Jitter driver for small-sized laser gyroscope

Abstract

The utility model relates to the technical field of laser gyroscopes, in particular to a small-sized laser gyroscope jitter driver, and aims to solve the problem that an output signal cannot be detected due to the fact that the frequency difference between two light beams is possibly zero when the rotating speed of a laser gyroscope is very low. The utility model relates to a small laser gyroscope jitter driver, which comprises a base; the shaking device is installed on the base, a containing groove is formed in the shaking device, and a supporting cylinder is arranged in the containing groove; the multiple supporting frames are arranged between the inner circumferential wall of the shaker and the supporting cylinder in a surrounding mode, and adjusting assemblies and piezoelectric ceramic pieces are arranged on the supporting frames; the shaker, the supporting frame and the supporting cylinder are used for supporting the laser gyroscope, and the adjusting assembly is used for adjusting the vibration efficiency of the laser gyroscope. The laser gyroscope is placed on the supporting frame, after the piezoelectric ceramic piece is started, vibration is transmitted to the adjusting assembly through the supporting frame, vibration is further generated, the laser gyroscope generates periodic vibration, and the frequency locking effect is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of laser gyroscopes, in particular to a small laser gyroscope jitter driver. Background Art

[0002] Laser gyroscopes, as high-precision inertial measurement devices, are widely used in aerospace, navigation, geological exploration, and other fields, performing high-precision angular velocity measurement. However, in practical applications, laser gyroscopes often face the problem of vibration affecting their performance. This is especially true when the drive components vibrate. This vibration not only affects the stability of the drive system itself but can also be transmitted through connecting components to the gyroscope's core measuring elements, causing measurement errors and thus affecting the system's accuracy and reliability.

[0003] Currently, laser gyroscope drive systems typically utilize symmetrical drive structures for vibration control. However, these designs struggle to completely eliminate vibrations generated by both the external environment and the internal drive source. Furthermore, existing vibration suppression measures often rely on electronic control systems or complex structural isolation designs, which increase system complexity and cost, and may also affect system stability and response speed. Therefore, minimizing vibration impacts through simple and efficient mechanical structure optimization remains a major technical challenge in laser gyroscope applications. Utility Model Content

[0004] The technical problem to be solved by the present invention is that when the rotation speed of the laser gyroscope is very low, the frequency difference between the two light beams may be zero, resulting in the output signal being undetectable. The purpose is to provide a small laser gyroscope jitter driver that can use the jitter driver to apply tiny periodic vibrations to the laser gyroscope, thereby avoiding the problem of frequency locking effect.

[0005] The utility model is achieved through the following technical solutions:

[0006] A small laser gyro dither driver, comprising:

[0007] base;

[0008] A shaker, the shaker being mounted on the base, the shaker being provided with a receiving groove, and the receiving groove being provided with a supporting tube;

[0009] A plurality of support frames, the plurality of support frames being disposed around and between the inner peripheral wall of the dither device and the support tube, and the support frames being provided with adjustment components and piezoelectric ceramic sheets;

[0010] The ditherer, the support frame and the support tube are used to support the laser gyroscope, and the adjustment component is used to adjust the vibration efficiency of the laser gyroscope.

[0011] In the above technical solution, the laser gyroscope is mounted and fixed on a support frame. When the laser gyroscope is working, the piezoelectric ceramic sheet is used to generate vibration, and the vibration is gradually transmitted to the adjustment component, which further generates vibration, thereby causing the laser gyroscope to generate periodic vibration and avoid the frequency locking effect.

[0012] In some optional technical solutions, the support frame is provided with a receiving groove along the thickness direction, and the piezoelectric ceramic piece is located in the receiving groove.

[0013] In the above technical solution, the piezoelectric ceramic piece located in the receiving groove can transmit the vibration to the support frame, and further transmit it to the adjustment component.

[0014] In some optional technical solutions, the adjustment component includes a support arm, which is located above the support frame. One end of the support arm in the length direction is connected to the outer peripheral wall of the support tube, and there is a gap between the other end of the support arm and the inner peripheral wall of the shaker.

[0015] In the above technical solution, one end of the support arm is fixed to the support tube, and the other end is free and unconstrained, which can gradually transmit the vibration to the free end, causing the laser gyroscope to generate periodic vibration.

[0016] In some optional technical solutions, a boss is provided at the top end of the support frame, and the support arm is connected to the outer peripheral wall of the support tube via the boss.

[0017] In the above technical solution, the boss is used to support the laser gyroscope and transmit vibration to the support arm.

[0018] In some optional technical solutions, a load-bearing seat is provided at one end of the support arm away from the support tube.

