Device for testing performance of high-power microwave large radiating antenna

Abstract

The invention provides a device for testing the performance of a high-power microwave large-scale radiating antenna, and the device comprises a test load assembly, a pitching support assembly, and a rotation assembly, the test load assembly is used for installing an antenna to be tested, the pitching support assembly is used for adjusting and measuring the pitching angle of the test load assembly, and the rotation assembly is used for rotating the antenna to be tested. The rotation assembly is used for adjusting and measuring the rotation angle of the pitching supporting assembly. The antenna to be tested is installed through the test load assembly, the pitching angle of the test load assembly is adjusted and measured through the pitching supporting assembly, the rotation angle of the pitching supporting assembly is adjusted and measured through the rotation assembly, and therefore adjustment and measurement of the pitching angle and the rotation angle of the antenna to be tested are achieved. According to the antenna performance test requirements, the pitching angle and the rotation angle of the antenna array plane can be controlled in a servo mode, and the servo control precision is better than 0.1 degree.

Description

Technical Field

[0001] The invention belongs to the technical field of test equipment, and more specifically, relates to a device for testing the performance of a high-power microwave large-scale radiating antenna. Background Art

[0002] As a high-power microwave radiation antenna array, the antenna is usually large in size and weight. After the large antenna array is machined, performance testing and analysis are required to ensure that the actual product can meet the radiation performance indicators. Usually, the radiation surface of this type of high-power microwave antenna is a large plane or arc surface, and the mounting brackets are located on both sides of the radiation surface on the same plane. In order to measure the radiation performance of the antenna, it is necessary to design a special mechanical test device. The test device has the function of pitching and rotating the antenna array, and constantly changes the spatial posture of the antenna array to test performance analysis. The motion accuracy requirements of the test device are: pitch accuracy and rotation accuracy are better than 0.1°. For this type of high-power microwave large radiation antenna, there is currently no universal high-precision test device at home and abroad that can adapt to the performance test of antenna arrays of different shapes and sizes. Summary of the invention

[0003] To solve the above problems, the technical solution adopted by the present invention is: to provide a device for performance testing of high-power microwave large radiating antennas, including a test load assembly, a pitch support assembly and a rotation assembly, the test load assembly is used to install the antenna to be tested, the pitch support assembly is used to adjust and measure the pitch angle of the test load assembly, and the rotation assembly is used to adjust and measure the rotation angle of the pitch support assembly.

[0004] Optionally, the test load assembly includes a load rack, a load mounting plate is provided on the load rack, the antenna to be tested is connected to the load mounting plate, and pitch axes are provided at both ends of the load rack.

[0005] Optionally, the pitch support assembly includes a pitch support frame, which is connected to the rotating assembly, and a first support column and a second support column are provided on the pitch support frame, and both ends of the pitch axis are rotatably connected to the first support column and the second support column respectively through bearings, a pitch drive mechanism is provided on the first support column, and the pitch drive mechanism is fixedly connected to one end of the pitch axis, and a first encoder is provided on the second support column, and the first encoder is connected to the other end of the pitch axis.

[0006] Optionally, the pitch drive mechanism includes a first servo motor and a first reducer, the output end of the first servo motor is connected to the input end of the first reducer, and the output end of the first reducer is fixedly connected to one end of the pitch axis.

[0007] Optionally, the pitch drive mechanism further includes a first hand rocker, and the first hand rocker is connected to the input end of the first reducer.

[0008] Optionally, the slewing assembly includes a slewing platform, a track support seat is arranged in a circular array on the slewing platform, sliders are arranged relatively on the track support seat, a circular track is slidably connected between the two sliders, a track mounting plate is arranged in the middle of the pitch support frame, the circular track is fixedly connected to the track mounting plate, and a slewing drive mechanism for driving the pitch support frame to rotate along the circular track is arranged on the slewing platform.

