CN116164720A - Spherical gap adjusting device and method based on hemispherical resonant gyro sensitive component - Google Patents
Spherical gap adjusting device and method based on hemispherical resonant gyro sensitive component Download PDFInfo
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- CN116164720A CN116164720A CN202211724889.9A CN202211724889A CN116164720A CN 116164720 A CN116164720 A CN 116164720A CN 202211724889 A CN202211724889 A CN 202211724889A CN 116164720 A CN116164720 A CN 116164720A
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- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/56—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
- G01C19/567—Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using the phase shift of a vibration node or antinode
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Abstract
The invention relates to a hemispherical resonator gyro, in particular to a spherical gap adjusting device and a spherical gap adjusting method based on a hemispherical resonator gyro sensitive component, which aim to solve the technical problems that the existing device not only needs more auxiliary instruments when adjusting the spherical gap of the hemispherical resonator gyro, but also can not realize axial adjustment at the same time when adjusting the spherical gap of the hemispherical resonator gyro; when the gap part is adjusted, the capacitance signal of the gap part can be detected in real time through an external capacitance measuring instrument, so that the gap size and uniformity of the gap part can rapidly meet the assembly requirement.
Description
Technical Field
The invention relates to a hemispherical resonator gyro, in particular to a spherical gap adjusting device and method based on a hemispherical resonator gyro sensitive component.
Background
Hemispherical resonator gyroscopes are used as a new type of solid gyroscope to sense base rotation through the radial standing wave precession effect. In the prior art, if the size and uniformity of a spherical gap of a hemispherical resonator gyro sensitive component during assembly do not meet the assembly requirement, a gyro output detection signal is subjected to phase error and amplitude error, so that the overall performance of the hemispherical resonator gyro is affected.
The invention patent in China with publication number of CN103644901A discloses an assembly fixture and an assembly detection system for a hemispherical resonator gyro sensitive gauge head, and the technical scheme disclosed by the assembly fixture comprises a base, a hollow cylinder, a locating pin screw, four support rods and four depth micrometers, wherein the uniformity of a spherical gap is adjusted through a fine adjustment system of the depth micrometers and the locating pin screw. However, when the spherical gap is adjusted, the technical scheme not only needs more instruments to assist, but also can only adjust radially, and cannot realize axial adjustment and detection at the same time.
Disclosure of Invention
The invention aims to solve the technical problems that more auxiliary instruments are needed and axial adjustment cannot be realized at the same time of radial adjustment when the spherical gap of a hemispherical resonator gyro is adjusted in the prior art, and provides a spherical gap adjusting device and a spherical gap adjusting method based on a hemispherical resonator gyro sensitive component.
In order to solve the technical problems, the technical solution provided by the invention is as follows:
the utility model provides a sphere clearance adjusting device based on sensitive subassembly of hemisphere resonance top, the sensitive subassembly of hemisphere resonance top is including detecting base, harmonic oscillator and excitation cover, the harmonic oscillator is the psi, including hemisphere casing and the center pole of wearing to locate its centre of sphere, be provided with a plurality of excitation electrodes on the excitation cover, be provided with a plurality of detection electrodes on the detection base, wherein, excitation cover internal surface and harmonic oscillator ectosphere form first sphere clearance, harmonic oscillator internal sphere and detection base surface form second sphere clearance, its special character lies in: comprises a first adjusting frame and a second adjusting frame;
the first adjusting frame comprises a first fixed table and a first fixed cylinder, a plurality of first test terminals are arranged on the side face of the first fixed table, one ends of the first test terminals are used for being connected with a plurality of excitation electrodes on the excitation cover in a one-to-one correspondence manner, and the other ends of the first test terminals extend out of the first fixed table to be arranged in a suspended manner, so that a first test end is formed; the first fixing table is of a hollow structure, a fixing seat is radially arranged on the inner side of the first fixing table, and a first mounting hole is formed in the middle of the fixing seat; the bottom end of the first fixed table is provided with a first adjusting piece corresponding to the first mounting hole to form a first axial adjusting end; the top end of the first fixed table is provided with a supporting seat, and the middle part of the supporting seat is provided with a second test terminal to form a second test end;
the first fixing cylinder is sleeved at the middle part of the first fixing table and connected to the fixing seat, and a plurality of first fasteners and a plurality of second adjusting parts are arranged on the side face of the first fixing cylinder; one end of each first fastener passes through the first fixed cylinder and is used for being abutted with the excitation cover, the other end of each second fastener forms a first fastening end, one end of each second adjusting piece passes through the first fixed cylinder and is used for being abutted with the harmonic oscillator, and the other end of each second adjusting piece forms a first radial adjusting end;
the second adjusting frame comprises a second fixed table with a second through hole in the middle, and a second fixed cylinder communicated with the second through hole, wherein the second fixed cylinder is used for setting the excitation cover; the bottom end of the second fixing table is provided with a third adjusting piece which is arranged in the second through hole to form a second axial adjusting end; the side surface of the second fixing cylinder is provided with a plurality of second fastening pieces, one end of each second fastening piece penetrates through the second fixing cylinder and is used for being abutted with the excitation cover, and the other end of each second fastening piece forms a second fastening end;
the second fixed bench is provided with a plurality of backup pads along the periphery of the second fixed section of thick bamboo, all is provided with fourth regulating part in every backup pad, and the one end of every fourth regulating part all be used for with detect the base butt, the other end all forms the radial regulation end of second.
