Two-shaft signal follow-up rotary table
By adopting synchronous belt transmission and position closed-loop control algorithm in the signal following turntable, the problem of rotation delay is solved, the rotation accuracy and response speed are improved, and the accuracy and reliability of the measurement results are ensured.
Patent Information
- Application Number
- CN202421041810.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing signal follow-up rotary table has a rotation delay problem, which leads to the inability to follow the changes of the target or signal in time, reducing the real-timeness of the system and affecting the accuracy and reliability of the measurement results.
A two-axis signal follower turntable is designed, which uses synchronous belt transmission instead of traditional gear transmission to reduce the weight of the azimuth platform. It reads position information in real time through the pitch encoder and azimuth encoder, participates in the position closed-loop control algorithm, and calculates it separately. Pan and tilt transmission components.
By reducing the force required for rotation, the rotation accuracy and response speed are improved, ensuring the stability and accuracy of the turntable during rotation, reducing tracking errors, and improving the accuracy of measurement results.
Smart Images
Figure CN222380849U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of antenna turntables, in particular to a two-axis signal follow-up turntable. Background Art
[0002] The purpose of using the signal tracking turntable for tracking aircraft is mainly to achieve accurate tracking and pointing of aircraft signals. By real-time tracking of the aircraft, it is ensured that the signal receiving device is always aimed at the aircraft, reducing signal attenuation or loss caused by angle deviation, and improving the sensitivity and accuracy of signal reception. By accurately tracking aircraft signals, more and more accurate data can be collected, providing strong support for subsequent data processing and analysis, and improving data processing efficiency.
[0003] Existing signal-following turntables used to track aircraft may have rotation delay problems, which may cause the turntable to fail to respond to input commands or changes immediately. In applications that require real-time tracking and measurement, this delay will cause the turntable to be unable to follow the changes in the target or signal in a timely manner, thereby reducing the real-time performance of the system. The reduction in real-time performance will directly affect the accuracy and reliability of the measurement results, which will cause the turntable to be unable to accurately maintain the target position, resulting in tracking errors. The increase in tracking errors will directly affect the accuracy of the measurement results.
[0004] Therefore, it is necessary to invent a two-axis signal follow-up turntable to solve the above problems. Utility Model Content
[0005] In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide a two-axis signal follow-up turntable, which solves the problem of rotation delay that may exist in actual use. In applications that require real-time tracking and measurement, this delay will cause the turntable to be unable to follow the changes of the target or signal in time, thereby reducing the real-time performance of the system. This will cause the turntable to be unable to accurately maintain the target position, thereby generating tracking errors. The increase in tracking errors affects the accuracy of the measurement results.
[0006] In order to achieve the above objectives, the utility model adopts the following technical solutions:
[0007] A two-axis signal follow-up turntable comprises a receiving antenna and an azimuth platform, wherein a slip ring is installed at the center of the azimuth platform, an azimuth transmission component is sleeved on the top of the slip ring, a pitch bracket is detachably installed on the top of the azimuth transmission component, a threading hole is provided at the bottom of the pitch bracket at a position matching the slip ring, a pitch transmission component for controlling the vertical rotation of the receiving antenna is installed on one side wall of the pitch bracket, a pitch encoder is provided at the connection between one side of the pitch bracket and the receiving antenna, and the azimuth transmission component comprises an azimuth main pulley, and an azimuth encoder is provided on the top of the azimuth main pulley.
[0008] As a preferred solution of the utility model, a plurality of mounting blocks are provided on one side of the receiving antenna, the pitch transmission assembly includes a pitch main pulley, the pitch main pulley is installed on the inner side of the pitch bracket, a pitch motor whose output end is connected to the pitch main pulley is detachably installed on the outer side of the pitch bracket, the pitch main pulley is connected to the pitch slave pulley through a synchronous belt, the pitch slave pulley is detachably connected to the mounting block, and the pitch bracket is located on one side of the pitch main pulley and is provided with a pitch tensioner for tightening the synchronous belt.
[0009] As a preferred solution of the utility model, the pitch encoder is detachably mounted on the inner side of the pitch bracket, and the detection end of the pitch encoder extends to the inside of the mounting block.
