Spherical gap adjustment device and method based on hemispherical resonant gyroscope sensitive component

Abstract

The present invention relates to a hemispherical resonant gyroscope, and more particularly to a spherical gap adjustment device and method based on a hemispherical resonant gyroscope sensitive component. The device aims to solve the technical problem that existing devices, when adjusting the spherical gap of the hemispherical resonant gyroscope, not only require a large number of auxiliary instruments but also cannot achieve axial adjustment simultaneously with radial adjustment. The device provides a spherical gap adjustment device based on a hemispherical resonant gyroscope sensitive component, comprising a first adjustment frame and a second adjustment frame. First and second adjustment members on the first adjustment frame are respectively used to achieve axial and radial adjustment of the first spherical gap. Third and fourth adjustment members on the second adjustment frame are respectively used to achieve axial and radial adjustment of the second spherical gap. When adjusting the gap portion, a capacitance signal of the gap portion can be detected in real time by an external capacitance measuring instrument, so that the gap size and uniformity of the gap portion can quickly meet assembly requirements.

Description

Technical Field

[0001] The invention relates to a hemispherical resonant gyroscope, and in particular to a spherical surface gap adjustment device and an adjustment method based on a sensitive component of the hemispherical resonant gyroscope. Background Art

[0002] A hemispherical resonator gyroscope (HRG), a new type of solid-state gyroscope, senses base rotation through the precession effect of radial standing waves. In existing technology, if the spherical gap size and uniformity of the HRG's sensitive components during assembly do not meet assembly requirements, the gyroscope's output detection signal will exhibit phase and amplitude errors, which in turn affect the HRG's overall performance.

[0003] Chinese invention patent publication number CN103644901A discloses an assembly fixture and assembly testing system for a hemispherical resonant gyroscope (HRG) sensitive meter head. The assembly fixture includes a base, a hollow cylinder, a dowel screw, four support rods, and four depth micrometers. The depth micrometers and the dowel screws are used to fine-tune the uniformity of the spherical gap. However, this technical solution requires a large number of instruments to assist in adjusting the spherical gap and can only perform radial adjustment, failing to simultaneously achieve axial adjustment and testing. Summary of the Invention

[0004] The purpose of the present invention is to solve the technical problems in the prior art of adjusting the spherical gap of a hemispherical resonant gyroscope, which not only requires a large number of auxiliary instruments but also cannot achieve axial adjustment while adjusting the radial direction. The present invention provides a spherical gap adjustment device and method based on a sensitive component of a hemispherical resonant gyroscope.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A spherical gap adjustment device based on a hemispherical resonant gyroscope sensitive component, the hemispherical resonant gyroscope sensitive component comprising a detection base, a resonator, and an excitation cover. The resonator is ψ-shaped, comprising a hemispherical shell and a center rod passing through its center. The excitation cover is provided with a plurality of excitation electrodes, and the detection base is provided with a plurality of detection electrodes. The inner surface of the excitation cover and the outer spherical surface of the resonator form a first spherical gap, and the inner spherical surface of the resonator and the outer surface of the detection base form a second spherical gap. The device is special in that it comprises a first adjustment frame and a second adjustment frame.

[0007] The first adjustment frame includes a first fixed platform and a first fixed cylinder, a plurality of first test terminals are provided on the side of the first fixed platform, one end of the plurality of first test terminals is used to be connected one-to-one with the plurality of excitation electrodes on the excitation cover, and the other ends are all extended out of the first fixed platform and arranged in the air to form a first test end; the first fixed platform is a hollow structure, and a fixed seat is radially provided on the inner side, and a first mounting hole is provided in the middle of the fixed seat; a first adjusting piece corresponding to the first mounting hole is provided at the bottom end of the first fixed platform, forming a first axial adjustment end; a support seat is provided at the top end of the first fixed platform, and a second test terminal is provided in the middle of the support seat, forming a second test end;

[0008] The first fixing cylinder is sleeved on the middle part of the first fixing platform and connected to the fixing seat, and a plurality of first fasteners and a plurality of second adjustment members are provided on its side; one end of each of the first fasteners passes through the first fixing cylinder to abut against the excitation cover, and the other end forms a first fastening end; one end of each of the second adjustment members passes through the first fixing cylinder and the excitation cover to abut against the resonator, and the other end forms a first radial adjustment end;

[0009] The second adjustment frame includes a second fixing platform with a second through hole in the middle, and a second fixing cylinder connected to the second through hole, the second fixing cylinder is used to set the excitation cover; the bottom end of the second fixing platform is provided with a third adjustment member installed in the second through hole to form a second axial adjustment end; a plurality of second fasteners are provided on the side of the second fixing cylinder, one end of each second fastener passes through the second fixing cylinder to abut against the excitation cover, and the other end forms a second fastening end;

[0010] The second fixing platform is provided with a plurality of support plates along the periphery of the second fixing cylinder, each support plate is provided with a fourth adjustment member, one end of each fourth adjustment member is used to abut against the detection base, and the other end forms a second radial adjustment end.

