CN109883411A - A method of inhibiting optical fibre gyro temperature error or vibration error - Google Patents
A method of inhibiting optical fibre gyro temperature error or vibration error Download PDFInfo
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- CN109883411A CN109883411A CN201910185317.XA CN201910185317A CN109883411A CN 109883411 A CN109883411 A CN 109883411A CN 201910185317 A CN201910185317 A CN 201910185317A CN 109883411 A CN109883411 A CN 109883411A
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Abstract
The present invention relates to a kind of inhibition optical fibre gyro temperature error or the methods of vibration error, utilize the coiling and material parameter of different actual fiber rings, the Geometric Modeling and temperature of fiber optic loop are carried out in finite element analysis software, the simulation calculation of Strain Distribution, different size of value is taken to carry out analog simulation respectively in 1MPa to 1GPa range around the elasticity modulus of ring glue fiber optic loop, obtain temperature error or vibration error curve of the optical fibre gyro when using dual extension-compression modulus around ring glue, to find out so that thermal drift error or vibration output error reach corresponding elasticity modulus when minimum.Fiber optic loop is made around ring glue using this kind, the environmental suitability of optical fibre gyro can be improved under square one.
Description
Technical field
The present invention relates to a kind of methods for inhibiting optical fibre gyro temperature error and vibration error, belong to fiber-optics gyroscope neck
Domain.
Background technique
Optical fibre gyro in practical applications frequently problem first is that output error caused by variation of ambient temperature.
Temperature range when optical fibre gyro works usually at -40 DEG C to 60 DEG C and sometimes can also be with violent temperature change, that is, quick
Heating and cooling process, it includes the macrocyclic thermal drift error that can not ignore that these situations, which can all be such that the stable state of gyro exports,.Light
The fine actual thermal drift error of gyro not only only has traditional Shupe error, should also include caused by fiber optic loop thermal strain
Elasto-optical effect error, and the thermal strain size of the latter, it is close with changing rule of the elasticity modulus around ring glue in complete warm range
It is related.Therefore, it on the basis of Shupe effect errors model, is improved by introducing elasto-optical effect and improves optical fibre gyro
Thermal drift error model analyzes influence of the elasticity modulus to thermal stress distribution around ring glue, and further to gyro final output
The influence of error can improve for the design and craft of fiber optic loop from now on and provide important reference value.
Optical fibre gyro theoretically possessed by all solid state and movement-less part the features such as, so that it is had anti-vibration, anti-impact
The advantages such as hit, be insensitive to acceleration.But in fact, extraneous vibration is often due to the presence of optical fiber elasto-optical effect itself
Make between fiber optic loop and mechanical structure, optical fiber and between ring glue, mutual stress is generated between optical fiber and optical fiber, in turn
Cause optical fiber length deformation occurs simultaneously refractive index can also change, and eventually lead to transmitted in opposite directions in fiber optic loop it is inclined
The light that shakes generates nonreciprocal phase shift error.Vibrating thermal stress caused by caused fiber optic loop internal stress and temperature change is substantially
It is identical.Therefore, 100 p optical fiber gyro output error caused by vibrating can direct thermal drift error caused by analogy thermal stress,
Having also contemplated simultaneously influences brought by optical-fiber deformation.
Summary of the invention
For the above-mentioned prior art, thermal drift can be reduced respectively the technical problem to be solved in the present invention is to provide one kind and is missed
The method for inhibiting optical fibre gyro temperature error or vibration error of difference and vibration output error, so as to improve the environment of optical fibre gyro
Adaptability.
In order to solve the above technical problems, the present invention provides a kind of side for inhibiting optical fibre gyro temperature error or vibration error
Method, comprising the following steps:
Step 1: according to the coiling parameter and material parameter of fiber optic loop, carrying out the Geometric Modeling and temperature, strain of fiber optic loop
The simulation calculation of distribution；
Step 2: by fiber optic loop around ring glue elasticity modulus in the range of 1MPa to 1GPa value carry out analog simulation, obtain
To temperature error or vibration error curve of the optical fibre gyro when using dual extension-compression modulus around ring glue, and then determine so that heat drift
Shift error or vibration output error reach corresponding elasticity modulus when minimum.
As a preferred solution of the present invention: the coiling parameter in step 1 includes ring length, ring diameter, the coiling number of plies
With every layer of the number of turns.
As another preferred embodiment of the invention, the material parameter in step 1 include material properties, specific heat capacity, density,
Thermal conductivity, thermal expansion coefficient, elasticity modulus, Poisson's ratio.
The invention has the advantages that:
The present invention causes the error and elasto-optical effect error of optical-fiber deformation using fiber optic loop Shupe effect errors and by vibration
Symbol is able to use a kind of method and reduces thermal drift error respectively on the contrary, the principle cancelled out each other can be played between the two
Or vibration output error, so that optical fibre gyro is adapted to the occasion more demanding to temperature error and vibration error respectively.
