Self-Calibrating Hemispherical Resonator System for Testing

Abstract

The present invention relates to the technical field of material property testing, and particularly to a self-calibrating hemispherical resonator system for testing. It includes a resonator body to be tested and a regulation cavity for fixing the resonator body to be tested. A plurality of groups of detection conductors corresponding to a plurality of electrode pins are arranged around the inner cavity of the regulation cavity. A connection groove for inserting the electrode pin is provided at the upper end of the detection conductor. The detection conductor includes a tuning ring in the upper section and a conductive part in the lower section. The bottom of the conductive part is connected with a signal processing unit through a wire. A driving mechanism for controlling the lifting of the detection conductor is provided at the bottom of the detection conductor, and the driving mechanism is connected with the signal processing unit. By automatically adjusting the position of the tuning ring through the driving mechanism, the present invention ensures the precise control of the resonance frequency and stress distribution, does not require manual operation for calibration, significantly reduces the operation complexity, simplifies the calibration process, and thus improves the reliability and economy of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of material property testing, and particularly to a self-calibrating hemispherical resonator system for testing. Background Art

[0002] As a core component of high-precision vibration sensors and gyroscopes, the hemispherical resonator system is widely used in fields such as inertial navigation, precision measurement, and space exploration. The hemispherical resonator system is assembled into an angular velocity sensor by welding a hemispherical resonator, an excitation cover, and a sensitive base together and sealing them in a high-vacuum container. Eight readout electrodes are equally distributed on the sensitive base and extend to an external interface through multiple vertically downward-welded electrode pins for detecting the vibration waveform of the resonator, and finally calculating the rotation angle or angular velocity of the sensor.

[0003] However, the performance of the hemispherical resonator system is vulnerable to manufacturing errors, environmental factors, and performance drift during long-term use. These problems may lead to a decrease in the accuracy of the system and fail to meet the requirements of high-precision navigation and measurement. To ensure the measurement accuracy of the hemispherical resonator system, a complex calibration process is usually required, which not only increases the usage cost of the system but also prolongs the debugging time. Traditional calibration methods rely on external devices and manual intervention, such as using precision test instruments for frequency adjustment and error compensation. Although these methods can improve the accuracy of the system to a certain extent, they have problems such as complex operation, low calibration efficiency, and susceptibility to environmental changes. Especially in cases of frequent use or harsh application environments, the manual calibration frequency is high, resulting in an increase in the system maintenance cost. Summary of the Invention

[0004] The present invention provides a self-calibrating hemispherical resonator system for testing to solve the above technical problems.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A self-calibrating hemispherical resonator system for testing includes a resonator body to be tested, and a plurality of vertically downward electrode pins are arranged around the bottom of the resonator body to be tested. The plurality of electrode pins respectively correspond to the readout electrodes on the sensitive base, and it includes a regulation cavity for fixing the resonator body to be tested. The regulation cavity is a cylindrical structure, and a plurality of groups of detection conductors respectively corresponding to the plurality of electrode pins are arranged around the inner cavity of the regulation cavity. A connection slot for inserting the electrode pin is arranged at the upper end of the detection conductor. The detection conductor includes a tuning ring in the upper section and a conductive part in the lower section. The bottom of the conductive part is connected to a signal processing unit through a wire. A driving mechanism for controlling the lifting of the detection conductor is arranged at the bottom of the detection conductor, and the driving mechanism is connected to the signal processing unit.

[0007] Further, the signal processing unit includes a signal offset detection unit and a control logic processing unit, and the signal offset detection unit is connected to the wire. Specifically, the signal offset detection unit detects the electrical signals transmitted from each electrode pin to the signal offset detection unit, and compares them with the standard parameters to monitor in real time whether there are offsets in frequency, phase or amplitude. The control logic processing unit determines the adjustment direction and movement amplitude of the tuning ring according to the offset signal transmitted from the signal offset detection unit.