Further, the supporting seat comprises two supporting rods, one ends of the two supporting rods are respectively connected with the first fixing table, the other ends of the two supporting rods are connected to a fixing plate, and the second test terminal is arranged in the middle of the fixing plate;
the first fixed bench is in a first-step shape, a plurality of first test terminals are circumferentially arranged on the side face of the step with smaller diameter, two support rods are symmetrically arranged on the top end of the step with smaller diameter, and the fixed seat is radially arranged on the inner side of the step with larger diameter.
Further, one end of each first test terminal close to the excitation cover and one end of each second test terminal close to the harmonic oscillator are sleeved with conductive springs.
Further, the first fastener, the second fastener, the first adjusting piece, the second adjusting piece, the third adjusting piece and the fourth adjusting piece all adopt fine tooth screws.
Further, each supporting plate is connected with the second fixing table through a mounting screw.
Further, the first mounting hole comprises a first through hole arranged in the middle of the fixing seat and a columnar bulge communicated with the first through hole.
Meanwhile, based on the adjusting device, the invention provides a spherical gap adjusting method based on a hemispherical resonator gyro sensitive component, which is used for realizing adjustment of a first spherical gap and a second spherical gap, and is characterized in that: the method comprises the following steps:
the excitation cover is fixed through a plurality of first fasteners, and the first adjusting piece and the second adjusting pieces are abutted with the harmonic oscillator;
the first test terminals are conducted with the excitation electrodes on the excitation cover in a one-to-one correspondence manner, and the second test terminals are conducted with one end of the center rod, which is positioned on the outer spherical surface of the harmonic oscillator, in a contact manner;
step 4, judging whether the gap size and the gap capacitance uniform distribution value of the obtained first spherical gap meet the assembly requirement;
if yes, executing the step 5;
if not, the first spherical gap is axially adjusted through the first adjusting piece, the first spherical gap is radially adjusted through the plurality of second adjusting pieces, and the step 2 is returned after the adjustment is completed;
fixing the excitation cover through a plurality of second fasteners, enabling the third adjusting piece to be abutted with the excitation cover, and enabling a plurality of fourth adjusting pieces to be abutted with the detection base;
introducing a third test terminal and a plurality of fourth test terminals, conducting one end of the third test terminal in contact with one end of the center rod, which is positioned on the inner spherical surface of the harmonic oscillator, and connecting the other end of the third test terminal with an external capacitance measuring instrument, conducting one end of the fourth test terminal with a plurality of detection electrodes on the detection base in a one-to-one correspondence manner, and connecting the other end of the fourth test terminal with the external capacitance measuring instrument;
if yes, go to step 10;
if not, axially adjusting the second spherical gap through a third adjusting piece and a plurality of second fastening pieces, radially adjusting the second spherical gap through a plurality of fourth adjusting pieces, and returning to the step 7 after the adjustment is completed;
so far, the sensitive subassembly of hemisphere resonance top is accomplished the assembly, and its inside first sphere clearance and second sphere clearance all accord with the assembly requirement.
In step 6, a conductive spring is sleeved at one end of the third test terminal close to the harmonic oscillator and one end of each fourth test terminal close to the detection base.
