Frequency stabilizing device and method for laser gyroscope

Abstract

The invention relates to the field of laser gyroscopes, in particular to a frequency stabilization device and method for a laser gyroscope, and the frequency stabilization device is applied to the laser gyroscope. The chuck is a metal chuck, and the chuck is connected to the slotted vane; the screw rod penetrates through the chuck and is connected to the slotted vane; the piezoelectric ceramic assembly is connected to the upper surface and the lower surface of the chuck, the piezoelectric ceramic assembly comprises piezoelectric ceramic, the piezoelectric ceramic is conducted with the chuck, the piezoelectric ceramic is provided with a plurality of piezoelectric units, the piezoelectric effect of the piezoelectric units is gradually increased in the first direction, and the piezoelectric effect of the piezoelectric units is gradually increased in the second direction; and the first direction refers to the direction from the center position of the chuck to the edge position. The technical problem that the frequency stabilization performance of the laser gyroscope is poor is solved, and the technical effect of improving the frequency stabilization performance of the laser gyroscope is achieved.

Description

Technical Field

[0001] The present application relates to the field of laser gyroscopes, and in particular to a frequency stabilization device and method for a laser gyroscope. Background Art

[0002] In the in-depth study of laser gyro technology, high-precision measurement of the angular velocity of the carrier plays a vital role in the stable operation of modern navigation and control systems. As an advanced angular velocity measurement device, the working principle of the laser gyro is deeply rooted in the Sagnac effect. In short, it uses the resonant frequency difference between the two-way traveling waves in the ring traveling wave laser oscillator to accurately calculate the angular velocity of the carrier. In this process, the stability of the scale factor of the laser gyro becomes a key indicator to measure its measurement accuracy. And this scale factor is closely dependent on the three core parameters of the loop area, the laser wavelength and the optical cavity length of the resonant cavity. In theory, the loop area and the laser wavelength are constant for a certain laser, so the stability of the scale factor should be mainly subject to the stability of the optical cavity length of the resonant cavity. But in actual application scenarios, we have to face a thorny problem: the gyro cavity and its internal medium will expand and contract due to changes in ambient temperature, and mechanical vibration will also affect it. These factors together lead to the continuous change of the optical cavity length of the resonant cavity. This change will cause the longitudinal mode frequency of the laser gyro to drift during operation, which will have a direct impact on the measurement accuracy. In order to overcome this problem, scientific and technological personnel have taken a variety of measures to maintain the stable operation of the laser gyro. Among them, the use of frequency stabilization devices is particularly important. The main function of the frequency stabilization device is to ensure that the laser gyro can work stably on the same longitudinal mode at various ambient temperatures by finely adjusting the laser cavity length, thereby maintaining its measurement accuracy and reliability.

[0003] In the existing laser gyro frequency stabilization technology, piezoelectric elements are widely used. Its working principle is to drive the reflector of the annular cavity through the piezoelectric element, and accurately adjust the position of the reflector to compensate for the change of cavity length caused by the change of ambient temperature, and finally achieve the purpose of stabilizing the longitudinal mode frequency. However, the challenges in practical applications are much more complicated than the theoretical description. The working environment temperature span of the laser gyro is very large, usually covering a wide range from minus 40 degrees Celsius to plus 70 degrees Celsius. At the same time, it is also affected by the thermal expansion of many external components. Under the combined effect of these complex factors, the longitudinal mode drift caused by the free expansion of the laser gyro often exceeds the maximum compensation capacity of the frequency stabilization mechanism. When the frequency stabilization mechanism reaches the limit of its mechanical adjustment and the laser gyro still needs to continue to work normally, an undesirable phenomenon will occur-"mode hopping". Once "mode hopping" occurs, the output of the laser gyro will produce a large error, which will be quickly transmitted to the entire navigation system, causing significant deviations in the system. In extreme cases, this deviation may lead to unpredictable consequences and pose a serious threat to the overall performance and safety of the navigation system.

