Self-calibrating hemispherical resonator subsystem for testing

Abstract

The invention relates to the technical field of material performance testing, in particular to a self-calibration hemispherical resonance subsystem for testing, which comprises a to-be-tested harmonic oscillator main body and a regulation cavity for fixing the to-be-tested harmonic oscillator main body, a plurality of groups of detection conductors respectively corresponding to a plurality of electrode pins are arranged in an inner cavity of the regulation cavity in a surrounding manner, and the detection conductors are connected with the to-be-tested harmonic oscillator main body. The upper end of the detection conductor is provided with a connecting groove for an electrode pin to insert, the detection conductor comprises an upper-section tuning ring and a lower-section conductive part, the bottom of the conductive part is connected with a signal processing unit through a wire, and the bottom of the detection conductor is provided with a driving mechanism for controlling the detection conductor to ascend and descend. And the driving mechanism is connected with the signal processing unit. The position of the tuning ring is automatically adjusted through the driving mechanism, accurate control over the resonant frequency and stress distribution is ensured, manual operation calibration is not needed, the operation complexity is remarkably reduced, the calibration process is simplified, and therefore the reliability and economical efficiency of the system are improved.

Description

Technical Field

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

[0002] As a core component of high-precision vibration sensors and gyroscopes, hemispherical resonator systems are widely used in 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 sensing base together, sealing them in a high-vacuum container. Eight readout electrodes are evenly spaced on the sensing base, extending to external interfaces via multiple vertically welded electrode pins. These electrodes detect the resonator's vibration waveform and ultimately determine the sensor's rotational angle or angular velocity.

[0003] However, the performance of the hemispherical resonator system is susceptible to manufacturing errors, environmental factors, and performance drift during long-term use. These problems may lead to a decrease in system accuracy, making it unable to meet the needs of high-precision navigation and measurement. In order to ensure the measurement accuracy of the hemispherical resonator system, a complex calibration process is usually required, which not only increases the cost of using the system but also prolongs the debugging time. Traditional calibration methods rely on external equipment 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 frequency of manual calibration is high, resulting in increased system maintenance costs. Summary of the Invention

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

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A self-calibrating hemispherical resonator system for testing includes a resonator body to be tested, the bottom of which is surrounded by a plurality of vertically downward electrode pins, the plurality of electrode pins respectively corresponding to readout electrodes on a sensitive base, and a control cavity for fixing the resonator body to be tested, the control cavity being a cylindrical structure, the inner cavity of the control cavity being surrounded by a plurality of groups of detection conductors respectively corresponding to the plurality of electrode pins, the upper end of the detection conductor being provided with a connection groove for inserting the electrode pins, the detection conductor including an upper tuning ring and a lower conductive portion, the bottom of the conductive portion being connected to a signal processing unit via a wire, the bottom of the detection conductor being provided with a driving mechanism for controlling the lifting and lowering of the detection conductor, the driving mechanism being connected to the signal processing unit.

[0006] Furthermore, the signal processing unit includes a signal offset detection unit and a control logic processing unit, wherein the signal offset detection unit is connected to the wire. Specifically, the signal offset detection unit detects the electrical signal transmitted from each electrode pin to the signal offset detection unit and compares it with standard parameters to monitor in real time whether there is any frequency, phase, or amplitude offset. The control logic processing unit determines the adjustment direction and movement amplitude of the tuning ring based on the offset signal transmitted by the signal offset detection unit.

[0007] Furthermore, the signal offset detection unit is connected to the control logic processing unit, and the signal offset detection unit is used to detect the change in the position of the tuning ring, and the control logic processing unit is used to control the control amount of the driving mechanism according to the difference. Based on the characteristics of resistance and capacitance, during the adjustment of the tuning ring, the tuning ring can change the electric field strength and distribution around the electrode pin, thereby achieving adjustment of the surrounding stress field. The change in 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 resonator body to be measured. The change in capacitance between the tuning ring and the electrode pin causes a change in the electric field distribution. The change in the amplitude of the capacitance effect can fine-tune the electrostatic force generated by the electric field on the resonator body to be measured, thereby affecting the local stress field, causing subtle changes in the vibration characteristics of the resonator body to be measured. When the driving mechanism moves the tuning ring according to the instructions 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 is in line with expectations. 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 and target displacement values, the system will immediately correct the operation of the drive mechanism. Through the closed-loop control of the signal processing unit, the system can precisely control the frequency and stress distribution of the measured resonator body in a non-contact manner.