[0011] Furthermore, the support base includes two support rods, one end of each of the two support rods is connected to the first fixing platform, and the other end is connected to a fixing plate, and the second test terminal is provided in the middle of the fixing plate;

[0012] The first fixing platform is in the shape of a step, and a plurality of first test terminals are circumferentially arranged on the side of the step with a smaller diameter, the two support rods are symmetrically arranged on the top of the step with a smaller diameter, and the fixing seat is radially arranged on the inner side of the step with a larger diameter.

[0013] Furthermore, each of the first test terminals, one end close to the excitation cover, and one end of the second test terminal close to the resonator are both sleeved with a conductive spring.

[0014] Furthermore, the first fastener, the second fastener, the first adjusting member, the second adjusting member, the third adjusting member and the fourth adjusting member are all fine-thread screws.

[0015] Furthermore, each of the support plates is connected to the second fixing platform via mounting screws.

[0016] Furthermore, the first mounting hole includes a first through hole provided in the middle of the fixing seat, and a columnar protrusion communicating with the first through hole.

[0017] At the same time, based on the above adjustment device, the present invention provides a spherical gap adjustment method based on a hemispherical resonant gyro sensitive component, which is used to adjust the first spherical gap and the second spherical gap. The special feature of the method is that it includes the following steps:

[0018] Step 1: Install the resonator and the excitation cover into the first adjustment frame in sequence, and make the excitation cover be located outside the resonator;

[0019] Fixing the excitation cover by a plurality of first fasteners, and making the first adjustment member and a plurality of second adjustment members abut against the resonator;

[0020] Make the multiple first test terminals electrically connected to the multiple excitation electrodes on the excitation cover in a one-to-one correspondence, and make the second test terminal electrically connected to one end of the center rod located on the outer spherical surface of the resonator;

[0021] Step 2: Using an external capacitance measuring instrument to detect capacitance values ​​between the central rod of the resonator and the plurality of excitation electrodes on the excitation cover through the second test terminal and the plurality of first test terminals, respectively, to obtain first detection capacitance data;

[0022] Step 3, calculating the gap size and gap capacitance uniform distribution value of the first spherical gap based on the obtained first detection capacitance data;

[0023] Step 4, determining whether the gap size and gap capacitance uniform distribution value of the obtained first spherical gap meet assembly requirements;

[0024] If yes, go to step 5;

[0025] If not, axially adjust the first spherical clearance using a first adjusting member, radially adjust the first spherical clearance using a plurality of second adjusting members, and return to step 2 after the adjustment is completed;

[0026] Step 5, fixing the resonator and the excitation cover to obtain a fixed resonator and the excitation cover;

[0027] Step 6: Take out the fixed resonator and excitation cover from the first adjustment frame and install them into the second adjustment frame, and install the detection base from the inner side of the resonator;

[0028] The excitation cover is fixed by a plurality of second fasteners, and the third adjustment member is in contact with the excitation cover, and the plurality of fourth adjustment members are in contact with the detection base;

[0029] Introducing a third test terminal and a plurality of fourth test terminals, connecting one end of the third test terminal to the end of the center rod located on the inner spherical surface of the resonator, and connecting the other end to an external capacitance measuring instrument; and connecting one end of the plurality of fourth test terminals to the plurality of detection electrodes on the detection base in a one-to-one correspondence, and connecting the other ends to the external capacitance measuring instrument;

[0030] Step 7, using an external capacitance measuring instrument to respectively detect capacitance values ​​between the central rod of the resonator and the plurality of detection electrodes on the detection base through the third test terminal and the plurality of fourth test terminals, to obtain second detection capacitance data;

[0031] Step 8, calculating the gap size and gap capacitance uniform distribution value of the second spherical gap based on the obtained second detection capacitance data;

[0032] Step 9, determining whether the gap size and gap capacitance uniform distribution value of the obtained second spherical gap meet the assembly requirements;

[0033] If yes, go to step 10;

[0034] If not, axially adjust the second spherical clearance using the third adjusting member and the plurality of second fasteners, and radially adjust the second spherical clearance using the plurality of fourth adjusting members, and return to step 7 after the adjustment is completed;

[0035] Step 10, fixing the resonator and the excitation cover to the detection base respectively;

[0036] At this point, the hemispherical resonant gyro sensitive component is assembled, and the first spherical surface gap and the second spherical surface gap inside the hemispherical resonant gyro sensitive component meet the assembly requirements.