[0008] Further, the signal offset detection unit is connected to the control logic processing unit. The signal offset detection unit is used to detect the change of the tuning ring position, and the control logic processing unit is used to control the regulation amount of the driving mechanism according to the difference value. Based on the characteristics of resistance and capacitance, during the up and down adjustment of the tuning ring, the tuning ring can change the electric field strength and distribution around the electrode pin, thereby realizing the adjustment of the surrounding stress field. The change of the environmental resistance value around the tuning ring affects the migration speed of free electrons in the electric field, thereby affecting the electric field strength between the electrode pin and the main body of the resonator to be measured. The change of the capacitance between the tuning ring and the electrode pin causes the change of the electric field distribution. The change amplitude of the capacitance effect can finely adjust the electrostatic force exerted by the electric field on the main body of the resonator to be measured, and further affect the local stress field, so that the vibration characteristics of the main body of the resonator to be measured change slightly. When the driving mechanism moves the tuning ring according to the instruction of the control logic processing unit, the anti-signal offset detection unit detects the actual displacement of the tuning ring to ensure that the position change of the tuning ring meets the expectation. After obtaining the actual displacement data of the tuning ring, the control logic processing unit compares it with the target displacement value. If a deviation is detected between the actual displacement and the target displacement value, the system will immediately correct the operation of the driving mechanism. Through the closed-loop control of the signal processing unit, the system can accurately control the frequency and stress distribution of the main body of the resonator to be measured in a non-contact manner.

[0009] Further, an adaptive calibration algorithm module for calculating the position of the tuning ring is also integrated on the control logic processing unit. The adaptive calibration algorithm module analyzes the current offset situation based on the data fed back by the signal offset detection unit, and the algorithm then determines the calibration direction and the amplitude of adjustment required. The algorithm calculates the appropriate position of the tuning ring according to the amplitude and direction of the offset, so that the main body of the resonator to be measured can return to the target frequency and stress distribution state. After each fine adjustment, the system collects the data of the tuning ring position and the current resonance frequency again through the real-time data of the signal offset detection unit, and compares it with the target displacement value to confirm the calibration progress. If there is still a deviation from the target displacement value, the algorithm will continue the next fine adjustment.

[0010] Further, the signal processing unit is disposed at the bottom of the inner cavity of the regulation cavity, the control logic processing unit is installed on top of the signal processing unit, and the driving mechanism is installed on top of the control logic processing unit. After receiving the control signal from the control logic processing unit, any driving mechanism activates the lifting component on the driving mechanism through the power supply unit disposed in the control logic processing unit, thereby directly controlling the lifting of the tuning ring and reducing mechanical resistance and interference.

[0011] Further, a guiding ring for defining the electrode pins is upwardly extended from the upper end of the tuning ring. The guiding ring provides stable insertion and support for any one of the electrode pins, preventing the electrode pins from skewing or wobbling when inserted into the tuning ring. It ensures that the electrode pins are always located in the connection slots of the detection conductor, thereby stabilizing the electric field distribution between the electrodes and the tuning ring, and further ensuring reliable measurement of the vibration characteristics. In addition, the physical constraint function of the guiding ring helps the electrode pins avoid signal distortion and wear caused by offset or poor contact during position adjustment, while improving the alignment of the electrode pins with the conductive part and reducing measurement errors.

[0012] Further, the inner diameter of the regulation cavity is not less than the outer diameter of the lower end of the resonator under test, and a locking mechanism for clamping the resonator under test is provided at the upper end of the regulation cavity. The locking mechanism provides a fixed clamping structure at the upper end of the cavity. After the resonator under test is inserted, the locking mechanism can firmly lock it in the cavity, preventing position offset or loosening during testing or adjustment. The locking mechanism is convenient for installation and disassembly. Through the clamping operation, the resonator under test can be quickly loaded into or removed from the cavity, facilitating debugging and maintenance, and also ensuring the efficiency of the test process. In addition, the locking mechanism stably fixes the resonator under test in the regulation cavity, effectively reducing the wobbling of the resonator under test and the influence of external vibration during the vibration test, thereby improving the accuracy and stability of the test data. It avoids measurement errors of the resonance frequency and stress distribution caused by unstable position of the main body.