[0008] Furthermore, the control logic processing unit is also integrated with an adaptive calibration algorithm module for calculating the position of the tuning ring. 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 determines the direction of calibration and the amplitude of the required adjustment accordingly. The algorithm calculates the appropriate position of the tuning ring based on the amplitude and direction of the offset so that the main body of the resonator to be measured can be restored to the target frequency and stress distribution state. After each fine-tuning, the system collects the data of the tuning ring position and the current resonant 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 to the next fine-tuning.

[0009] Furthermore, the signal processing unit is disposed at the bottom of the inner cavity of the control chamber, the control logic processing unit is mounted on top of the signal processing unit, and the drive mechanism is mounted on top of the control logic processing unit. After receiving a control signal from the control logic processing unit, any drive mechanism, through a power supply unit disposed within the control logic processing unit, drives the lifting assembly on the drive mechanism to move, thereby directly controlling the lifting and lowering of the tuning ring, thereby reducing mechanical resistance and interference.

[0010] Furthermore, a guide ring for limiting the electrode pins is provided on the upper end of the tuning ring. The guide ring provides stable insertion and support for any electrode pin, preventing the electrode pin from deflecting or shaking when inserted into the tuning ring. It ensures that the electrode pin is always in the connection groove of the detection conductor, thereby stabilizing the electric field distribution between the electrode and the tuning ring, thereby ensuring reliable measurement of the vibration characteristics. In addition, the physical constraint function of the guide ring helps the electrode pin avoid signal distortion and wear caused by offset or poor contact during position adjustment, while improving the alignment of the electrode pin and the conductive part, reducing measurement errors.

[0011] Furthermore, the inner diameter of the control cavity is not less than the outer diameter of the lower end of the resonator body to be tested, and the upper end of the control cavity is provided with a locking mechanism for clamping the resonator body to be tested. The locking mechanism provides a fixed clamping structure at the upper end of the cavity. When the resonator body to be tested is inserted, the locking mechanism can firmly lock it in the cavity to prevent position displacement or loosening during the test or adjustment process. The locking mechanism is easy to install and disassemble. Through the clamping operation, the resonator body to be tested can be quickly loaded into or taken out of the cavity, which is convenient for debugging and maintenance, and also ensures the efficiency of the test process. In addition, the locking mechanism stably fixes the resonator body to be tested in the control cavity, which can effectively reduce the shaking of the resonator body to be tested during the vibration test and the influence of external vibration, thereby improving the accuracy and stability of the test data. The measurement errors of the resonant frequency and stress distribution caused by the unstable position of the main body are avoided.

[0012] Furthermore, the locking mechanism includes a threaded ring and a threaded groove adapted to the threaded ring, wherein the threaded groove is provided on the outer peripheral wall of the upper end of the control cavity, and a plurality of vertical cutouts are provided on the top of the control cavity. By rotating the threaded ring, a stable clamping force is formed on the top of the control cavity, thereby locking the threaded ring in the threaded groove. The plurality of vertical cutouts can provide a certain elastic adjustment space during the clamping process, so that the upper end of the control cavity can expand or contract during the rotation adjustment of the threaded ring, thereby providing flexible fixing strength. By tightening the threaded ring, the main body of the resonator to be tested can be fixed to prevent displacement or loosening during the test process.

[0013] Furthermore, the inner surface of the tuning ring is provided with a plurality of equally spaced limiting protrusions, which abut against the electrode pins. When the electrode pins are inserted into the connection slots and contact the limiting protrusions, the limiting protrusions guide part of the electric field to the area around 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 static electric fields, but also enable the local electric field of the electrode pins to respond to the electrical signals of the control system. Through feedback monitoring of the control logic processing unit, the electric field conduction characteristics of the limiting protrusions can provide more sensitive data in frequency fine-tuning, helping the system to monitor and dynamically adjust the frequency and stress distribution of the resonator body to be measured in real time. This can improve the adjustment efficiency of the entire system and enable the resonator body to be measured to quickly achieve self-calibration. In addition, the multiple limiting protrusions on the inner surface of the tuning ring are distributed in an equidistant manner to ensure that the electrode pins are always stably clamped around them, effectively preventing lateral displacement.