[0037] Furthermore, in step 6, one end of the third test terminal close to the resonator and one end of each of the fourth test terminals close to the detection base are both sleeved with a conductive spring.

[0038] Furthermore, in step 1 and step 6, before the resonator and the excitation cover are installed in the first adjustment frame, and before the detection base is installed in the second adjustment frame, the resonator, the excitation cover and the detection base are all cleaned and indium-lined.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. The spherical gap adjustment device based on the hemispherical resonant gyroscope sensitive component provided by the present invention realizes axial adjustment and radial adjustment of the first spherical gap respectively through the first adjustment member and the second adjustment member on the first adjustment frame, and realizes axial adjustment and radial adjustment of the second spherical gap respectively through the third adjustment member and the fourth adjustment member on the second adjustment frame. When adjusting the first spherical gap or the second spherical gap, the capacitance signal of the gap portion can be detected in real time by an external capacitance measuring instrument, and the capacitance signal change of the gap portion during the adjustment process can be intuitively displayed, so that the gap size and uniformity of the first spherical gap and the second spherical gap can quickly meet assembly requirements.

[0041] 2. The spherical gap adjustment device based on the hemispherical resonant gyroscope sensitive component provided by the present invention installs conductive springs at one end of each first test terminal close to the excitation cover, one end of the second test terminal close to the resonator, one end of the third test terminal close to the resonator, and one end of each fourth test terminal close to the detection base. When the capacitance is tested, the conductive springs are used to detect the capacitance signals on the resonator, the excitation cover and the detection base, thereby avoiding damage to the electrode plating that is easily caused by an external capacitance measuring instrument during detection.

[0042] 3. The present invention provides a method for adjusting the spherical gap based on a hemispherical resonant gyroscope sensitive component. First, the first spherical gap is adjusted by the first adjustment frame in the above-mentioned device. After the adjustment is completed, the resonator and the excitation cover are fixed. Then, the second spherical gap is adjusted by the second adjustment frame in the above-mentioned device. After the adjustment is completed, the resonator and the excitation cover are fixedly connected to the detection base respectively. In this way, rapid assembly of the hemispherical resonant gyroscope sensitive component is achieved, so that the first spherical gap and the second spherical gap inside the hemispherical resonant gyroscope meet the assembly requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic structural diagram of a hemispherical resonant gyro sensitive component in an embodiment of a spherical gap adjustment device based on a hemispherical resonant gyro sensitive component provided by the present invention;

[0044] Figure 2 A schematic structural diagram of a first adjustment frame in an embodiment of a spherical gap adjustment device based on a hemispherical resonant gyro sensitive component provided by the present invention;

[0045] Figure 3 For the embodiment of the present invention Figure 2 A schematic cross-sectional view along the central axis of the first fixed cylinder;

[0046] Figure 4 For the embodiment of the present invention Figure 2 Schematic diagram of the installation of the resonator, the excitation cover and the first adjustment frame;

[0047] Figure 5A schematic structural diagram of a second adjustment frame in an embodiment of a spherical gap adjustment device based on a hemispherical resonant gyro sensitive component provided by the present invention;

[0048] Figure 6 For the embodiment of the present invention Figure 5 A schematic cross-sectional view along the central axis of the second fixed cylinder;

[0049] Figure 7 For the embodiment of the present invention Figure 5 Schematic diagram of the installation of the middle excitation cover, resonator, detection base and second adjustment frame;

[0050] Figure 8 A flow chart of adjusting the first spherical gap in an embodiment of the spherical gap adjustment method based on a hemispherical resonant gyro sensitive component provided by the present invention;

[0051] Figure 9 A flow chart of adjusting the second spherical gap in an embodiment of the spherical gap adjustment method based on the hemispherical resonant gyro sensitive component provided by the present invention;