New approaches proposed by the present invention can effectively inhibit the temperature error or vibration error of optical fibre gyro, improve optical fiber
The environmental suitability of gyro.The method is easy to engineering practice, effective on the basis of similar optical fibre gyro can must improve performance, tool
There is higher engineering application value.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 (a) be fiber optic loop around the elasticity modulus of ring glue be 1MPa when, for the optical fibre gyro warm range entirely of 1 parameter of table
Interior thermal drift error curve graph；
Fig. 2 (b) be fiber optic loop around the elasticity modulus of ring glue be 500MPa when, for the full Wen Fan of optical fibre gyro of 1 parameter of table
Enclose interior thermal drift error curve graph；
Fig. 2 (c) be fiber optic loop around the elasticity modulus of ring glue be 1GPa when, for the optical fibre gyro warm range entirely of 1 parameter of table
Interior thermal drift error curve graph；
Fig. 3 be optical fibre gyro by vertical vibration when schematic diagram；
Fig. 4 (a) be fiber optic loop around the elasticity modulus of ring glue be 5MPa when, the vibration for the optical fibre gyro of 1 parameter of table is defeated
Error curve diagram out；
Fig. 4 (b) be fiber optic loop around the elasticity modulus of ring glue be 10MPa when, the vibration for the optical fibre gyro of 1 parameter of table is defeated
Error curve diagram out；
Fig. 4 (c) be fiber optic loop around the elasticity modulus of ring glue be 100MPa when, for the vibration of the optical fibre gyro of 1 parameter of table
Output error curve graph；
Fig. 5 is the vibration error of fiber optic gyro for 1 parameter of table and the relationship around ring glue elasticity modulus.
Specific embodiment
Embodiments of the present invention is further illustrated with reference to the accompanying drawing.
Realization that the present invention adopts the following technical solutions: using the coiling and material parameter of actual fiber ring, by having
Finite element analysis software carries out the emulation of Geometric Modeling and temperature, Strain Distribution to fiber optic loop, using establishing in specific embodiment
Shupe-stress error model, calculate best elasticity modulus of the fiber optic loop around ring glue.By fiber optic loop around the springform of ring glue
Amount takes different size of value respectively in 1MPa to 1GPa range, and data point covers several mainly around the bullet of ring glue in the market as far as possible
Property modulus, carry out analog simulation, obtain optical fibre gyro using dual extension-compression modulus around ring glue when temperature error or vibration miss
Poor curve, to find out so that thermal drift error or vibration output error reach corresponding elasticity modulus when minimum, with this modulus
Design is around ring glue, winding optical fiber ring, to achieve the purpose that reduce error.The originality of this method is to be able to use a kind of method
Thermal drift error and vibration output error are reduced respectively, and optical fibre gyro is adapted to respectively to temperature error or vibration error
More demanding occasion.
It is a kind of by adjusting fiber optic loop around the elasticity modulus of ring glue, the method for reducing optical fibre gyro thermal drift error, including
Following steps:
1) the angular speed error expression of optical fibre gyro Sagnac effect are as follows:
Wherein, preceding two expressions is error caused by thermo-optic effect i.e. Shupe effect, and rear three expressions are bullet light
Error caused by effect.
2) using the coiling and material parameter in table 1, the Geometric Modeling and temperature, strain of fiber optic loop are carried out in COMSOL
The simulation calculation of distribution, by fiber optic loop around the elasticity modulus of ring glue taken respectively in 1MPa to 1GPa range it is different size of be worth into
Row analog simulation obtains temperature error curve of optical fibre gyro when using dual extension-compression modulus around ring glue, such as Fig. 2 (a), Fig. 2
(b), shown in Fig. 2 (c), to find out so that thermal drift error reaches corresponding elasticity modulus when minimum.
The material and coiling parameter of 1 fiber optic loop of table
A kind of method for vibrating output error around the elasticity modulus of ring glue, reduction optical fibre gyro by adjusting fiber optic loop, packet
Include following steps:
1) as shown in figure 3,1 is air layer, 2 be aluminium lid, and 3 be aluminium slot, and 4 be fiber optic coils, the vibration of environment be usually with
The form of SIN function F=Asin (2 π ft) shows, and A and f are the amplitude and frequency vibrated.Because of optical fiber caused by vibrating
Ring internal stress is identical with thermal stress essence caused by temperature change, while considering that optical-fiber deformation bring influences, Sagnac effect
The angular speed error expression answered are as follows:
In above formula, first item indicates error caused by optical-fiber deformation, error caused by rear three expressions elasto-optical effect.
2) using the coiling and material parameter in table 1, the Geometric Modeling and Strain Distribution of fiber optic loop are carried out in COMSOL
Simulation calculation, take different size of value to carry out mould respectively in 1MPa to 1GPa range around the elasticity modulus of ring glue fiber optic loop
Quasi- emulation obtains vibration error curve of optical fibre gyro when using dual extension-compression modulus around ring glue, as Fig. 4 (a), Fig. 4 (b),
Shown in Fig. 4 (c), to find out so that vibrating output error reaches corresponding elasticity modulus when minimum.Fig. 5 summarizes multiple groups optical fiber
The vibration error of gyro and the relationship between ring glue elasticity Moduli data.
