Fiber-optic gyroscope loop adhesion fault analysis method
A fault analysis method and fiber optic gyroscope technology, applied in the direction of measuring devices, instruments, etc., can solve problems such as restricting the engineering application of gyroscopes, and achieve the effects of improving environmental adaptability, avoiding burrs, and improving bonding process
Inactive Publication Date: 2019-01-04
TIANJIN NAVIGATION INSTR RES INST
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Problems solved by technology
However, the accuracy of the gyroscopes we use in large quantities is 0.01° / h, and the magnitude of the burrs greatly exceeds the accuracy of the gyroscopes, which seriously restricts the engineering application of gyroscopes and is a problem that must be solved in the engineering application of fiber optic gyroscopes.
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[0018] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that the embodiments are illustrative, not restrictive, and cannot limit the protection scope of the present invention.
[0019] A fiber optic gyroscope ring bonding failure analysis method, comprising the following steps:
[0020] Step 1: Place the bare ring in the magnetic shielding structure without any bonding. Although bonding is not performed, it is also necessary to ensure that the ring is in the magnetic shielding structure and will not slide freely. Then, the pigtails of the ring and waveguide are cured. It is necessary to avoid the burrs caused by the jitter of the pigtails, and to ensure the recovery of the curing and the consistency of the curing before and after bonding. Finally, the relevant wires and waveguides are connected to the photoelectric module at one end. It is necessary to ensure that the inside and outsid...
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The invention relates to a fiber-optic gyroscope loop adhesion fault analysis method. The method comprises the following steps: under the condition that experiment conditions such as fixed loop tail fibers, temperature-changing velocities of an incubator, incubator wind intensities and testing base vibration are constant, comparing differences of gyroscope output at two states that a loop is adhered and not adhered, and furthermore judging that an inappropriate adhesion process of the loop is one of reasons that burr is caused in the fiber-optic gyroscope temperature-changing process. Resultsshow that by improving adhesion processes of the loop, a burr phenomenon in the fiber-optic gyroscope temperature-changing process can be effectively alleviated, and the environment adaptability of the gyroscope can be improved.
Description
technical field [0001] The invention relates to the technical field of fiber optic gyroscopes, in particular to a method for analyzing bonding faults of fiber optic gyroscope rings. Background technique [0002] The fiber optic gyroscope is a fiber optic angular rate sensor based on the Sagnac effect, which has the advantages of small size, high precision, all solid state, long service life, and large dynamic range. The strapdown inertial navigation system based on fiber optic gyroscope has been widely used in aerospace, ship navigation and other fields. [0003] The core angular rate sensitive element of the fiber optic gyroscope is the fiber optic ring, which is wound by curing glue and bonding multiple turns of optical fiber. The optical fiber ring is bonded to the magnetic shielding structure of the gyroscope through a special curing glue bonding process, and then constitutes an optical fiber gyroscope with qualified vibration performance. Due to improper bonding proce...
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IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 张晓明陈桂红刘伯晗郑志胜李茂春惠菲
Owner TIANJIN NAVIGATION INSTR RES INST