[0052] Description of reference numerals:

[0053] 1- resonator, 2- detection base, 3- excitation cover, 4- first fixing platform, 41- first fixing cylinder, 42- fixing base, 5- first test terminal, 6- first fastener, 7- support rod, 8- fixing plate, 9- second test terminal, 10- second adjusting member, 11- conductive spring, 12- first adjusting member, 13- second fixing platform, 14- second fixing cylinder, 15- second fastener, 16- support plate, 17- fourth adjusting member, 18- mounting screw, 19- third adjusting member. DETAILED DESCRIPTION

[0054] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0055] In the prior art, a hemispherical resonator gyroscope (HRG) sensor assembly includes, from inside to outside, a detection base 2, a resonator 1, and an excitation cover 3. The resonator 1 is ψ-shaped, comprising a hemispherical shell and a central rod extending through its center. The excitation cover 3 is entirely coated, and its inner surface is provided with multiple excitation electrodes carved out by ion etching. These multiple excitation electrodes can be led to the outer edge of the excitation cover 3, enabling multiple excitation electrodes to perform measurements from the outer edge of the excitation cover 3. The detection base 2 is entirely coated, and its outer surface is provided with multiple detection electrodes carved out by ion etching. These multiple detection electrodes can be led to small holes at the end surface of the detection base 2, enabling multiple detection electrodes to perform measurements from the small holes at the end surface of the detection base 2. A first spherical gap is formed between the inner surface of the excitation cover 3 and the outer spherical surface of the resonator 1, and a second spherical gap is formed between the inner spherical surface of the resonator 1 and the outer surface of the detection base 2. The present invention is used to adjust these first and second spherical gaps.

[0056] The present invention provides a spherical gap adjustment device based on a hemispherical resonator gyroscope sensitive component, comprising a first adjustment frame and a second adjustment frame, wherein the first adjustment frame is used to adjust the inner surface of an excitation cover 3 and the outer spherical surface of a resonator 1 to form a first spherical gap, and the second adjustment frame is used to adjust the inner spherical surface of the resonator 1 and the outer surface of a detection base 2 to form a second spherical gap.

[0057] The first adjustment frame in this embodiment includes a first fixed platform 4 and a first fixed cylinder 41, wherein the first fixed platform 4 is a hollow structure and is in the shape of a step, and a plurality of first test terminals 5 are circumferentially arranged on the side of the step with a smaller diameter, which are used to realize the extraction of electrical signals from the multiple excitation electrodes on the excitation cover 3. One end of the multiple first test terminals 5 is used to connect one-to-one with the multiple excitation electrodes on the excitation cover 3, so as to realize the contact and conduction between the multiple excitation electrodes and the first test terminals 5, and the other end is suspended to form a first test end for connection with an external capacitance measuring instrument. As described above, the multiple excitation electrodes are all led to the outer edge of the excitation cover 3, and the multiple first test terminals 5 only need to abut against the corresponding positions on the outer edge of the excitation cover 3 to realize the one-to-one correspondence between the multiple first test terminals 5 and the multiple excitation electrodes on the excitation cover 3.

[0058] In this embodiment, a fixing seat 42 is radially disposed on the inner side of the larger diameter step of the first fixing platform 4. A first mounting hole is disposed in the middle of the fixing seat 42. The first mounting hole in this embodiment comprises a first through-hole disposed in the middle of the fixing seat 42 and a columnar protrusion connected thereto, which is used to limit the position of the center rod at one end of the inner spherical surface of the resonator 1. A first adjusting member 12 is disposed at the bottom end of the first fixing platform 4, corresponding to the first mounting hole. One end of the first adjusting member 12 is installed in the first mounting hole, and the other end is suspended in the air, forming a first axial adjustment end. The provision of the first adjusting member 12 is used to provide axial support for the resonator 1 and to achieve axial adjustment of the first spherical gap. In this embodiment, the first adjusting member 12 is a fine-thread screw.

[0059] In this embodiment, a support seat is provided at the top of the step with a smaller diameter of the first fixed platform 4. The support seat in this embodiment includes two support rods 7 symmetrically arranged at the top of the step with a smaller diameter of the first fixed platform 4. The top surfaces of the two support rods 7 are connected to the fixed plate 8. The two ends of the support rod 7 used in this embodiment are respectively provided with threads with opposite spiral directions, so that the support rod 7 can be connected to the fixed plate 8 and the first fixed platform 4 at the same time. A second test terminal 9 is provided in the middle of the fixed plate 8 for realizing the electrical signal extraction of the center rod located at one end of the outer spherical surface of the resonator 11. Therefore, when the first adjustment frame in this embodiment is installed in the resonator 1, one end of the second test terminal 9 is used to abut against the end of the center rod located at the outer spherical surface of the resonator 1, and the other end is left suspended to form a second test end for connection to an external capacitance measuring instrument.

