CN103673862B - Three float-type gyroscope magnetic levitation centered assembling pick-up units - Google Patents
Three float-type gyroscope magnetic levitation centered assembling pick-up units Download PDFInfo
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- CN103673862B CN103673862B CN201310629670.5A CN201310629670A CN103673862B CN 103673862 B CN103673862 B CN 103673862B CN 201310629670 A CN201310629670 A CN 201310629670A CN 103673862 B CN103673862 B CN 103673862B
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Abstract
The present invention relates to three float-type gyroscope magnetic levitation centered assembling pick-up units, belong to three float-type gyroscope mounting technology fields.The present invention effectively can monitor assembling process, control centering parameter; Axial location base of the present invention and dry centering support for testing adopt symmetrical structure design, and the LY12 of material selection low-gravity, easily processing, track geometry precision controlling, within 0.002mm, can effectively reduce Product Assembly error.In device use procedure, adopt minim gap and screws tighten, eliminate location and measuring error.The present invention monitors float assembly positional information in gyroscope by axial and radial two-way simultaneously, realizes magnetic suspension bearing spatial positional information in instrument chamber visual, to produced problem Timeliness coverage in process assembling, adjusts in time.
Description
Technical field
The present invention relates to three float-type gyroscope magnetic levitation centered assembling pick-up units, belong to three float-type gyroscope mounting technology fields.
Background technology
The novel gyroscope that three float-type gyroscopes are that liquid collecting is floated, dynamic pressure air float, magnetic levitation are integrated, it is primarily of compositions such as float assembly, torquer holder assembly, sensor holder assembly, left and right end cap, magnetic suspension bearings.Wherein magnetic levitation element geometric center, power center and signal center's misalignment are the important factor causing accuracy of instrument error, and be also the main cause that magnetic levitation disturbance torque produces, therefore magnetic suspension bearing requires very high centered assembling precision simultaneously.
Current magnetic suspension bearing assembling process relies on merely machine and adds size, and artificially judge float centered assembling position, testing apparatus cannot be accomplished special, operation and testing process cumbersome, cannot macroscopic examination judge, easily cause maloperation hidden danger, confined state and instrument mode contrast difference larger.
Magnetic suspension bearing carries out spacing basis controlling float assembly along the symmetric position on output shaft direction at pivot and jewel bearing, during instrumentation, float assembly working position is measured by two end axles, radial magnetic bearing, and provide location restoring force by force feedback loop, to ensure the best operational position of float assembly.
In view of when float assembly works and assembling time supporting and location difference, how effectively to control float assembly centering position in assembling process, ensureing that magnetic levitation test center and the spacing center superposition of jewel bearing are the keys improving Meter Reliability and precision, is also the key technical problems of instrument magnetic levitation assembling centering.
The centering of three float-type gyroscope output shaft systems requires the precision and stability being directly connected to instrument.Must not contact between pivot with jewel eye during instrumentation.Once the Contact of pivot and jewel bearing, the friction disturbance torque of pivot and jewel bearing will be increased on output shaft, have influence on the precision and stability of instrument constant value item, instrument cisco unity malfunction time serious.The method that this practicality provides is for three float-type gyroscope assembly structure features, solve because of the float assembly pivot that centered assembling low precision brings in gyroscope and jewel bearing interfere and magnetic levitation reinforcing asymmetric, affect the problem of instrumentation stability.
Summary of the invention
The object of the invention is in order to overcome existing three float-type gyroscope assembling processes export axis centered assemblings cannot the problem of visual inspection, three float-type gyroscope magnetic levitation centered assembling pick-up units are proposed.
The object of the invention is to be achieved through the following technical solutions.
