Aerodynamic torque adjustment ring and torque adjustment method for flexible gyroscope

Abstract

This invention pertains to flexible gyroscope adjustment technology, specifically a flexible gyroscope aerodynamic torque adjustment ring and a method for torque adjustment using this ring. The torque adjustment ring of this invention is a circular ring adhered to the center of the inner surface of the upper end cap of the flexible gyroscope. The ring has an inner diameter of Φ1 and an outer diameter of Φ2. One end face is the adhesive end face, and the angle α between the other end face and the adhesive end face is 0.4° + n*0.4°, where n = 0 to 5. This invention reduces drift caused by the dynamic torque of the gas, significantly improving the gyroscope's performance and long-term stability.

Description

Technical Field

[0001] This invention pertains to flexible gyroscope adjustment technology, specifically a flexible gyroscope aerodynamic torque adjustment ring and a method for torque adjustment using the torque adjustment ring. Background Technology

[0002] In flexible gyroscopes, the asymmetry in the gaps between rotating and stationary parts inevitably generates a dynamic gas torque that acts on the inertial rotor, causing the gyroscope to drift and affecting its performance and long-term stability. Summary of the Invention

[0003] The purpose of this invention is to propose a flexible gyroscope aerodynamic torque adjustment ring and a method for torque adjustment using the torque adjustment ring, so as to reduce drift caused by the action of gas dynamic torque and improve gyroscope performance and long-term stability.

[0004] The technical solution of this invention is: a flexible gyroscope aerodynamic torque adjustment ring, characterized in that it is a circular ring pasted to the center of the inner surface of the upper end cap of the flexible gyroscope. The inner diameter of the ring is Φ1, and the outer diameter is Φ2. One end face is the pasting end face, and the perpendicularity of this end face to the central axis of the ring is less than or equal to 0.02. The angle α between the other end face and the pasting end face is 0.4° + n*0.4°, where n = 0 to 5. The maximum thickness of the ring is L = 1.2 + n*0.1 mm, where Φ1 = 11 to 13 mm and Φ2 = 14 to 16 mm. There is a radial engraving line at the minimum thickness of the non-pasting surface of the ring. This engraving line is used as an alignment mark during pasting and replacement.

[0005] The method for adjusting the aerodynamic torque of a flexible gyroscope using the torque adjustment ring as described above is characterized by the following adjustment steps:

[0006] 1. Gyroscope Pressure Sensitivity Test: Using a standard testing apparatus, conduct a pressure sensitivity test on the assembled flexible gyroscope and plot the pressure sensitivity curve. If the absolute values ​​of the differences Δωx and Δωy between the values ​​of ωx and ωy at 100 mmHgHe and at 40 mmHgHe are both less than or equal to C, where C = 0.1° / h, it indicates that the gyroscope is not sensitive to pressure and no adjustment is required. ωx represents the drift of the angular velocity output value of the flexible gyroscope in the X-axis direction due to changes in pressure, and ωy represents the drift of the angular velocity output value of the flexible gyroscope in the Y-axis direction due to changes in pressure. Otherwise, adjust according to the following steps:

[0007] 2. Attach the torque adjustment ring; attach the torque adjustment ring to the inner surface of the upper end cap of the flexible gyroscope according to one of the following different situations:

[0008] 2.1 When the absolute value of Δωx is less than or equal to C and Δωy is greater than C, attach the point with the maximum thickness of the torque adjustment ring to the positive Y-axis direction of the gyroscope end cap;

[0009] 2.2 When the absolute value of Δωx is ≤ C and Δωy is < -C, attach the maximum thickness point of the torque adjustment ring to the negative Y-axis direction of the gyroscope end cap;

[0010] 2.3 When Δωx > C and the absolute value of Δωy < C, attach the maximum thickness point of the torque adjustment ring to the negative X-axis direction of the gyroscope end cap;

[0011] 2.4 When Δωx>C and Δωy>C, attach the maximum thickness point of the torque adjustment ring to the second quadrant between the negative X-axis and positive Y-axis of the gyroscope end cap;

