Automatic test system for thermal vacuum test of Ka phased-array antenna

Abstract

The invention relates to the technical field of antenna automatic testing, and discloses a Ka phased-array antenna thermal vacuum test automatic testing system which comprises a supporting frame, a thermal vacuum box is fixedly connected to the middle side of the top of the supporting frame, a temperature control device is installed in the thermal vacuum box, and a vacuum mechanism is arranged on the outer side of the thermal vacuum box. A base is fixedly connected to the inner bottom wall of the thermal vacuum box, two electric guide rails are arranged on the top of the base, a sliding seat is arranged on the outer sides of the electric guide rails, and a fixing mechanism is arranged on the top of the sliding seat. According to the invention, the plugging mechanism is arranged, the plugging mechanism comprises the connecting seat driven by the electric push rod and can drive the plurality of joints to automatically move towards the interface of the phased-array antenna main body and complete plugging, the traditional manual wiring operation is replaced, the connection process in the test preparation stage is automated, the time consumption caused by manual operation is shortened, and the test efficiency is improved. The preparation efficiency of a single test is improved, and the large-scale test of the antenna becomes possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of antenna automation testing, and particularly relates to a Ka phased array antenna hot vacuum test automatic testing system. BACKGROUND

[0002] In the research and verification process of a Ka phased array antenna, a hot vacuum environment test is a necessary link for evaluating the space environment adaptability. The test verifies the core technical indexes such as the radio frequency performance and beam pointing accuracy of the antenna by simulating the extreme temperature cycle and high vacuum condition of the on-orbit operation of a spacecraft.

[0003] In the prior art, the preparation work before the test, especially the interface docking between the test equipment and the Ka phased array antenna to be tested, usually completely depends on manual operation. The test personnel need to manually complete the connection of the radio frequency cable, the control signal cable and the temperature measurement signal cable at the special sealed interface of the hot vacuum tank. This process not only requires accurate matching of multiple groups of high-frequency radio frequency connectors of different specifications, such as 2.92mm or 1.85mm interfaces, but also needs to connect the control and sensing lines at the same time.

[0004] This traditional manual wiring method has inherent limitations. Since the multi-channel phased array antenna has a large number of interfaces, manual connection one by one will consume a lot of time, significantly prolong the preparation period of a single test, and thus directly restricts the overall throughput of the test, which is difficult to meet the test needs of mass production. In addition, manual operation in the docking of precision radio frequency connectors is difficult to guarantee consistency in the force of insertion and the accuracy of alignment. The operation deviation will cause signal transmission loss, affect the accuracy of test data, and even cause physical damage to the connector, resulting in test interruption. The whole test process highly depends on manual intervention, and the links are not closely connected, and there is a lack of integrated automatic solution. SUMMARY

[0005] The purpose of the present application is to provide a Ka phased array antenna hot vacuum test automatic testing system, which aims to improve the problems of low test efficiency, long cycle and easy damage to precision interfaces due to improper operation in the prior art.

[0006] In order to achieve the above object, the application is implemented by the following technical scheme: a kind of Ka phased array antenna hot vacuum test automatic test system, including support frame, the top middle side of the support frame is fixedly connected with hot vacuum box, temperature control device is installed in the hot vacuum box, vacuum mechanism is arranged on the outside of the hot vacuum box, the bottom wall in the hot vacuum box is fixedly connected with base, two electric guide rails are arranged on the top of the base, sliding seat is arranged on the outside of the electric guide rail, fixed mechanism is arranged on the top of the sliding seat, the fixed mechanism is used to fix phased array antenna main body, a plurality of interfaces are arranged in the phased array antenna main body, test mechanism is arranged on the top of the base, plug-in mechanism is arranged on the top of the base; The plug-in mechanism includes a sliding rail, the bottom of the sliding rail is fixedly connected to the middle side of the top of the base, the top of the sliding rail is fixedly connected with a support block, the support block is fixedly connected with an electric push rod on the outside, the output end of the electric push rod is fixedly connected with a connecting plate, the connecting plate is fixedly connected with a connecting seat on the outside, two fixed plates are arranged on the inner wall of the connecting seat, a plurality of joints are arranged between the two fixed plates, cables are fixedly connected to the outside of the joints, torque sensing modules are installed on the inner wall of the fixed plate, a sliding block is fixedly connected to the bottom of the connecting seat, and the interface is inserted between the joint.

[0007] Preferably, the fixed mechanism includes a mounting seat and a motor, the motor is fixedly connected to the inner wall of the mounting seat on the outside, the mounting seat is fixedly connected to the top of the sliding seat on the bottom, two sliding grooves are formed in the mounting seat, two sliding rods are fixedly connected to the inner wall of the sliding groove, a moving plate is slidably connected to the outside of the sliding rod, a clamping plate is fixedly connected to the top of the moving plate, a turntable is fixedly connected to the output end of the motor, a rotating rod is arranged between the turntable and the moving plate, and a guide mechanism is arranged on the outside of the mounting seat.

