscope, thus having simple structure, convenient operation, higher precision and bigger practical application value.
Description
Technical field
The utility model relates to a kind of laser gyro and dynamically locks the region measurement device.
Background technology
Laser gyro is a kind of accurate angular-rate sensor, and the normal direction on its plane, built-in annular light path place is its sensitive axes direction, is the input angular velocity of laser gyro around its responsive axial rotation.When its sensitive axes direction has certain input angular velocity, to produce frequency difference between suitable, the contrary two bundle laser of laser gyro internal operation, just can obtain the beat signal between the two bundle laser after treatment, this beat signal will produce and the corresponding umber of pulse of input angular velocity behind processing of circuit and counting, and this umber of pulse is the pulse output of laser gyro.In the process of gyro operate as normal, after input angular velocity is less than a certain critical value, the pulse of gyro output will not have response to the variation of input angular velocity, and the size of this critical angular velocity is the dynamic lock district of laser gyro.Therefore by measuring the relation that obtains between laser gyro pulse output and its input angular velocity, just can realize laser gyro is dynamically locked the measurement in district.
See also Fig. 1, it is that the region measurement device is dynamically locked in a kind of prior art laser gyro, and it is made up of a turntable 1 and laser gyro 3.Described turntable 1 has two orthogonal rotating shafts, and one of them is the longitudinal axis vertical with turntable table top 5, outside it can realize horizontally rotating; Another is the transverse axis parallel with turntable table top 5, and it can realize the rotation of turntable 1 above-below direction.And described gyro 3 is fixed on the turntable 1, and its gyro sensitive axes 4 is vertical with turntable table top 5, and is just parallel with the turntable longitudinal axis.
During actual measurement, by the pitching of manual adjustments turntable, and make the gyro sensitive axes local day in determined plane, changing with geographic north, thereby change angle between gyro sensitive axes 4 and earth rotating shaft, on gyro sensitive axes 4, to obtain different input angular velocities.Its twin shaft design yet the region measurement device is dynamically locked in the prior art laser gyro, complex structure, and its pitching adjusted is comparatively loaded down with trivial details, and the sampled point fineness is lower, and the test period is longer, and practicality is not good enough.
The utility model content
Dynamically lock region measurement apparatus structure complexity, complex operation, measuring accuracy is low, practicality is not good enough problem in order to solve the prior art laser gyro, the utility model provides a kind of laser gyro simple in structure, easy to operate, that measuring accuracy is high, practicality is good dynamically to lock the region measurement device.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme: the region measurement device is dynamically locked in a kind of laser gyro, and it comprises a turntable 1, anchor clamps 2 and a laser gyro 3.Wherein, be provided with annular light path in the described laser gyro 3, the normal direction on plane, described annular light path place is gyro sensitive axes 4 directions, and the turntable axial direction of described turntable 1 is the normal direction on its turntable plane 5, and described anchor clamps 2 are arranged on the turntable plane 5.Described laser gyro 3 is arranged on the anchor clamps 2, and described gyro sensitive axes 4 is vertical with the normal direction on turntable plane 5.
There is the space between described laser gyro 3 and the turntable table top 5.
The rotating speed of described turntable 1 was not more than for 0.01 degree/second.
Described gyro sensitive axes 4 and geographic north are 80 to spend to 100 degree to angular range.
The vertical design of region measurement device by laser gyro sensitive axes and turntable table top normal direction dynamically locked in the utility model laser gyro, when making the turntable rotation, to in surface level, the rotate platform rotating shaft rotation of gyro sensitive axes, itself and geographic north to angle will change, thereby on the gyro sensitive axes, can obtain different input angular velocities.Write down the gyro umber of pulse simultaneously, measure the relation of gyro umber of pulse and input angular velocity, and then realize laser gyro is dynamically locked the measurement in district.Because the rotation that the region measurement device can utilize the computer control single axle table is dynamically locked in the utility model laser gyro, thereby can realize the dynamically automatic measurement in lock district, it is simple in structure, easy to operate, and therefore sampled point fineness height has big actual application value.
Description of drawings
Fig. 1 is the structural representation that the region measurement device is dynamically locked in a kind of prior art laser gyro;
Fig. 2 is the structural representation that region measurement device one better embodiment is dynamically locked in the utility model laser gyro,
Wherein, 1-turntable, 2-anchor clamps, 3-laser gyro, 4-gyro sensitive axes, 5-turntable table top.
Embodiment
The utility model is described in further detail below by embodiment:
See also Fig. 2, it is the structural representation that region measurement device one better embodiment is dynamically locked in the utility model laser gyro.In the present embodiment, described laser gyro is dynamically locked the region measurement device and is comprised a turntable 1, anchor clamps 2 and a laser gyro 3.Described turntable 1 comprises a turntable plane 5 and a built-in rotation axis (figure does not show), and its turntable rotor shaft direction is a turntable plane normal direction.Described anchor clamps 2 are arranged on the turntable plane 5, and laser gyro 3 is arranged on the anchor clamps 2, and have the space between laser gyro 3 and the turntable plane 5.Wherein, be provided with annular light path in the described laser gyro 3, the normal direction on plane, described annular light path place is gyro sensitive axes 4 directions, and gyro sensitive axes 4 is vertical with the normal direction on turntable plane 5.