Further, in the step 1 and the step 6, before the harmonic oscillator and the excitation cover are installed in the first adjusting frame, and before the detection base is installed in the second adjusting frame, the harmonic oscillator, the excitation cover and the detection base are all cleaned and indium lined.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the spherical gap adjusting device based on the hemispherical resonator gyro sensitive assembly, the axial adjustment and the radial adjustment of the first spherical gap are respectively realized through the first adjusting piece and the second adjusting piece on the first adjusting frame, the axial adjustment and the radial adjustment of the second spherical gap are respectively realized through the third adjusting piece and the fourth adjusting piece on the second adjusting frame, and when the first spherical gap or the second spherical gap is adjusted, the capacitance signal of the gap part can be detected in real time through the external capacitance measuring instrument, and the capacitance signal change of the gap part in the adjusting process can be intuitively displayed, so that the gap size and the uniformity of the first spherical gap and the second spherical gap can rapidly meet the assembly requirement.
2. According to the spherical gap adjusting device based on the hemispherical resonator gyro sensitive component, the conductive springs are arranged at one end of each first test terminal close to the excitation cover, one end of each second test terminal close to the harmonic oscillator, one end of each third test terminal close to the harmonic oscillator and one end of each fourth test terminal close to the detection base, so that capacitance signals on the harmonic oscillator, the excitation cover and the detection base are detected through the conductive springs in capacitance test, and electrode coating damage easily caused by an external capacitance measuring instrument in detection is avoided.
3. According to the spherical gap adjusting method based on the hemispherical resonator gyro sensitive component, the first spherical gap is adjusted through the first adjusting frame in the device, the harmonic oscillator and the excitation cover are fixed after adjustment is completed, the second spherical gap is adjusted through the second adjusting frame in the device, and the harmonic oscillator and the excitation cover are respectively and fixedly connected with the detection base after adjustment is completed, so that the hemispherical resonator gyro sensitive component can be quickly assembled, and the first spherical gap and the second spherical gap in the hemispherical resonator gyro sensitive component can meet assembly requirements.
Drawings
FIG. 1 is a schematic structural diagram of a hemispherical resonator gyro sensing assembly in an embodiment of a spherical gap adjustment device based on the hemispherical resonator gyro sensing assembly provided by the invention;
fig. 2 is a schematic structural diagram of a first adjusting frame in an embodiment of a spherical gap adjusting device based on a hemispherical resonator gyro sensing assembly provided by the invention;
FIG. 3 is a schematic cross-sectional view of FIG. 2 along a central axis of the first fixture cylinder according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the installation of the harmonic oscillator, the excitation shield and the first tuning frame in FIG. 2 according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second adjusting frame in an embodiment of a spherical gap adjusting device based on a hemispherical resonator gyro sensing assembly provided by the invention;
FIG. 6 is a schematic cross-sectional view of the second fixture cylinder of FIG. 5 along a central axis of the second fixture cylinder according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating the installation of the excitation cover, the harmonic oscillator, the detection base and the second adjusting bracket in FIG. 5 according to an embodiment of the present invention;
FIG. 8 is a flowchart of adjusting a first spherical gap in an embodiment of a spherical gap adjustment method based on hemispherical resonator gyro sensing components provided by the present invention;
FIG. 9 is a flowchart of adjusting a second spherical gap in an embodiment of a spherical gap adjustment method based on hemispherical resonator gyro sensing components provided by the present invention;
reference numerals illustrate:
the device comprises a 1-harmonic oscillator, a 2-detection base, a 3-excitation cover, a 4-first fixing platform, a 41-first fixing cylinder, a 42-fixing seat, a 5-first test terminal, a 6-first fastener, a 7-supporting rod, an 8-fixing plate, a 9-second test terminal, a 10-second adjusting piece, a 11-conductive spring, a 12-first adjusting piece, a 13-second fixing platform, a 14-second fixing cylinder, a 15-second fastener, a 16-supporting plate, a 17-fourth adjusting piece, a 18-mounting screw and a 19-third adjusting piece.
Detailed Description
The invention will be further described with reference to the drawings and specific examples.