[0013] Further, the locking mechanism includes a threaded ring and a threaded groove adapted to the threaded ring. The threaded groove is provided on the outer peripheral wall of the upper end of the regulation cavity, and a plurality of vertical cuts are formed at the top of the regulation cavity. By rotating the threaded ring, a stable clamping force is formed on the top of the regulation cavity, and then the threaded ring is locked in the threaded groove. The plurality of vertical cuts can provide a certain elastic adjustment space during the clamping process, enabling the upper end of the regulation cavity to expand or contract during the rotation adjustment of the threaded ring, thereby providing flexible fixing strength. By tightening the threaded ring, the resonator under test can be fixed to prevent displacement or loosening during the test.

[0014] Furthermore, a plurality of equally spaced limiting protrusions are provided on the inner surface of the tuning ring, and the limiting protrusions are in contact with the electrode pins. When the electrode pins are inserted into the connection slots and come into contact with the limiting protrusions, the limiting protrusions guide part of the electric field to the periphery of the electrodes, introducing the electric field of the tuning ring body into the space around the electrode pins, and finely adjusting the electric field strength in this area by controlling the electric field distribution. The limiting protrusions can not only conduct the static electric field, but also enable the local electric field of the electrode pins to respond to the electrical signals of the control system. Through the feedback monitoring of the control logic processing unit, the electric field conduction characteristics of the limiting protrusions can provide higher-sensitivity data in frequency fine-tuning, helping the system to monitor in real time and dynamically adjust the frequency and stress distribution of the resonator under test. This can improve the adjustment efficiency of the entire system, enabling the resonator under test to quickly achieve the self-calibration effect. In addition, the plurality of limiting protrusions on the inner surface of the tuning ring are distributed at equal intervals, ensuring that the electrode pins are always stably clamped around it and effectively preventing lateral displacement.

[0015] Furthermore, the tuning ring is made of a composite material. A layer of conductive material is embedded in the tuning ring, and a thermal-sensitive layer is provided outside the tuning ring. The embedded conductive material forms an "active" regulation layer. During the up-and-down adjustment of the tuning ring, the electromagnetic interaction between this layer and the surrounding electrodes will generate a regulation force field microscopically, enhancing the electrostatic field effect between the electrodes and the resonator under test, so as to achieve the purpose of finely adjusting the vibration frequency. The thermal-sensitive layer outside the tuning ring can automatically adjust its own resistance value according to the change of the ambient temperature, thereby compensating for the change of the resonance frequency. When the temperature rises, the resistance of the thermal-sensitive layer may increase to suppress the frequency increase caused by the temperature rise; when the temperature drops, the resistance decreases to maintain the balance of the system frequency. This automatic compensation mechanism effectively offsets the influence of temperature fluctuations on the resonance system, enabling the resonator under test to maintain stable vibration characteristics under different temperature conditions and improving the adaptability of the system in complex environments.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the present invention detects the offset of the electrode pin signal, it can automatically adjust the position of the tuning ring through the driving mechanism to ensure the precise control of the resonance frequency and stress distribution, without manual operation for calibration, significantly reducing the operation complexity and improving the calibration efficiency;

[0018] 2. Through the real-time adjustment of the signal processing unit and the driving mechanism, the present invention can adapt to manufacturing errors and performance drifts generated during long-term use, maintain the stability of the resonance frequency and the accuracy of measurement, contribute to meeting the requirements of high-precision navigation and precision measurement, and at the same time omit the testing process of other precision testing instruments;

[0019] 3. The present invention realizes automatic adjustment and compensation through an adaptive calibration algorithm, which can reduce the calibration frequency caused by external environmental changes or frequent use, reduce the labor cost of maintenance and the equipment downtime, simplify the calibration process, and thus improve the reliability and economy of the system. Description of the Drawings

[0020] Figure 1 is a schematic plan view of the present invention;

[0021] Figure 2 is a cross-sectional view of the regulation cavity;

[0022] Figure 3 is a schematic installation structure view of the resonator under test main body and the regulation cavity;

[0023] Figure 4 is a cross-sectional view of the detection conductor;

[0024] Figure 5 is a flowchart of the present invention;

[0025] Reference Numerals in the Drawings: 1 - resonator under test main body, 2 - electrode pins, 3 - regulation cavity, 301 - notch, 4 - detection conductor, 401 - connection groove, 402 - tuning ring, 403 - conductive part, 404 - guide ring, 5 - wire, 6 - signal offset detection unit, 7 - driving mechanism, 8 - control logic processing unit, 9 - threaded ring. Detailed Embodiments

[0026] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with embodiments and the drawings. The illustrative embodiments and descriptions thereof of the present invention are only used to explain the present invention and shall not be construed as a limitation to the present invention.

