CN115824264B - Method for evaluating and improving process reliability of hollow microstructure fiber-optic gyroscope - Google Patents
Method for evaluating and improving process reliability of hollow microstructure fiber-optic gyroscope Download PDFInfo
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Abstract
The invention relates to the technical field of reliability evaluation of fiber-optic gyroscopes, in particular to a method for evaluating and improving the process reliability of a hollow microstructure fiber-optic gyroscope, which comprises the following steps: establishing a process reliability evaluation equation of the hollow microstructure fiber-optic gyroscope, and determining through experiments
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Corresponding optimal parameters; will be
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Substituting the evaluation value into a reliability evaluation equation to calculate the evaluation value of the process reliability of the hollow microstructure fiber-optic gyroscope
Description
Technical Field
The invention relates to the technical field of reliability evaluation of fiber-optic gyroscopes, in particular to a method for evaluating and improving the process reliability of a hollow microstructure fiber-optic gyroscope.
Background
The fiber optic gyroscope has the advantages of high reliability, impact vibration resistance, long service life, high starting speed and the like as a novel optical gyroscope instrument, and is widely applied to a plurality of military and civil fields. However, when the temperature of the working environment of the fiber-optic gyroscope changes, thermally-induced non-differential phase noise, namely a SHUPE error, is generated in a fiber-optic annular sensor (simply referred to as a fiber-optic annular ring) of a core component of the fiber-optic gyroscope. This error is indistinguishable from the SANAC effect of the fiber optic gyroscope to sense the earth rotation speed, and the actual detection accuracy of the fiber optic gyroscope is seriously reduced. The hollow microstructure fiber optic gyroscope is a novel fiber optic gyroscope which adopts hollow microstructure fiber to wind an optical fiber ring. The difficulty of looping the optical fiber ring by adopting the hollow microstructure optical fiber is high, the winding period is long, the cost is high, and the quality of the optical fiber ring is a key factor influencing the reliability of the optical fiber gyroscope. The main factors influencing the quality of the hollow microstructure optical fiber ring not only comprise the intrinsic characteristics of the materials of each component such as the hollow microstructure optical fiber of the optical fiber ring, the solidified colloid and the like, but also comprise various technological parameters of winding the hollow microstructure optical fiber ring, such as: the quality of the optical fiber ring cannot be ensured if the parameters such as winding process parameters, colloid sizing parameters, curing parameters, debonding process parameters and the like are poorly controlled, and the reliability of the optical fiber gyroscope can be greatly affected. Therefore, the reliability of the fiber optic gyroscope can be more accurately evaluated only from the process reliability of the fiber optic loop, the evaluation result is more reliable, and the reliability of the fiber optic gyroscope can be improved by manufacturing the fiber optic gyroscope through the optimal parameters obtained in the evaluation process.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope, which starts from the process reliability of the fiber-optic loop, controls the process parameters of the fiber-optic loop, evaluates the reliability of the fiber-optic gyroscope accurately, and utilizes the optimal parameters obtained in the evaluation process to manufacture the fiber-optic gyroscope, thereby improving the process reliability of the fiber-optic gyroscope.
The invention is realized by the following technical scheme:
a method for evaluating and improving the process reliability of a hollow microstructure fiber-optic gyroscope comprises the following steps:
s1: establishing a process reliability evaluation equation of the hollow microstructure fiber-optic gyroscope as formula (1):
wherein:
evaluation value of process reliability of hollow microstructure fiber-optic gyroscope>
Is the evaluation value of the reliability of the rewinding process of the hollow microstructure optical fiber, and is +.>
Is the evaluation value of the reliability of the fiber-separating process on the hollow microstructure fiber, and is +.>
Evaluation value of low tension high symmetry degree winding process reliability for hollow microstructure optical fiber, < +.>
For evaluation of the reliability of the sizing process, < +.>
For evaluation of the reliability of the curing process, +.>
For the evaluation of the reliability of the deboning process, < > >
The evaluation value of the reliability of the bonding process is adopted;
s2: under the condition that the technological parameters of other working procedures are unchanged, the rewinding tension of the rewinding working procedure is changed to form a plurality of optical fiber rings, and the evaluation value of the reliability of the rewinding process of the hollow microstructure optical fiber under the optimal rewinding tension is obtained
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, changing the upper fiber splitting tension of the upper fiber splitting working procedure to prepare a plurality of optical fiber rings, and obtaining the evaluation value of the upper fiber splitting process reliability of the hollow microstructure optical fiber under the optimal upper fiber splitting tension>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the winding tension of the low-tension high-symmetry winding working procedure is changed to manufacture a plurality of optical fiber rings, and the evaluation value of the reliability of the low-tension high-symmetry winding technology of the hollow microstructure optical fiber under the optimal winding tension is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the winding speed of the sizing working procedure is changed to form a plurality of optical fiber rings, and an evaluation value of the reliability of the sizing technology at the optimal winding speed is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the curing time of the curing working procedure is changed to form a plurality of optical fiber rings, and an evaluation value of the curing process reliability under the optimal curing time is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other procedures are unchanged, the bone-removing tension of the bone-removing procedure is changed to form a plurality of optical fiber rings, and an evaluation value of the bone-removing process reliability under the optimal bone-removing tension is obtained >
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the thickness of the adhesive glue of the adhesive working procedure is changed to form a plurality of optical fiber rings, and the evaluation value of the reliability of the adhesive working procedure under the optimal adhesive glue thickness is obtained>
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S3: calculated by S2
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Substituting the evaluation value into the (1) to calculate the evaluation value of the process reliability of the hollow microstructure fiber-optic gyroscope>
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S4: in the manufacturing process of the later-stage hollow microstructure fiber-optic gyroscope, the optical fiber ring is manufactured by adopting the optimal rewinding tension, the optimal fiber-feeding fiber-dividing tension, the optimal winding speed, the optimal curing time, the optimal bone-removing tension and the optimal adhesive thickness in the S2, and then the fiber ring tail fiber and the Y waveguide tail fiber are connected to form the hollow microstructure fiber-optic gyroscope.