[0008] Preferably, the guide mechanism includes a plurality of connecting rods, one end of two connecting rods is fixedly connected to the outside of the mounting seat, a tapered guide opening is fixedly connected between the two connecting rods, and the tapered guide opening is arranged on the outside of the interface.

[0009] Preferably, the test mechanism includes a plurality of support rods, two Y-axis linear modules are fixedly connected to the top of the support rod, an X-axis linear module is arranged between the two Y-axis linear modules, a Z-axis linear module is arranged on the outside of the X-axis linear module, and a tester is arranged on the outside of the Z-axis linear module.

[0010] Preferably, the vacuum assembly includes a vacuum pump, the vacuum pump is installed on the top of the support frame on the outside, a vacuum pipe is fixedly connected to the top of the hot vacuum box on the side away from the vacuum pump on the outside of the vacuum pump.

[0011] Preferably, a control panel is arranged outside the support frame.

[0012] Preferably, a door is arranged on the left side of the hot vacuum box, and an observation window is arranged on the inner wall of the hot vacuum box.

[0013] Preferably, the sliding block is slidably connected to the outer side of the slide rail, and the sliding seat is slidably connected to the outer side of the slide rail.

[0014] Preferably, one end of the rotating rod is rotatably connected to the bottom of the moving plate, and the other end of the rotating rod is rotatably connected to the top edge of the rotating disc.

[0015] Preferably, the cable is fixedly connected to the outer side of the tester away from the connector.

[0016] In summary, the present application has the following at least one beneficial technical effect: 1. The present application sets up a plug-in mechanism, which includes a connecting seat driven by an electric push rod, can drive multiple connectors to automatically move to the interface of the phased array antenna body and complete the plug-in, replaces the traditional manual wiring operation, automates the connection process in the test preparation stage, shortens the time consumption caused by manual operation, improves the preparation efficiency of single test, and makes it possible to test the antenna on a large scale.

[0017] 2. The present application sets up a torque sensing module in the connecting seat of the plug-in mechanism, and sets up a conical guide port outside the antenna interface. In the automatic docking process, the conical guide port guides the physical position of the approaching connector, and corrects the alignment deviation; at the same time, the torque sensing module monitors the physical force in the plug-in process in real time, and controls the plug-in force through feedback. The combination of the two reduces the risk of damage to precision connectors caused by inaccurate alignment or improper force, and guarantees the physical reliability of the test signal link.

[0018] 3. The present application integrates the fixing mechanism for fixing the antenna, the electric guide rail for conveying the antenna, the plug-in mechanism for automatic docking, and the test mechanism (including X, Y, Z axis linear module and tester) for scanning test in the hot vacuum box, realizes the full-process automation from antenna installation, positioning, connection to performance scanning test, reduces the circulation and manual intervention between processes, and improves the consistency of the whole test process and the consistency of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the present application; Figure 2 is a schematic view of the vacuum pump of the present application; Figure 3 is a schematic view of the phased array antenna body of the present application; Figure 4 isFigure 3 Enlarged view at A; Figure 5 Schematic view of the tester of the present application; Figure 6 Schematic view of the tapered guide hole of the present application; Figure 7 Schematic view of the turntable of the present application; Figure 8 Schematic view of the electric push rod of the present application.

[0020] Wherein, 1, hot vacuum box; 2, support frame; 3, observation window; 4, box door; 5, vacuum pump; 6, vacuum pipe; 7, base; 8, electric guide rail; 9, mounting seat; 10, sliding seat; 11, tapered guide hole; 12, connecting rod; 13, sliding groove; 14, sliding rod; 15, moving plate; 16, clamping plate; 17, rotating rod; 18, turntable; 19, motor; 20, support block; 21, sliding rail; 22, electric push rod; 23, connecting plate; 24, connecting seat; 25, fixed plate; 26, sliding block; 27, cable; 28, connector; 29, Y-axis linear module; 30, X-axis linear module; 31, Z-axis linear module; 32, tester; 33, torque sensing module; 34, phased array antenna body; 35, interface; 36, support rod; 37, control panel; 38, temperature control device. DETAILED DESCRIPTION

[0021] Please refer to the attached Figure 1 - attached Figure 8 The embodiment of the present application provides a kind of Ka phased array antenna hot vacuum test automatic testing system, including support frame 2, support frame 2 top middle side is fixedly connected with hot vacuum box 1, temperature control device 38 is installed in hot vacuum box 1 inside, vacuum mechanism is provided on the outside of hot vacuum box 1, hot vacuum box 1 inner bottom wall is fixedly connected with base 7, two electric guide rails 8 are provided on the top of base 7, electric guide rail 8 outside is provided with sliding seat 10, fixed mechanism is provided on the top of sliding seat 10, and fixed mechanism is used to fix phased array antenna body 34, and phased array antenna body 34 is provided with multiple interfaces 35 inside, test mechanism is provided on the top of base 7, and pull-out mechanism is provided on the top of base 7. Pull-out mechanism includes sliding rail 21, and sliding rail 21 outside bottom is fixedly connected in the top middle side of base 7, and sliding rail 21 top is fixedly connected with support block 20, and support block 20 outside is fixedly connected with electric push rod 22, and electric push rod 22 output end is fixedly connected with connecting plate 23, and connecting plate 23 outside is fixedly connected with connecting seat 24, and connecting seat 24 inner wall is provided with two fixed plates 25, and multiple connectors 28 are provided between the two fixed plates 25, and connector 28 outside is fixedly connected with cable 27, and torque sensing module 33 is installed in the inner wall of fixed plate 25, and sliding block 26 is fixedly connected in the bottom of connecting seat 24, and interface 35 is inserted between connector 28.