[0009] Optionally, the rotary drive mechanism includes a second servo motor and a second reducer, the output end of the second servo motor is connected to the input end of the second reducer, and the output end of the second reducer drives the track mounting plate to rotate through a transmission mechanism.

[0010] Optionally, a second hand crank is further included, and the second hand crank is connected to the input end of the second reducer.

[0011] Optionally, a rotating shaft is arranged in the middle of the track mounting plate, a second encoder is arranged on the rotating platform, and the second encoder is connected to the rotating shaft.

[0012] Optionally, a support seat and universal wheels are provided at the bottom of the rotating platform.

[0013] The beneficial effect of the device for performance testing of a high-power microwave large-scale radiating antenna provided by the present invention is that: compared with the prior art, the present invention includes a test load assembly, a pitch support assembly and a swivel assembly, the antenna to be tested is installed by the test load assembly, the pitch angle of the test load assembly is adjusted and measured by the pitch support assembly, and the swivel angle of the pitch support assembly is adjusted and measured by the swivel assembly, thereby achieving the adjustment and measurement of the pitch angle and swivel angle of the antenna to be tested. According to the antenna performance test requirements, the pitch angle and swivel angle of the antenna array can be servo-controlled, and the servo control accuracy is better than 0.1°. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 A schematic diagram of the overall structure of a device for testing the performance of a high-power microwave large radiating antenna provided by an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of the structure of a test load assembly provided in an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of the structure of the pitch support assembly provided in an embodiment of the present invention Figure 1 ;

[0018] Figure 4 A schematic diagram of the structure of the pitch support assembly provided in an embodiment of the present invention Figure 2 ;

[0019] Figure 5 A schematic diagram of the structure of a rotary assembly provided in an embodiment of the present invention;

[0020] Figure 6 for Figure 5 Enlarged view of part A.

[0021] Among them, the reference numerals in the figure are:

[0022] 1. Test load assembly; 11. Load rack; 12. Load mounting plate; 13. Pitch axis; 2. Pitch support assembly; 21. Pitch support frame; 22. Second support column; 23. Track mounting plate; 24. First servo motor; 25. First reducer; 26. First hand rocker; 27. First encoder; 28. Bearing; 29. ​​Rotary axis; 3. Rotary assembly; 31. Rotary platform; 32. Track support seat; 33. Annular track; 34. Slider; 35. Transmission mechanism; 36. Second reducer; 37. Second servo motor; 38. Second hand rocker; 4. Antenna to be tested. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] Please also read Figure 1-Figure 6 Now, the device for testing the performance of a high-power microwave large radiating antenna provided by an embodiment of the present invention is described.

[0028] A device for testing the performance of a high-power microwave large-scale radiating antenna comprises a test load assembly 1, a pitch support assembly 2 and a swivel assembly 3, wherein the test load assembly 1 is used to install an antenna 4 to be tested, the pitch support assembly 2 is used to adjust and measure the pitch angle of the test load assembly 1, and the swivel assembly 3 is used to adjust and measure the swivel angle of the pitch support assembly 2.

[0029] During the test, the antenna 4 to be tested is installed by the test load assembly 1, the pitch angle of the test load assembly 1 is adjusted and measured by the pitch support assembly 2, and the rotation angle of the pitch support assembly 2 is adjusted and measured by the rotation assembly 3, thereby achieving the adjustment and measurement of the pitch angle and rotation angle of the antenna 4 to be tested. According to the antenna performance test requirements, the pitch angle and rotation angle of the antenna array can be controlled.

[0030] In some embodiments of the present invention, see Figure 2 The test load assembly 1 includes a load rack 11 , a load mounting plate 12 is disposed on the load rack 11 , the antenna 4 to be tested is connected to the load mounting plate 12 , and pitch axes 13 are disposed at both ends of the load rack 11 .

[0031] Large antenna radiation arrays of different sizes and shapes can be installed through the load mounting plate 12 to meet the antenna performance test requirements. The load bracket 11 can rotate around the pitch axis 13, thereby driving the antenna 4 to rotate and adjusting its pitch angle.