Further, S2 evaluation value of reliability of hollow-core microstructure optical fiber rewinding process
The method is characterized by comprising the following steps: under the condition that the technological parameters of other procedures are unchanged and the rewinding tension is changed within a set range in the rewinding procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings under each rewinding tension, then the full-temperature zero deviation and the scale factors of the optical fiber rings under each rewinding tension are tested, and the number of qualified optical fiber ring samples after the preparation is recorded >
Then placing the qualified optical fiber rings prepared under different rewinding tensions in different test boxes for accelerated aging tests, and taking out the optical fiber rings after the set time is reached to perform all-temperature zero offset and scale factor tests respectively to obtain the number of unqualified optical fiber rings subjected to reliability aging tests under different rewinding tensions +.>
Then calculating the reliability of the hollow microstructure optical fiber rewinding process under different rewinding tensions according to the formula (2)>
And selecting all the tension of the rewinding>
Is used as the evaluation value of the reliability of the hollow microstructure optical fiber rewinding process>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
And rewinding the hollow microstructure optical fiber with the optimal rewinding tension when the rewinding tension is at the maximum value:
further, the evaluation value of the reliability of the fiber splitting process on the S2 hollow-core microstructure optical fiber
The method is characterized by comprising the following steps: under the condition that the technological parameters of other working procedures are unchanged and the upper fiber splitting tension is changed within a set range in the upper fiber splitting working procedure, the hollow microstructure optical fiber is respectively manufactured into a plurality of optical fiber loops under each upper fiber splitting tension, then the full-temperature zero deviation and the scale factors of the plurality of optical fiber loops under different upper fiber splitting tensions are tested, and the number of qualified optical fiber loop samples after the preparation is recorded >
Then placing qualified optical fiber rings prepared under different upper fiber splitting tensions in different test boxes for accelerated aging tests, and taking out the optical fiber rings after the set time period is reached to respectively perform full-temperature zero offset and scale factor tests to obtain the number of unqualified optical fiber ring samples after reliability aging tests under different upper fiber splitting tensions>
Then, according to the step (3), calculating the upper fiber and the lower fiber of the hollow microstructure optical fiber under different upper fiber and lower fiber dividing tensionsOrder reliability->
And selecting all the upper fibers under the tension of the upper fibers>
Is used as the evaluation value of the reliability of the fiber-separating process on the hollow microstructure fiber +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
And (3) carrying out upper fiber splitting on the hollow microstructure optical fiber by using the upper fiber splitting tension at the maximum value as the optimal upper fiber splitting tension: />
Further, S2 evaluation value of low-tension high-symmetry winding process reliability of hollow-core microstructure optical fiber
The method is characterized by comprising the following steps: under the condition that the process parameters of other procedures are unchanged, the winding tension is changed within a set range in the low-tension high-symmetry winding procedure, the hollow microstructure optical fiber is respectively manufactured into a plurality of optical fiber loops under each winding tension, then the full-temperature zero deviation and the scale factors of the plurality of optical fiber loops under different winding tensions are tested, and the number of qualified optical fiber loop samples after the preparation is recorded >
Then placing the qualified optical fiber rings after preparation under different winding tensions in different test boxes for accelerated aging tests, and taking out the optical fiber rings after the preparation under different winding tensions for full-temperature zero offset and scale factor tests respectively after the set time period is reached to obtain the number of unqualified optical fiber ring samples after reliability aging tests under different winding tensions>
Then, according to the step (4), the reliability of the low-tension high-symmetry winding process of the hollow microstructure optical fiber under different winding tensions is calculated>
And selecting all the winding tension>
The maximum value of (2) is used as the evaluation value of the reliability of the low-tension high-symmetry winding process of the hollow microstructure optical fiber +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
And the winding tension at the maximum value is the optimal winding tension, and the hollow microstructure optical fiber is subjected to low-tension high-symmetry winding:
further, evaluation value of reliability of sizing process in S2
The method is characterized by comprising the following steps: under the condition that the process parameters of other procedures are unchanged and the winding speed is changed within a set range in the sizing procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings at each winding speed, then the full-temperature zero offset and the scale factors of the plurality of optical fiber rings at different winding speeds are tested, and the number of qualified optical fiber ring samples after the preparation is recorded >
Then placing qualified optical fiber rings prepared at different winding speeds in different test boxes for accelerated aging test, taking out the optical fiber rings after reaching a set time period, and respectively carrying out full-temperature zero offset and scale factor test to obtain reliability aged solid at different winding speedsNumber of failed fiber loop samples after inspection +.>
Then, according to the formula (5), the reliability of the sizing process of the hollow microstructure optical fiber at different winding speeds is calculated>
And selecting all winding speeds +.>
Maximum value as evaluation value for the reliability of the sizing process +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
Sizing the hollow microstructured optical fiber with the winding speed at the maximum value being the optimal winding speed:
further, evaluation value of curing process reliability in S2
The method is characterized by comprising the following steps: under the condition that the process parameters of other procedures are unchanged and the curing time is changed within a set range in the curing procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings under each curing time, then the full-temperature zero deviation and the scale factors of the optical fiber rings under different curing times are tested, and the number of qualified optical fiber ring samples after the preparation is recorded >
Then placing the qualified optical fiber ring after preparation under different curing time in different test boxes for accelerated aging test, and taking out the optical fiber ring after reaching the set time period for full-temperature zero offset and scale factor test respectively to obtain the optical fiber ring with different curing timeThe number of failed fiber loop samples after the reliability aging test>
Then, according to the formula (6), the reliability of the sizing process of the hollow microstructure optical fiber at different winding speeds is calculated>
And selecting all curing times +.>
Is used as an evaluation value for the reliability of the curing process +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The curing time at the maximum value is the optimal curing time for curing the hollow microstructure optical fiber loop:
further, evaluation value of deboning process reliability in S2
The method is characterized by comprising the following steps: under the condition that technological parameters of other procedures are unchanged and the deboning tension is changed within a set range in the deboning procedure, the hollow microstructure optical fiber is respectively manufactured into a plurality of optical fiber loops under each deboning tension, then the full-temperature zero offset and the scale factors of the plurality of optical fiber loops under different deboning tensions are tested, and the number of qualified optical fiber loop samples after the preparation is recorded >
Then placing the qualified optical fiber rings prepared under different bone removal tensions in different test boxes for accelerated aging test, and taking out the optical fiber rings after reaching a set time period for full-temperature zero deviation and standard markingThe degree factor test is carried out to obtain the unqualified fiber loop sample number +.>
Then, according to the formula (7), the reliability of the hollow microstructure optical fiber sizing procedure under different bone-removing tensions is calculated>
And selecting all +.>
Maximum value of the deboning process reliability as evaluation value +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The deboning tension at the maximum value is the optimal deboning tension for deboning the hollow microstructure fiber loop:
further, in S2, the evaluation value of the reliability of the bonding process
The method is characterized by comprising the following steps: under the condition that technological parameters of other working procedures are unchanged and the thickness of adhesive is changed in a set range in the adhesive working procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings at each adhesive thickness, then the full-temperature zero offset and the scale factors of the optical fiber rings at different adhesive thicknesses are tested, and the number of qualified optical fiber ring samples after the preparation is recorded >
Then placing qualified optical fiber rings prepared under different adhesive thicknesses in different test boxes for accelerated aging test, and reaching the set timeTaking out the optical fiber after interval and respectively carrying out full-temperature zero offset and scale factor test to obtain the number of unqualified optical fiber ring samples after reliability aging experiments under different adhesive thicknesses>
Then, the reliability of the hollow microstructure optical fiber bonding process under different bonding adhesive thicknesses is calculated according to the formula (8)>
And selecting the thickness of all adhesive>
As an evaluation value for the reliability of the bonding process
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The adhesive thickness at the maximum value is the optimal adhesive thickness, and the hollow microstructure optical fiber ring is bonded:
optimally, the fiber optic loop was placed in the test chamber for 30 natural days for accelerated aging testing.