[0012] 2.5 When Δωx>C and Δωy<-C, attach the maximum thickness point of the torque adjustment ring to the third quadrant between the negative X-axis and negative Y-axis directions of the gyroscope end cap;

[0013] 2.6 When Δωx < -C and the absolute value of Δωy < C, attach the maximum thickness point of the torque adjustment ring to the positive X-axis direction of the gyroscope end cap;

[0014] 2.7 When Δωx < -C and Δωy > C, attach the maximum thickness point of the torque adjustment ring to the first quadrant between the positive X-axis and positive Y-axis directions of the gyroscope end cap;

[0015] 2.8 When Δωx < -C and Δωy < -C, attach the maximum thickness point of the torque adjustment ring to the fourth quadrant between the positive X-axis direction and the negative Y-axis direction of the gyroscope end cap;

[0016] 3. If the absolute values ​​of the differences between ωx and ωy at 100 mmHg He and at 40 mmHg He, Δωx and Δωy, are both less than or equal to C, then the adjustment is complete; otherwise, adjust according to the following steps:

[0017] 3.1 For steps 2.1 to 2.3 and 2.6, check whether the signs of Δωx or Δωy before and after pasting the torque adjustment ring are the same or opposite. If they are the same, replace the pasted torque adjustment ring with a torque adjustment ring with a larger α value, and paste it in the same position as the replaced torque adjustment ring. If they are opposite, replace it with a torque adjustment ring with a smaller α value. Repeat the gyroscope pressure sensitivity test until the requirements are met.

[0018] 3.2. For steps 2.4–2.5 and 2.7–2.8, there are two possible scenarios:

[0019] 3.2.1 If either the absolute value of Δωx or Δωy already meets the requirement, then adjust according to the method described in step 3.1;

[0020] 3.2.2 If the absolute values ​​of Δωx and Δωy do not meet the requirements, rotate the upper cover by an angle, ensuring that the maximum thickness point of the torque adjustment ring remains within the original quadrant, and repeat the gyro pressure sensitivity test. Plot the pressure sensitivity curve. If either the absolute value of Δωx or Δωy meets the requirements, adjust according to the method described in step 3.1. If the absolute values ​​of Δωx and Δωy still do not meet the requirements, rotate the upper cover by an angle again and repeat the gyro pressure sensitivity test, plotting the pressure sensitivity curve until both Δωx and Δωy meet the requirements. If Δωx and Δωy do not meet the requirements in the entire quadrant, replace the already pasted torque adjustment ring with a torque adjustment ring with a larger α value, and then adjust according to the above steps until both Δωx and Δωy meet the requirements.

[0021] The advantages of this invention are: it reduces the drift caused by the dynamic torque of the gas acting on the gyroscope rotor, greatly improving the gyroscope's performance and long-term stability. Before this invention, the pass rate of a certain model of gyroscope was only 30%; after using this invention, the pass rate increased to over 80%. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the torque adjustment ring of the present invention. Detailed Implementation

[0023] The present invention will now be described in further detail. See below. Figure 1 The present invention relates to a flexible gyroscope aerodynamic torque adjustment ring, characterized in that it is a circular ring adhered to the center of the inner surface of the upper end cap of the flexible gyroscope. The ring has an inner diameter of Φ1 and an outer diameter of Φ2. One end face is the adhesive end face, and the perpendicularity of this end face to the central axis of the ring is less than or equal to 0.02. The angle α between the other end face and the adhesive end face is 0.4° + n*0.4°, where n = 0 to 5. The maximum thickness of the ring is L = 1.2 + n*0.1 mm, where Φ1 = 11 to 13 mm and Φ2 = 14 to 16 mm. A radial engraving line is located at the minimum thickness on the non-adhesive surface of the ring. This engraving line serves as an alignment mark during adhesion and replacement.