[0019] In the above technical solution, the load-bearing seat is used to place the laser gyroscope and can also resonate with the support arm.

[0020] In some optional technical solutions, the end portions of the load-bearing seat extend toward the adjacent load-bearing seat at both ends along the thickness direction of the support frame.

[0021] In the above technical solution, the area of ​​the load-bearing seat is relatively large, which can better support the laser gyroscope and generate periodic vibrations to the laser gyroscope.

[0022] In some optional technical solutions, a buffer spring is connected between the load-bearing seat and the support arm.

[0023] In the above technical solution, the buffer spring is used to transmit the vibration on the support arm to the load-bearing seat.

[0024] In some optional technical solutions, the load-bearing seat, the boss and the top surface of the support tube are all located at the same height.

[0025] In the above technical solution, the bearing seat, the boss and the supporting tube are all used to support the laser gyroscope.

[0026] In some optional technical solutions, there are gaps between the bottom surface of the load-bearing seat and the top surface of the support frame, between the bottom surface of the buffer spring and the top surface of the support frame, and between the bottom surface of the support arm and the top surface of the support frame.

[0027] In the above technical solution, there is a gap between the bottom surface of the load-bearing seat, the buffer spring and the support arm and the top surface of the support frame in order to provide space for up and down vibration during vibration.

[0028] In some optional technical solutions, an arc-shaped groove is provided downward on the top surface of the support tube.

[0029] In the above technical solution, the arc-shaped groove can better accommodate the laser gyroscope and keep the gyroscope stable.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] The piezoelectric ceramic piece can drive the support arm to vibrate through the support frame and the boss. The support arm gradually amplifies the amplitude at one end relative to the boss, and further transmits the vibration to the buffer spring and the load-bearing seat. The load-bearing seat and the buffer spring resonate, thereby causing the laser gyroscope fixed on the load-bearing seat to produce a slight angular change. Under periodic vibration, the laser gyroscope continuously changes the angular velocity detection range to avoid the frequency-locking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0033] Figure 1 It is a structural diagram of the utility model;

[0034] Figure 2 It is a cross-sectional view of the utility model;

[0035] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0036] Markings and corresponding parts names in the accompanying drawings:

[0037] 1. Ditherer; 11. Support frame; 111. Boss; 12. Support tube; 2. Piezoelectric ceramic piece; 3. Support arm; 4. Buffer spring; 5. Load-bearing seat. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the following examples and accompanying drawings. The exemplary embodiments and descriptions of the present invention are intended only to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the stage of actual development and use.

[0039] Example 1

[0040] like Figures 1 to 3 As shown, this embodiment provides a small laser gyro dither driver, comprising:

[0041] base;

[0042] The shaker 1 is mounted on a base, and a receiving groove is provided in the shaker 1, in which a supporting tube 12 is provided;

[0043] A plurality of support frames 11 are arranged around the inner wall of the dither device 1 and the support tube 12, and an adjustment component and a piezoelectric ceramic piece 2 are arranged on the support frames 11;

[0044] The ditherer 1, the support frame 11 and the support tube 12 are used to support the laser gyroscope, and the adjustment component is used to adjust the vibration efficiency of the laser gyroscope.

[0045] like Figure 2 As shown, the support frame 11 is provided with a receiving groove along the thickness direction, and the piezoelectric ceramic piece 2 is located in the receiving groove.

[0046] like Figures 1 to 3 As shown, the adjustment component includes a support arm 3, which is located above the support frame 11. One end of the support arm 3 in the length direction is connected to the outer wall of the support tube 12, and there is a gap between the other end of the support arm 3 and the inner wall of the ditherer 1.

[0047] like Figures 1 to 3 As shown, a boss 111 is provided at the top end of the support frame 11 , and the support arm 3 is connected to the outer peripheral wall of the support tube 12 via the boss 111 .

[0048] like Figures 1 to 3 As shown, a load-bearing seat 5 is provided at one end of the support arm 3 away from the support tube 12 .

[0049] like Figures 1 to 3 As shown, the ends of the load-bearing seat 5 extend toward the adjacent load-bearing seat 5 along both ends of the thickness direction of the support frame 11 .

[0050] like Figures 1 to 3 As shown, a buffer spring 4 is connected between the load-bearing seat 5 and the support arm 3 .

[0051] like Figures 1 to 3 As shown, the top surfaces of the load-bearing seat 5, the boss 111 and the support tube 12 are all located at the same height.

[0052] There are gaps between the bottom surface of the load-bearing seat 5 and the top surface of the support frame 11 , between the bottom surface of the buffer spring 4 and the top surface of the support frame 11 , and between the bottom surface of the support arm 3 and the top surface of the support frame 11 .