[0032] In some embodiments of the present invention, see Figure 3The pitch support assembly 2 includes a pitch support frame 21, which is connected to the slewing assembly 3. The pitch support frame 21 is provided with a first support column and a second support column 22. The two ends of the pitch axis 13 are rotatably connected to the first support column and the second support column 22 through bearings 28 respectively. The first support column is provided with a pitch driving mechanism, which is fixedly connected to one end of the pitch axis 13. The second support column 22 is provided with a first encoder 27, and the first encoder 27 is connected to the other end of the pitch axis 13.

[0033] The pitch drive mechanism can drive the pitch axis 13 to rotate, thereby adjusting the pitch angle of the antenna 4 to be tested, and the first encoder 27 can display the change of the pitch angle in real time.

[0034] In some embodiments of the present invention, see Figure 2 The pitch driving mechanism includes a first servo motor 24 and a first reducer 25 . The output end of the first servo motor 24 is connected to the input end of the first reducer 25 . The output end of the first reducer 25 is fixedly connected to one end of the pitch axis 13 .

[0035] The first servo motor 24 can drive the first reducer 25 to rotate, and the first reducer 25 drives the pitch axis 13 to rotate. The first servo motor 24 and the first reducer 25 can achieve precise control of the pitch angle of the antenna 4 to be tested, with an accuracy better than 0.1°.

[0036] In some embodiments of the present invention, see Figure 3 The pitch driving mechanism also includes a first hand rocker 26 , and the first hand rocker 26 is connected to the input end of the first reducer 25 .

[0037] When there is no power, the first hand crank 26 can be used to drive the first reducer 25 to rotate, thereby driving the pitch axis 13 to rotate, so as to adjust the pitch angle of the antenna 4 to be tested.

[0038] In some embodiments of the present invention, see Figure 4 The slewing assembly 3 includes a slewing platform 31, on which a circular array of track support seats 32 are arranged, on which sliders 34 are arranged relatively, and between which a circular track 33 is slidably connected, a track mounting plate 23 is arranged in the middle of the pitch support frame 21, and the circular track 33 is fixedly connected to the track mounting plate 23, and a slewing driving mechanism for driving the pitch support frame 21 to rotate along the circular track 33 is arranged on the slewing platform 31.

[0039] The annular track 33 can support the pitch support frame 21 , and then transmit the force received to the rotary platform 31 through the track support seat 32 , thereby improving the stability of the pitch support frame 21 .

[0040] For details, see Figure 6The cross section of the annular track 33 is an I-shaped one, and one side of the slider 34 is located in the groove on the side of the annular track 33. During the rotation process, the slider 34 remains stationary while the annular guide rail performs a rotational motion. Optionally, the slider 34 may also adopt a wheel-shaped structure and be rotatably connected to the track support seat 32, thereby converting the sliding friction with the annular track 33 into rolling friction, thereby reducing the friction force.

[0041] In some embodiments of the present invention, the rotary drive mechanism includes a second servo motor 37 and a second reducer 36 , the output end of the second servo motor 37 is connected to the input end of the second reducer 36 , and the output end of the second reducer 36 drives the track mounting plate 23 to rotate through the transmission mechanism 35 .

[0042] The second servo motor 37 can drive the second reducer 36 to rotate, and the second reducer 36 drives the track mounting plate 23 to rotate through the transmission mechanism 35, thereby adjusting the rotation angle of the antenna to be tested 4. The rotation angle of the antenna to be tested 4 can be precisely controlled by the second servo motor 37 and the second reducer 36, with an accuracy better than 0.1°.

[0043] In some embodiments of the present invention, see Figure 5 The transmission mechanism 35 can be a worm gear mechanism, wherein the worm is connected to the output end of the second reducer 36, and the turbine is coaxially fixedly connected to the track mounting plate 23. In other embodiments of the present invention, other transmission mechanisms 35 can also be used, as long as the second reducer 36 drives the track mounting plate 23 to rotate, and the present invention is not limited thereto.