[0024] The method for adjusting the aerodynamic torque of a flexible gyroscope using the torque adjustment ring as described above is characterized by the following adjustment steps:

[0025] 1. Gyroscope Pressure Sensitivity Test: Using a standard testing apparatus, conduct a pressure sensitivity test on the assembled flexible gyroscope and plot the pressure sensitivity curve. If the absolute values ​​of the differences Δωx and Δωy between the values ​​of ωx and ωy at 100 mmHgHe and at 40 mmHgHe are both less than or equal to C, where C = 0.1° / h, it indicates that the gyroscope is not sensitive to pressure and no adjustment is required. ωx represents the drift of the angular velocity output value of the flexible gyroscope in the X-axis direction due to changes in pressure, and ωy represents the drift of the angular velocity output value of the flexible gyroscope in the Y-axis direction due to changes in pressure. Otherwise, adjust according to the following steps:

[0026] 2. Attach the torque adjustment ring; attach the torque adjustment ring to the inner surface of the upper end cap of the flexible gyroscope according to one of the following different situations:

[0027] 2.1 When the absolute value of Δωx is less than or equal to C and Δωy is greater than C, attach the point with the maximum thickness of the torque adjustment ring to the positive Y-axis direction of the gyroscope end cap;

[0028] 2.2 When the absolute value of Δωx is ≤ C and Δωy is < -C, attach the maximum thickness point of the torque adjustment ring to the negative Y-axis direction of the gyroscope end cap;

[0029] 2.3 When Δωx > C and the absolute value of Δωy < C, attach the maximum thickness point of the torque adjustment ring to the negative X-axis direction of the gyroscope end cap;

[0030] 2.4 When Δωx>C and Δωy>C, attach the maximum thickness point of the torque adjustment ring to the second quadrant between the negative X-axis and positive Y-axis of the gyroscope end cap;

[0031] 2.5 When Δωx>C and Δωy<-C, attach the maximum thickness point of the torque adjustment ring to the third quadrant between the negative X-axis and negative Y-axis directions of the gyroscope end cap;

[0032] 2.6 When Δωx < -C and the absolute value of Δωy < C, attach the maximum thickness point of the torque adjustment ring to the positive X-axis direction of the gyroscope end cap;

[0033] 2.7 When Δωx < -C and Δωy > C, attach the maximum thickness point of the torque adjustment ring to the first quadrant between the positive X-axis and positive Y-axis directions of the gyroscope end cap;

[0034] 2.8 When Δωx < -C and Δωy < -C, attach the maximum thickness point of the torque adjustment ring to the fourth quadrant between the positive X-axis direction and the negative Y-axis direction of the gyroscope end cap;

[0035] 3. If the absolute values ​​of the differences between ωx and ωy at 100 mmHg He and at 40 mmHg He, Δωx and Δωy, are both less than or equal to C, then the adjustment is complete; otherwise, adjust according to the following steps:

[0036] 3.1 For steps 2.1 to 2.3 and 2.6, check whether the signs of Δωx or Δωy before and after pasting the torque adjustment ring are the same or opposite. If they are the same, replace the pasted torque adjustment ring with a torque adjustment ring with a larger α value, and paste it in the same position as the replaced torque adjustment ring. If they are opposite, replace it with a torque adjustment ring with a smaller α value. Repeat the gyroscope pressure sensitivity test until the requirements are met.

[0037] 3.2. For steps 2.4–2.5 and 2.7–2.8, there are two possible scenarios:

[0038] 3.2.1 If either the absolute value of Δωx or Δωy already meets the requirement, then adjust according to the method described in step 3.1;

[0039] 3.2.2 If the absolute values ​​of Δωx and Δωy do not meet the requirements, rotate the upper cover by an angle, ensuring that the maximum thickness point of the torque adjustment ring remains within the original quadrant, and repeat the gyro pressure sensitivity test. Plot the pressure sensitivity curve. If either the absolute value of Δωx or Δωy meets the requirements, adjust according to the method described in step 3.1. If the absolute values ​​of Δωx and Δωy still do not meet the requirements, rotate the upper cover by an angle again and repeat the gyro pressure sensitivity test, plotting the pressure sensitivity curve until both Δωx and Δωy meet the requirements. If Δωx and Δωy do not meet the requirements in the entire quadrant, replace the already pasted torque adjustment ring with a torque adjustment ring with a larger α value, and then adjust according to the above steps until both Δωx and Δωy meet the requirements.