[0004] In order to avoid this series of negative effects, scientists have explored two main solutions. First, they tried to use materials with low expansion coefficients to manufacture key components of the laser gyroscope, in order to reduce the longitudinal mode drift of the laser gyroscope itself in the entire temperature range. This method is theoretically feasible, but in practical applications, the selection of materials and processing technology face considerable challenges. Secondly, they tried to increase the adjustment range of the frequency stabilization device by optimizing its design. For example, by reducing the thickness of the bottom of the slot or increasing the driving stroke of the piezoelectric ceramic, the flexibility and adjustment ability of the frequency stabilization device can be improved. Although these methods have achieved certain results, the performance improvement of the frequency stabilization device is still limited when the ambient temperature changes greatly, and it is difficult to meet more stringent application requirements. Summary of the invention

[0005] The present application provides a laser gyro frequency stabilization device and method, which solves the technical problem of poor frequency stabilization performance of the laser gyro and achieves the technical effect of improving the frequency stabilization performance of the laser gyro.

[0006] On the one hand, the present application provides a frequency stabilization device for a laser gyroscope, which adopts the following technical solution:

[0007] A frequency stabilization device for a laser gyroscope, applied to the laser gyroscope, comprises: a slotted sheet; a chuck, the chuck is a metal chuck, the chuck is connected to the slotted sheet; a screw, the screw passes through the chuck and is connected to the slotted sheet; and a piezoelectric ceramic component, the piezoelectric ceramic component is connected to the upper and lower surfaces of the chuck, the piezoelectric ceramic component comprises: a piezoelectric ceramic, the piezoelectric ceramic is conductively connected to the chuck, the piezoelectric ceramic has a plurality of piezoelectric units, the piezoelectric effects of the plurality of piezoelectric units gradually increase along a first direction, the first direction being the direction from the center position to the edge position of the chuck.

[0008] Preferably, the plurality of piezoelectric units are independent of each other and connected to adjacent piezoelectric units.

[0009] Preferably, several of the piezoelectric units are integrally formed.

[0010] Preferably, the piezoelectric unit is mounted on the chuck, the piezoelectric unit is electrically connected to the chuck, and the piezoelectric ceramic assembly further comprises: an airbag, the airbag is pressurized, the airbag is located between the piezoelectric ceramic and the chuck, and the airbag is respectively connected to the piezoelectric ceramic and the chuck; an adjusting member, the adjusting member is connected to the airbag, and the adjusting member is used to inflate or deflating the airbag.

[0011] Preferably, the airbag has a plurality of airbag units, the airbag units are arranged along a first direction, and each of the airbag units is connected to the adjustment member, so that each of the airbag units is independently controlled by the adjustment member.

[0012] Preferably, the number of the airbag units is consistent with the number of the piezoelectric units, and the airbag units correspond to the piezoelectric units one by one.

[0013] Preferably, the number of the piezoelectric units is three.

[0014] In a second aspect, the present application provides a method for stabilizing the frequency of a laser gyroscope, which adopts the following technical solution:

[0015] A frequency stabilization method for a laser gyroscope is applied to a frequency stabilization device of a laser gyroscope, the frequency stabilization device comprising: a slot; a chuck, the chuck is a metal chuck, the chuck is connected to the slot; a screw, the screw passes through the chuck and is connected to the slot; and a piezoelectric ceramic component, the piezoelectric ceramic component is connected to the upper and lower surfaces of the chuck, the piezoelectric ceramic component comprises: a piezoelectric ceramic, the piezoelectric ceramic is conductive with the chuck, the piezoelectric ceramic has a plurality of piezoelectric units, the piezoelectric effect of the plurality of piezoelectric units gradually increases along a first direction, the first direction being the direction from the center position to the edge position of the chuck;

[0016] The frequency stabilization method comprises:

[0017] Connect the positive voltage Va to the lead welded on the upper surface of the upper piezoelectric ceramic;

[0018] Connecting a negative voltage -Vb to the lead welded on the lower surface of the lower piezoelectric ceramic;

[0019] Adjust the voltage value;

[0020] The frequency stability of the laser gyro is continuously monitored.