[0027] Embodiment 1, as Figures 1-5 shown, the self-calibrating hemispherical resonator system for testing disclosed by the present invention includes a resonator under test main body 1, and a plurality of vertically downward electrode pins 2 are arranged around the bottom of the resonator under test main body 1. The plurality of electrode pins 2 respectively correspond to the readout electrodes on the sensitive base. The system further includes a regulation cavity 3 for fixing the resonator under test main body 1. The regulation cavity 3 is of a cylindrical structure. A plurality of groups of detection conductors 4 respectively corresponding to the plurality of electrode pins 2 are arranged around the inner cavity of the regulation cavity 3. A connection groove 401 for inserting the electrode pins 2 is arranged at the upper end of the detection conductor 4. The detection conductor 4 includes an upper tuning ring 402 and a lower conductive part 403. The bottom of the conductive part 403 is connected to a signal processing unit through a wire 5. A driving mechanism 7 for controlling the lifting of the detection conductor 4 is arranged at the bottom of the detection conductor 4. The driving mechanism 7 is connected to the signal processing unit.

[0028] The signal processing unit includes a signal offset detection unit 6 and a control logic processing unit 8. The signal offset detection unit 6 is connected to the wire 5. Specifically, the signal offset detection unit 6 detects the electrical signals transmitted from each electrode pin 2 to the signal offset detection unit 6 and compares them with standard parameters to monitor in real time whether there are offsets in frequency, phase, or amplitude. The control logic processing unit 8 determines the adjustment direction and movement amplitude of the tuning ring 402 according to the offset signal transmitted from the signal offset detection unit 6.

[0029] The signal offset detection unit 6 is connected to the control logic processing unit 8. The signal offset detection unit 6 is used to detect the change in the position of the tuning ring 402, and the control logic processing unit 8 is used to control the regulation amount of the drive mechanism 7 according to the difference. Specifically, based on the characteristics of resistance and capacitance, during the up and down adjustment of the tuning ring 402, the tuning ring 402 can change the electric field intensity and distribution around the electrode pin 2, thereby realizing the adjustment of the surrounding stress field. The change in the environmental resistance value around the tuning ring 402 affects the migration speed of free electrons in the electric field, thereby affecting the electric field intensity between the electrode pin 2 and the resonator body 1 to be measured. This will finely adjust the tiny current distribution generated on the surface of the resonator body 1 to be measured. The change in the capacitance between the tuning ring 402 and the electrode pin 2 causes a change in the electric field distribution. The change amplitude of the capacitance effect can finely adjust the electrostatic force exerted by the electric field on the resonator body 1 to be measured, thereby affecting the local stress field and causing subtle changes in the vibration characteristics of the resonator body 1 to be measured. When the drive mechanism 7 moves the tuning ring 402 according to the instruction of the control logic processing unit 8, the feedback signal offset detection unit 6 detects the actual displacement of the tuning ring 402 to ensure that the position change of the tuning ring 402 meets the expectation. After obtaining the actual displacement data of the tuning ring 402, the control logic processing unit 8 compares it with the target displacement value. If a deviation is detected between the actual displacement and the target displacement value, the system will immediately correct the operation of the drive mechanism 7. Through the closed-loop control of the signal processing unit, the system can accurately control the frequency and stress distribution of the resonator body 1 to be measured in a non-contact manner.