[0040] Example

[0041] Example 1: For gyroscope #06695, without the torque ring attached, Δωx = -0.0095° / h and Δωy = -0.1741° / h. Select and attach an adjustment ring with Φ1 = 12.5mm, Φ2 = 14.5mm, L = 1.50mm, and a height difference of 0.30mm between the ring's highest and lowest points. Attach the maximum thickness point of the torque adjustment ring to the negative Y-axis direction of the gyroscope's end cap and repeat the gyroscope's pressure sensitivity test. This time, Δωx = -0.0901° / h and Δωy = -0.0829° / h, satisfying the requirement that both absolute values ​​are less than or equal to C = 0.1° / h. The adjustment is now complete.

[0042] Example 2: For gyroscope #06693, without the torque ring attached, Δωx = -0.3645° / h and Δωy = -0.3050° / h. Select an adjustment ring with Φ1 of 12.5mm, Φ2 of 14.5mm, L of 2.50mm, and a height difference of 0.45mm between the ring's highest and lowest points. Attach the maximum thickness point of the torque adjustment ring to the fourth quadrant of the gyroscope end cap, approximately 330° from the positive X-axis to the negative Y-axis (with the positive X-axis as zero degrees, measured counter-clockwise). Re-perform the gyroscope's pressure sensitivity test. At this point, Δωx = 0.0325° / h and Δωy = -0.0572° / h, satisfying the requirement that both absolute values ​​are less than or equal to 0.1° / h. The adjustment is now complete.

[0043] Example 3: For gyroscope #06687, without the torque adjustment ring, Δωx = -0.1076° / h and Δωy = -0.1680° / h. Select an adjustment ring with Φ1 of 12.5mm, Φ2 of 14.5mm, L of 1.50mm, and a height difference of 0.30mm between the ring's highest and lowest points. Place the maximum thickness point of the torque adjustment ring on the fourth quadrant of the gyroscope's end cap, approximately 320° from the positive X-axis to the negative Y-axis. Re-perform the gyroscope's pressure sensitivity test; now, Δωx = 0.0303° / h and Δωy = 0.3097° / h. Therefore, the adjustment ring was replaced with one having Φ1 of 12.5mm, Φ2 of 14.5mm, L of 1.0mm, and a height difference of 0.17mm between the high and low points of the ring. Then, the gyroscope pressure sensitivity test was performed again. At this time, Δωx = 0.0467° / h and Δωy = 0.0302° / h, which met the requirement that the absolute values ​​were both less than or equal to 0.1° / h, and the adjustment was completed.

Claims

1. A flexible gyroscope aerodynamic torque adjustment ring, characterized in that, It is a ring pasted to the center of the inner surface of the top cap of a flexible gyroscope. The inner diameter of the ring is Ф1 and the outer diameter is Ф2. One end face is the pasting end face, and the perpendicularity of this end face to the central axis of the ring is less than or equal to 0.

02. The angle α between the other end face and the pasting end face is 0.4° + n*0.4°, where n = 0 to 5. The maximum thickness of the ring is L = 1.2 + n*0.1, in mm, where Ф1 = 11 to 13 mm and Ф2 = 14 to 16 mm. There is a radial engraving line at the minimum thickness of the non-pasting surface of the ring.