The invention has the beneficial effects that:
according to the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope, provided by the invention, the process parameters of the fiber-optic loop are controlled from the process reliability of the fiber-optic loop, the reliability of the fiber-optic gyroscope is accurately evaluated, and the optimal parameters obtained in the evaluation process are utilized to manufacture the fiber-optic gyroscope, so that the process reliability of the fiber-optic gyroscope is improved.
Detailed Description
A method for evaluating and improving the process reliability of a hollow microstructure fiber-optic gyroscope comprises the following steps:
s1: establishing a process reliability evaluation equation of the hollow microstructure fiber-optic gyroscope as formula (1):
wherein:
evaluation value of process reliability of hollow microstructure fiber-optic gyroscope>
Is the evaluation value of the reliability of the rewinding process of the hollow microstructure optical fiber, and is +.>
Is the evaluation value of the reliability of the fiber-separating process on the hollow microstructure fiber, and is +.>
Evaluation value of low tension high symmetry degree winding process reliability for hollow microstructure optical fiber, < +.>
For evaluation of the reliability of the sizing process, < +.>
For evaluation of the reliability of the curing process, +.>
For the evaluation of the reliability of the deboning process, < >>
The evaluation value of the reliability of the bonding process is adopted; the process reliability of the hollow microstructure fiber-optic gyroscope is organically related with the process reliability of the fiber-optic ring by establishing a process reliability evaluation equation of the hollow microstructure fiber-optic gyroscope, and the reliability of each process of the fiber-optic ring is effectively evaluated by controlling the process parameters of the core component-the fiber-optic ring of the fiber-optic gyroscope, so that the process reliability of the fiber-optic gyroscope according to the hollow microstructure is further improvedThe process reliability of the fiber-optic gyroscope can be effectively and accurately evaluated by the performance evaluation equation.
S2: under the condition that the technological parameters of other working procedures are unchanged, the rewinding tension of the rewinding working procedure is changed to form a plurality of optical fiber rings, and the evaluation value of the reliability of the rewinding process of the hollow microstructure optical fiber under the optimal rewinding tension is obtained
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, changing the upper fiber splitting tension of the upper fiber splitting working procedure to prepare a plurality of optical fiber rings, and obtaining the evaluation value of the upper fiber splitting process reliability of the hollow microstructure optical fiber under the optimal upper fiber splitting tension>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the winding tension of the low-tension high-symmetry winding working procedure is changed to manufacture a plurality of optical fiber rings, and the evaluation value of the reliability of the low-tension high-symmetry winding technology of the hollow microstructure optical fiber under the optimal winding tension is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the winding speed of the sizing working procedure is changed to form a plurality of optical fiber rings, and an evaluation value of the reliability of the sizing technology at the optimal winding speed is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the curing time of the curing working procedure is changed to form a plurality of optical fiber rings, and an evaluation value of the curing process reliability under the optimal curing time is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other procedures are unchanged, the bone-removing tension of the bone-removing procedure is changed to form a plurality of optical fiber rings, and an evaluation value of the bone-removing process reliability under the optimal bone-removing tension is obtained >
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the bonding adhesive of the bonding working procedure is changedThe thickness of the adhesive is made into a plurality of optical fiber rings, and the evaluation value of the reliability of the bonding process under the optimal bonding adhesive thickness is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the The method can accurately evaluate the reliability of each process of the core component-optical fiber ring in the manufacturing process of the optical fiber gyro.
S3: calculated by S2
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、/>
、/>
、/>
、/>
、/>
Substituting the evaluation value into the (1) to calculate the evaluation value of the process reliability of the hollow microstructure fiber-optic gyroscope>
The method comprises the steps of carrying out a first treatment on the surface of the The process reliability of the fiber optic gyroscope thus evaluated is more efficient.
S4: in the manufacturing process of the later-stage hollow microstructure fiber-optic gyroscope, the optical fiber ring is manufactured by adopting the optimal rewinding tension, the optimal fiber-feeding fiber-dividing tension, the optimal winding speed, the optimal curing time, the optimal bone-removing tension and the optimal adhesive thickness in the S2, and then the fiber ring tail fiber and the Y waveguide tail fiber are connected to form the hollow microstructure fiber-optic gyroscope.
In the manufacturing process of the fiber-optic gyroscope, the reliability of the manufactured fiber-optic gyroscope is obviously improved by controlling various parameters of a fiber-optic gyroscope core component, namely a fiber-optic ring. The fiber optic gyroscope comprises a light source, a coupler, a detector and a modem besides the fiber optic ring and the Y waveguide, and the connection relation among the components belongs to the prior art and is not repeated. Because the influence of the components on the reliability of the fiber optic gyroscope is small and on-site manufacturing is not needed, the components are not considered, the process parameters of the fiber optic loop are controlled only from the process reliability of the fiber optic loop, the reliability of the fiber optic gyroscope is accurately evaluated, and the manufacturing of the fiber optic gyroscope is carried out by utilizing the optimal parameters obtained in the evaluation process, so that the process reliability of the fiber optic gyroscope can be greatly improved.