Claims (3)
1. a kind of method for inhibiting optical fibre gyro temperature error or vibration error, which comprises the following steps:
Step 1: according to the coiling parameter and material parameter of fiber optic loop, carrying out the Geometric Modeling and temperature, Strain Distribution of fiber optic loop
Simulation calculation；
Step 2: by fiber optic loop around ring glue elasticity modulus in the range of 1MPa to 1GPa value carry out analog simulation, obtain light
Temperature error or vibration error curve of the fine gyro when using dual extension-compression modulus around ring glue, and then determine so that thermal drift misses
Difference or vibration output error reach corresponding elasticity modulus when minimum.
2. a kind of method for inhibiting optical fibre gyro temperature error or vibration error according to claim 1, it is characterised in that:
Coiling parameter described in step 1 includes ring length, ring diameter, the coiling number of plies and every layer of the number of turns.
3. a kind of method for inhibiting optical fibre gyro temperature error or vibration error according to claim 1, it is characterised in that:
Material parameter described in step 1 includes material properties, specific heat capacity, density, thermal conductivity, thermal expansion coefficient, elasticity modulus, Poisson
Than.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595505A (en) * | 2019-09-18 | 2019-12-20 | 哈尔滨工程大学 | Multi-parameter simulation platform for measuring temperature characteristic of optical fiber ring |
| CN113124899A (en) * | 2021-03-23 | 2021-07-16 | 西安航天精密机电研究所 | Method for acquiring variable-temperature scale factor of fiber optic gyroscope based on simulation technology |
| CN113203406A (en) * | 2021-04-29 | 2021-08-03 | 长安大学 | Device and method for inhibiting deformation of optical fiber gyroscope ring assembly in acceleration field |
| CN114279429A (en) * | 2021-12-09 | 2022-04-05 | 中国兵器工业导航与控制技术研究所 | Method for reducing temperature sensitivity of fiber-optic gyroscope |
| CN116046024A (en) * | 2023-03-31 | 2023-05-02 | 中国船舶集团有限公司第七〇七研究所 | Fiber-optic gyroscope drift control method based on elastic modulus difference and fiber-optic gyroscope |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441129A (en) * | 2008-12-25 | 2009-05-27 | 哈尔滨工程大学 | Optical fiber ring performance measuring and evaluating system based on temperature experiment |
| CN101566483A (en) * | 2009-05-22 | 2009-10-28 | 哈尔滨工程大学 | Vibration error compensation method of fiber optic gyro strap-down inertia measurement system |
| CN103256941A (en) * | 2013-04-19 | 2013-08-21 | 中国兵器工业集团第二一四研究所苏州研发中心 | Practical method of high order temperature compensation for MEMS (Micro Electro Mechanical Systems) gyroscope |
-
2019
- 2019-03-12 CN CN201910185317.XA patent/CN109883411A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441129A (en) * | 2008-12-25 | 2009-05-27 | 哈尔滨工程大学 | Optical fiber ring performance measuring and evaluating system based on temperature experiment |
| CN101566483A (en) * | 2009-05-22 | 2009-10-28 | 哈尔滨工程大学 | Vibration error compensation method of fiber optic gyro strap-down inertia measurement system |
| CN103256941A (en) * | 2013-04-19 | 2013-08-21 | 中国兵器工业集团第二一四研究所苏州研发中心 | Practical method of high order temperature compensation for MEMS (Micro Electro Mechanical Systems) gyroscope |
Non-Patent Citations (2)
| Title |
|---|
| 王晓月: "基于温度场的光纤陀螺环圈特征参数研究", 《中国优秀博硕士学位论文全文数据库(硕士) 信息科技辑》 * |
| 郜中星: "光纤陀螺环境误差机理与抑制方法研究", 《中国优秀博硕士学位论文全文数据库(博士) 信息科技辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595505A (en) * | 2019-09-18 | 2019-12-20 | 哈尔滨工程大学 | Multi-parameter simulation platform for measuring temperature characteristic of optical fiber ring |
| CN113124899A (en) * | 2021-03-23 | 2021-07-16 | 西安航天精密机电研究所 | Method for acquiring variable-temperature scale factor of fiber optic gyroscope based on simulation technology |
| CN113124899B (en) * | 2021-03-23 | 2022-09-16 | 西安航天精密机电研究所 | Method for acquiring variable-temperature scale factor of fiber optic gyroscope based on simulation technology |
| CN113203406A (en) * | 2021-04-29 | 2021-08-03 | 长安大学 | Device and method for inhibiting deformation of optical fiber gyroscope ring assembly in acceleration field |
| CN114279429A (en) * | 2021-12-09 | 2022-04-05 | 中国兵器工业导航与控制技术研究所 | Method for reducing temperature sensitivity of fiber-optic gyroscope |
| CN116046024A (en) * | 2023-03-31 | 2023-05-02 | 中国船舶集团有限公司第七〇七研究所 | Fiber-optic gyroscope drift control method based on elastic modulus difference and fiber-optic gyroscope |
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Application publication date: 20190614 |