CN102607590B - Flexible gyro overload term anti-interference testing device based on optical fiber monitoring - Google Patents
Flexible gyro overload term anti-interference testing device based on optical fiber monitoring Download PDFInfo
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- CN102607590B CN102607590B CN201210043871.2A CN201210043871A CN102607590B CN 102607590 B CN102607590 B CN 102607590B CN 201210043871 A CN201210043871 A CN 201210043871A CN 102607590 B CN102607590 B CN 102607590B
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Abstract
The invention discloses a flexible gyro overload term anti-interference testing device based on optical fiber monitoring and belongs to the technical field of inertia device testing. The testing device comprises a testing erection datum plane, a calibration erection datum plane, a flexible gyro mounting base and an optical fibre gyro mounting base and is machined of a monolithic material; and the flexible gyro mounting base and the optical fibre gyro mounting base are arranged in the testing device, and the testing erection datum plane and the calibration erection datum plane are respectively used for being connected with a large overload device. When the testing device is in use, scale factor calibration of tested shafts of the optical fibre gyro and a flexible gyro and large overload testing of the flexible gyro can be performed through the change of an installation manner. Through adoption of the testing device provided by the invention, an sensitive shaft of the optical fibre gyro and the tested shaft of the flexible gyro can be installed in the same direction; based on the characteristic that the optical fibre gyro is insensitive to environment overload, pure flexible gyro overload error data can be obtained, thereby providing available data for overload term error extraction of the flexible gyro.
Description
Technical field
The invention belongs to inertia device technical field of measurement and test, is an a kind of flexible gyroscope overload anti-interference proving installation based on optical fibre gyro monitoring specifically.
Background technology
Flexible gyroscope is a kind of mechanical type two-degree(s) of freedom gyroscope, is widely used in various Navigation, Guidance and Control systems.In actual applications, in the angular velocity measurement value of flexure gyroscope, exist the drift error producing due to various disturbance torques, generally by static drift error, dynamic deviation error and Random Drift Error etc., formed, the major part that is wherein flexible gyroscope drift error by the kinetic static drift error of line is also the principal element of flexible strapdown inertial navitation system (SINS) error.Usually, flexible gyroscope static drift error is mainly comprised of zero inclined to one side error (irrelevant to environment overload) and a responsive error of specific force (being directly proportional to the first power of environment overload).
Before use, flexible gyroscope must obtain the every coefficient in its error mathematic model through demarcating, and then when navigation is calculated, the measured value of flexible gyroscope is compensated, and eliminates the impact of flexible gyroscope drift error.Common scaling method is to utilize twin shaft or three shaft position platforms, adopts multiposition standardization (8 positions, 24 positions or other multiposition) to obtain zero inclined to one side error term and a specific force error term of flexible gyroscope.For large overload applied environment, overload excitation also will be provided by the hydro-extractor on ground, test obtains the numerical value of the responsive error term coefficient of flexible gyroscope specific force under large overload environment.
Yet the testing apparatus of transshipping greatly is often disturbed because the factors such as rotating shaft is not parallel, device structure part elastic deformation, vibration make to be mingled with angular velocity in linearity overload that it provides.This angular velocity interference meeting is arrived by flexible gyroscope sensitivity, thereby has influence on the test result of the responsive coefficient of flexible gyroscope specific force.If the magnitude of this interference surpasses or when suitable with the responsive error of specific force of flexible gyroscope, cannot obtain the responsive error of specific force of flexible gyroscope.So, must take certain device to eliminate the angular velocity being mingled with in large overload excitation and disturb.
An existing flexible gyroscope overload method of testing is multiposition standardization (list of references [1]～[3]), flexible gyroscope is installed on turntable by switching device, then turntable forwards to behind specific position static, therefore, the not measure of anti-dynamic disturbance of its switching device using, not being suitable for height dynamically has angular velocity to disturb lower flexible Gyro Calibration and test.
List of references [1] method for standardization of optimum 8 positions of flexure gyroscope, Chinese invention patent, application number 200810101156.3, publication number CN101231178A, rich vertical, Wang Lingling, Liu Wenli; Optimum 24 position calibration methods of list of references [2] flexure gyroscope static drift error model, Chinese invention patent, Granted publication CN101377422B, rich vertical, Guo Zhiying, Wang Lingling, Liu Wenli; List of references [3] flexure gyroscope static drift zero degree and primary acceleration continuous item error model optimal position calibration method, Chinese invention patent, application publication number CN101738203A, rich vertical, Wang Xinling, Liu Wenli, Wang Lingling.
Summary of the invention
The object of the invention is in the large overload measurement of flexible gyroscope, utilize this device to realize optical fibre gyro and the coaxial installation of tested flexible gyroscope, by the monitoring of optical fibre gyro, reach the object of the flexible gyroscope disturbance angle velocity that abatement apparatus error causes.