[0060] In this embodiment, the first fixing cylinder 41 is sleeved on the middle portion of the first fixing platform 4 and connected to the fixing seat 42. A plurality of first fasteners 6 for fixing the excitation cover 3 and a plurality of second adjustment members 10 for radially adjusting the first spherical gap are circumferentially arranged on the side of the first fixing cylinder 41. In this embodiment, the first fasteners 6 and the second adjustment members 10 are both fine-thread screws. One end of each first fastener 6 passes through the first fixing cylinder 41 for contact with the excitation cover 3, while the other end is suspended in the air, forming a first fastening end. A user can use the multiple first fastening ends to adjust the distance that the multiple first fasteners 6 extend into the interior of the first fixing cylinder 14, thereby securing the excitation cover 3 to the first adjustment frame. One end of each second adjustment member 10 passes through the first fixing cylinder 41 and the excitation cover 3 for contact with the resonator 1, while the other end is suspended in the air, forming a first radial adjustment end. A user can use the multiple first radial adjustment ends to adjust the distance that the multiple second adjustment members 10 extend into the interior of the first fixing cylinder 41, thereby achieving radial adjustment of the first spherical gap between the resonator 1 and the excitation cover 3.

[0061] The second adjustment frame in this embodiment includes a second fixing platform 13 with a second through hole in the middle, and a second fixing cylinder 14 connected to the second through hole. The second fixing cylinder 14 is used to set the excitation cover 3. Figure 5 As shown, the top of the second fixing cylinder 14 is a stepped hole that mates with the excitation cover 3 in this embodiment. A third adjustment member 19 is provided at the bottom end of the second fixing platform 13, which fits into the second through hole. One end of the third adjustment member 19 is inserted into the second mounting hole, while the other end is suspended in the air, forming a second axial adjustment end. This third adjustment member 19 is provided to provide axial support for the excitation cover 3 and to achieve axial adjustment of the second spherical clearance. In this embodiment, the third adjustment member 19 is a fine-thread screw.

[0062] A plurality of second fasteners 15 are provided on the side of the second fixed tube 14. In this embodiment, the plurality of second fasteners 15 are all fine-thread screws. One end of each second fastener 15 passes through the second fixed tube 14 for contacting with the excitation cover 3, and the other end is suspended to form a second fastening end. The user can adjust the distance of the plurality of second fasteners 15 extending into the interior of the second fixed tube 14 one by one through the plurality of second fastening ends, so as to fix the excitation cover 3 on the second adjustment frame.

[0063] In this embodiment, multiple support plates 16 are disposed at the top of the second fixing platform 13 along the periphery of the second fixing cylinder 14. In this embodiment, each support plate 16 is connected to the second fixing platform 13 via mounting screws 18. Each support plate 16 is provided with a fourth adjustment member 17. One end of each fourth adjustment member 17 is configured to abut against the detection base 2, while the other end is suspended in the air, forming a second radial adjustment end for radially adjusting the second spherical gap between the resonator 1 and the detection base 2. In this embodiment, the fourth adjustment member 17 utilizes a fine-thread screw.

[0064] In this embodiment, a conductive spring 11 is mounted on the end of each first test terminal proximate to the excitation cover 3, as well as the end of each second test terminal 9 proximate to the resonator 1. This embodiment utilizes the conductive spring 11 to conduct electrical signals from the resonator 1 and the excitation cover 3. An external capacitance measuring instrument is then used to perform real-time capacitance measurements of the first spherical gap. Based on the measurement results, the first spherical gap is adjusted to ensure that the gap uniformity of the first spherical gap meets the assembly requirements of the hemispherical resonator gyroscope.

