A Triaxial Fiber Optic Gyroscope Scale Factor Orthogonal Modeling Compensation Method
A fiber optic gyroscope and scaling factor technology, applied to Sagnac effect gyroscopes, instruments, measuring devices, etc., can solve problems such as the inability to complete three orthogonal gyroscope scale modeling and compensation at one time
Active Publication Date: 2022-06-07
TIANJIN NAVIGATION INSTR RES INST
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Problems solved by technology
Usually, for three gyroscopes arranged orthogonally, the scale factor modeling compensation needs to change the orientation sequentially so that a certain gyro sensitive axis is consistent with the rotation axis of the turntable, and the temperature and rotation excitation are applied to obtain the scale factor and temperature The relationship between traversing the three gyroscopes requires three identical operations, and it is impossible to complete the three orthogonal gyroscope scale modeling compensation at the same time.
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[0023] The following embodiments of the present invention are described in detail in conjunction with the accompanying drawings, it should be noted that the present embodiment is descriptive, not restrictive, and cannot limit the scope of protection of the present invention.
[0024] A three-axis fiber optic gyroscope scale factor orthogonal modeling compensation method, the specific steps are:
[0025] as Figure 1 As shown, the orthogonal three-axis optical fiber gyro assembly is assembled on top of a specific fixture, the specific fixture consists of a base plate 3, a support plate 2 and a inclined plate 4, the base plate provides a rotary mounting surface, the support plate is used to connect the base plate and the inclined plate, and the inclined plate and the bottom plate are at a 54.7 ° angle, and the inclined plate provides a three-axis optical fiber gyro assembly mounting surface. The three-axis fiber optic gyro assembly1 is bolted to a specific fixture. The fixture provid...
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The present invention relates to a three-axis optical fiber gyroscope scale factor orthogonal modeling compensation method, comprising the following steps: (1) Assembling the orthogonal three-axis optical fiber gyroscope assembly on a specific tooling fixture, the clamp is an orthogonal three-axis optical fiber gyroscope The component provides a specific angle of inclination, so that the angle between the three-axis gyro sensitive axis and the rotary axis of the turntable is the same; (2) Install the fixture on the turntable plane in the incubator, and the temperature of the incubator will produce a temperature gradient change with the set temperature range and temperature change rate, and the turntable will Rotate continuously at the set rate; ⑶. Turn on the power of the three-axis gyro component, collect and save the three-axis gyro data. This intellectual achievement relates to a three-axis optical fiber gyroscope scale factor orthogonal modeling compensation method, which can simultaneously complete the orthogonally arranged three-axis optical fiber gyroscope scale factor modeling compensation. This achievement is innovative and suitable for popularization and application.
Description
Technical field [0001] The present invention relates to the field of fiber optic gyroscope technology, in particular a three-axis fiber gyroscope scale factor orthogonal modeling compensation method. Background [0002] Fiber optic gyro is a new generation of optical fiber angle speed sensor based on the optical SAGNAC effect, after more than 30 years of development, various key problems restricting the development of fiber optic gyroscope have been gradually solved, and the performance of fiber optic gyroscope has been continuously improved. With its advantages of all solid state, no rotating parts and friction parts, long life, large dynamic range, instantaneous start, simple structure, small size and light weight, the optical fiber gyroscope has gradually replaced the traditional mechanical gyroscope. [0003] Gyroscope is the core of positioning and navigation equipment, the performance, size and cost of the gyroscope determine the performance, size and cost of the entire equ...
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IPC IPC(8): G01C25/00G01C19/72
CPCG01C19/72G01C25/00
Inventor 李茂春惠菲张晓明
Owner TIANJIN NAVIGATION INSTR RES INST