A flexible gyroscope overload anti-interference proving installation based on optical fibre gyro monitoring provided by the invention, comprises test datum clamp face, demarcates datum clamp face, flexible gyroscope mounting base and optical fibre gyro mounting base, by whole block material machining, is formed.Flexible gyroscope mounting base and optical fibre gyro mounting base are arranged on proving installation inside.On described test datum clamp face and demarcation datum clamp face, be all provided with respectively mounting hole, mounting hole is used for and large overload equipment connection.Test datum clamp face and demarcation datum clamp face are orthogonal outer bottom and lateral surface.Optical fibre gyro installed surface on optical fibre gyro mounting base is parallel with demarcation datum clamp face and vertical with test datum clamp face.Flexible gyroscope installed surface on flexible gyroscope mounting base is vertical with demarcation datum clamp face and parallel with test datum clamp face, vertical with optical fibre gyro installed surface.On flexible gyroscope installed surface, be useful on the threaded hole that flexible gyroscope is installed, it is vertical and parallel with optical fibre gyro sensitive axes with demarcation datum clamp face that the position of threaded hole guarantees that flexible gyroscope is installed rear its tested axle.
During use, by the change of mounting means, can carry out the constant multiplier of optical fibre gyro and the tested axle of flexible gyroscope and demarcate, also can carry out the large overload measurement of flexible gyroscope.
The invention has the advantages that:
Realized optical fibre gyro sensitive axes and the tested axle of flexible gyroscope have been installed in the same way, utilize optical fibre gyro to transship insensitive feature to environment, the output of the output of the tested axle of flexible gyroscope and optical fibre gyro is subtracted each other, thereby equipment disturbance angle velocity is removed from flexible gyroscope output, obtain pure flexible gyroscope overload error information, for a flexible gyroscope overload error provides data available.
Accompanying drawing explanation
Fig. 1 a is the perspective view of proving installation of the present invention;
Fig. 1 b is the structural representation of looking up angle of proving installation of the present invention;
Fig. 2 is the scheme of installation of proving installation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
The invention provides an a kind of flexible gyroscope overload anti-interference proving installation based on optical fibre gyro monitoring, as shown in Fig. 1 a, 1b, this installs Cheng “ ∟ generally " shape; comprise test datum clamp face 1, demarcate datum clamp face 2, flexible gyroscope mounting base 3 and optical fibre gyro mounting base 4, by whole block material machining, formed.As shown in Figure 1a, flexible gyroscope mounting base 3 and optical fibre gyro mounting base 4 are arranged on proving installation inside.As shown in Figure 1 b, described test datum clamp face 1 and demarcate on datum clamp face 2 and be all provided with respectively mounting hole 101 and mounting hole 201, test datum clamp face 1 and demarcate datum clamp face 2 Shi “ ∟ " orthogonal outer bottom and the lateral surface of shape device.Optical fibre gyro installed surface 401 on optical fibre gyro mounting base 4 is parallel with demarcation datum clamp face 2 and vertical with test datum clamp face 1.Flexible gyroscope installed surface 301 on flexible gyroscope mounting base 3 is vertical with demarcation datum clamp face 2 and parallel with test datum clamp face 1, vertical with optical fibre gyro installed surface 401.On flexible gyroscope installed surface 301, have four threaded holes 302 of installing for flexible gyroscope, it is vertical and parallel with optical fibre gyro sensitive axes with demarcation datum clamp face 2 that the position of threaded hole 302 guarantees that flexible gyroscope 6 is installed rear its tested axle.During use, demarcation datum clamp face 2 or test datum clamp face 1 contact with the installed surface of large overload equipment 5, as Fig. 2, with screw or bolt, by mounting hole 201 or 101, tighten up.
During use, by the change of mounting means, can carry out the constant multiplier of optical fibre gyro and the tested axle of flexible gyroscope demarcates, also can carry out the large overload measurement of flexible gyroscope, using proving installation of the present invention to monitor with the constant multiplier of optical fibre gyro and the tested axle of flexible gyroscope demarcates, monitoring is installed on the optical fibre gyro installed surface 401 of optical fibre gyro pedestal 4 with optical fibre gyro 7 by screw, tested flexible gyroscope 6 is installed on flexible gyroscope installed surface 301 by screw, while carrying out the constant multiplier test of flexible gyroscope 6, installed surface laminating by the demarcation datum clamp face of device 2 with large overload equipment 5, with screw or bolt, by mounting hole 201, tighten up.After constant multiplier has been tested, proving installation of the present invention is pulled down from large overload equipment 5 together with flexible gyroscope 6 and optical fibre gyro 7, the installed surface laminating that test datum clamp face 1 and large overload equipment 5 are provided, as shown in Figure 2, with screw or bolt, by mounting hole 101, tighten up, just can carry out the large overload measurement of flexible gyroscope.
In proving installation provided by the invention, monitoring is installed in the same way with sensitive axes and the flexible gyroscope measured axis of optical fibre gyro, and installation accuracy can be guaranteed by the machining accuracy installing.
The demarcation datum clamp face 2 of this device is affixed by screw with constant multiplier calibration facility, can be used for the constant multiplier on-site proving of optical fibre gyro and flexible gyroscope measured axis for monitoring.