[0021] Preferably, the piezoelectric unit is clamped on the chuck, and the piezoelectric unit is conductively connected to the chuck. The piezoelectric ceramic assembly also includes: an airbag, which is pressurized, located between the piezoelectric ceramic and the chuck, and connected to the piezoelectric ceramic and the chuck respectively; an adjusting member, which is connected to the airbag, and is used to inflate or evacuate the airbag. The airbag has a plurality of airbag units, which are arranged along a first direction, and each of the airbag units is connected to the adjusting member, so that each of the airbag units is independently controlled by the adjusting member; the number of the airbag units is consistent with the number of the piezoelectric units, and the airbag units correspond to the piezoelectric units one by one; and further includes: when the temperature is higher than a preset value, the airbag corresponding to the piezoelectric unit with a higher piezoelectric effect is exhausted.

[0022] Preferably, the piezoelectric unit is clamped on the chuck, and the piezoelectric unit is conductively connected to the chuck. The piezoelectric ceramic assembly also includes: an airbag, which is pressurized, located between the piezoelectric ceramic and the chuck, and connected to the piezoelectric ceramic and the chuck respectively; an adjusting member, which is connected to the airbag, and is used to inflate or evacuate the airbag. The airbag has a plurality of airbag units, which are arranged along a first direction, and each of the airbag units is connected to the adjusting member, so that each of the airbag units is independently controlled by the adjusting member; the number of the airbag units is consistent with the number of the piezoelectric units, and the airbag units correspond to the piezoelectric units one by one; and further includes: when the temperature is lower than a preset value, the airbag corresponding to the piezoelectric unit with a lower piezoelectric effect is inflated.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The piezoelectric effect is closely related to temperature. The present application can automatically adjust the response capability of the piezoelectric unit when the temperature changes. In a low-temperature environment, the internal low-piezoelectric effect unit can maintain a smaller deformation to avoid over-adjustment; in a high-temperature environment, the external high-piezoelectric effect unit can respond quickly and provide a larger deformation to compensate for the frequency deviation caused by temperature. This temperature compensation mechanism enables the laser gyro frequency stabilization device to maintain a stable frequency output under different temperature conditions. It solves the technical problem of poor frequency stabilization performance of the laser gyro and achieves the technical effect of improving the frequency stabilization performance of the laser gyro.

[0025] 2. Improved stability: The piezoelectric effect distribution designed in this application can achieve a smoother frequency response over the entire temperature range. The internal low piezoelectric effect unit can provide stable support when the temperature changes, while the external high piezoelectric effect unit can be quickly adjusted as needed. This design reduces the impact of temperature fluctuations on device performance and improves stability.

[0026] 3. Enhanced response sensitivity: When the laser gyro frequency needs to be precisely adjusted, the external high-voltage electric effect unit can respond quickly and produce a large deformation, thereby achieving rapid adjustment of the resonant cavity length. This design makes the device have a higher response sensitivity and can meet the needs of high-precision measurement.

[0027] 4. Synergy of temperature compensation: The temperature compensation characteristics of the piezoelectric unit combined with the rapid response capability of the airbag can more effectively offset the impact of temperature changes on the laser gyro frequency. When the temperature changes, the piezoelectric unit first responds and absorbs part of the disturbance, while the airbag makes fine adjustments as needed to ensure the stability of the frequency. This synergy enables the device to maintain stable performance over a wider temperature range.

[0028] 5. Improve temperature adaptability: Through the combined action of the piezoelectric unit and the airbag, the device can achieve more precise frequency control under different temperature conditions. Even under extreme temperatures, the device can maintain a stable frequency output by adjusting the air volume of the airbag and the piezoelectric effect of the piezoelectric unit. This design improves the temperature adaptability of the device, enabling it to work reliably under various environmental conditions.

[0029] 6. Enhanced system robustness: The piezoelectric unit design combined with the airbag arrangement enhances the fault tolerance of the system. During temperature changes, if the piezoelectric unit performance degrades or fails, the airbag can still maintain the stability of the resonant cavity length by inflating and deflating. This redundant design improves the robustness and reliability of the entire frequency stabilization device, ensuring that the system can work properly under various conditions.