Further, S2 evaluation value of reliability of hollow-core microstructure optical fiber rewinding process
The method is characterized by comprising the following steps: under the condition that the technological parameters of other procedures are unchanged and the rewinding tension is changed within a set range in the rewinding procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings under each rewinding tension, then the full-temperature zero deviation and the scale factors of the optical fiber rings under each rewinding tension are tested, and the number of qualified optical fiber ring samples after the preparation is recorded>
Then placing the qualified optical fiber rings prepared under different rewinding tensions in different test boxes for accelerated aging tests, and taking out the optical fiber rings after the set time is reached to perform all-temperature zero offset and scale factor tests respectively to obtain the number of unqualified optical fiber rings subjected to reliability aging tests under different rewinding tensions +.>
Then calculating the reliability of the hollow microstructure optical fiber rewinding process under different rewinding tensions according to the formula (2)>
And selecting all the tension of the rewinding>
Is used as the evaluation value of the reliability of the hollow microstructure optical fiber rewinding process>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
And rewinding the hollow microstructure optical fiber with the optimal rewinding tension when the rewinding tension is at the maximum value:
The test method is adopted to determine the evaluation value of the reliability of the hollow microstructure optical fiber rewinding process
The method can be used for evaluating the process reliability of the fiber optic gyroscope, and can obtain the optimal rewinding tension value when the reliability evaluation value of the hollow microstructure fiber optic rewinding process is maximum, so that the optimal rewinding tension value is adopted to rewind the hollow microstructure fiber optic gyroscope in the manufacturing process of a core component-fiber ring of the fiber optic gyroscope in the later period, and the reliability of the fiber optic gyroscope can be improved.
The specific test method takes the rewinding tension as an example, 0.5 gram force, 1 gram force and 2 gram force are respectively adopted, and 10 optical fiber loops are adopted as the example for different rewinding tensions to carry out the test: under the condition that other parameters are unchanged, the prepared optical fiber ring is subjected to full-temperature zero offset and scale factor test, and the full-temperature zero offset and scale test of the prepared optical fiber ring is qualified because the adopted rewinding tension is in a set range, namely a reasonable range. The specific full-temperature zero offset and scale test method belongs to the prior art and is not repeated. However, the optical fiber loop made by adopting different rewinding tensions has different ageing resistance, so that the qualified samples after ageing resistance test are different, and each rewinding tension can be calculated by using the formula (2) Reliability value of rewinding process under force
And can get +.>
The optimal rewinding tension value corresponding to the maximum value is shown in table 1:
TABLE 1
Here, the
Then 0.9 and the corresponding optimal rewinds tension value is 1 gram force.
Further, the evaluation value of the reliability of the fiber splitting process on the S2 hollow-core microstructure optical fiber
The method is characterized by comprising the following steps: under the condition that the technological parameters of other working procedures are unchanged and the upper fiber splitting tension is changed within a set range in the upper fiber splitting working procedure, the hollow microstructure optical fiber is respectively manufactured into a plurality of optical fiber loops under each upper fiber splitting tension, then the full-temperature zero deviation and the scale factors of the plurality of optical fiber loops under different upper fiber splitting tensions are tested, and the number of qualified optical fiber loop samples after the preparation is recorded>
Then placing qualified optical fiber rings prepared under different upper fiber splitting tensions in different test boxes for accelerated aging tests, and taking out the optical fiber rings after the set time period is reached to respectively perform full-temperature zero offset and scale factor tests to obtain the number of unqualified optical fiber ring samples after reliability aging tests under different upper fiber splitting tensions>
Then calculating the upper fiber components of the hollow microstructure optical fiber under different upper fiber component tension according to the formula (3) Fiber process reliability->
And selecting all the upper fibers under the tension of the upper fibers>
Is used as the evaluation value of the reliability of the fiber-separating process on the hollow microstructure fiber +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
And (3) carrying out upper fiber splitting on the hollow microstructure optical fiber by using the upper fiber splitting tension at the maximum value as the optimal upper fiber splitting tension:
the test method is adopted to determine the evaluation value of the reliability of the fiber-separating process on the hollow microstructure fiber
The method can be used for evaluating the process reliability of the fiber optic gyroscope, and can obtain the optimal upper fiber splitting tension value when the evaluation value of the process reliability of the upper fiber splitting process of the hollow microstructure fiber is maximum, so that the upper fiber splitting is carried out on the hollow microstructure fiber by adopting the optimal upper fiber splitting tension value in the manufacturing process of a core component-fiber ring of the fiber optic gyroscope in the later stage, and the reliability of the fiber optic gyroscope can be improved.
The specific test method adopts 1 gram force, 1.5 gram force and 2 gram force as examples of the fiber splitting tension, and 5 fiber loops are adopted as examples of the fiber splitting tension for different fiber splitting tensions to carry out the test: under the condition that other parameters are unchanged, the prepared optical fiber ring is subjected to full-temperature zero offset and scale factor test, and the full-temperature zero offset and scale test of the prepared optical fiber ring is qualified because the adopted upper fiber splitting tension is in a set range, namely a reasonable range. Tool with The full-temperature zero offset and scale test method of the body belongs to the prior art and is not repeated. However, the fiber loops manufactured by adopting different upper fiber splitting tensions have different ageing resistance, so that the qualified samples after ageing resistance test are different, and the reliability value of the upper fiber splitting process under each upper fiber splitting tension can be calculated by using the formula (3)
And can get +.>
The maximum value corresponds to the optimal upper fiber splitting tension value, and the specific test results are shown in table 2:
TABLE 2
Here, the
Then 1, and the corresponding optimum upper fiber splitting tension value is 1.5 gram force.
Further, S2 evaluation value of low-tension high-symmetry winding process reliability of hollow-core microstructure optical fiber
The method is characterized by comprising the following steps: under the condition that the process parameters of other procedures are unchanged, the winding tension is changed within a set range in the low-tension high-symmetry winding procedure, the hollow microstructure optical fiber is respectively manufactured into a plurality of optical fiber loops under each winding tension, then the full-temperature zero deviation and the scale factors of the plurality of optical fiber loops under different winding tensions are tested, and the number of qualified optical fiber loop samples after the preparation is recorded>
Then placing qualified optical fiber rings prepared under different winding tensions in different test boxes for accelerated aging test, and taking out the optical fiber rings after reaching a set time period for full-temperature zero offset and scale factor measurement Testing to obtain unqualified fiber loop sample number +.>
Then, according to the step (4), the reliability of the low-tension high-symmetry winding process of the hollow microstructure optical fiber under different winding tensions is calculated>
And selecting all the winding tension>
The maximum value of (2) is used as the evaluation value of the reliability of the low-tension high-symmetry winding process of the hollow microstructure optical fiber +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
And the winding tension at the maximum value is the optimal winding tension, and the hollow microstructure optical fiber is subjected to low-tension high-symmetry winding:
the test method is adopted to determine the evaluation value of the reliability of the low-tension high-symmetry winding process of the hollow microstructure optical fiber
The method can be used for evaluating the process reliability of the fiber-optic gyroscope, and can obtain the optimal winding tension value when the evaluation value of the low-tension high-symmetry winding process reliability of the hollow microstructure fiber is maximum, so that the low-tension high-symmetry winding of the hollow microstructure fiber is carried out by adopting the optimal winding tension value in the manufacturing process of a core component-fiber ring of the fiber-optic gyroscope in the later stage, and the reliability of the fiber-optic gyroscope can be improved.