In the prior art, the hemispherical resonator gyro sensitive assembly comprises a detection base 2, a harmonic oscillator 1 and an excitation cover 3 which are sequentially arranged from inside to outside, wherein the harmonic oscillator 1 is of a psi shape and comprises a hemispherical shell and a center rod penetrating through the center of the hemispherical shell, the excitation cover 3 is integrally provided with a plating layer, a plurality of excitation electrodes which are divided by ion etching are arranged on the inner surface of the excitation cover 3, the plurality of excitation electrodes can be led to the outer edge of the excitation cover 3, so that the plurality of excitation electrodes can be measured from the outer edge of the excitation cover 3, the whole detection base 2 is provided with the plating layer, the outer surface of the excitation electrodes is provided with a plurality of detection electrodes which are divided by ion etching, and the plurality of detection electrodes can be led to small holes at the end face of the detection base 2, so that the plurality of detection electrodes can be measured from the small holes at the end face of the detection base 2. The inner surface of the excitation cover 3 and the outer spherical surface of the harmonic oscillator 1 form a first spherical gap, and the inner spherical surface of the harmonic oscillator 1 and the outer surface of the detection base 2 form a second spherical gap.
The invention provides a spherical gap adjusting device based on a hemispherical resonator gyro sensitive assembly, which comprises a first adjusting frame and a second adjusting frame, wherein the first adjusting frame is used for adjusting the inner surface of an excitation cover 3 and the outer spherical surface of a harmonic oscillator 1 to form a first spherical gap, and the second adjusting frame is used for adjusting the inner spherical surface of the harmonic oscillator 1 and the outer surface of a detection base 2 to form a second spherical gap.
The first adjusting frame in this embodiment includes a first fixing table 4 and a first fixing cylinder 41, where the first fixing table 4 is of a hollow structure and is in a first step shape, and a plurality of first test terminals 5 are circumferentially disposed on a side surface of a step with a smaller diameter, so as to realize the extraction of electrical signals at a plurality of excitation electrodes on the excitation cover 3. One end of each of the plurality of first test terminals 5 is used for being connected with a plurality of excitation electrodes on the excitation cover 3 in a one-to-one correspondence mode, so that contact conduction between the plurality of excitation electrodes and the first test terminals 5 is achieved, and the other end of each of the plurality of first test terminals is arranged in a suspended mode to form a first test end and used for being connected with an external capacitance measuring instrument. As described above, the plurality of excitation electrodes are led to the outer edge of the excitation cover 3, and the plurality of first test terminals 5 can be conducted in one-to-one correspondence with the plurality of excitation electrodes on the excitation cover 3 only by abutting against the corresponding positions on the outer edge of the excitation cover 3.
The first fixing table 4 in the embodiment is radially provided with a fixing seat 42 at the inner side of a step with a larger diameter, a first mounting hole is formed in the middle of the fixing seat 42, and the first mounting hole in the embodiment comprises a first through hole formed in the middle of the fixing seat 42 and a columnar bulge communicated with the first through hole, and is used for limiting one end of a center rod, which is positioned at the inner spherical surface of the harmonic oscillator 1; the bottom end of the first fixed table 4 is provided with a first adjusting piece 12 corresponding to the first mounting hole, one end of the first adjusting piece 12 is arranged in the first mounting hole, the other end of the first adjusting piece 12 is arranged in a suspending mode to form a first axial adjusting end, and the first adjusting piece 12 is used for providing axial support for the harmonic oscillator 1 on one hand and for realizing axial adjustment of a first spherical gap on the other hand. The first adjustment member 12 in this embodiment is a fine tooth screw.
In this embodiment, the support seat is arranged at the top end of the step with the smaller diameter of the first fixing table 4, the support seat in this embodiment includes two support rods 7 symmetrically arranged at the top end of the step with the smaller diameter of the first fixing table 4, the top end surfaces of the two support rods 7 are both connected with the fixing plate 8, and the two ends of the support rod 7 adopted in this embodiment are respectively provided with threads with opposite spiral directions, so that the support rod 7 can be connected with the fixing plate 8 and the first fixing table 4 simultaneously. The middle part of the fixed plate 8 is provided with a second test terminal 9 for leading out an electric signal of which the center rod is positioned at one end of the outer spherical surface of the harmonic oscillator 11. Therefore, when the first adjusting frame is installed into the harmonic oscillator 1, one end of the second testing terminal 9 is used for being abutted against one end of the center rod, which is located on the outer spherical surface of the harmonic oscillator 1, and the other end of the second testing terminal is suspended, so that a second testing end is formed and used for being connected with an external capacitance measuring instrument.