[0030] 7. Optimize control strategy: Combined with temperature factors, the control strategy can be further optimized. By real-time monitoring of temperature and adjusting the working state of the piezoelectric unit and the airbag, more precise frequency control can be achieved. When the temperature is high or low, the frequency and amplitude of the airbag's inflation and deflation can be increased to quickly respond and compensate for the frequency offset caused by temperature. This optimized control strategy can further improve the frequency stability and response sensitivity of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a first schematic diagram of the frequency stabilization device of the laser gyroscope described in the present application;

[0032] Figure 2 This is a second schematic diagram of the frequency stabilization device of the laser gyroscope described in the present application;

[0033] Figure 3 is a schematic diagram of a piezoelectric ceramic component of the frequency stabilization device described in the present application;

[0034] Figure 4 This is a first flow chart of the frequency stabilization method described in this application;

[0035] Figure 5 This is the second flow chart of the frequency stabilization method described in this application.

[0036] Explanation of the reference numerals: 100, slot; 200, chuck; 210, bracket; 300, screw; 400, piezoelectric ceramic assembly; 410, piezoelectric ceramic; 411, piezoelectric unit; 420, airbag; 421, airbag unit. DETAILED DESCRIPTION

[0037] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of this application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0038] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] The embodiments of the present application provide a laser gyro frequency stabilization device and method, which solve the technical problem of poor frequency stabilization performance of the laser gyro and achieve the technical effect of improving the frequency stabilization performance of the laser gyro.

[0040] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0041] This embodiment provides a frequency stabilization device for a laser gyroscope, such as Figure 1-3 As shown, it is intended to improve the frequency stability of the laser gyro under different temperature conditions. The frequency stabilization device includes a slot 100, a metal chuck 200, a screw 300 and a piezoelectric ceramic assembly 400. The metal chuck 200 is connected to the slot 100, and the screw 300 passes through the chuck 200 and is connected to the slot 100, which plays a role of fixing and supporting. The piezoelectric ceramic assembly 400 is the core part of the device and is connected to the upper and lower surfaces of the chuck 200. The piezoelectric ceramic assembly 400 includes a piezoelectric ceramic 410, wherein the piezoelectric ceramic 410 is composed of a plurality of piezoelectric units 411, and the piezoelectric effect of these piezoelectric units 411 gradually increases along the first direction (i.e., the direction from the center position to the edge position of the chuck 200). This design allows the device to compensate for the influence of temperature changes on the frequency of the laser gyro by adjusting the response ability of the piezoelectric unit 411 at different temperatures. Furthermore, the piezoelectric unit 411 is connected to the chuck 200 to ensure the effective transmission of electrical energy.

[0042] In one embodiment, the plurality of piezoelectric units 411 are independent of each other and connected to adjacent piezoelectric units 411; in another embodiment, the plurality of piezoelectric units 411 are integrally formed. Specifically, in the present application, the number of piezoelectric units 411 is three, and the piezoelectric effects of the three piezoelectric units 411 gradually increase along the first direction.

[0043] Among them, Figure 1-3As shown, the piezoelectric ceramic 410 is clamped on the chuck 200 through the bracket 210, so that the piezoelectric ceramic 410 can be connected to the metal chuck 200. In other words, the piezoelectric ceramic 410 is clamped on the chuck 200 so that the piezoelectric ceramic 410 can always contact and conduct with the chuck 200.