[0065] At the same time, the present invention provides a spherical gap adjustment method based on a hemispherical resonant gyro sensitive component, which is used to implement the above-mentioned adjustment device, comprising the following steps:

[0066] Step 1: Install the resonator 1 and the excitation cover 3 into the first adjustment frame in sequence, and make the excitation cover 3 be located outside the resonator 1;

[0067] The excitation cover 3 is fixed by a plurality of first fasteners 6, and the first adjustment member 12 and the plurality of second adjustment members 10 are all in contact with the resonator 1;

[0068] Make the multiple first test terminals 5 and the multiple excitation electrodes on the excitation cover 3 correspond to each other and make the second test terminal 9 contact and be connected with one end of the center rod located on the outer spherical surface of the resonator 1;

[0069] In this embodiment, before the resonator 1 and the excitation cover 3 are sequentially installed in the first adjustment frame, they must first be cleaned and enamelled to remove interference from external factors and avoid unnecessary errors. In this embodiment, cleaning agents such as isopropyl alcohol and anhydrous ethanol are used for cleaning, and enamelling is performed using an electric soldering iron.

[0070] Step 2: Using an external capacitance measuring instrument to detect capacitance values ​​between the central rod on the resonator 1 and the multiple excitation electrodes on the excitation cover 3 through the second test terminal and the multiple first test terminals, respectively, to obtain first detection capacitance data;

[0071] Step 3, calculating the gap size and gap capacitance uniform distribution value of the first spherical gap based on the obtained first detection capacitance data;

[0072] Step 4, determining whether the gap size and gap capacitance uniform distribution value of the obtained first spherical gap meet assembly requirements;

[0073] If yes, go to step 5;

[0074] If not, the first spherical clearance is adjusted axially by the first adjusting member 12 and radially by the second adjusting members 10, and after the adjustment is completed, the process returns to step 2;

[0075] Step 5, fixing the resonator 1 and the excitation cover 3 to obtain a fixed resonator 1 and the excitation cover 3;

[0076] In this embodiment, the resonator 1 and the excitation cover 3 are connected by indium soldering with an electric soldering iron.

[0077] Step 6: Take out the fixed resonator 1 and the excitation cover 3 from the first adjustment frame and install them into the second adjustment frame, and install the detection base 2 from the inner side of the resonator 1;

[0078] The excitation cover 3 is fixed by a plurality of second fasteners 15, and the third adjustment member 19 is in contact with the excitation cover 3, and the plurality of fourth adjustment members 17 are in contact with the detection base 2;

[0079] Introduce a third test terminal and multiple fourth test terminals, connect one end of the third test terminal to the end of the center rod located on the inner spherical surface of the resonator 1, and connect the other end to an external capacitance measuring instrument. Also, connect one end of the multiple fourth test terminals to the multiple detection electrodes on the detection base 2 in a one-to-one correspondence, and connect the other ends to the external capacitance measuring instrument.

[0080] In this embodiment, the end of the introduced third test terminal near the resonator 1 and the end of each fourth test terminal near the detection base 2 are each sheathed with a conductive spring 11. The provision of conductive spring 11 prevents damage to the electrode plating. Furthermore, before installing the detection base 2 into the second adjustment frame, it must be cleaned and indium-coated to remove interference from external factors and avoid unnecessary errors. In this embodiment, cleaning agents such as isopropyl alcohol and anhydrous ethanol are used for cleaning, and indium-coating is performed with an electric soldering iron.

[0081] Step 7: Using an external capacitance measuring instrument to detect capacitance values ​​between the central rod of the resonator 1 and the plurality of detection electrodes on the detection base 2 through the third test terminal and the plurality of fourth test terminals, respectively, to obtain second detection capacitance data;

[0082] Step 8: Calculate the gap size and gap capacitance uniform distribution value of the second spherical gap based on the obtained second detection capacitance data;

[0083] Step 9, determining whether the gap size and gap capacitance uniform distribution value of the obtained second spherical gap meet the assembly requirements;

[0084] If yes, go to step 10;

[0085] If not, the second spherical clearance is axially adjusted by the third adjusting member 19 and the plurality of second fasteners 15, and the second spherical clearance is radially adjusted by the plurality of fourth adjusting members 17, and after the adjustment is completed, the process returns to step 7;

[0086] In this embodiment, when axially adjusting the second spherical clearance, the second fasteners 15 securing the excitation cover 3 need to be loosened. After the axial adjustment is completed using the third adjusting member 19, the excitation cover 3 is then tightened using the second fasteners 15. At this point, since the resonator 1 and the excitation cover 3 are already fixedly connected, when the excitation cover 3 is secured using the multiple second fasteners 15, the position of the resonator 1 is also fixed.