In the present embodiment, described laser gyro locks dynamically that laser gyro 3 is fixed on the described turntable 1 by anchor clamps 2 in the region measurement device.When therefore turntable 1 rotates, can drive horizontally rotating of gyro sensitive axes 4.And because gyro sensitive axes 4 is vertical with the turntable rotor shaft direction, so the turntable rotating shaft does not have active constituent on gyro sensitive axes 4.Input angular velocity Ω on the described gyro sensitive axes 4
InOnly with the component Ω of rotational-angular velocity of the earth at local north orientation
NorthRelevant.
Suppose that the gyro sensitive axes 4 and the initial angle of local north orientation are β
0(might as well get clockwise to just β
0About 80 ° of general values are known normal value in the test), when turntable 1 rotates the β angle, turntable will drive gyro sensitive axes 4 and rotate identical angle in surface level, and this moment, gyro sensitive axes 4 was β+β with the initial angle of local north orientation
0The input angular velocity Ω on gyro sensitive axes 4 directions then
InWith the component Ω of rotational-angular velocity of the earth at local north orientation
NorthThere is following relation: Ω
In=Ω
NorthCos (β+β
0).And rotational-angular velocity of the earth is at the component Ω of local north orientation
NorthRelevant with local latitude, be definite value.Therefore by measuring the angle beta that turntable rotates, can obtain corresponding input angular velocity Ω on gyro sensitive axes 4 directions
InWhen turntable rotated continuously, the umber of pulse that real time record should time period inner laser gyro 3 produces just can obtain umber of pulse and input angular velocity Ω
InRelation curve, thereby can determine that just laser gyro 3 umber of pulses are to input angular velocity Ω
InMaximum angular rate when not having response is to realize laser gyro is dynamically locked the measurement in district.
In addition, in the present embodiment, dynamically lock the region measurement precision in order to improve laser gyro, the rotation of described turntable 1 is that rotational angular was not more than for 0.01 degree/second, thereby helped improving input angular velocity Ω by the accurate stepping control of computing machine
InSampling precision.Simultaneously, in actual measurement, the angle β+β of gyro sensitive axes 4 and local north orientation
0Interval is 80 °～100 °, therefore works as β
0When getting 80 °, the angle beta scope of therefore testing intermediate station 1 rotation is 0 °～20 °.
In sum, the vertical design of region measurement device by laser gyro sensitive axes and turntable plane normal direction dynamically locked in the utility model laser gyro, realized on single shaft speed platform, laser gyro dynamically being locked the measurement in district, simultaneously by therefore simple in structure, easy to operate.And accurately control horizontally rotating of turntable by computing machine, therefore have degree of precision and big actual application value.
Claims (4)
1. the region measurement device is dynamically locked in a laser gyro, it comprises a turntable [1], anchor clamps [2] and a laser gyro [3], wherein, described laser gyro is provided with annular light path in [3], the normal direction on plane, described annular light path place is gyro sensitive axes [a 4] direction, the turntable axial direction of described turntable [1] is the normal direction on its turntable plane [5], described anchor clamps [2] are arranged on the turntable plane [5], it is characterized in that: described laser gyro [3] is arranged on the anchor clamps [2], and described gyro sensitive axes [4] is vertical with the normal direction of turntable plane [5].
2. the region measurement device is dynamically locked in laser gyro according to claim 1, it is characterized in that: have the space between described laser gyro [3] and the turntable table top [5].
3. the region measurement device is dynamically locked in laser gyro according to claim 2, it is characterized in that: the rotating speed of described turntable [1] was not more than for 0.01 degree/second.
4. the region measurement device is dynamically locked in laser gyro according to claim 3, it is characterized in that: described gyro sensitive axes [4] and geographic north are 80 to spend to 100 degree to angular range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201674044U CN201477109U (en) | 2009-07-23 | 2009-07-23 | Dynamical lock-region measuring device of laser gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201674044U CN201477109U (en) | 2009-07-23 | 2009-07-23 | Dynamical lock-region measuring device of laser gyroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477109U true CN201477109U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201674044U Expired - Fee Related CN201477109U (en) | 2009-07-23 | 2009-07-23 | Dynamical lock-region measuring device of laser gyroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477109U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012237A (en) * | 2010-12-13 | 2011-04-13 | 西安北方捷瑞光电科技有限公司 | Method for testing dynamic lock area of prismatic laser gyro |
| CN104713543A (en) * | 2013-12-11 | 2015-06-17 | 中国航空工业第六一八研究所 | Method for preciously measuring dynamic lock region of laser gyroscope |
| CN108955726A (en) * | 2018-07-25 | 2018-12-07 | 中国航空工业集团公司西安飞行自动控制研究所 | A method of determining dynamic locking area size |
-
2009
- 2009-07-23 CN CN2009201674044U patent/CN201477109U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012237A (en) * | 2010-12-13 | 2011-04-13 | 西安北方捷瑞光电科技有限公司 | Method for testing dynamic lock area of prismatic laser gyro |
| CN104713543A (en) * | 2013-12-11 | 2015-06-17 | 中国航空工业第六一八研究所 | Method for preciously measuring dynamic lock region of laser gyroscope |
| CN108955726A (en) * | 2018-07-25 | 2018-12-07 | 中国航空工业集团公司西安飞行自动控制研究所 | A method of determining dynamic locking area size |
| CN108955726B (en) * | 2018-07-25 | 2021-09-14 | 中国航空工业集团公司西安飞行自动控制研究所 | Method for judging size of dynamic lock area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20160723 |