[0030] An adaptive calibration algorithm module for calculating the position of the tuning ring 402 is also integrated on the control logic processing unit 8. Specifically, the adaptive calibration algorithm module analyzes the current offset situation based on the data fed back by the signal offset detection unit 6, and the algorithm determines the calibration direction and the required adjustment amplitude accordingly. The algorithm calculates the appropriate position of the tuning ring 402 according to the amplitude and direction of the offset to restore the resonator body 1 to be measured to the target frequency and stress distribution state. After each fine adjustment, the system collects the data of the position of the tuning ring 402 and the current resonance frequency again through the signal offset detection unit 6 and compares it with the target displacement value to confirm the calibration progress. If there is still a deviation from the target displacement value, the algorithm continues the next fine adjustment.

[0031] The signal processing unit is arranged at the bottom of the inner cavity of the regulation cavity 3, the control logic processing unit 8 is installed on the top of the signal processing unit, and the driving mechanism 7 is installed on the top of the control logic processing unit 8. Specifically, after receiving the control signal from the control logic processing unit 8, any driving mechanism 7 drives the lifting component on the driving mechanism 7 to move through the power supply unit arranged in the control logic processing unit 8, thereby directly controlling the lifting of the tuning ring 402 and reducing mechanical resistance and interference. Preferably, the signal processing unit is arranged at the bottom of the regulation cavity 3, which helps to avoid the influence of electromagnetic interference generated by the tuning ring 402 or the driving mechanism 7 on signal acquisition, thus ensuring the accuracy of signal detection.

[0032] A guiding ring 404 for defining the electrode pin 2 is upwardly extended at the upper end of the tuning ring 402. Specifically, the guiding ring 404 provides stable insertion and support for any one of the electrode pins 2, preventing the electrode pin 2 from being skewed or shaken when inserted into the tuning ring 402. It ensures that the electrode pin 2 is always located in the connection groove 401 of the test conductor 4, so that the electric field distribution between the electrode and the tuning ring 402 is stable, and further ensures the reliable measurement of vibration characteristics. In addition, the physical constraint function of the guiding ring 404 helps the electrode pin 2 to avoid signal distortion and wear caused by offset or poor contact during position adjustment, while improving the alignment degree of the electrode pin 2 and the conductive part 403 and reducing measurement errors.

[0033] The inner diameter of the regulation cavity 3 is not less than the outer diameter of the lower end of the to-be-tested resonator body 1, and a locking mechanism for clamping the to-be-tested resonator body 1 is arranged at the upper end of the regulation cavity 3. Specifically, the locking mechanism provides a fixed clamping structure at the upper end position of the cavity. After the to-be-tested resonator body 1 is inserted, the locking mechanism can firmly lock it in the cavity, preventing position offset or loosening during the test or adjustment process. The locking mechanism is convenient for installation and disassembly. Through the clamping operation, the to-be-tested resonator body 1 can be quickly loaded into or taken out of the cavity, which is convenient for debugging and maintenance, and also ensures the high efficiency of the test process. In addition, the locking mechanism stably fixes the to-be-tested resonator body 1 in the regulation cavity 3, which can effectively reduce the shaking of the to-be-tested resonator body 1 and the influence of external vibration during the vibration test, thereby improving the accuracy and stability of the test data. It avoids measurement errors of the resonance frequency and stress distribution caused by unstable position of the main body.

[0034] The locking mechanism includes a threaded ring 9 and a threaded groove adapted to the threaded ring 9. The threaded groove is provided on the outer peripheral wall of the upper end of the regulation cavity 3, and a plurality of vertical cuts 301 are formed at the top of the regulation cavity 3. Specifically, by rotating the threaded ring 9, a stable clamping force is formed at the top of the regulation cavity 3 by the threaded ring 9, and then the threaded ring 9 is locked in the threaded groove. The plurality of vertical cuts 301 can provide a certain elastic adjustment space during the clamping process, enabling the upper end of the regulation cavity 3 to generate a slight expansion or contraction during the rotation adjustment process of the threaded ring 9, thereby providing flexible fixing strength. By tightening the threaded ring 9, the to-be-tested resonator body 1 can be fixed to prevent displacement or loosening during the test.