The first fixing cylinder 41 in this embodiment is sleeved in the middle of the first fixing table 4 and is connected to the fixing seat 42, a plurality of first fasteners 6 for fixing the excitation cover 3 and a plurality of second adjusting members 10 for radially adjusting the first spherical gap are circumferentially arranged on the side surface of the first fixing cylinder 41, and fine screws are adopted for the first fasteners 6 and the second adjusting members 10 in this embodiment. One end of each first fastening piece 6 passes through the first fixing cylinder 41 to be in butt joint with the excitation cover 3, and the other end of each first fastening piece is suspended to form a first fastening end, so that a user can adjust the distances of the first fastening pieces 6 extending into the first fixing cylinders 14 through the first fastening ends in a one-to-one correspondence manner, and the excitation cover 3 is fixed on the first adjusting frame; one end of each second adjusting piece 10 penetrates through the first fixed cylinder 41 and the excitation cover 3 to be in butt joint with the harmonic oscillator 1, the other end of each second adjusting piece is suspended to form a first radial adjusting end, and a user can adjust the distances of the plurality of second adjusting pieces 10 extending into the first fixed cylinder 41 through one-to-one correspondence of the plurality of first radial adjusting ends, so that radial adjustment of a first spherical gap between the harmonic oscillator 1 and the excitation cover 3 is achieved.
The second adjusting frame in this embodiment includes a second fixing table 13 with a second through hole in the middle, and a second fixing cylinder 14 communicating with the second through hole, where the second fixing cylinder 14 is used to set the excitation cover 3, as shown in fig. 5, and a step hole matched with the excitation cover 3 in this embodiment is formed at the top of the second fixing cylinder 14. The bottom end of the second fixing table 13 is provided with a third adjusting piece 19 which is arranged in the second through hole, one end of the third adjusting piece 19 is arranged in the second mounting hole, the other end of the third adjusting piece 19 is arranged in a suspending mode to form a second axial adjusting end, and the third adjusting piece 19 is used for providing axial support for the excitation cover 3 on one hand and realizing axial adjustment of the second spherical gap on the other hand. The third adjustment member 19 in this embodiment is a fine tooth screw.
The side of the second fixing cylinder 14 is provided with a plurality of second fasteners 15, the second fasteners 15 in the embodiment all adopt fine tooth screws, one end of each second fastener 15 passes through the second fixing cylinder 14 and is used for being abutted against the excitation cover 3, the other end is suspended, a second fastening end is formed, and a user can adjust the distance that the second fasteners 15 extend into the second fixing cylinder 14 through one-to-one correspondence of the second fastening ends, so that the excitation cover 3 is fixed on a second adjusting frame.
The top end of the second fixing table 13 of the present embodiment is provided with a plurality of support plates 16 along the periphery of the second fixing cylinder 14, and each support plate 16 in the present embodiment is connected to the second fixing table 13 by a mounting screw 18. And a fourth adjusting piece 17 is arranged on each supporting plate 16, one end of each fourth adjusting piece 17 is used for being abutted against the detection base 2, and the other end of each fourth adjusting piece is suspended to form a second radial adjusting end for realizing radial adjustment of a second spherical gap between the harmonic oscillator 1 and the detection base 2. The fourth adjustment member 17 in this embodiment is a fine tooth screw.
In this embodiment, a conductive spring 11 is sleeved on one end of each first test terminal close to the excitation cover 3 and one end of each second test terminal 9 close to the harmonic oscillator 1. In this embodiment, the electric signals on the harmonic oscillator 1 and the excitation cover 3 are led out by using the conductive spring 11, and capacitance signals at the first spherical gap part are detected in real time by using the external capacitance measuring instrument, and the first spherical gap is adjusted according to the obtained detection result, so that the gap uniformity of the first spherical gap meets the assembly requirement of the hemispherical resonator gyroscope.
Meanwhile, the invention provides a spherical gap adjusting method based on a hemispherical resonator gyro sensitive component, which is used for realizing the adjusting device and comprises the following steps:
the excitation cover 3 is fixed through a plurality of first fasteners 6, and the first adjusting piece 12 and the second adjusting pieces 10 are abutted against the harmonic oscillator 1;
the first test terminals 5 are conducted in one-to-one correspondence with the excitation electrodes on the excitation cover 3, and the second test terminals 9 are conducted in contact with one end of the center rod, which is positioned on the outer spherical surface of the harmonic oscillator 1;
in this embodiment, before the harmonic oscillator 1 and the excitation cover 3 are sequentially installed in the first adjusting frame, the harmonic oscillator 1 and the excitation cover 3 need to be cleaned and indium lined respectively, so that interference of external factors is removed, and unnecessary errors are avoided. In the embodiment, cleaning agents such as isopropanol, absolute ethyl alcohol and the like are adopted for cleaning, and an electric soldering iron is adopted for indium lining.