[0010] As a preferred solution of the utility model, the azimuth master pulley is detachably mounted on the top of the azimuth platform, an azimuth motor with an output end extending to the inside of the azimuth master pulley is mounted on the bottom end of the azimuth platform, an azimuth slave pulley is sleeved on the top end of the slip ring, the azimuth slave pulley is connected to the azimuth master pulley through a synchronous belt, and an azimuth tensioner with an adjustable position for tightening the synchronous belt is also mounted on the top of the azimuth platform.
[0011] As a preferred solution of the utility model, the azimuth encoder is detachably mounted on the top of the azimuth platform, and the detection end of the azimuth encoder extends to the inner side of the azimuth main pulley.
[0012] As a preferred solution of the utility model, the inner side wall of the pitch bracket is provided with an adjustment hole for adjusting the position of the pitch tensioner, a limit block is installed on the end face of the pitch bracket, and an anti-collision silicone strip is installed on the opposite side of the pitch bracket located at the limit block.
[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:
[0014] In the utility model, the azimuth master pulley is fixed to the azimuth motor by a set screw, and the rotation of the azimuth slave pulley is driven by a synchronous belt, thereby realizing the rotation of the entire pitch platform. By using a synchronous belt to replace the gear for rotation, the azimuth slave pulley can be sleeved on the outside of the slip ring, and at the same time, through the threading holes and slip rings provided in the pitch bracket, various components located at the top of the azimuth platform, such as processors and power supplies, can be moved to the bottom surface of the azimuth platform, thereby reducing the deadweight of the follower turntable at the top of the azimuth platform. A high deadweight will affect the rotation speed of the turntable, causing a rotation delay, and affecting the stability and accuracy of the product. The reduced deadweight of the follow-up turntable and the transmission method of the synchronous belt can make the follow-up turntable have higher rotation accuracy and reduce the force required for rotation, thereby having a faster response speed, ensuring the stability and accuracy of the turntable during rotation. By extending the detection end of the pitch encoder to the inside of the mounting block, the pitch angle information can be obtained in a timely and accurate manner, and the pitch motor can be fed back, thereby reducing the difficulty of calculation, improving the calculation rate, and adjusting the receiving antenna in a timely and effective manner. The pitch encoder and azimuth encoder are set separately, and the azimuth encoder and pitch encoder can read the azimuth and pitch position information in real time. The azimuth and pitch position information participate in the position closed-loop control algorithm of the azimuth platform and the pitch platform, and the azimuth transmission component can be calculated separately from the pitch transmission component, reducing the difficulty of analyzing and coupling data during the calculation process, thereby improving the calculation rate and reducing rotation delay. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the overall main structure of the utility model;
[0017] Figure 3 It is a schematic diagram of the overall rear view structure of the utility model;
[0018] Figure 4 It is a schematic diagram of the local structure of the azimuth platform of the utility model.
[0019] Explanation of the accompanying drawings: 1. Receiving antenna; 2. Azimuth platform; 3. Pitch bracket; 4. Pitch encoder; 5. Pitch transmission assembly; 501. Pitch main pulley; 502. Pitch tensioner; 503. Pitch slave pulley; 6. Pitch motor; 7. Limit block; 8. Threading hole; 9. Slip ring; 10. Azimuth transmission assembly; 1001. Azimuth main pulley; 1002. Azimuth tensioner; 1003. Azimuth slave pulley; 11. Azimuth encoder; 12. Anti-collision silicone strip; 13. Azimuth motor; 14. Mounting block; 15. Adjustment hole. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.
[0021] The utility model provides Figure 1-4 The two-axis signal follow-up turntable shown in the figure comprises a receiving antenna 1 and an azimuth platform 2, a slip ring 9 is installed at the center of the azimuth platform 2, an azimuth transmission component 10 is sleeved on the top of the slip ring 9, a pitch bracket 3 is detachably installed on the top of the azimuth transmission component 10, a threading hole 8 is opened at the bottom of the pitch bracket 3 at a position adapted to the slip ring 9, a pitch transmission component 5 for controlling the vertical rotation of the receiving antenna 1 is installed on one side wall of the pitch bracket 3 A pitch encoder 4 is provided at the connection with the receiving antenna 1, and the azimuth transmission component 10 includes an azimuth main pulley 1001, and an azimuth encoder 11 is provided on the top of the azimuth main pulley 1001. A plurality of bearings are provided inside the slip ring 9 to bear the mass of the upper follower turntable. At the same time, the bottom surface of the azimuth slave pulley 1003 mounted on the slip ring 9 is higher than the top surface of the azimuth platform 2, ensuring that the azimuth slave pulley 1003 does not interfere with the azimuth platform 2 during rotation, thereby affecting the rotation accuracy of the follower turntable.