[0014] Furthermore, the tuning ring is made of a composite material, with a layer of conductive material embedded within it and a thermally sensitive layer disposed on the outside. The embedded conductive material forms an "active" control layer. During the tuning ring's adjustment, the electromagnetic interaction between this layer and the surrounding electrodes generates a microscopic control force field, enhancing the electrostatic field effect between the electrodes and the resonator under test, thereby achieving fine-tuning of the vibration frequency. The thermally sensitive layer on the outside of the tuning ring automatically adjusts its resistance based on ambient temperature changes, thereby compensating for changes in the resonant frequency. When the temperature rises, the resistance of the thermally sensitive layer may increase, thereby suppressing the frequency increase caused by the temperature increase; when the temperature drops, the resistance decreases, maintaining the system frequency balance. This automatic compensation mechanism effectively offsets the effects of temperature fluctuations on the resonant system, allowing the resonator under test to maintain stable vibration characteristics under different temperature conditions, thereby improving the system's adaptability in complex environments.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can automatically adjust the position of the tuning ring through the driving mechanism when the offset of the electrode pin signal is detected, ensuring precise control of the resonant frequency and stress distribution. It does not require manual calibration, significantly reduces operational complexity, and improves calibration efficiency. 2. The present invention can adapt to manufacturing errors and performance drift caused by long-term use through real-time adjustment of the signal processing unit and the drive mechanism, maintain the stability of the resonant frequency and the accuracy of the measurement, and help meet the needs of high-precision navigation and precision measurement, while omitting the testing process of other precision test instruments; 3. The present invention realizes automatic adjustment and compensation through an adaptive calibration algorithm, which can reduce the calibration frequency caused by changes in the external environment or frequent use, reduce maintenance labor costs and equipment downtime, simplify the calibration process, and thus improve the reliability and economy of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the planar structure of the present invention; Figure 2 is a cross-sectional view of the control cavity; Figure 3 This is a schematic diagram of the installation structure of the resonator body to be measured and the control cavity; Figure 4 is a cross-sectional view of the detection conductor; Figure 5 It is a flowchart of the present invention; Figure identification: 1-resonator body to be tested, 2-electrode pin, 3-control cavity, 301-incision, 4-detection conductor, 401-connection slot, 402-tuning ring, 403-conductive part, 404-guide ring, 5-conducting wire, 6-signal offset detection unit, 7-driving mechanism, 8-control logic processing unit, 9-threaded ring. DETAILED DESCRIPTION

[0017] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0018] Example 1, as Figure 1-5 As shown, the self-calibration hemispherical resonator system for testing disclosed in the present invention includes a resonator body 1 to be tested, and the bottom of the resonator body 1 to be tested is surrounded by a plurality of vertically downward electrode pins 2, and the plurality of electrode pins 2 respectively correspond to the readout electrodes on the sensitive base. It also includes a control cavity 3 for fixing the resonator body 1 to be tested, and the control cavity 3 is a cylindrical structure. The inner cavity of the control cavity 3 is surrounded by a plurality of groups of detection conductors 4 corresponding to the plurality of electrode pins 2 respectively. The upper end of the detection conductor 4 is provided with a connection groove 401 for inserting the electrode pin 2, and 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 the signal processing unit through a wire 5, and the bottom of the detection conductor 4 is provided with a driving mechanism 7 for controlling the lifting of the detection conductor 4, and the driving mechanism 7 is connected to the signal processing unit.

[0019] 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 signal transmitted to the signal offset detection unit 6 by each electrode pin 2 and compares it with standard parameters to monitor in real time whether there is any frequency, phase, or amplitude offset. The control logic processing unit 8 determines the adjustment direction and movement amplitude of the tuning ring 402 based on the offset signal transmitted by the signal offset detection unit 6.