[0087] Step 10, fixedly connecting the resonator 1 and the excitation cover 3 to the detection base 2 respectively;

[0088] At this point, the hemispherical resonant gyro sensitive component is assembled, and the first spherical gap and the second spherical gap inside the hemispherical resonant gyro sensitive component both meet the assembly requirements.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. For ordinary professional and technical personnel in this field, the specific technical solutions recorded in the aforementioned embodiments can be modified, or some of the technical features therein can be replaced by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions protected by the present invention.

Claims

1. A spherical gap adjustment device based on a hemispherical resonant gyro sensitive component, wherein the hemispherical resonant gyro sensitive component comprises a detection base (2), a resonator (1) and an excitation cover (3), wherein the resonator (1) is ψ-shaped and comprises a hemispherical shell and a central rod passing through the center of the sphere, a plurality of excitation electrodes are provided on the excitation cover (3), and a plurality of detection electrodes are provided on the detection base (2), wherein: The inner surface of the excitation cover (3) and the outer spherical surface of the resonator (1) form a first spherical gap, and the inner spherical surface of the resonator (1) and the outer surface of the detection base (2) form a second spherical gap. The invention is characterized in that it comprises a first adjustment frame and a second adjustment frame; The first adjustment frame includes a first fixed platform (4) and a first fixed cylinder (41), a plurality of first test terminals (5) are provided on the side of the first fixed platform (4), one end of the plurality of first test terminals (5) is used for correspondingly connecting with the plurality of excitation electrodes on the excitation cover (3), and the other end extends out of the first fixed platform (4) and is suspended in the air to form a first test end; the first fixed platform (4) is a hollow structure, and a fixed seat (42) is radially provided on the inner side, and a first mounting hole is provided in the middle of the fixed seat (42); a first adjustment member (12) corresponding to the first mounting hole is provided at the bottom end of the first fixed platform (4) to form a first axial adjustment end; a support seat is provided at the top end of the first fixed platform (4), and a second test terminal (9) is provided in the middle of the support seat to form a second test end; The first fixing tube (41) is sleeved on the middle part of the first fixing platform (4) and connected to the fixing seat (42), and a plurality of first fasteners (6) and a plurality of second adjusting members (10) are provided on its side; one end of each of the first fasteners (6) passes through the first fixing tube (41) for contacting the excitation cover (3), and the other end forms a first fastening end; one end of each of the second adjusting members (10) passes through the first fixing tube (41) and the excitation cover (3) for contacting the resonator (1), and the other end forms a first radial adjusting end; The second adjustment frame includes a second fixing platform (13) with a second through hole in the middle, and a second fixing cylinder (14) connected to the second through hole, the second fixing cylinder (14) is used to set the excitation cover (3); the bottom end of the second fixing platform (13) is provided with a third adjustment member (19) inserted into the second through hole to form a second axial adjustment end; a plurality of second fasteners (15) are provided on the side of the second fixing cylinder (14), one end of each second fastener (15) passes through the second fixing cylinder (14) to abut against the excitation cover (3), and the other end forms a second fastening end; A plurality of support plates (16) are provided on the second fixed platform (13) along the periphery of the second fixed cylinder (14), and each support plate (16) is provided with a fourth adjustment member (17). One end of each fourth adjustment member (17) is used to abut against the detection base (2), and the other end forms a second radial adjustment end.

2. The spherical gap adjustment device based on the hemispherical resonant gyro sensitive component according to claim 1 is characterized in that: The support base comprises two support rods (7), one end of each of the two support rods (7) is connected to the first fixing platform (4), and the other end is connected to a fixing plate (8), and the second test terminal (9) is arranged in the middle of the fixing plate (8); The first fixing platform (4) is in the shape of a step, a plurality of first test terminals (5) are circumferentially arranged on the side of the step with a smaller diameter, the two support rods (7) are symmetrically arranged on the top of the step with a smaller diameter, and the fixing seat (42) is radially arranged on the inner side of the step with a larger diameter.

3. The spherical gap adjustment device based on the hemispherical resonant gyro sensitive component according to claim 2, characterized in that: An end of each of the first test terminals (5) close to the excitation cover (3) and an end of each of the second test terminals (9) close to the resonator (1) are both sleeved with a conductive spring (11).

4. The spherical gap adjustment device based on the hemispherical resonant gyro sensitive component according to claim 3 is characterized in that: The first fastener (6), the second fastener (15), the first adjusting member (12), the second adjusting member (10), the third adjusting member (19) and the fourth adjusting member (17) are all fine-thread screws.