[0022] A plurality of mounting blocks 14 are provided on one side of the receiving antenna 1, the pitch transmission assembly 5 comprises a pitch main pulley 501, the pitch main pulley 501 is installed on the inner side of the pitch bracket 3, a pitch motor 6 whose output end is connected to the pitch main pulley 501 is detachably installed on the outer side of the pitch bracket 3, the pitch main pulley 501 is connected to a pitch slave pulley 503 via a synchronous belt, the pitch slave pulley 503 is detachably connected to the mounting block 14, a pitch tensioner 502 for tightening the synchronous belt is provided on one side of the pitch main pulley 501 of the pitch bracket 3, the side wall of the pitch bracket 3 can reduce its own weight while ensuring satisfactory performance by opening more holes, thereby reducing the force required to rotate the follower turntable, thereby achieving more precise and rapid rotation, and achieving real-time following of high-speed aircraft.
[0023] The pitch encoder 4 can be detachably mounted on the inner side of the pitch bracket 3, and the detection end of the pitch encoder 4 extends to the inside of the mounting block 14. The position of the pitch encoder 4 can accurately monitor the tilt angle of the receiving antenna 1 and the rotation angle of the pitch slave pulley 503, and accurate feedback and calibration reduce the difficulty of controller calculation, can control the pitch motor 6 to respond faster, and improve the following speed of the follow-up platform, thereby ensuring the strength of signal reception.
[0024] The azimuth master pulley 1001 is detachably mounted on the top of the azimuth platform 2, and an azimuth motor 13 with an output end extending to the inside of the azimuth master pulley 1001 is mounted on the bottom of the azimuth platform 2. An azimuth slave pulley 1003 is sleeved on the top of the slip ring 9, and the azimuth slave pulley 1003 is connected to the azimuth master pulley 1001 through a synchronous belt. An azimuth tensioner 1002 with an adjustable position for tightening the synchronous belt is also mounted on the top of the azimuth platform 2. A plurality of holes for adjusting the azimuth tensioner 1002 can be provided in the portion of the azimuth platform 2 between the azimuth slave pulley 1003 and the azimuth master pulley 1001, thereby ensuring the transmission accuracy during the synchronous belt transmission process, avoiding slippage of the pulley, improving the environmental adaptability of the synchronous pulley, and ensuring the accuracy of position control.
[0025] The azimuth encoder 11 can be detachably installed on the top of the azimuth platform 2. The detection end of the azimuth encoder 11 extends to the inner side of the azimuth main pulley 1001. The azimuth encoder 11 is used to detect the horizontal position and direction information. After the transmission ratio is converted by the controller, the azimuth motor 13 controls the azimuth from the pulley 1003 to move to the specified position to ensure the rotation rate of the follower platform.
[0026] The inner wall of the pitch bracket 3 is provided with an adjustment hole 15 for adjusting the position of the pitch tensioner 502. The end face of the pitch bracket 3 is installed with a limit block 7. The pitch bracket 3 is installed with an anti-collision silicone strip 12 on the opposite side of the limit block 7. The setting of the limit block 7 and the anti-collision silicone strip 12 can prevent the receiving antenna 1 from being hit during transportation or rotation, causing wear to the receiving antenna 1, thereby affecting the tracking accuracy.