[0020] 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 control amount of the driving mechanism 7 according to the difference. Specifically, based on the characteristics of resistance and capacitance, during the adjustment of the tuning ring 402, the tuning ring 402 can change the electric field strength and distribution around the electrode pin 2, thereby adjusting 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 strength between the electrode pin 2 and the resonator body 1 to be measured. This will fine-tune the tiny current distribution generated on the surface of the resonator body 1 to be measured. The change in capacitance between the tuning ring 402 and the electrode pin 2 causes a change in the electric field distribution. The change in the capacitance effect can fine-tune the electrostatic force generated by the electric field on the resonator body 1 to be measured, thereby affecting the local stress field, causing subtle changes in the vibration characteristics of the resonator body 1 to be measured. When drive mechanism 7 moves tuning ring 402 according to the instructions of control logic processing unit 8, feedback signal offset detection unit 6 detects the actual displacement of tuning ring 402 to ensure that the position change of tuning ring 402 meets the expected requirements. After obtaining the actual displacement data of tuning ring 402, control logic processing unit 8 compares it with the target displacement value. If a deviation between the actual displacement and the target displacement value is detected, the system will immediately correct the operation of 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 under test in a non-contact manner.

[0021] The control logic processing unit 8 is also integrated with an adaptive calibration algorithm module for calculating the position of the tuning ring 402. Specifically, the adaptive calibration algorithm module analyzes the current offset based on the data fed back by the signal offset detection unit 6, and the algorithm determines the direction of calibration and the required adjustment amplitude accordingly. The algorithm calculates the appropriate position of the tuning ring 402 based on the amplitude and direction of the offset so that the resonator body 1 to be measured can be restored to the target frequency and stress distribution state. After each fine-tuning, the system collects the data of the tuning ring 402 position and the current resonant 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 will continue to the next fine-tuning.

[0022] The signal processing unit is arranged at the bottom of the inner cavity of the control cavity 3, the control logic processing unit 8 is installed on the top of the signal processing unit, and the drive 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 drive mechanism 7 activates the lifting component on the drive mechanism 7 through the power supply unit set in the control logic processing unit 8, thereby directly controlling the lifting and lowering of the tuning ring 402, reducing mechanical resistance and interference. Preferably, the signal processing unit is arranged at the bottom of the control cavity 3 to help avoid the influence of electromagnetic interference generated by the tuning ring 402 or the drive mechanism 7 on signal acquisition, thereby ensuring the accuracy of signal detection.

[0023] The upper end of the tuning ring 402 is extended upward to provide a guide ring 404 for limiting the electrode pin 2. Specifically, the guide ring 404 provides stable insertion and support for any electrode pin 2, preventing the electrode pin 2 from deflecting or shaking when inserted into the tuning ring 402. It ensures that the electrode pin 2 is always in the connection groove 401 of the detection conductor 4, so that the electric field distribution between the electrode and the tuning ring 402 is stable, thereby ensuring reliable measurement of the vibration characteristics. In addition, the physical constraint function of the guide ring 404 helps the electrode pin 2 avoid signal distortion and wear caused by offset or poor contact during position adjustment, while improving the alignment of the electrode pin 2 and the conductive part 403, reducing measurement errors.

[0024] The inner diameter of the control cavity 3 is not less than the outer diameter of the lower end of the resonator body 1 to be tested, and the upper end of the control cavity 3 is provided with a locking mechanism for clamping the resonator body 1 to be tested. Specifically, the locking mechanism provides a fixed clamping structure at the upper end of the cavity. When the resonator body 1 to be tested is inserted, the locking mechanism can firmly lock it in the cavity to prevent position displacement or loosening during the test or adjustment process. The locking mechanism is easy to install and disassemble. Through the clamping operation, the resonator body 1 to be tested can be quickly loaded into or taken out of the cavity, which is convenient for debugging and maintenance, and also ensures the efficiency of the test process. In addition, the locking mechanism stably fixes the resonator body 1 to be tested in the control cavity 3, which can effectively reduce the shaking and external vibration influence of the resonator body 1 to be tested during the vibration test, thereby improving the accuracy and stability of the test data. The measurement errors of the resonant frequency and stress distribution caused by the unstable position of the main body are avoided.

[0025] The locking mechanism includes a threaded ring 9 and a threaded groove adapted to the threaded ring 9, wherein the threaded groove is arranged on the outer peripheral wall of the upper end of the regulating cavity 3, and a plurality of vertical cutouts 301 are provided on the top of the regulating cavity 3. Specifically, by rotating the threaded ring 9, a stable clamping force is formed on the top of the regulating cavity 3 by the threaded ring 9, thereby locking the threaded ring 9 in the threaded groove. The plurality of vertical cutouts 301 can provide a certain elastic adjustment space during the clamping process, so that the upper end of the regulating cavity 3 can produce a slight expansion or contraction during the rotation adjustment of the threaded ring 9, thereby providing flexible fixing strength. By tightening the threaded ring 9, the resonator body 1 to be tested can be fixed to prevent displacement or loosening during the test process.