[0044] In some embodiments of the present invention, see Figure 5 , further comprising a second hand crank 38, the second hand crank 38 being connected to the input end of the second reducer 36. When the power is off, the second hand crank 38 can be used to drive the second reducer 36 to rotate, thereby adjusting the rotation angle of the antenna 4 to be tested.

[0045] In some embodiments of the present invention, see Figure 4 A rotary shaft 29 is arranged in the middle of the track mounting plate 23, and a second encoder is arranged on the rotary platform 31, and the second encoder is connected to the rotary shaft 29. The change of the rotary angle can be displayed in real time through the second encoder.

[0046] In some embodiments of the present invention, see Figure 1 A support seat and universal wheels are provided at the bottom of the rotary platform 31. The support seat is used to support the rotary platform 31 to prevent the device from moving. When it is necessary to transfer, it can be moved by the universal wheels.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for testing the performance of a high-power microwave large radiating antenna, characterized in that: It includes a test load assembly, a pitch support assembly and a swivel assembly. The test load assembly is used to install the antenna to be tested, the pitch support assembly is used to adjust and measure the pitch angle of the test load assembly, and the swivel assembly is used to adjust and measure the swivel angle of the pitch support assembly.

2. The device for testing the performance of a high-power microwave large radiating antenna according to claim 1, characterized in that: The test load assembly comprises a load rack, a load mounting plate is arranged on the load rack, the antenna to be tested is connected to the load mounting plate, and pitch axes are arranged at both ends of the load rack.

3. The device for testing the performance of a high-power microwave large radiating antenna according to claim 2, characterized in that: The pitch support assembly includes a pitch support frame, which is connected to the slewing assembly, and a first support column and a second support column are provided on the pitch support frame. Both ends of the pitch axis are rotatably connected to the first support column and the second support column respectively through bearings. A pitch drive mechanism is provided on the first support column, and the pitch drive mechanism is fixedly connected to one end of the pitch axis. A first encoder is provided on the second support column, and the first encoder is connected to the other end of the pitch axis.

4. The device for testing the performance of a high-power microwave large radiating antenna according to claim 3, characterized in that: The pitch drive mechanism includes a first servo motor and a first reducer, the output end of the first servo motor is connected to the input end of the first reducer, and the output end of the first reducer is fixedly connected to one end of the pitch axis.

5. The device for testing the performance of a high-power microwave large-scale radiating antenna according to claim 4, characterized in that: The pitch drive mechanism further includes a first hand rocker connected to an input end of the first reducer.

6. The device for testing the performance of a high-power microwave large-scale radiating antenna according to claim 3, characterized in that: The slewing assembly includes a slewing platform, a track support seat is arranged in a circular array on the slewing platform, sliders are arranged on the track support seat relatively, a circular track is slidably connected between the two sliders, a track mounting plate is arranged in the middle of the pitch support frame, the circular track is fixedly connected to the track mounting plate, and a slewing drive mechanism for driving the pitch support frame to rotate along the circular track is arranged on the slewing platform.

7. The device for testing the performance of a high-power microwave large radiating antenna according to claim 6, characterized in that: The rotary drive mechanism includes a second servo motor and a second reducer, the output end of the second servo motor is connected to the input end of the second reducer, and the output end of the second reducer drives the track mounting plate to rotate through a transmission mechanism.

8. The device for testing the performance of a high-power microwave large radiating antenna according to claim 7, characterized in that: It also includes a second hand crank, which is connected to the input end of the second reducer.

9. The device for testing the performance of a high-power microwave large-scale radiating antenna according to claim 6, characterized in that: A rotary shaft is arranged in the middle of the track mounting plate, a second encoder is arranged on the rotary platform, and the second encoder is connected to the rotary shaft.

10. The device for testing the performance of a high-power microwave large-scale radiating antenna according to claim 6, characterized in that: A support seat and universal wheels are arranged at the bottom of the rotary platform.

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