The specific test method takes 1 gram force, 1.5 gram force and 2 gram force as examples of winding tension respectively, and the winding tension is different The test was conducted using 10 fiber optic loops as an example for the winding tension: under the condition that other parameters are unchanged, the prepared optical fiber ring is subjected to full-temperature zero offset and scale factor test, and the adopted winding tension is in a set range, namely a reasonable range, so that the full-temperature zero offset and scale test of the prepared optical fiber ring is qualified. The specific full-temperature zero offset and scale test method belongs to the prior art and is not repeated. However, the optical fiber loop manufactured by adopting different winding tensions has different ageing resistance, so that the qualified sample numbers after the ageing resistance test is carried out on the optical fiber loop are different, and the reliability value of the low-tension high-symmetry winding process under each winding tension can be calculated by using the formula (4)
And can get +.>
The maximum value corresponds to the optimal winding tension value, and the specific test results are shown in table 3:
TABLE 3 Table 3
Here, the
The optimal winding tension value is 0.9, and the corresponding optimal winding tension value is 2 gram force, so that the lower the winding tension is, the smaller the influence on the hollow microstructure optical fiber is, but the lower the winding tension is, the winding efficiency is seriously influenced, the arrangement precision of the optical fiber is reduced to a certain extent, and therefore, a plurality of groups of winding tension tests are required to be carried out, and the optimal winding tension of the reliability of the winding process is determined.
Further, evaluation value of reliability of sizing process in S2
The method is characterized by comprising the following steps: under the condition that the technological parameters of other working procedures are unchanged and the winding speed is changed within a set range in the sizing working procedure, the hollow micro-structure optical fiber is arranged in each typeRespectively manufacturing a plurality of optical fiber rings at winding speeds, then testing all-temperature zero offset and scale factors of the plurality of optical fiber rings at different winding speeds, and recording the qualified number of optical fiber ring samples after the preparation is completed +.>
Then placing the qualified optical fiber rings prepared at different winding speeds in different test boxes for accelerated aging test, and taking out the optical fiber rings after the preparation is completed for a set period of time to respectively perform full-temperature zero offset and scale factor test to obtain the number of unqualified optical fiber ring samples after the reliability aging test at different winding speeds>
Then, according to the formula (5), the reliability of the sizing process of the hollow microstructure optical fiber at different winding speeds is calculated>
And selecting all winding speeds +.>
Maximum value as evaluation value for the reliability of the sizing process +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
Sizing the hollow microstructured optical fiber with the winding speed at the maximum value being the optimal winding speed:
The test method is adopted to determine the evaluation value of the reliability of the sizing process
The method can be used for evaluating the process reliability of the fiber optic gyroscope and can also obtain the evaluation of the process reliability of the gluing process of the fiber optic ringThe optimal winding speed value at the maximum estimated value. Since the sizing process colloid parameters have been determined, the flowability of the colloid has been determined and the speed of winding is critical to the sizing uniformity and sizing amount during the sizing process. Therefore, in the manufacturing process of the core component-optical fiber ring of the optical fiber gyro at the later stage, the optimal winding speed value is adopted to glue the hollow microstructure optical fiber, so that the reliability of the optical fiber gyro can be improved.
The specific test method takes winding speeds of 5 revolutions per minute, 10 revolutions per minute and 15 revolutions per minute as examples, and 10 optical fiber loops are taken as examples for different winding speeds to carry out the test: under the condition that other parameters are unchanged, the prepared optical fiber ring is subjected to full-temperature zero offset and scale factor test, and the adopted winding speed is in a set range, namely a reasonable range, so that the full-temperature zero offset and scale test of the prepared optical fiber ring is qualified. The specific full-temperature zero offset and scale test method belongs to the prior art and is not repeated. However, the fiber loops manufactured at different winding speeds have different ageing resistance, so that the number of qualified samples is different after the fiber loops are subjected to ageing resistance test, and the reliability value of the sizing process at each winding speed can be calculated by using the formula (5) 
And can get +.>
The maximum value corresponds to the optimal winding tension value, and the specific test results are shown in table 4:
TABLE 4 Table 4
Here, the
Then 0.9 corresponds to an optimal winding speed value of 10 revolutions per minute.
Further, evaluation value of curing process reliability in S2
The method is characterized by comprising the following steps: under the condition that the process parameters of other procedures are unchanged and the curing time is changed within a set range in the curing procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings under each curing time, then the full-temperature zero deviation and the scale factors of the optical fiber rings under different curing times are tested, and the number of qualified optical fiber ring samples after the preparation is recorded>
Then placing the qualified optical fiber ring after preparation under different curing time in different test boxes for accelerated aging test, and taking out the optical fiber ring after the preparation reaches a set time period for full-temperature zero offset and scale factor test respectively to obtain the number of unqualified optical fiber ring samples +.>
Then, according to the formula (6), the reliability of the sizing process of the hollow microstructure optical fiber at different winding speeds is calculated>
And selecting all curing times +.>
Is used as an evaluation value for the reliability of the curing process +. >
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The curing time at the maximum value is the optimal curing time for curing the hollow microstructure optical fiber loop:
the test method is adoptedEvaluation value for determining reliability of curing process
The method can be used for evaluating the process reliability of the fiber optic gyroscope, and can obtain the optimal curing time value when the evaluation value of the curing process reliability of the fiber optic loop is maximum, so that the curing treatment is carried out on the hollow microstructure fiber optic loop by adopting the optimal curing time value in the manufacturing process of the core component-the fiber optic loop of the fiber optic gyroscope in the later period, and the reliability of the fiber optic gyroscope can be improved.
The specific test method takes curing time of 2h, 3h and 4h as examples, and 5 optical fiber rings as examples are adopted for different curing time to carry out the test: under the condition that other parameters are unchanged, the prepared optical fiber ring is subjected to full-temperature zero offset and scale factor test, and the full-temperature zero offset and scale test of the prepared optical fiber ring is qualified because the adopted curing time is in a set range, namely a reasonable range. The specific full-temperature zero offset and scale test method belongs to the prior art and is not repeated. However, the fiber loops manufactured by adopting different curing times have different ageing resistance, so that the qualified samples after ageing resistance test are different, and the reliability value of the sizing process under each curing time can be calculated by using the formula (6) 
And can get +.>
The maximum value corresponds to the optimal curing time value, and the specific test results are shown in table 5:
TABLE 5
Here, the
And then 1, and the corresponding optimal cure time value is 4h.