Claims (3)
1. the flexible gyroscope overload anti-interference proving installation based on optical fibre gyro monitoring, it is characterized in that: comprise test datum clamp face, demarcate datum clamp face, flexible gyroscope mounting base and optical fibre gyro mounting base, by whole block material machining, formed; Test datum clamp face and demarcation datum clamp face are orthogonal outer bottom and lateral surface, be generally " ∟ " shape; flexible gyroscope mounting base and optical fibre gyro mounting base are arranged on proving installation inside; on described test datum clamp face and demarcation datum clamp face, be all provided with respectively mounting hole, mounting hole is used for and large overload equipment connection; Optical fibre gyro installed surface on optical fibre gyro mounting base is parallel with demarcation datum clamp face and vertical with test datum clamp face; Flexible gyroscope installed surface on flexible gyroscope mounting base is vertical with demarcation datum clamp face and parallel with test datum clamp face, vertical with optical fibre gyro installed surface; On flexible gyroscope installed surface, be useful on the threaded hole that flexible gyroscope is installed, it is vertical and parallel with optical fibre gyro sensitive axes with demarcation datum clamp face that the position of threaded hole guarantees that flexible gyroscope is installed rear its tested axle.
2. an a kind of flexible gyroscope overload anti-interference proving installation based on optical fibre gyro monitoring according to claim 1, it is characterized in that: when carrying out the constant multiplier timing signal of optical fibre gyro and the tested axle of flexible gyroscope, monitoring is installed on the optical fibre gyro installed surface of optical fibre gyro pedestal with optical fibre gyro by screw, tested flexible gyroscope is installed on flexible gyroscope installed surface by screw, by demarcating the installed surface laminating of datum clamp face with large overload equipment, with screw or bolt, by mounting hole, tighten up.
3. an a kind of flexible gyroscope overload anti-interference proving installation based on optical fibre gyro monitoring according to claim 1, it is characterized in that: when carrying out the large overload measurement of flexible gyroscope, the installed surface laminating that test datum clamp face and large overload equipment are provided, tightens up by mounting hole with screw or bolt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210043871.2A CN102607590B (en) | 2012-02-24 | 2012-02-24 | Flexible gyro overload term anti-interference testing device based on optical fiber monitoring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210043871.2A CN102607590B (en) | 2012-02-24 | 2012-02-24 | Flexible gyro overload term anti-interference testing device based on optical fiber monitoring |
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| CN102607590A CN102607590A (en) | 2012-07-25 |
| CN102607590B true CN102607590B (en) | 2014-05-07 |
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Families Citing this family (3)
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| CN104567934B (en) * | 2015-01-22 | 2017-05-24 | 中航捷锐（北京）光电技术有限公司 | Jig for vibration test of fiber-optic gyroscope and testing method |
| CN107741239B (en) * | 2017-09-26 | 2020-03-17 | 北京晨晶电子有限公司 | System and method for testing scale factor of gyroscope |
| CN114216478B (en) * | 2021-11-15 | 2023-08-04 | 西安航天精密机电研究所 | Multi-meter test tool for liquid floating gyroscope and installation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231178A (en) * | 2008-02-28 | 2008-07-30 | 北京航空航天大学 | Method for standardization of optimum 8 positions of flexure gyroscope |
| CN101377422A (en) * | 2008-09-22 | 2009-03-04 | 北京航空航天大学 | Method for calibrating optimum 24 positions of flexible gyroscope static drift error model |
| CN101738203A (en) * | 2009-12-08 | 2010-06-16 | 北京航空航天大学 | Optimal position calibration method of static drifting zero and primary acceleration related term error model of flexible gyroscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7467536B2 (en) * | 2005-11-21 | 2008-12-23 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Positioning system for single or multi-axis sensitive instrument calibration and calibration system for use therewith |
| FR2939192B1 (en) * | 2008-11-28 | 2010-12-10 | Sagem Defense Securite | CALIBRATION OF VIBRANT GYROSCOPIC GYROSCOPIC SYSTEMS |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231178A (en) * | 2008-02-28 | 2008-07-30 | 北京航空航天大学 | Method for standardization of optimum 8 positions of flexure gyroscope |
| CN101377422A (en) * | 2008-09-22 | 2009-03-04 | 北京航空航天大学 | Method for calibrating optimum 24 positions of flexible gyroscope static drift error model |
| CN101738203A (en) * | 2009-12-08 | 2010-06-16 | 北京航空航天大学 | Optimal position calibration method of static drifting zero and primary acceleration related term error model of flexible gyroscope |
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Effective date of registration: 20211021 Address after: 421000 Hengshan Science City mangrove R & D Innovation Zone, group 12, Dongfeng Village, Yueping Town, Yanfeng District, Hengyang City, Hunan Province Patentee after: HUNAN SHUAIWEI CONTROL TECHNOLOGY Co.,Ltd. Address before: 100191 No. 37, Haidian District, Beijing, Xueyuan Road Patentee before: BEIHANG University |