[0026] The inner surface of the tuning ring 402 is provided with a plurality of equally spaced limiting protrusions, which abut against the electrode pin 2. Specifically, when the electrode pin 2 is inserted into the connection slot 401 and contacts the limiting protrusions, the limiting protrusions guide part of the electric field to the vicinity of the electrode, introducing the electric field of the tuning ring 402 body into the space around the electrode pin 2, and finely adjusting the electric field strength in this area by controlling the electric field distribution. The limiting protrusions not only conduct static electric fields, but also enable the local electric field of the electrode pin 2 to respond to the electrical signals of the control system. Through feedback monitoring by the control logic processing unit 8, the electric field conduction characteristics of the limiting protrusions can provide more sensitive data during frequency fine-tuning, helping the system to monitor and dynamically adjust the frequency and stress distribution of the resonator body 1 to be tested in real time. This can improve the regulation efficiency of the entire system and enable the resonator body 1 to be tested to quickly achieve a self-calibration effect. In addition, the multiple limiting protrusions on the inner surface of the tuning ring 402 are distributed in an equidistant manner, ensuring that the electrode pin 2 is always stably clamped around it, effectively preventing lateral deviation. This can prevent poor contact or signal distortion caused by deviation of the electrode pin 2, thereby ensuring the accuracy of the test signal.

[0027] The tuning ring 402 is made of a composite material, embedded with a layer of conductive material and provided with a thermosensitive layer on the outside. Specifically, the embedded conductive material forms an "active" control layer. During the adjustment of the tuning ring 402, the electromagnetic interaction between this layer and the surrounding electrodes generates a microscopic control force field, enhancing the electrostatic field effect between the electrodes and the resonator body 1 under test, thereby achieving the purpose of fine-tuning the vibration frequency. The thermosensitive layer on the outside of the tuning ring 402 can automatically adjust its resistance value according to changes in the ambient temperature, thereby compensating for changes in the resonant frequency. When the temperature rises, the resistance of the thermosensitive layer may increase, thereby suppressing the frequency increase caused by the temperature increase; when the temperature drops, the resistance decreases, maintaining the balance of the system frequency. This automatic compensation mechanism effectively offsets the impact of temperature fluctuations on the resonant system, allowing the resonator body 1 under test to maintain stable vibration characteristics under different temperature conditions, improving the system's adaptability in complex environments.

[0028] Embodiment 2: Based on embodiment 1, this embodiment proposes a specific working principle of a self-calibrating hemispherical resonator system for testing.

[0029] The specific implementation principle process is as follows: The resonator body 1 to be tested is placed within the control cavity 3, and all electrode pins 2 are inserted into the corresponding connection slots 401 of the multiple detection conductors 4. The rotating threaded ring 9 is adjusted to secure the resonator body 1 to ensure that it does not move during the test. Before the test begins, the control cavity 3, which holds the resonator body 1 to be tested, is sealed in a high vacuum container to form an angular velocity sensor. The signal offset detection unit 6 begins monitoring the electrical signal 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, the real-time monitored signal is compared with the standard parameters to determine the current frequency, phase, or amplitude offset. The control logic processing unit 8 determines the adjustment direction and movement amplitude of the tuning ring 402 based on the offset signal. The drive mechanism 7 receives instructions from the control logic processing unit 8 and adjusts the position of the tuning ring 402 to change the electric field strength and distribution around the electrode pins 2. Simultaneously, the signal offset detection unit 6 monitors the displacement of the tuning ring 402 in real time to ensure that it meets expectations. The control logic processing unit 8 compares the actual displacement with the target displacement value. If there is a deviation, the operation of the driving mechanism 7 is immediately corrected. The adaptive calibration algorithm module analyzes the data provided by the signal offset detection unit 6 to determine the calibration direction and adjustment amplitude. After each fine-tuning, the signal offset detection unit 6 collects the data of the tuning ring 402 position and the current resonant frequency again and compares them with the target displacement value. During the test, the thermal layer automatically adjusts its own resistance value according to the change in ambient temperature, thereby compensating for the frequency offset caused by temperature change. After multiple fine-tuning, the system confirms 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. Here's how it works: The up and down adjustment of the tuning ring 402 will change the distance between it and the electrode pin 2, and the change in distance will affect the electric field strength and distribution around the electrode. According to the basic principles of the electric field, the electric field strength is closely related to the distribution of charges, the relative position and the dielectric properties therebetween. Therefore, by adjusting the position of the tuning ring 402, fine-tuning of the electric field can be achieved. The change in capacitance between the tuning ring 402 and the electrode pin 2 will affect the electric field distribution. The fine-tuning of the capacitance will cause the migration speed of free electrons in the electric field to change, thereby affecting the electric field strength between the electrode pin 2 and the resonator body 1 to be measured. During the adjustment process, the system monitors the output signal of the electrode pin 2 in real time through the signal processing unit, and compares it with the standard parameters to detect signal offset.