[0044] like Figure 3 As shown, the piezoelectric ceramic assembly 400 also includes an airbag 420 and an adjustment member. The airbag 420 is pressurized and located between the piezoelectric ceramic 410 and the chuck 200, and is connected to the piezoelectric ceramic 410 and the chuck 200 respectively. The adjustment member is connected to the airbag 420, and is used to inflate or evacuate the airbag 420. This allows the piezoelectric unit 411 to be assisted in achieving a more precise frequency adjustment by adjusting the inflation and deflation state of the airbag 420. The airbag 420 is divided into a plurality of airbag units 421, which are arranged along a first direction, and each airbag unit 421 is connected to the adjustment member to achieve independent control. The number of airbag units 421 is consistent with the number of piezoelectric units 411, and corresponds one to one. This layout allows each piezoelectric unit 411 to be fine-tuned independently through the corresponding airbag unit 421, thereby achieving stable control of the frequency of the entire device. Among them, the adjustment member can be an air pump.

[0045] It is worth noting that in the present application, the design of the piezoelectric effect of the piezoelectric unit 411 being arranged from high to low from the outside to the inside is mainly based on the piezoelectric effect characteristics of the piezoelectric ceramic 410 at different temperatures and the working requirements of the laser gyro frequency stabilization device. The piezoelectric effect of the piezoelectric ceramic 410 is affected by temperature. As the temperature increases, the piezoelectric constant and strain of some piezoelectric ceramics 410 may increase, that is, the piezoelectric effect is enhanced; while at lower temperatures, the piezoelectric effect may weaken. In accordance with the working requirements of the frequency stabilization device, the frequency stabilization device of the laser gyro needs to maintain the stability of the laser frequency when the temperature changes. This requires that the piezoelectric ceramic 410 can accurately adjust the length of the laser gyro resonant cavity through the piezoelectric effect according to the change in temperature, thereby compensating for the frequency offset caused by the temperature change.

[0046] Outer layer high-voltage electric effect: The outer layer uses piezoelectric ceramics 410 with high-voltage electric effect, which can provide greater deformation capacity in high-temperature environments, thereby effectively compensating for changes in the length of the laser gyro resonant cavity caused by temperature increases and maintaining the stability of the laser frequency. Intermediate layer medium piezoelectric effect: The intermediate layer uses piezoelectric ceramics 410 with medium piezoelectric effect, which plays a transitional role. It can provide appropriate deformation within a medium temperature range to ensure good compensation effects over the entire temperature range. Inner layer low piezoelectric effect: The inner layer uses piezoelectric ceramics 410 with low piezoelectric effect, which can provide smaller deformation adjustments in low-temperature environments to fine-tune the length of the laser gyro resonant cavity and ensure the stability of the laser frequency.

[0047] Through the piezoelectric effect design arranged from high to low from outside to inside, the piezoelectric effect characteristics of the piezoelectric ceramic 410 at different temperatures can be fully utilized to achieve precise adjustment of the laser gyro resonant cavity length, thereby maintaining the stability of the laser frequency under different temperature conditions. This design reflects the full utilization of the performance of the piezoelectric ceramic 410 and the precise satisfaction of the working requirements of the laser gyro frequency stabilization device.

[0048] This embodiment also provides a method for stabilizing the frequency of a laser gyroscope. Figure 4 , 5 As shown, the method aims to improve the frequency stability of the laser gyro under different temperature conditions. The method ensures the frequency stability of the laser gyro under different temperature conditions by precisely controlling the states of the piezoelectric ceramic 410 and the air bag 420.

[0049] The positive voltage Va is connected to the lead welded on the upper surface of the upper piezoelectric ceramic 410, and the negative voltage -Vb is connected to the lead welded on the lower surface of the lower piezoelectric ceramic 410. By adjusting these two voltage values, the deformation degree of the piezoelectric ceramic 410 can be controlled, thereby adjusting the length of the laser gyro resonant cavity. This is a critical step because the change in the resonant cavity length will directly affect the frequency output of the laser gyro.

[0050] Temperature monitoring and response: Continuously monitor the ambient temperature. Changes in temperature will affect the piezoelectric effect of the piezoelectric ceramic 410, thereby affecting the frequency output of the laser gyro. Therefore, the system needs to be able to sense changes in ambient temperature in real time and adjust the working state of the piezoelectric ceramic 410 accordingly.