[0053] The top surface of the support tube 12 is provided with an arc-shaped groove downward.

[0054] Specifically, the laser gyroscope can be fixed on the support tube 12 and can be fixed by gluing. A groove is provided on the top of the support tube 12 to better support the laser gyroscope. Several support arms 3 and load-bearing seats 5 distributed around the array can also make the laser gyroscope more stably placed.

[0055] When the laser gyro is working, an alternating signal is input to the piezoelectric ceramic piece 2, thereby driving the gyro to rotate and shake. During this vibration process, the piezoelectric ceramic piece 2 is located in the support frame 11, and the upper end of the support frame 11 is fixedly connected to the boss 111. When the piezoelectric ceramic piece 2 is working, it will generate vibration and transmit it to the boss 111 through the support frame 11. The boss 111 further transmits the vibration signal to the support arm 3, causing the support arm 3 to deform. One end of the support arm 3 is fixed and constrained, and the other end is free and unconstrained, forming a cantilever beam structure. Therefore, when the support arm 3 is deformed, periodic vibration will further occur. Under periodic vibration, the laser gyro continuously changes the angular velocity detection range to avoid the frequency locking effect. The light beam inside the laser gyro obtains continuous and tiny relative motion under shaking, thereby maintaining an effective phase difference output.

[0056] Preferably, a buffer spring 4 is also connected to the support arm 3, and the other end of the buffer spring 4 is connected to the load-bearing seat 5. The support arm 3 transmits the vibration to the buffer spring 4, and the buffer spring 4 transmits the vibration to the load-bearing seat 5. As mentioned above, the support arm 3 is a cantilever beam structure, and the vibration effect is gradually amplified at one end of the buffer spring 4 to increase the amplitude. The vibration of the support arm 3 drives the buffer spring 4 and the load-bearing seat 5 to resonate, and the buffer spring 4 amplifies the driving signal to further increase the amplitude. The laser gyroscope is installed on the load-bearing seat 5, and produces a small angle change with the resonant vibration of the buffer spring 4 and the load-bearing seat 5.

[0057] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A small laser gyro jitter driver, characterized in that: include: base; A shaker (1), the shaker (1) being mounted on the base, the shaker (1) being provided with a receiving groove, the receiving groove being provided with a supporting tube (12); A plurality of support frames (11), wherein the plurality of support frames (11) are arranged around the inner peripheral wall of the vibrator (1) and the support tube (12), and an adjustment component and a piezoelectric ceramic sheet (2) are arranged on the support frames (11); The vibrator (1), the support frame (11) and the support cylinder (12) are used to support the laser gyroscope, and the adjustment component is used to adjust the vibration efficiency of the laser gyroscope.

2. The small laser gyro jitter driver according to claim 1, characterized in that: The support frame (11) is provided with a receiving groove along the thickness direction, and the piezoelectric ceramic piece (2) is located in the receiving groove.

3. The small laser gyro jitter driver according to claim 1, characterized in that: The adjustment assembly includes a support arm (3), the support arm (3) is located above the support frame (11), one end of the support arm (3) in the longitudinal direction is connected to the outer peripheral wall of the support tube (12), and a gap exists between the other end of the support arm (3) and the inner peripheral wall of the shaker (1).

4. The small laser gyro jitter driver according to claim 3, characterized in that: A boss (111) is provided at the top end of the support frame (11), and the support arm (3) is connected to the outer peripheral wall of the support cylinder (12) via the boss (111).

5. The small laser gyro jitter driver according to claim 4, characterized in that: A load-bearing seat (5) is provided at one end of the support arm (3) away from the support tube (12).

6. The small laser gyro jitter driver according to claim 5, characterized in that: The end portions of the load-bearing seat (5) extend toward the adjacent load-bearing seat (5) along both ends of the thickness direction of the support frame (11).

7. The small laser gyro jitter driver according to claim 5, characterized in that: A buffer spring (4) is connected between the load-bearing seat (5) and the support arm (3).

8. The small laser gyro jitter driver according to claim 5, characterized in that: The top surfaces of the load-bearing seat (5), the boss (111) and the support cylinder (12) are all located at the same height.

9. The small laser gyro jitter driver according to claim 7, characterized in that: There are gaps between the bottom surface of the load-bearing seat (5) and the top surface of the support frame (11), between the bottom surface of the buffer spring (4) and the top surface of the support frame (11), and between the bottom surface of the support arm (3) and the top surface of the support frame (11).

10. The small laser gyro jitter driver according to claim 1, characterized in that: The top surface of the support cylinder (12) is provided with an arc-shaped groove downward.

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