5. The spherical gap adjustment device based on the hemispherical resonant gyro sensitive component according to claim 4 is characterized in that: Each of the support plates (16) is connected to the second fixing platform (13) via mounting screws (18).

6. The spherical gap adjustment device based on the hemispherical resonant gyro sensitive component according to claim 5, characterized in that: The first mounting hole comprises a first through hole arranged in the middle of the fixing seat (42), and a columnar protrusion communicating with the first through hole.

7. A method for adjusting the spherical gap of a hemispherical resonant gyro sensitive component, for implementing the spherical gap adjustment device of any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: sequentially install the resonator (1) and the excitation cover (3) into a first adjustment frame, and position the excitation cover (3) outside the resonator (1); The excitation cover (3) is fixed by a plurality of first fasteners (6), and the first adjustment member (12) and the plurality of second adjustment members (10) are all in contact with the resonator (1); The plurality of first test terminals (5) are connected to the plurality of excitation electrodes on the excitation cover (3) in a one-to-one correspondence, and the second test terminal (9) is connected to one end of the center rod located on the outer spherical surface of the resonator (1); Step 2, using an external capacitance measuring instrument to detect capacitance values ​​between the central rod on the resonator (1) and the plurality of excitation electrodes on the excitation cover (3) through the second test terminal (9) and the plurality of the first test terminals (5), respectively, to obtain first detection capacitance data; Step 3, calculating the gap size and gap capacitance uniform distribution value of the first spherical gap based on the obtained first detection capacitance data; Step 4, determining whether the gap size and gap capacitance uniform distribution value of the obtained first spherical gap meet assembly requirements; If yes, go to step 5; If not, the first spherical clearance is axially adjusted by a first adjusting member (12), and the first spherical clearance is radially adjusted by a plurality of second adjusting members (10), and after the adjustment is completed, the process returns to step 2; Step 5, fixedly connecting the resonator (1) and the excitation cover (3) to obtain a fixed resonator (1) and the excitation cover (3); Step 6, taking the fixed resonator (1) and the excitation cover (3) out of the first adjustment frame and installing them into the second adjustment frame, and installing the detection base (2) from the inner side of the resonator (1); The excitation cover (3) is fixed by a plurality of second fasteners (15), and a third adjustment member (19) is brought into contact with the excitation cover (3), and a plurality of fourth adjustment members (17) are brought into contact with the detection base (2); A third test terminal and a plurality of fourth test terminals are introduced, one end of the third test terminal is brought into contact with an end of the center rod located on the inner spherical surface of the resonator (1) for conduction, and the other end is connected to an external capacitance measuring instrument, and one end of the plurality of fourth test terminals is brought into contact with a plurality of detection electrodes on the detection base (2) for one-to-one correspondence, and the other end is connected to the external capacitance measuring instrument; Step 7, using an external capacitance measuring instrument to respectively detect capacitance values ​​between the central rod on the resonator (1) and the plurality of detection electrodes on the detection base (2) through the third test terminal and the plurality of 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 based on the obtained second detection capacitance data; Step 9, determining whether the gap size and gap capacitance uniform distribution value of the obtained second spherical gap meet the assembly requirements; If yes, go to step 10; If not, the second spherical clearance is axially adjusted by the third adjusting member (19) and the plurality of second fasteners (15), and the second spherical clearance is radially adjusted by the plurality of fourth adjusting members (17), and after the adjustment is completed, the process returns to step 7; Step 10, fixedly connecting the resonator (1) and the excitation cover (3) to the detection base (2) respectively; At this point, the hemispherical resonant gyro sensitive component is assembled, and the first spherical surface gap and the second spherical surface gap inside the hemispherical resonant gyro sensitive component meet the assembly requirements.

8. The method for adjusting the spherical gap based on the hemispherical resonant gyro sensitive component according to claim 7, characterized in that: In step 6, one end of the third test terminal close to the resonator (1) and one end of each of the fourth test terminals close to the detection base (2) are both sleeved with a conductive spring (11).

9. The method for adjusting the spherical gap based on the hemispherical resonant gyro sensitive component according to claim 8, characterized in that: In step 1 and step 6, before the resonator (1) and the excitation cover (3) are installed in the first adjustment frame, and before the detection base (2) is installed in the second adjustment frame, the resonator (1), the excitation cover (3) and the detection base (2) are all cleaned and indium-lined.

Images