[0051] When the temperature detected is higher than the preset value, that is, in a high temperature environment, for example, the temperature is greater than 80°C, it means that the piezoelectric effect of the piezoelectric ceramic 410 may be too strong, resulting in too high a frequency of the laser gyro. At this time, the system will exhaust the airbag 420 corresponding to the piezoelectric unit 411 with a higher piezoelectric effect through the adjustment member. The exhaust operation will reduce the support force of the airbag 420 on the piezoelectric unit 411, thereby reducing the deformation of the piezoelectric unit 411 and keeping the frequency of the laser gyro stable.

[0052] On the contrary, when the system detects that the temperature is lower than the preset value, that is, in a low temperature environment, for example, the temperature is less than 20°C, it means that the piezoelectric effect of the piezoelectric ceramic 410 may be too weak, resulting in too low a frequency of the laser gyro. At this time, the system will inflate the airbag 420 corresponding to the piezoelectric unit 411 with a lower piezoelectric effect through the adjustment member. The inflation operation will increase the supporting force of the airbag 420 on the piezoelectric unit 411, thereby increasing the deformation of the piezoelectric unit 411 to compensate for the frequency deviation caused by the temperature drop.

[0053] During the entire frequency stabilization process, the system ensures the accuracy of control through precise algorithms and feedback mechanisms. By real-time monitoring of the frequency output of the laser gyro, the system can determine the current control effect and adjust the voltage value and the amount of gas charged and discharged by the airbag 420 as needed. This closed-loop control method enables the system to quickly respond to environmental changes and achieve stable output of the laser gyro frequency.

[0054] In addition, the system can also continuously optimize the frequency stabilization method based on historical data and experience. By analyzing the frequency response characteristics of the laser gyro under different temperature conditions, the system can adjust the control strategy of the voltage value and the inflation and deflation volume of the airbag 420 to further improve the frequency stabilization effect. This continuous optimization process will make the frequency stabilization device more adaptable to various complex environmental conditions and improve the performance and reliability of the laser gyro.

[0055] Therefore, the frequency stabilization method of the present application achieves the frequency stability of the laser gyroscope under different temperature conditions by precisely controlling the states of the piezoelectric ceramic 410 and the airbag 420, combined with real-time monitoring and closed-loop control. This frequency stabilization method not only improves the performance and reliability of the laser gyroscope, but also provides strong support for the application of the laser gyroscope in a wider range of fields.

[0056] Working principle / steps:

[0057] The frequency stabilization device of the laser gyro uses a combination of piezoelectric ceramics 410 and airbags 420 to cope with the effect of temperature changes on the frequency. The piezoelectric effect of the piezoelectric ceramics 410 changes with temperature, affecting its frequency stability. To maintain stability, the system monitors the temperature and adjusts the voltage of the piezoelectric ceramics 410 and the inflation and deflation of the airbags 420 accordingly. When the temperature is too high, the piezoelectric effect is reduced to avoid excessive frequency; when the temperature is too low, the piezoelectric effect is increased to compensate for the frequency drop.

[0058] Technical effects:

[0059] 1. The piezoelectric effect is closely related to temperature. The present application can automatically adjust the response capability of the piezoelectric unit 411 when the temperature changes. In a low-temperature environment, the internal low-piezoelectric effect unit can maintain a small deformation to avoid over-adjustment; in a high-temperature environment, the external high-piezoelectric effect unit can respond quickly and provide a larger deformation to compensate for the frequency deviation caused by temperature. This temperature compensation mechanism enables the laser gyro frequency stabilization device to maintain a stable frequency output under different temperature conditions. The technical problem of poor frequency stabilization performance of the laser gyro is solved, and the technical effect of improving the frequency stabilization performance of the laser gyro is achieved.

[0060] 2. Improved stability: The piezoelectric effect distribution designed in this application can achieve a smoother frequency response over the entire temperature range. The internal low piezoelectric effect unit can provide stable support when the temperature changes, while the external high piezoelectric effect unit can be quickly adjusted as needed. This design reduces the impact of temperature fluctuations on device performance and improves stability.