[0035] A plurality of equally spaced limiting protrusions are provided on the inner surface of the tuning ring 402, and the limiting protrusions are in contact with the electrode pins 2. Specifically, when the electrode pins 2 are inserted into the connection groove 401 and come into contact with the limiting protrusions, the limiting protrusions guide part of the electric field to the periphery of the electrodes, introducing the electric field of the tuning ring 402 body into the space around the electrode pins 2, and finely adjusting the electric field strength in this area by controlling the electric field distribution. The limiting protrusions can not only conduct the static electric field, but also enable the local electric field of the electrode pins 2 to respond to the electrical signals of the control system. Through the feedback monitoring of the control logic processing unit 8, the electric field conduction characteristics of the limiting protrusions can provide higher-sensitivity data in the frequency fine-tuning, helping the system to monitor in real time and dynamically adjust the frequency and stress distribution of the to-be-tested resonator body 1. This can improve the adjustment efficiency of the entire system and enable the to-be-tested resonator body 1 to quickly achieve the self-calibration effect. In addition, the plurality of limiting protrusions on the inner surface of the tuning ring 402 are equally spaced, ensuring that the electrode pins 2 are always stably clamped around it, effectively preventing lateral displacement. This can avoid poor contact or signal distortion caused by the displacement of the electrode pins 2 and ensure the accuracy of the test signal.

[0036] The tuning ring 402 is made of a composite material. A layer of conductive material is embedded in the tuning ring 402, and a thermal-sensitive layer is provided outside the tuning ring 402. Specifically, the embedded conductive material forms an "active" regulation layer. During the up-and-down adjustment process of the tuning ring 402, the electromagnetic interaction between this layer and the surrounding electrodes will generate an adjustment force field microscopically, enhancing the electrostatic field effect between the electrodes and the to-be-tested resonator body 1, so as to achieve the purpose of finely adjusting the vibration frequency. The thermal-sensitive layer outside the tuning ring 402 can automatically adjust its own resistance value according to the change of the ambient temperature, thereby compensating for the change of the resonance frequency. When the temperature rises, the resistance of the thermal-sensitive layer may increase to suppress the frequency increase caused by the temperature rise; when the temperature drops, the resistance decreases to maintain the balance of the system frequency. This automatic compensation mechanism effectively offsets the influence of temperature fluctuations on the resonance system, enabling the to-be-tested resonator body 1 to still maintain stable vibration characteristics under different temperature conditions and improving the adaptability of the system in complex environments.

[0037] Embodiment 2. On the basis of Embodiment 1, this embodiment proposes the specific working principle of the self-calibrating hemispherical resonator system for testing.

[0038] The specific implementation principle process is as follows:

[0039] Place the resonator body 1 to be tested in the regulation cavity 3, and ensure that all electrode pins 2 are respectively inserted into the connection slots 401 of the corresponding multiple detection conductors 4. Adjust the rotating threaded ring 9 to fix the resonator body 1 to be tested, ensuring that it does not displace during the test. Before the test starts, seal the regulation cavity 3 with the resonator body 1 to be tested in a high-vacuum container to assemble an angular velocity sensor. The signal offset detection unit 6 starts to monitor the electrical signals transmitted from the electrode pins 2 to the signal offset detection unit 6, and obtains the vibration waveform of the resonator body 1 to be tested by rotation. At this time, compare the real-time monitored signal with the standard parameters to judge the offset of the current frequency, phase or amplitude. The control logic processing unit 8 judges the adjustment direction and moving amplitude of the tuning ring 402 according to the offset signal. The driving mechanism 7 receives the instruction of the control logic processing unit 8 and adjusts the position of the tuning ring 402 to change the electric field intensity and distribution around the electrode pins 2. At the same time, the signal offset detection unit 6 monitors the displacement of the tuning ring 402 in real time to ensure that it meets the expectations. The control logic processing unit 8 compares the actual displacement with the target displacement value. If there is a deviation, it immediately corrects the operation of the driving mechanism 7. The adaptive calibration algorithm module analyzes the data provided by the signal offset detection unit 6 to judge the calibration direction and adjustment amplitude. After each fine adjustment, the signal offset detection unit 6 collects the data of the position of the tuning ring 402 and the current resonance frequency again, and compares it with the target displacement value. During the test, the thermosensitive layer automatically adjusts its own resistance value according to the ambient temperature change, so as to compensate for the frequency offset caused by the temperature change. After multiple fine adjustments of the system, it is confirmed that the vibration characteristics of the resonator body 1 to be tested are stable and reach the target displacement value, and the test is completed. The working principle is as follows:

[0040] The up and down adjustment of the tuning ring 402 will change the distance between it and the electrode pins 2, and the distance change will affect the electric field intensity and distribution around the electrodes. According to the basic principle of the electric field, the electric field intensity is closely related to the distribution of charges, relative positions and the medium characteristics between them. Therefore, by adjusting the position of the tuning ring 402, fine adjustment of the electric field can be achieved. The capacitance change between the tuning ring 402 and the electrode pins 2 will affect the electric field distribution. The fine adjustment of the capacitance will cause the change of the migration speed of free electrons in the electric field, and then affect the electric field intensity between the electrode pins 2 and the resonator body 1 to be tested. During the adjustment process, the system monitors the output signal of the electrode pins 2 in real time through the signal processing unit, and compares it with the standard parameters to detect signal offset.

[0041] The control logic processing unit 8 determines the adjustment direction and amplitude of the tuning loop 402 according to the signal offset detection result, and thus makes corresponding adjustments. The feedback mechanism ensures the accuracy and real-time performance of the adjustment process.

[0042] Of course, the present invention may have many other implementation manners. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A self-calibrating hemispherical resonator system for testing, comprising a resonator body under test (1), wherein a plurality of vertically downward electrode pins (2) are arranged around the bottom of the resonator body under test (1), and the plurality of electrode pins (2) respectively correspond to the readout electrodes on the sensitive base, and is characterized in that: It includes a regulation cavity (3) for fixing the resonator body (1) to be measured. The regulation cavity (3) is of a cylindrical structure. Multiple groups of detection conductors (4) corresponding to multiple electrode pins (2) respectively are arranged around the inner cavity of the regulation cavity (3). A connection slot (401) for inserting the electrode pin (2) is arranged at the upper end of the detection conductor (4). The detection conductor (4) includes a tuning ring (402) in the upper section and a conductive part (403) in the lower section. The bottom of the conductive part (403) is connected to a signal processing unit through a wire (5). A driving mechanism (7) for controlling the lifting of the detection conductor (4) is arranged at the bottom of the detection conductor (4). The driving mechanism (7) is connected to the signal processing unit; the signal processing unit includes a signal offset detection unit (6) and a control logic processing unit (8). The signal offset detection unit (6) is connected to the wire (5); the signal offset detection unit (6) is connected to the control logic processing unit (8). The signal offset detection unit (6) is used to detect the position change of the tuning ring (402). The control logic processing unit (8) is used to control the regulation amount of the driving mechanism (7) according to the difference value; a guiding ring (404) for limiting the electrode pin (2) is arranged at the upper end of the tuning ring (402) extending upward; a plurality of equally spaced limiting protrusions are arranged on the inner surface of the tuning ring (402). The limiting protrusions are in contact with the electrode pin (2); the tuning ring (402) is made of a composite material. A layer of conductive material is embedded in the tuning ring (402), and a thermal-sensitive layer is arranged outside the tuning ring (402).

2. The self-calibrating hemispherical resonator system for testing according to claim 1, wherein: An adaptive calibration algorithm module for calculating the position of the tuning ring (402) is also integrated on the control logic processing unit.

3. The self-calibrating hemispherical resonator system for testing according to claim 1, wherein: The signal processing unit is arranged at the bottom of the inner cavity of the regulation cavity (3). The control logic processing unit (8) is installed on the top of the signal processing unit. The driving mechanism (7) is installed on the top of the control logic processing unit (8).

4. The self-calibrating hemispherical resonator system for testing according to claim 1, characterized in that: The inner diameter of the regulation cavity ( 5. The self-calibrating hemispherical resonator system for testing according to claim 4, characterized in that: ​

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