2. A method for adjusting the aerodynamic torque of a flexible gyroscope using the torque adjustment ring as described in claim 1, characterized in that the adjustment steps are as follows: 2.1 Gyroscope Pressure Sensitivity Test: A pressure sensitivity test was conducted on the assembled flexible gyroscope using a conventional testing apparatus. The pressure sensitivity curve was plotted. If ωx and ωy are within 100 mmHg... He The value is at 40 mmHg He If the absolute values ​​of the differences Δωx and Δωy are both less than or equal to C, where C = 0.1° / h, it indicates that the gyroscope is not sensitive to air pressure and no adjustment is needed. ωx is the drift of the gyroscope's angular velocity output value in the X-axis direction caused by changes in air pressure, and ωy is the drift of the gyroscope's angular velocity output value in the Y-axis direction caused by changes in air pressure. Otherwise, adjust according to the following steps: 2.2 Attaching the torque adjustment ring; Attach the torque adjustment ring to the inner surface of the upper end cap of the flexible gyroscope according to one of the following different situations: 2.2.1 When the absolute value of Δωx is less than or equal to C and Δωy is greater than C, attach the point with the maximum thickness of the torque adjustment ring to the positive Y-axis direction of the gyroscope end cap; 2.2.2 When the absolute value of Δωx is ≤ C and Δωy is < -C, attach the maximum thickness point of the torque adjustment ring to the negative Y-axis direction of the gyroscope end cap; 2.2.3 When Δωx > C and the absolute value of Δωy < C, attach the maximum thickness point of the torque adjustment ring to the negative X-axis direction of the gyroscope end cap; 2.2.4 When Δωx>C and Δωy>C, attach the maximum thickness point of the torque adjustment ring to the second quadrant between the negative X-axis and positive Y-axis of the gyroscope end cap; 2.2.5 When Δωx>C and Δωy<-C, attach the maximum thickness point of the torque adjustment ring to the third quadrant between the negative X-axis and negative Y-axis directions of the gyroscope end cap; 2.2.6 When Δωx < -C and the absolute value of Δωy < C, attach the maximum thickness point of the torque adjustment ring to the positive X-axis direction of the gyroscope end cap; 2.2.7 When Δωx < -C and Δωy > C, attach the maximum thickness point of the torque adjustment ring to the first quadrant between the positive X-axis and positive Y-axis directions of the gyroscope end cap; 2.2.8 When Δωx < -C and Δωy < -C, attach the maximum thickness point of the torque adjustment ring to the fourth quadrant between the positive X-axis direction and the negative Y-axis direction of the gyroscope end cap; 2.

3. If the absolute values ​​of the differences Δωx and Δωy between the values ​​of ωx and ωy at 100 mmHg He and at 40 mmHg He are both less than or equal to C, then the adjustment is complete; otherwise, adjust according to the following steps: 2.3.1 For steps 2.2.1 to 2.2.3 and 2.2.6, check whether the signs of Δωx or Δωy before and after pasting the torque adjustment ring are the same or opposite. If they are the same, replace the pasted torque adjustment ring with a torque adjustment ring with a larger α value, and paste it in the same position as the replaced torque adjustment ring. If they are opposite, replace it with a torque adjustment ring with a smaller α value. Repeat the gyroscope pressure sensitivity test until the requirements are met. 2.3.2 For steps 2.2.4 to 2.2.5 and 2.2.7 to 2.2.8, there are two possible scenarios: 2.3.2.1 If either the absolute value of Δωx or Δωy already meets the requirement, then adjust according to the method described in step 2.3.1; 2.3.2.2 If the absolute values ​​of Δωx and Δωy do not meet the requirements, rotate the upper cover by an angle, ensuring that the maximum thickness point of the torque adjustment ring remains within the original quadrant, and repeat the gyro pressure sensitivity test. Plot the pressure sensitivity curve. If either the absolute value of Δωx or Δωy meets the requirements, adjust according to the method described in step 2.3.

1. If the absolute values ​​of Δωx and Δωy still do not meet the requirements, rotate the upper cover by an angle again and repeat the gyro pressure sensitivity test, plotting the pressure sensitivity curve until both Δωx and Δωy meet the requirements. If neither Δωx nor Δωy meets the requirements in the entire quadrant, replace the already pasted torque adjustment ring with a torque adjustment ring with a larger α value, and then adjust according to the above steps until both Δωx and Δωy meet the requirements.

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