[0061] 3. Enhanced response sensitivity: When the laser gyro frequency needs to be precisely adjusted, the external high-voltage electric effect unit can respond quickly and produce a large deformation, thereby achieving rapid adjustment of the resonant cavity length. This design makes the device have a higher response sensitivity and can meet the needs of high-precision measurement.

[0062] 4. Synergy of temperature compensation: The temperature compensation characteristics of the piezoelectric unit 411 combined with the rapid response capability of the airbag 420 can more effectively offset the effect of temperature changes on the laser gyro frequency. When the temperature changes, the piezoelectric unit 411 first responds and absorbs part of the disturbance, while the airbag 420 makes fine adjustments as needed to ensure the stability of the frequency. This synergy enables the device to maintain stable performance over a wider temperature range.

[0063] 5. Improve temperature adaptability: Through the combined action of the piezoelectric unit 411 and the airbag 420, the device can achieve more accurate frequency control under different temperature conditions. Even under extreme temperatures, the device can maintain a stable frequency output by adjusting the amount of gas charged and discharged by the airbag 420 and the piezoelectric effect of the piezoelectric unit 411. This design improves the temperature adaptability of the device, enabling it to work reliably under various environmental conditions.

[0064] 6. Enhanced system robustness: The design of the piezoelectric unit 411 combined with the arrangement of the airbag 420 enhances the fault tolerance of the system. During the temperature change process, if the piezoelectric unit 411 has performance degradation or failure, the airbag 420 can still maintain the stability of the resonant cavity length by inflating and deflating. This redundant design improves the robustness and reliability of the entire frequency stabilization device, ensuring that the system can work normally under various conditions.

[0065] 7. Optimize control strategy: The control strategy can be further optimized by combining temperature factors. By real-time monitoring of temperature and adjusting the working state of the piezoelectric unit 411 and the airbag 420, more accurate frequency control can be achieved. When the temperature is high or low, the frequency and amplitude of the inflation and deflation of the airbag 420 can be increased to quickly respond and compensate for the frequency deviation caused by the temperature. This optimized control strategy can further improve the frequency stability and response sensitivity of the device.

[0066] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0067] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A frequency stabilizing device for a laser gyroscope, characterized in that: Applied to laser gyroscopes, including: Groove sheet (100); A chuck (200), wherein the chuck (200) is a metal chuck (200), and the chuck (200) is connected to the slot (100); a screw rod (300), the screw rod (300) passing through the chuck (200) and connected to the slot plate (100); and A piezoelectric ceramic component (400), the piezoelectric ceramic component (400) being connected to the upper and lower surfaces of the chuck (200), the piezoelectric ceramic component (400) comprising: A piezoelectric ceramic (410), wherein the piezoelectric ceramic (410) is electrically connected to the chuck (200), and the piezoelectric ceramic (410) has a plurality of piezoelectric units (411), and the piezoelectric effect of the plurality of piezoelectric units (411) gradually increases along a first direction, wherein the first direction refers to a direction from a center position to an edge position of the chuck (200).

2. The frequency stabilization device of a laser gyro according to claim 1, characterized in that: The plurality of piezoelectric units (411) are independent of each other and connected to adjacent piezoelectric units (411).

3. The frequency stabilization device of a laser gyro according to claim 1, characterized in that: A plurality of the piezoelectric units (411) are integrally formed.

4. The frequency stabilization device of a laser gyro according to claim 1, characterized in that: The piezoelectric unit (411) is clamped on the chuck (200), the piezoelectric unit (411) is electrically connected to the chuck (200), and the piezoelectric ceramic component (400) further comprises: An airbag (420), the airbag (420) is pressurized, the airbag (420) is located between the piezoelectric ceramic (410) and the chuck (200), and the airbag (420) is connected to the piezoelectric ceramic (410) and the chuck (200) respectively; An adjusting member, the adjusting member is connected to the airbag (420), and the adjusting member is used to inflate or deflate the airbag (420).