Further, evaluation value of deboning process reliability in S2
The method is characterized by comprising the following steps: under the condition that technological parameters of other procedures are unchanged and the deboning tension is changed within a set range in the deboning procedure, the hollow microstructure optical fiber is respectively manufactured into a plurality of optical fiber loops under each deboning tension, then the full-temperature zero offset and the scale factors of the plurality of optical fiber loops under different deboning tensions are tested, and the number of qualified optical fiber loop samples after the preparation is recorded>
Then placing the qualified optical fiber rings prepared under different bone removal tensions in different test boxes for accelerated aging tests, and taking out the optical fiber rings after the preparation under different bone removal tensions for full-temperature zero offset and scale factor tests respectively after the set time period is reached to obtain the number of unqualified optical fiber ring samples after the reliability aging tests under different bone removal tensions>
Then, according to the formula (7), the reliability of the hollow microstructure optical fiber sizing procedure under different bone-removing tensions is calculated>
And selecting all +.>
Maximum value of the deboning process reliability as evaluation value +. >
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The deboning tension at the maximum value is the optimal deboning tension for deboning the hollow microstructure fiber loop:
the test method is adopted to determine the evaluation value of the reliability of the curing process
The method not only can be used for evaluating the process reliability of the fiber optic gyroscope, but also can obtain the optimal deboning tension value when the reliability evaluation value of the fiber optic loop deboning process is maximum, so that the optimal deboning tension value is adopted to debon the hollow microstructure fiber optic loop in the manufacturing process of the core component-the fiber optic loop of the fiber optic gyroscope in the later period, and the reliability of the fiber optic gyroscope can be improved.
The specific test method takes the bone removal tension as an example, 0.2N, 0.4N and 0.6N are respectively adopted, and 10 optical fiber rings are adopted as the different bone removal tensions to carry out the test: under the condition that other parameters are unchanged, the prepared optical fiber ring is subjected to full-temperature zero offset and scale factor test, and the full-temperature zero offset and scale test of the prepared optical fiber ring is qualified because the adopted debonding tension is in a set range, namely a reasonable range. The specific full-temperature zero offset and scale test method belongs to the prior art and is not repeated. However, the optical fiber ring manufactured by adopting different deboning tensions has different ageing resistance, so that the qualified sample numbers after the aging test is carried out on the optical fiber ring are different, and the reliability value of the deboning process under each deboning tension can be calculated by using the formula (7) 
And can get +.>
The optimal deboning tension value corresponding to the maximum value is shown in table 6:
here, the
Then is 1, the corresponding optimal bone fracture is removedThe force value was 0.2N.
Further, in S2, the evaluation value of the reliability of the bonding process
The method is characterized by comprising the following steps: under the condition that technological parameters of other working procedures are unchanged and the thickness of adhesive is changed in a set range in the adhesive working procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings at each adhesive thickness, then the full-temperature zero offset and the scale factors of the optical fiber rings at different adhesive thicknesses are tested, and the number of qualified optical fiber ring samples after the preparation is recorded>
Then placing the qualified optical fiber rings prepared under different adhesive thicknesses in different test boxes for accelerated aging test, and taking out the optical fiber rings after the preparation reaches a set time period for full-temperature zero offset and scale factor test respectively to obtain the number of unqualified optical fiber ring samples after the reliability aging test under different adhesive thicknesses>
Then, the reliability of the hollow microstructure optical fiber bonding process under different bonding adhesive thicknesses is calculated according to the formula (8)>
And selecting the thickness of all adhesive>
As an evaluation value for the reliability of the bonding process 
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The adhesive thickness at the maximum value is the optimal adhesive thickness, and the hollow microstructure optical fiber ring is bonded:
the test method is adopted to determine the evaluation value of the reliability of the bonding process
The method can be used for evaluating the process reliability of the fiber optic gyroscope, and can obtain the optimal adhesive thickness value when the reliability evaluation value of the fiber optic loop bonding process is maximum, so that the optimal adhesive thickness value is adopted to bond the hollow microstructure fiber optic loop in the manufacturing process of the core component-the fiber optic loop of the fiber optic gyroscope in the later period, and the reliability of the fiber optic gyroscope can be improved.
The specific test method takes the thickness of the adhesive as an example, 1mm, 1.5mm and 2mm are adopted respectively, and the test is carried out by taking 10 optical fiber rings as examples for different adhesive thicknesses: under the condition that other parameters are unchanged, the prepared optical fiber ring is subjected to full-temperature zero offset and scale factor test, and the thickness of the adopted adhesive is in a set range, namely a reasonable range, so that the full-temperature zero offset and scale test of the prepared optical fiber ring is qualified. The specific full-temperature zero offset and scale test method belongs to the prior art and is not repeated. However, the optical fiber ring made of different adhesive thicknesses has different ageing resistance, so that the qualified samples after ageing resistance test are different, and the reliability value of the adhesive process under each adhesive thickness can be calculated by using the formula (8) 
And can get +.>
The optimal adhesive thickness value corresponding to the maximum value is shown in table 7:
TABLE 7
Here, the
Then 0.9 and the corresponding optimum bond thickness value is 1.5mm.
To be determined by experiment
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、/>
、/>
、/>
、/>
、
The evaluation value of the process reliability of the hollow microstructure fiber-optic gyroscope can be calculated by substituting the value of (1) into the formula>
The following are provided:
in the manufacturing process of the fiber-optic gyroscope, the optimal rewinding tension value is 1 gram force, the optimal upper fiber splitting tension value is 1.5 gram force, the optimal winding tension value is 2 gram force, the optimal winding speed value is 10 revolutions per minute, the optimal curing time value is 4 hours, the optimal debonding tension value is 0.2N, and the optimal bonding glue thickness value is 1.5mm to manufacture the fiber-optic ring, so that the process reliability of the fiber-optic gyroscope can be greatly improved.
The optimal time for the fiber optic ring to be placed in the test box for the accelerated aging test is 30 natural days, and the aging test can be carried out in multiple physical fields of heat, humidity and vibration, so that the service scene of the fiber optic gyroscope can be better simulated, and the aging resistance of the fiber optic ring can be truly and accurately represented.