Three float-type gyroscope magnetic levitation centered assembling pick-up units of the present invention, this device comprises axial location base, radial alignment support for testing, clamp-screw and electric inductance measuring-testing instrument;
When radial alignment test is carried out to three float-type gyroscopes, three float-type gyroscopes are fixed on radial alignment support for testing by clamp-screw, by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance (L1) in magnetic suspension bearing between stators and rotators and below inductance (L2) in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap; When inductance value is in setting range, illustrates that three float-type gyroscope centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes;
Then three float-type gyroscopes are rotated to 90 ° together with radial alignment support for testing, again by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance (L3) in magnetic suspension bearing between stators and rotators and below inductance (L4) in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap; When inductance value is in setting range, illustrates that three float-type gyroscope centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes;
Then three float-type gyroscopes are rotated to 180 ° together with radial alignment support for testing, again by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance (L5) in magnetic suspension bearing between stators and rotators and below inductance (L6) in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap; When inductance value is in setting range, illustrates that three float-type gyroscope centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes;
Then three float-type gyroscopes are rotated 270 ° together with radial alignment support for testing, again by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance (L7) in magnetic suspension bearing between stators and rotators and below inductance (L8) in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap; When inductance value is in setting range, illustrates that three float-type gyroscope centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes.
When axial alignment test is carried out to three float-type gyroscopes, three float-type gyroscopes are fixed on radial alignment support for testing by clamp-screw, again three float-type gyroscopes are fixed on axial location base together with radial alignment support for testing, by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance (L9) in magnetic suspension bearing between stators and rotators and below inductance (L10) in magnetic suspension bearing between stators and rotators, gap value is converted to by the relational expression (2) between inductance and gap, when inductance value is in setting range, illustrate that three float-type gyroscope centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes.
When radial alignment test is carried out to three float-type gyroscopes, ignore leakage field, suppose to be distributed by the field homogeneity in each cross section, according to the known inductance L of Ampere circuit law
radialand gap delta
radialbetween relational expression be:
N is the coil turn of magnetic suspension bearing, and S is that core section amasss, and μ is air magnetoconductivity.
When axial alignment test is carried out to three float-type gyroscopes, ignore leakage field, suppose to be distributed by the field homogeneity in each cross section, according to the known inductance L of Ampere circuit law
axiallyand gap delta
axiallybetween relational expression be:
N is the coil turn of magnetic suspension bearing, and S is that core section amasss, and μ is air magnetoconductivity.
Axial location base and radial alignment support for testing all adopt LY12 material.
Beneficial effect
The present invention effectively can monitor assembling process, control centering parameter;
Axial location base of the present invention and dry centering support for testing adopt symmetrical structure design, and the LY12 of material selection low-gravity, easily processing, track geometry precision controlling, within 0.002mm, can effectively reduce Product Assembly error.In device use procedure, adopt minim gap and screws tighten, eliminate location and measuring error.
The present invention monitors float assembly positional information in gyroscope by axial and radial two-way simultaneously, realizes magnetic suspension bearing spatial positional information in instrument chamber visual, to produced problem Timeliness coverage in process assembling, adjusts in time.
Accompanying drawing explanation
Fig. 1 is the device schematic diagram that three float-type gyroscopes 4 carry out when radial alignment is tested;
Fig. 2 is the device schematic diagram that three float-type gyroscopes 4 carry out when axial alignment is tested.
Embodiment
Three float-type gyroscope magnetic levitation centered assembling pick-up units, this device comprises axial location base 1, radial alignment support for testing 2, clamp-screw 3 and electric inductance measuring-testing instrument;
When radial alignment test is carried out to three float-type gyroscopes 4, three float-type gyroscopes 4 are fixed on radial alignment support for testing 2 by clamp-screw 3, by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance (L1) in magnetic suspension bearing between stators and rotators and below inductance (L2) in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap; When inductance value is in setting range, illustrates that three float-type gyroscope 4 centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes 4;
Then three float-type gyroscopes 4 are rotated to 90 ° together with radial alignment support for testing 2, again by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance (L3) in magnetic suspension bearing between stators and rotators and below inductance (L4) in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap; When inductance value is in setting range, illustrates that three float-type gyroscope 4 centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes 4;
Then three float-type gyroscopes 4 are rotated to 180 ° together with radial alignment support for testing 2, again by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance (L5) in magnetic suspension bearing between stators and rotators and below inductance (L6) in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap; When inductance value is in setting range, illustrates that three float-type gyroscope 4 centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes 4;
Then three float-type gyroscopes 4 are rotated 270 ° together with radial alignment support for testing 2, again by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance (L7) in magnetic suspension bearing between stators and rotators and below inductance (L8) in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap; When inductance value is in setting range, illustrates that three float-type gyroscope 4 centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes 4.