5. The frequency stabilization device of a laser gyro according to claim 4, characterized in that: The airbag (420) has a plurality of airbag units (421), the airbag units (421) are arranged along a first direction, and each of the airbag units (421) is connected to the adjustment member, so that each of the airbag units (421) is independently controlled by the adjustment member.

6. The frequency stabilizing device of a laser gyro according to claim 5, characterized in that: The number of the airbag units (421) is consistent with the number of the piezoelectric units (411), and the airbag units (421) correspond one to one to the piezoelectric units (411).

7. The frequency stabilizing device of a laser gyro according to claim 6, characterized in that: The number of the piezoelectric units (411) is three.

8. A method for stabilizing the frequency of a laser gyroscope, characterized in that: A frequency stabilizing device for use in a laser gyroscope, the frequency stabilizing device comprising: a slotted sheet (100); a chuck (200), the chuck (200) being a metal chuck (200), the chuck (200) being connected to the slotted sheet (100); a screw rod (300), the screw rod (300) passing through the chuck (200) and being connected to the slotted sheet (100); and a piezoelectric ceramic component (400), the piezoelectric ceramic component (400) ) are connected to the upper and lower surfaces of the chuck (200), the piezoelectric ceramic assembly (400) comprising: a piezoelectric ceramic (410), the piezoelectric ceramic (410) being electrically connected to the chuck (200), the piezoelectric ceramic (410) having a plurality of piezoelectric units (411), the piezoelectric effect of the plurality of piezoelectric units (411) gradually increasing along a first direction, the first direction being a direction from the center position to the edge position of the chuck (200); The frequency stabilization method comprises: Connect the positive voltage Va to the lead welded on the upper surface of the upper piezoelectric ceramic; Connecting a negative voltage -Vb to the lead welded on the lower surface of the lower piezoelectric ceramic; Adjust the voltage value; The frequency stability of the laser gyro is continuously monitored.

9. The method for stabilizing the frequency of a laser gyro according to claim 8, characterized in that: The piezoelectric unit (411) is clamped on the chuck (200), and the piezoelectric unit (411) is connected to the chuck (200). The piezoelectric ceramic component (400) further comprises: an airbag (420), the airbag (420) is pressurized, the airbag (420) is located between the piezoelectric ceramic (410) and the chuck (200), and the airbag (420) is respectively connected to the piezoelectric ceramic (410) and the chuck (200); an adjusting member, the adjusting member is connected to the airbag (420). The adjusting member is used to inflate or deflate the airbag (420), the airbag (420) has a plurality of airbag units (421), the airbag units (421) are arranged along a first direction, and each of the airbag units (421) is connected to the adjusting member, so that each of the airbag units (421) is independently controlled by the adjusting member; the number of the airbag units (421) is consistent with the number of the piezoelectric units (411), and the airbag units (421) correspond to the piezoelectric units (411) one by one; and further comprising: When the temperature is higher than a preset value, the airbag (420) corresponding to the piezoelectric unit (411) with a higher piezoelectric effect is exhausted.

10. The method for stabilizing the frequency of a laser gyro according to claim 8, characterized in that: The piezoelectric unit (411) is clamped on the chuck (200), and the piezoelectric unit (411) is connected to the chuck (200). The piezoelectric ceramic component (400) further comprises: an airbag (420), the airbag (420) is pressurized, the airbag (420) is located between the piezoelectric ceramic (410) and the chuck (200), and the airbag (420) is respectively connected to the piezoelectric ceramic (410) and the chuck (200); an adjusting member, the adjusting member is connected to the airbag (420). The adjusting member is used to inflate or deflate the airbag (420), the airbag (420) has a plurality of airbag units (421), the airbag units (421) are arranged along a first direction, and each of the airbag units (421) is connected to the adjusting member, so that each of the airbag units (421) is independently controlled by the adjusting member; the number of the airbag units (421) is consistent with the number of the piezoelectric units (411), and the airbag units (421) correspond to the piezoelectric units (411) one by one; and further comprising: When the temperature is lower than a preset value, the airbag (420) corresponding to the piezoelectric unit (411) with a lower piezoelectric effect is inflated.

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