step 4, judging whether the gap size and the gap capacitance uniform distribution value of the obtained first spherical gap meet the assembly requirement;
if yes, executing the step 5;
if not, the first spherical gap is axially adjusted through the first adjusting piece 12, the first spherical gap is radially adjusted through the plurality of second adjusting pieces 10, and the step 2 is returned after the adjustment is completed;
in this embodiment, the resonator 1 and the excitation case 3 are connected by indium soldering by an electric iron.
the excitation cover 3 is fixed by a plurality of second fasteners 15, the third adjusting piece 19 is abutted against the excitation cover 3, and a plurality of fourth adjusting pieces 17 are abutted against the detection base 2;
introducing a third test terminal and a plurality of fourth test terminals, conducting one end of the third test terminal in contact with one end of a center rod, which is positioned on the inner spherical surface of the harmonic oscillator 1, connecting the other end of the third test terminal with an external capacitance measuring instrument, conducting one end of the fourth test terminal with a plurality of detection electrodes on the detection base 2 in a one-to-one correspondence manner, and connecting the other end of the fourth test terminal with the external capacitance measuring instrument;
in this embodiment, the end of the third test terminal near the resonator 1 and the end of each fourth test terminal near the detection base 2 are all sleeved with the conductive spring 11, and the conductive spring 11 can avoid the damage of the electrode plating layer. Before the detection base 2 is installed in the second adjusting frame, cleaning and indium lining treatment are needed, so that interference of external factors is removed, and unnecessary errors are avoided. In the embodiment, cleaning agents such as isopropanol, absolute ethyl alcohol and the like are adopted for cleaning, and an electric soldering iron is adopted for indium lining.
if yes, go to step 10;
if not, the second spherical gap is axially adjusted through the third adjusting piece 19 and the plurality of second fastening pieces 15, the radial adjustment of the second spherical gap is realized through the plurality of fourth adjusting pieces 17, and the step 7 is returned after the adjustment is completed;
in this embodiment, when the second spherical gap is axially adjusted, the second fastening member 15 is required to be loosened to fasten the excitation cover 3, and when the axial adjustment is completed by the third adjusting member 19, the second fastening member 15 is required to fasten the excitation cover 3. At this time, since the harmonic oscillator 1 is already fixedly connected to the excitation cover 3, when the excitation cover 3 is fixed by the plurality of second fasteners 15, the position of the harmonic oscillator 1 is simultaneously fixed.
at this time, the sensitive subassembly of hemisphere resonance top is assembled and is accomplished, and its inside first sphere clearance and second sphere clearance all accord with the assembly requirement.
Finally, it should be noted that: the foregoing embodiments are merely for illustrating the technical solutions of the present invention, and not for limiting the same, and it will be apparent to those skilled in the art that modifications may be made to the specific technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, without departing from the spirit of the technical solutions protected by the present invention.
Claims (9)
1. Sphere clearance adjusting device based on sensitive subassembly of hemisphere resonance top, sensitive subassembly of hemisphere resonance top is including detecting base (2), harmonic oscillator (1) and excitation cover (3), harmonic oscillator (1) are the ψ, including hemisphere casing and wear to locate its centre of sphere pole, be provided with a plurality of excitation electrodes on excitation cover (3), be provided with a plurality of detection electrodes on detecting base (2), wherein, excitation cover (3) internal surface and harmonic oscillator (1) outer sphere form first sphere clearance, harmonic oscillator (1) internal sphere and detection base (2) surface form second sphere clearance, its characterized in that: comprises a first adjusting frame and a second adjusting frame;