[0030] The control logic processing unit 8 determines the adjustment direction and amplitude of the tuning ring 402 according to the signal offset detection result, and performs corresponding adjustments. The feedback mechanism ensures the accuracy and real-time performance of the adjustment process.

[0031] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A self-calibrating hemispherical resonator system for testing, comprising a resonator body (1) to be tested, a plurality of electrode pins (2) vertically downwardly arranged around the bottom of the resonator body (1) to be tested, the plurality of electrode pins (2) respectively corresponding to readout electrodes on a sensitive base, characterized in that: The invention comprises a control cavity (3) for fixing a resonator body (1) to be tested, the control cavity (3) being a cylindrical structure, the inner cavity of the control cavity (3) being surrounded by a plurality of detection conductors (4) respectively corresponding to a plurality of electrode pins (2), the upper end of the detection conductor (4) being provided with a connection groove (401) for inserting the electrode pins (2), the detection conductor (4) comprising an upper tuning ring (402) and a lower conductive part (403), the bottom of the conductive part (403) being connected to a signal processing unit via a wire (5), the bottom of the detection conductor (4) being provided with a driving mechanism (7) for controlling the lifting and lowering of the detection conductor (4), the driving mechanism (7) being connected to the signal processing unit.

2. The self-calibrating hemispherical resonator system for testing according to claim 1, characterized in that: The signal processing unit comprises a signal deviation detection unit (6) and a control logic processing unit (8), and the signal deviation detection unit (6) is connected to the wire (5).

3. The self-calibrating hemispherical resonator system for testing according to claim 2, characterized in that: The signal deviation detection unit (6) is connected to the control logic processing unit (8), the signal deviation detection unit (6) is used to detect the position change of the tuning ring (402), and the control logic processing unit (8) is used to control the control amount of the driving mechanism (7) according to the difference.

4. The self-calibrating hemispherical resonator system for testing according to claim 2, characterized in that: The control logic processing unit is also integrated with an adaptive calibration algorithm module for calculating the position of the tuning ring (402).

5. The self-calibrating hemispherical resonator system for testing according to claim 1, characterized in that: The signal processing unit is arranged at the bottom of the inner cavity of the regulating 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).

6. The self-calibrating hemispherical resonator system for testing according to claim 1, characterized in that: A guide ring (404) for defining the electrode pin (2) is provided at the upper end of the tuning ring (402) extending upward.

7. The self-calibrating hemispherical resonator system for testing according to claim 1, characterized in that: The inner diameter of the regulating cavity (3) is not less than the outer diameter of the lower end of the resonator body (1) to be measured, and the upper end of the regulating cavity (3) is provided with a locking mechanism for clamping the resonator body (1) to be measured.

8. The self-calibrating hemispherical resonator system for testing according to claim 7, characterized in that: The locking mechanism comprises a threaded ring (9) and a threaded groove adapted to the threaded ring (9); the threaded groove is arranged on the upper peripheral wall of the regulating cavity (3); and a plurality of vertical cutouts (301) are provided on the top of the regulating cavity (3).

9. The self-calibrating hemispherical resonator system for testing according to claim 1, characterized in that: The inner surface of the tuning ring (402) is provided with a plurality of equally spaced limiting protrusions, the limiting protrusions being in contact with the electrode pins (2).

10. The self-calibrating hemispherical resonator system for testing according to claim 9, characterized in that: The tuning ring (402) is made of a composite material, a layer of conductive material is embedded in the tuning ring (402), and a heat-sensitive layer is provided outside the tuning ring (402).

Images