In summary, the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope provided by the invention can accurately evaluate the reliability of the fiber-optic gyroscope, and can improve the process reliability of the fiber-optic gyroscope by utilizing the optimal parameters obtained in the evaluation process to manufacture the fiber-optic gyroscope.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for evaluating and improving the process reliability of a hollow microstructure fiber-optic gyroscope is characterized in that: the method comprises the following steps:
s1: establishing a process reliability evaluation equation of the hollow microstructure fiber-optic gyroscope as formula (1):
wherein:
evaluation value of process reliability of hollow microstructure fiber-optic gyroscope>
Is the evaluation value of the reliability of the rewinding process of the hollow microstructure optical fiber, and is +.>
Is the evaluation value of the reliability of the fiber-separating process on the hollow microstructure fiber, and is +.>
Evaluation value of low tension high symmetry degree winding process reliability for hollow microstructure optical fiber, < +.>
For evaluation of the reliability of the sizing process, < +.>
For evaluation of the reliability of the curing process, +.>
For the evaluation of the reliability of the deboning process, < >>
The evaluation value of the reliability of the bonding process is adopted;
s2: under the condition that the technological parameters of other working procedures are unchanged, the rewinding tension of the rewinding working procedure is changed to form a plurality of optical fiber rings, and the evaluation value of the reliability of the rewinding process of the hollow microstructure optical fiber under the optimal rewinding tension is obtained 
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, changing the upper fiber splitting tension of the upper fiber splitting working procedure to prepare a plurality of optical fiber rings, and obtaining the evaluation value of the upper fiber splitting process reliability of the hollow microstructure optical fiber under the optimal upper fiber splitting tension>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the winding tension of the low-tension high-symmetry winding working procedure is changed to manufacture a plurality of optical fiber rings, and the evaluation value of the reliability of the low-tension high-symmetry winding technology of the hollow microstructure optical fiber under the optimal winding tension is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the winding speed of the sizing working procedure is changed to form a plurality of optical fiber rings, and an evaluation value of the reliability of the sizing technology at the optimal winding speed is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the curing time of the curing working procedure is changed to form a plurality of optical fiber rings, and an evaluation value of the curing process reliability under the optimal curing time is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other procedures are unchanged, the bone-removing tension of the bone-removing procedure is changed to form a plurality of optical fiber rings, and an evaluation value of the bone-removing process reliability under the optimal bone-removing tension is obtained>
The method comprises the steps of carrying out a first treatment on the surface of the Under the condition that the technological parameters of other working procedures are unchanged, the thickness of the adhesive glue of the adhesive working procedure is changed to form a plurality of optical fiber rings, and the evaluation value of the reliability of the adhesive working procedure under the optimal adhesive glue thickness is obtained >
；
S3: calculated by S2
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、/>
、/>
、/>
、/>
、/>
Substituting the evaluation value into the (1) to calculate the evaluation value of the process reliability of the hollow microstructure fiber-optic gyroscope>
；
S4: in the manufacturing process of the later-stage hollow microstructure fiber-optic gyroscope, the optical fiber ring is manufactured by adopting the optimal rewinding tension, the optimal fiber-feeding fiber-dividing tension, the optimal winding speed, the optimal curing time, the optimal bone-removing tension and the optimal adhesive thickness in the S2, and then the fiber ring tail fiber and the Y waveguide tail fiber are connected to form the hollow microstructure fiber-optic gyroscope.
2. The method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope according to claim 1, wherein the method comprises the following steps: s2 evaluation value of reliability of hollow-core microstructure optical fiber rewinding process
The method is specifically determined according to the following steps: under the condition that the technological parameters of other procedures are unchanged and the rewinding tension is changed within a set range in the rewinding procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings under each rewinding tension, then the full-temperature zero deviation and the scale factors of the optical fiber rings under each rewinding tension are tested, and the number of qualified optical fiber ring samples after the preparation is recorded>
Then placing the qualified optical fiber rings prepared under different rewinding tensions in different test boxes for accelerated aging tests, and taking out the optical fiber rings after the set time is reached to perform all-temperature zero offset and scale factor tests respectively to obtain the number of unqualified optical fiber rings subjected to reliability aging tests under different rewinding tensions +. >
Then calculating the reliability of the hollow microstructure optical fiber rewinding process under different rewinding tensions according to the formula (2)>
And selecting all the tension of the rewinding>
Is used as the evaluation value of the reliability of the hollow microstructure optical fiber rewinding process>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The rewinding tension at the maximum value is the optimal rewinding tension, and the hollow microstructure optical fiber is rewound;
3. the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope according to claim 1, wherein the method comprises the following steps: s2 evaluation value of reliability of fiber-on-fiber splitting process of hollow-core microstructure optical fiber
The method is characterized by comprising the following steps: under the condition that the technological parameters of other working procedures are unchanged and the upper fiber splitting tension is changed within a set range in the upper fiber splitting working procedure, the hollow microstructure optical fiber is respectively manufactured into a plurality of optical fiber loops under each upper fiber splitting tension, then the full-temperature zero deviation and the scale factors of the plurality of optical fiber loops under different upper fiber splitting tensions are tested, and the number of qualified optical fiber loop samples after the preparation is recorded>
Then placing qualified optical fiber rings prepared under different upper fiber splitting tensions in different test boxes for accelerated aging test to reach the set time Taking out the fiber after the section and respectively carrying out full-temperature zero deviation and scale factor test to obtain the number of unqualified fiber ring samples +.>
Then, according to the formula (3), the reliability of the fiber-feeding and fiber-separating process of the hollow microstructure optical fiber under different fiber-feeding and fiber-separating tensions is calculated>
And selecting all the upper fibers under the tension of the upper fibers>
Is used as the evaluation value of the reliability of the fiber-separating process on the hollow microstructure fiber +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The upper fiber splitting tension at the maximum value is the optimal upper fiber splitting tension, and the upper fiber splitting is carried out on the hollow microstructure optical fiber;
4. the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope according to claim 1, wherein the method comprises the following steps: s2 evaluation value of reliability of low-tension high-symmetry winding process of hollow-core microstructure optical fiber
The method is characterized by comprising the following steps: under the condition that the process parameters of other procedures are unchanged and the winding tension is changed in the set range in the low-tension high-symmetry winding procedure, the hollow microstructure optical fiber is respectively manufactured into a plurality of optical fiber loops under each winding tensionThen testing the full-temperature zero offset and the scale factors of the optical fiber rings under different winding tensions, and recording the sample number of qualified optical fiber rings after the preparation >