the first adjusting frame comprises a first fixed table (4) and a first fixed cylinder (41), a plurality of first test terminals (5) are arranged on the side face of the first fixed table (4), one ends of the first test terminals (5) are used for being connected with a plurality of excitation electrodes on the excitation cover (3) in one-to-one correspondence, and the other ends of the first test terminals extend out of the first fixed table (4) to be suspended, so that a first test end is formed; the first fixing table (4) is of a hollow structure, a fixing seat (42) is radially arranged on the inner side of the first fixing table, and a first mounting hole is formed in the middle of the fixing seat (42); the bottom end of the first fixed table (4) is provided with a first adjusting piece (12) corresponding to the first mounting hole to form a first axial adjusting end; the top end of the first fixed table (4) is provided with a supporting seat, and the middle part of the supporting seat is provided with a second test terminal (9) to form a second test end;
the first fixing cylinder (41) is sleeved at the middle part of the first fixing table (4) and connected to the fixing seat (42), and a plurality of first fasteners (6) and a plurality of second adjusting parts (10) are arranged on the side surface of the first fixing cylinder; one end of each first fastening piece (6) penetrates through a first fixing cylinder (41) to be in butt joint with the excitation cover (3), the other end of each first fastening piece forms a first fastening end, one end of each second adjusting piece (10) penetrates through the first fixing cylinder (41), the excitation cover (3) is used to be in butt joint with the harmonic oscillator (1), and the other end of each second adjusting piece forms a first radial adjusting end;
the second adjusting frame comprises a second fixed table (13) with a second through hole in the middle, and a second fixed cylinder (14) communicated with the second through hole, wherein the second fixed cylinder (14) is used for setting the excitation cover (3); the bottom end of the second fixed table (13) is provided with a third adjusting piece (19) which is arranged in the second through hole to form a second axial adjusting end; the side surface of the second fixed cylinder (14) is provided with a plurality of second fasteners (15), one end of each second fastener (15) penetrates through the second fixed cylinder (14) and is used for being abutted with the excitation cover (3), and the other end of each second fastener forms a second fastening end;
a plurality of support plates (16) are arranged on the second fixed table (13) along the periphery of the second fixed cylinder (14), fourth adjusting pieces (17) are arranged on each support plate (16), one end of each fourth adjusting piece (17) is used for being abutted to the detection base (2), and a second radial adjusting end is formed at the other end of each fourth adjusting piece.
2. The spherical gap adjustment device based on hemispherical resonator gyro sensitive components according to claim 1, wherein: the support seat comprises two support rods (7), one ends of the two support rods (7) are respectively connected with the first fixed table (4), the other ends of the two support rods are connected to a fixed plate (8), and the second test terminals (9) are arranged in the middle of the fixed plate (8);
the first fixing table (4) is in a first-stage step shape, a plurality of first test terminals (5) are circumferentially arranged on the side face of the step with smaller diameter, two support rods (7) are symmetrically arranged on the top end of the step with smaller diameter, and the fixing seat (42) is radially arranged on the inner side of the step with larger diameter.
3. The spherical gap adjustment device based on hemispherical resonator gyro sensitive components according to claim 2, wherein: and one end of each first test terminal (5) close to the excitation cover (3) and one end of each second test terminal (9) close to the harmonic oscillator (1) are sleeved with a conductive spring (11).
4. The spherical gap adjustment device based on hemispherical resonator gyro sensitive assembly according to claim 3, wherein: the first fastening piece (6), the second fastening piece (15), the first adjusting piece (12), the second adjusting piece (10), the third adjusting piece (19) and the fourth adjusting piece (17) are fine-tooth screws.
5. The spherical gap adjustment device based on hemispherical resonator gyro sensitive components according to claim 4, wherein: each supporting plate (16) is connected with the second fixed table (13) through a mounting screw (18).
6. The spherical gap adjustment device based on hemispherical resonator gyro sensitive components according to claim 5, wherein: the first mounting hole comprises a first through hole arranged in the middle of the fixing seat (42) and a columnar bulge communicated with the first through hole.