When axial alignment test is carried out to three float-type gyroscopes 4, three float-type gyroscopes 4 are fixed on radial alignment support for testing 2 by clamp-screw 3, again three float-type gyroscopes 4 are fixed on axial location base 1 together with radial alignment support for testing 2, by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance (L9) in magnetic suspension bearing between stators and rotators and below inductance (L10) in magnetic suspension bearing between stators and rotators, gap value is converted to by the relational expression (2) between inductance and gap, when inductance value is in setting range, illustrate that three float-type gyroscope 4 centered assemblings meet the requirements, if two inductance value exceed setting range, then work is ressembled to three float-type gyroscopes 4.
When radial alignment test is carried out to three float-type gyroscopes 4, ignore leakage field, suppose to be distributed by the field homogeneity in each cross section, according to the known inductance L of Ampere circuit law
radialand gap delta
radialbetween relational expression be:
N is the coil turn (150) of magnetic suspension bearing, and S is the long-pending (11.627mm of core section
2), μ is air magnetoconductivity (4 π X10
-7h/m).
When axial alignment test is carried out to three float-type gyroscopes 4, ignore leakage field, suppose to be distributed by the field homogeneity in each cross section, according to the known inductance L of Ampere circuit law
axiallyand gap delta
axiallybetween relational expression be:
N is the coil turn (300) of magnetic suspension bearing, and S is the long-pending (36.172mm of core section
2), μ is air magnetoconductivity (4 π X10
-7h/m).
Axial location base 1 and radial alignment support for testing 2 all adopt LY12 material.
Below in conjunction with accompanying drawing and example, the present invention will be further described.
Example 1
Three float-type gyroscopes are requiring that in centered assembling process axial magnetic signal center side-play amount is not more than 2mH (being L2-L6≤2mH, L1-L5≤2mH, L4-L8≤2mH, L3-L7≤2mH), and it is 9 ± 1mH that axial magnetic suspension signal side-play amount requires
Three float-type gyroscope magnetic levitation centered assembling pick-up units, this device comprises axial location base 1, radial alignment support for testing 2, clamp-screw 3 and electric inductance measuring-testing instrument, axial location base 1 has the circular slab of cavity for Intermediate Gray, and radial alignment support for testing 2 is the octahedron with cavity;
As shown in Figure 1, when radial alignment test is carried out to three float-type gyroscopes 4, three float-type gyroscopes 4 are fixed in the cavity of radial alignment support for testing 2 by clamp-screw 3, by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance L 1=8.92mH in magnetic suspension bearing between stators and rotators, below inductance L 2=12.65mH in magnetic suspension bearing between stators and rotators;
Then by three float-type gyroscopes 4 together with radial alignment support for testing 2 half-twist, then by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance L 3=8.36mH in magnetic suspension bearing between stators and rotators and below inductance L 4=13.15mH in magnetic suspension bearing between stators and rotators;
Then three float-type gyroscopes 4 are rotated 180 ° together with radial alignment support for testing 2, then by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance L 5=9.25mH in magnetic suspension bearing between stators and rotators and below inductance L 6=12.75mH in magnetic suspension bearing between stators and rotators;
Then three float-type gyroscopes 4 are rotated 270 ° together with radial alignment support for testing 2, then by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance L 7=8.97mH in magnetic suspension bearing between stators and rotators and below inductance L 8=13.45mH in magnetic suspension bearing between stators and rotators;
From above test result known L2-L6=0.01mH, L1-L5=0.33mH, L4-L8=0.3mH, L3-L7=0.51mH, all meet technical requirement and be not more than 2mH.
Example 2
As shown in Figure 2, when axial alignment test is carried out to three float-type gyroscopes 4, three float-type gyroscopes 4 are fixed in the cavity of radial alignment support for testing 2 by clamp-screw 3, again three float-type gyroscopes 4 are fixed in the cavity of axial location base 1 together with radial alignment support for testing 2, by electric inductance measuring-testing instrument test three float-type gyroscopes 4 under this location status above inductance in magnetic suspension bearing between stators and rotators be L9=41.3mH, below inductance L 10=49.5mH in magnetic suspension bearing between stators and rotators.