Then placing the qualified optical fiber rings after preparation under different winding tensions in different test boxes for accelerated aging tests, and taking out the optical fiber rings after the preparation under different winding tensions for full-temperature zero offset and scale factor tests respectively after the set time period is reached to obtain the number of unqualified optical fiber ring samples after reliability aging tests under different winding tensions>
Then, according to the step (4), the reliability of the low-tension high-symmetry winding process of the hollow microstructure optical fiber under different winding tensions is calculated>
And selecting all the winding tension>
The maximum value of (2) is used as the evaluation value of the reliability of the low-tension high-symmetry winding process of the hollow microstructure optical fiber +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The winding tension at the maximum value is the optimal winding tension, and the hollow microstructure optical fiber is subjected to low-tension high-symmetry winding;
5. the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope according to claim 1, which is characterized in thatIn the following steps: evaluation value of reliability of sizing process in S2
The method is characterized by comprising the following steps: under the condition that the process parameters of other procedures are unchanged and the winding speed is changed within a set range in the sizing procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings at each winding speed, then the full-temperature zero offset and the scale factors of the plurality of optical fiber rings at different winding speeds are tested, and the number of qualified optical fiber ring samples after the preparation is recorded >
Then placing the qualified optical fiber rings prepared at different winding speeds in different test boxes for accelerated aging test, and taking out the optical fiber rings after the preparation is completed for a set period of time to respectively perform full-temperature zero offset and scale factor test to obtain the number of unqualified optical fiber ring samples after the reliability aging test at different winding speeds>
Then, according to the formula (5), the reliability of the sizing process of the hollow microstructure optical fiber at different winding speeds is calculated>
And selecting all winding speeds +.>
Maximum value as evaluation value for the reliability of the sizing process +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
Sizing the hollow microstructure optical fiber with the winding speed at the maximum value being the optimal winding speed;
6. the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope according to claim 1, wherein the method comprises the following steps: s2, evaluating the reliability of the curing process
The method is characterized by comprising the following steps: under the condition that the process parameters of other procedures are unchanged and the curing time is changed within a set range in the curing procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings under each curing time, then the full-temperature zero deviation and the scale factors of the optical fiber rings under different curing times are tested, and the number of qualified optical fiber ring samples after the preparation is recorded >
Then placing the qualified optical fiber ring after preparation under different curing time in different test boxes for accelerated aging test, and taking out the optical fiber ring after the preparation reaches a set time period for full-temperature zero offset and scale factor test respectively to obtain the number of unqualified optical fiber ring samples +.>
Then, according to the formula (6), the reliability of the sizing process of the hollow microstructure optical fiber at different winding speeds is calculated>
And selecting all curing times +.>
Is used as an evaluation value for the reliability of the curing process +.>
Then in the manufacturing process of the later hollow microstructure fiber optic gyroscopeTo->
The curing time at the maximum value is the optimal curing time, and the hollow microstructure optical fiber loop is cured;
7. the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope according to claim 1, wherein the method comprises the following steps: s2, evaluating the reliability of the deboning process
The method is characterized by comprising the following steps: under the condition that technological parameters of other procedures are unchanged and the deboning tension is changed within a set range in the deboning procedure, the hollow microstructure optical fiber is respectively manufactured into a plurality of optical fiber loops under each deboning tension, then the full-temperature zero offset and the scale factors of the plurality of optical fiber loops under different deboning tensions are tested, and the number of qualified optical fiber loop samples after the preparation is recorded >
Then placing the qualified optical fiber rings prepared under different bone removal tensions in different test boxes for accelerated aging tests, and taking out the optical fiber rings after the preparation under different bone removal tensions for full-temperature zero offset and scale factor tests respectively after the set time period is reached to obtain the number of unqualified optical fiber ring samples after the reliability aging tests under different bone removal tensions>
Then, according to the formula (7), the reliability of the hollow microstructure optical fiber sizing procedure under different bone-removing tensions is calculated>
And selecting all +.>
Maximum value of the deboning process reliability as evaluation value +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The deboning tension at the maximum value is the optimal deboning tension, and deboning is carried out on the hollow microstructure optical fiber loop;
8. the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope according to claim 1, wherein the method comprises the following steps: s2, evaluating the reliability of the bonding process
The method is characterized by comprising the following steps: under the condition that technological parameters of other working procedures are unchanged and the thickness of adhesive is changed in a set range in the adhesive working procedure, the hollow micro-structure optical fiber is respectively manufactured into a plurality of optical fiber rings at each adhesive thickness, then the full-temperature zero offset and the scale factors of the optical fiber rings at different adhesive thicknesses are tested, and the number of qualified optical fiber ring samples after the preparation is recorded >
Then placing the qualified optical fiber rings prepared under different adhesive thicknesses in different test boxes for accelerated aging test, and taking out the optical fiber rings after the preparation reaches a set time period for full-temperature zero offset and scale factor test respectively to obtain the number of unqualified optical fiber ring samples after the reliability aging test under different adhesive thicknesses>
Then, the reliability of the hollow microstructure optical fiber bonding process under different bonding adhesive thicknesses is calculated according to the formula (8)>
And selecting the thickness of all adhesive>
Is used as an evaluation value for the reliability of the bonding process +.>
Then in the process of manufacturing the later hollow microstructure fiber optic gyroscope, the following steps are adopted>
The adhesive thickness at the maximum value is the optimal adhesive thickness, and the hollow microstructure optical fiber ring is bonded;
9. the method for evaluating and improving the process reliability of the hollow microstructure fiber-optic gyroscope according to any one of claims 2 to 8, wherein the method comprises the following steps: the fiber optic loop was placed in the test chamber for 30 natural days for accelerated aging testing.
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| CN103674070A (en) * | 2013-12-26 | 2014-03-26 | 北京航天时代光电科技有限公司 | Optical-fiber gyroscope optical path processing error testing correction system and method |
| CN111678535A (en) * | 2020-04-27 | 2020-09-18 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Accelerated test method for reliability of fiber-optic gyroscope |
| WO2022062792A1 (en) * | 2020-09-24 | 2022-03-31 | 江苏永鼎光纤科技有限公司 | Plc-based optical fiber screening machine control module designing method |
| CN113405564A (en) * | 2021-05-25 | 2021-09-17 | 广东工业大学 | Method for testing symmetry and internal defects of fiber-optic gyroscope sensitive ring |
| WO2023001207A1 (en) * | 2021-07-20 | 2023-01-26 | 广东工业大学 | Optical fiber distributed polarization crosstalk rapid measurement apparatus based on optical frequency domain interference |
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