7. A spherical gap adjustment method based on hemispherical resonator gyro sensitive components, for implementing the spherical gap adjustment device based on hemispherical resonator gyro sensitive components according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
step 1, sequentially loading a harmonic oscillator (1) and an excitation cover (3) into a first adjusting frame, and enabling the excitation cover (3) to be positioned at the periphery of the harmonic oscillator (1);
the excitation cover (3) is fixed through a plurality of first fasteners (6), and a first adjusting piece (12) and a plurality of second adjusting pieces (10) are abutted with the harmonic oscillator (1);
the first test terminals (5) are conducted in one-to-one correspondence with the excitation electrodes on the excitation cover (3), and the second test terminals (9) are conducted in contact with one end of the center rod, which is positioned on the outer spherical surface of the harmonic oscillator (1);
step 2, enabling an external capacitance measuring instrument to respectively detect capacitance values between a center rod on the harmonic oscillator (1) and a plurality of excitation electrodes on the excitation cover (3) through the second test terminal (9) and the plurality of first test terminals (5), so as to obtain first detection capacitance data;
step 3, calculating to obtain the gap size and gap capacitance uniform distribution value of the first spherical gap according to the obtained first detection capacitance data;
step 4, judging whether the gap size and the gap capacitance uniform distribution value of the obtained first spherical gap meet the assembly requirement;
if yes, executing the step 5;
if not, the first spherical gap is axially adjusted through the first adjusting piece (12), the first spherical gap is radially adjusted through the plurality of second adjusting pieces (10), and the step 2 is returned after the adjustment is completed;
step 5, fixedly connecting the harmonic oscillator (1) with the excitation cover (3) to obtain the fixed harmonic oscillator (1) and the excitation cover (3);
step 6, taking out the fixed harmonic oscillator (1) and the excitation cover (3) from the first adjusting frame, then loading the harmonic oscillator and the excitation cover into the second adjusting frame, and loading the detection base (2) from the inner side of the harmonic oscillator (1);
the excitation cover (3) is fixed through a plurality of second fasteners (15), a third adjusting piece (19) is abutted with the excitation cover (3), and a plurality of fourth adjusting pieces (17) are abutted with the detection base (2);
introducing a third test terminal and a plurality of fourth test terminals, conducting one end of the third test terminal in contact with one end of the center rod, which is positioned on the inner spherical surface of the harmonic oscillator (1), and connecting the other end of the third test terminal with an external capacitance measuring instrument, conducting one end of the fourth test terminal with a plurality of detection electrodes on the detection base (2) in a one-to-one correspondence manner, and connecting the other end of the fourth test terminal with the external capacitance measuring instrument;
step 7, enabling an external capacitance measuring instrument to respectively detect capacitance values between a central rod on the harmonic oscillator (1) and a plurality of detection electrodes on the detection base (2) through the third test terminal and the fourth test terminals to obtain second detection capacitance data;
step 8, calculating the gap size and gap capacitance uniform distribution value of the second spherical gap according to the obtained second detection capacitance data;
step 9, judging whether the gap size and gap capacitance uniform distribution value of the obtained second spherical gap meet the assembly requirement;
if yes, go to step 10;
if not, the second spherical gap is axially adjusted through a third adjusting piece (19) and a plurality of second fastening pieces (15), the second spherical gap is radially adjusted through a plurality of fourth adjusting pieces (17), and the step 7 is returned after the adjustment is completed;
step 10, fixedly connecting the harmonic oscillator (1) and the excitation cover (3) with the detection base (2) respectively;
so far, the sensitive subassembly of hemisphere resonance top is accomplished the assembly, and its inside first sphere clearance and second sphere clearance all accord with the assembly requirement.
8. The spherical gap adjustment method based on hemispherical resonator gyro sensitive components according to claim 7, characterized by: in step 6, one end of the third test terminal close to the harmonic oscillator (1) and one end of each fourth test terminal close to the detection base (2) are sleeved with conductive springs (11).
9. The spherical gap adjustment method based on hemispherical resonator gyro sensitive components according to claim 8, characterized by: in the step 1 and the step 6, before the harmonic oscillator (1) and the excitation cover (3) are installed in the first adjusting frame, and before the detection base (2) is installed in the second adjusting frame, the harmonic oscillator (1), the excitation cover (3) and the detection base (2) are all cleaned and indium lined.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211724889.9A CN116164720A (en) | 2022-12-27 | 2022-12-27 | Spherical gap adjusting device and method based on hemispherical resonant gyro sensitive component |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589141A (en) * | 2024-01-18 | 2024-02-23 | 四川图林科技有限责任公司 | Two-piece hemispherical resonant gyro base and processing method thereof |
| CN118293897A (en) * | 2024-06-06 | 2024-07-05 | 四川图林科技有限责任公司 | Hemispherical resonant gyro with integrated structure |
-
2022
- 2022-12-27 CN CN202211724889.9A patent/CN116164720A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589141A (en) * | 2024-01-18 | 2024-02-23 | 四川图林科技有限责任公司 | Two-piece hemispherical resonant gyro base and processing method thereof |
| CN117589141B (en) * | 2024-01-18 | 2024-03-19 | 四川图林科技有限责任公司 | Two-piece hemispherical resonant gyro base and processing method thereof |
| CN118293897A (en) * | 2024-06-06 | 2024-07-05 | 四川图林科技有限责任公司 | Hemispherical resonant gyro with integrated structure |
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