[0027] In the utility model, the azimuth master pulley 1001 is fixed with the azimuth motor 13 by a set screw, and the rotation of the azimuth slave pulley 1003 is driven by a synchronous belt, thereby realizing the rotation of the entire pitch platform. By using a synchronous belt to replace the gear for rotation, the azimuth slave pulley 1003 can be sleeved on the outside of the slip ring 9. At the same time, through the threading hole 8 opened in the pitch bracket 3 and the setting of the slip ring 9, various components located at the top of the azimuth platform 2, such as a processor and a power supply, can be moved to the bottom surface of the azimuth platform 2, thereby reducing the deadweight of the follower turntable at the top of the azimuth platform 2. A high deadweight will affect the rotation speed of the turntable, causing a rotation delay, and affecting the stability and accuracy of the product. The reduced deadweight of the follower turntable and the transmission method of the synchronous belt can make the follower turntable have higher rotation accuracy and reduce the force required for rotation, thereby having a faster response speed, ensuring the stability and accuracy of the turntable during rotation. By extending the detection end of the pitch encoder 4 to the inside of the mounting block 14, the pitch angle information can be obtained in a timely and accurate manner, and the pitch motor 6 can be fed back, thereby reducing the difficulty of calculation, improving the calculation rate, and timely and effectively adjusting the receiving antenna 1. The pitch encoder 4 and azimuth encoder 11 are respectively set. The azimuth encoder 11 and the pitch encoder 4 can read the azimuth and pitch position information in real time. The azimuth and pitch position information participate in the position closed-loop control algorithm in the azimuth direction and the pitch direction. The azimuth transmission component 10 and the pitch transmission component 5 can be calculated separately, reducing the difficulty of analyzing and coupling data during the calculation process, thereby improving the calculation rate and reducing rotation delay.
[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A two-axis signal follow-up turntable, characterized in that: The invention comprises a receiving antenna (1) and an azimuth platform (2), wherein a slip ring (9) is installed at the center of the azimuth platform (2), an azimuth transmission assembly (10) is sleeved on the top of the slip ring (9), a pitch bracket (3) is detachably installed on the top of the azimuth transmission assembly (10), a threading hole (8) is provided at the bottom of the pitch bracket (3) at a position matching the slip ring (9), a pitch transmission assembly (5) for controlling the vertical rotation of the receiving antenna (1) is installed on one side wall of the pitch bracket (3), a pitch encoder (4) is arranged at the connection between one side of the pitch bracket (3) and the receiving antenna (1), and the azimuth transmission assembly (10) comprises an azimuth main pulley (1001), and an azimuth encoder (11) is arranged on the top of the azimuth main pulley (1001).
2. The two-axis signal follow-up turntable according to claim 1, characterized in that: A plurality of mounting blocks (14) are arranged on one side of the receiving antenna (1); the pitch transmission assembly (5) comprises a pitch main pulley (501); the pitch main pulley (501) is mounted on the inner side of the pitch bracket (3); a pitch motor (6) whose output end is connected to the pitch main pulley (501) is detachably mounted on the outer side of the pitch bracket (3); the pitch main pulley (501) is connected to a pitch slave pulley (503) via a synchronous belt; the pitch slave pulley (503) is detachably connected to the mounting block (14); and a pitch tensioner (502) for tightening the synchronous belt is arranged on one side of the pitch main pulley (501) of the pitch bracket (3).
3. The two-axis signal follow-up turntable according to claim 2, characterized in that: The pitch encoder (4) is detachably mounted on the inner side of the pitch bracket (3), and the detection end of the pitch encoder (4) extends to the inside of the mounting block (14).
4. The two-axis signal follow-up turntable according to claim 1, characterized in that: The azimuth master pulley (1001) is detachably mounted on the top of the azimuth platform (2); an azimuth motor (13) having an output end extending to the interior of the azimuth master pulley (1001) is mounted on the bottom of the azimuth platform (2); an azimuth slave pulley (1003) is sleeved on the top of the slip ring (9); the azimuth slave pulley (1003) is connected to the azimuth master pulley (1001) via a synchronous belt; and an azimuth tensioner (1002) whose position can be adjusted for tightening the synchronous belt is also mounted on the top of the azimuth platform (2).
5. The two-axis signal follow-up turntable according to claim 4, characterized in that: The azimuth encoder (11) is detachably mounted on the top of the azimuth platform (2), and the detection end of the azimuth encoder (11) extends to the inner side of the azimuth main pulley (1001).
6. The two-axis signal follow-up turntable according to claim 2, characterized in that: The inner side wall of the pitch bracket (3) is provided with an adjustment hole (15) for adjusting the position of the pitch tensioner (502); a limit block (7) is installed on the end face of the pitch bracket (3); and an anti-collision silicone strip (12) is installed on the side opposite to the limit block (7) of the pitch bracket (3).