From the known L10-L9=8.2mH of test result, meet the requirement of technical requirement 9 ± 1mH.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (2)
1. three float-type gyroscope magnetic levitation centered assembling pick-up units, is characterized in that: this device comprises axial location base, radial alignment support for testing, clamp-screw and electric inductance measuring-testing instrument;
When radial alignment test is carried out to three float-type gyroscopes, three float-type gyroscopes are fixed on radial alignment support for testing by clamp-screw, by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance L 1 in magnetic suspension bearing between stators and rotators and below inductance L 2 in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap;
Then by three float-type gyroscopes together with radial alignment support for testing half-twist, again by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance L 3 in magnetic suspension bearing between stators and rotators and below inductance L 4 in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap;
Then three float-type gyroscopes are rotated 180 ° together with radial alignment support for testing, again by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance L 5 in magnetic suspension bearing between stators and rotators and below inductance L 6 in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap;
Then three float-type gyroscopes are rotated 270 ° together with radial alignment support for testing, again by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance L 7 in magnetic suspension bearing between stators and rotators and below inductance L 8 in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (1) between inductance and gap;
When axial alignment test is carried out to three float-type gyroscopes, three float-type gyroscopes are fixed on radial alignment support for testing by clamp-screw, again three float-type gyroscopes are fixed on axial location base together with radial alignment support for testing, by electric inductance measuring-testing instrument test three float-type gyroscopes under this location status above inductance L 9 in magnetic suspension bearing between stators and rotators and below inductance L 10 in magnetic suspension bearing between stators and rotators, convert gap value to by the relational expression (2) between inductance and gap;
If the difference of L5 and L1, L6 and L2, L7 and L3, L8 and L4, L10 and L9 exceedes setting range, then work is ressembled to three float-type gyroscopes;
When radial alignment test is carried out to three float-type gyroscopes, inductance L
radialand gap delta
radialbetween relational expression be:
N is the coil turn of magnetic suspension bearing, and S is that core section amasss, and μ is air magnetoconductivity;
When axial alignment test is carried out to three float-type gyroscopes, inductance L
axiallyand gap delta
axiallybetween relational expression be:
N is the coil turn of magnetic suspension bearing, and S is that core section amasss, and μ is air magnetoconductivity.
2. three float-type gyroscope magnetic levitation centered assembling pick-up units according to claim 1, is characterized in that: axial location base and radial alignment support for testing all adopt LY12 material.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103913597B (en) * | 2014-03-27 | 2016-06-29 | 北京航天控制仪器研究所 | A kind of gyroaccelerometer float centering monitoring system |
| CN107907747B (en) * | 2017-12-19 | 2024-06-07 | 陕西航天时代导航设备有限公司 | Magnetic suspension element inductance output characteristic test tool and test method |
| CN113447009B (en) * | 2021-05-24 | 2023-01-10 | 西安航天时代精密机电有限公司 | Liquid floating gyroscope trial assembly device based on full rubber ring sealing structure |
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| CN102435131A (en) * | 2011-11-11 | 2012-05-02 | 北京中科科仪技术发展有限责任公司 | Radial displacement sensor and rotor radial displacement detection system of magnetically levitated molecular pump |
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2013
- 2013-11-29 CN CN201310629670.5A patent/CN103673862B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4643034A (en) * | 1984-04-11 | 1987-02-17 | David Favatella | Gyroscopically stabilized magnetic suspension system |
| CN101233669A (en) * | 2005-12-09 | 2008-07-30 | 爱信艾达株式会社 | Method and device for measuring position of stator |
| CN1928489A (en) * | 2006-09-26 | 2007-03-14 | 武汉理工大学 | Integrated magnetic suspension rotor dynamic displacement measuring device |
| CN102288171A (en) * | 2011-04-28 | 2011-12-21 | 中国船舶重工集团公司第七○七研究所 | Active magnetically-suspended gyroscope floater centering and adjusting device |
| CN102425555A (en) * | 2011-11-11 | 2012-04-25 | 北京中科科仪技术发展有限责任公司 | Method for obtaining radial suspension centers of rotor of magnetic molecular pump |
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