[0022] Specifically, the support frame 2 provides a stable structural basis for the entire system. The thermal vacuum chamber 1 is used to build a closed physical space to isolate the external environment and simulate a specific space environment. In order to realize environment simulation, a vacuum mechanism is used to extract the gas in the thermal vacuum chamber 1 to form a high vacuum state, and a temperature control device 38 is used to accurately adjust and cyclically control the temperature inside the chamber. The base 7 serves as a reference platform inside the chamber and is used to carry and fix subsequent automated devices. The electric guide rail 8 serves as a set of precise linear conveying units, which drive the sliding seat 10 to move back and forth along a predetermined trajectory, thereby conveying the phased array antenna body 34 to be tested to the test station or the initial station. The sliding seat 10 serves as a mobile carrying platform, on which a fixing mechanism is specially arranged to reliably clamp and fix the phased array antenna body 34, so as to ensure the stability of its posture during movement and docking. The phased array antenna body 34 is the target object of this test, and the multiple interfaces 35 integrated thereon are physical connection points for realizing the transmission of electrical signals and radio frequency signals. The plug-in mechanism is a core automated execution unit, and its overall function is to realize the automatic and accurate docking and separation of the test connectors and the antenna interfaces. In the mechanism, the sliding rail 21 provides an accurate guide path for the movement of the connecting seat 24; the electric push rod 22 serves as a power source for generating a controllable linear pushing and pulling force to drive the connecting seat 24 to complete the forward insertion and backward extraction actions; the connecting seat 24 serves as an integrated connector array head for uniformly loading and positioning multiple connectors 28, ensuring that they can be matched as a whole with the antenna interface 35 array; the connector 28 is the end execution member directly inserted with the interface 35, and the signal is transmitted to the test mechanism through the cable 27; the torque sensing module 33 is a key monitoring and feedback element, which aims to sense the physical force and torque generated during the insertion of the connector 28 and the interface 35 in real time, and feed back the data to the control system to prevent damage to the precision connectors caused by overload or misalignment. Finally, the test mechanism is used to automatically scan and measure the various radio frequency performance indicators of the antenna after connection.

[0023] Please refer to the accompanying Figure 6 and the accompanying Figure 7 , the fixing mechanism includes a mounting seat 9 and a motor 19, the motor 19 is fixedly connected outside the inner wall of the mounting seat 9, the bottom of the mounting seat 9 is fixedly connected to the top of the sliding seat 10, two sliding grooves 13 are formed in the inside of the mounting seat 9, two sliding rods 14 are fixedly connected to the inner wall of the sliding grooves 13, a moving plate 15 is slidably connected to the outside of the sliding rods 14, a clamping plate 16 is fixedly connected to the top of the moving plate 15, a rotating disc 18 is fixedly connected to the output end of the motor 19, a rotating rod 17 is arranged between the rotating disc 18 and the moving plate 15, and a guide mechanism is arranged outside the mounting seat 9.

[0024] Specifically, the mounting base 9 provides the overall structural framework and mounting reference for the fixture. The motor 19 serves as the power source for the fixture, and its purpose is to provide controllable rotary motion to drive the entire clamping action. The rotating disc 18 is used to convert the rotary output of the motor 19 into an eccentric circular motion. The rotating rod 17 serves as a key transmission link, and its role is to convert the circular motion of the rotating disc 18 into the linear reciprocating motion of the moving plate 15. This rotary-to-linear motion conversion mechanism is the core of the automated clamping. The slide rod 14 and the slide groove 13 together form a set of precise linear guide pairs, and their purpose is to constrain the moving plate 15 to move smoothly along the pre-set axis direction, so as to ensure the accuracy and repeatability of the clamping action. The moving plate 15 is the direct executor of the clamping action, and the clamping plate 16 installed on it is used to finally contact and apply clamping force to the phased array antenna body 34.

[0025] In a preferred embodiment, two opposite moving plates 15 and clamping plates 16 can be provided, driven by the motor 19 through symmetrical transmission mechanisms such as left and right screw rods or gear and rack mechanisms, to realize bidirectional synchronous clamping, so as to ensure that the phased array antenna body 34 can be automatically centered. In addition, the surface of the clamping plate 16 in contact with the antenna is preferably covered with a flexible material such as polytetrafluoroethylene or rubber of a specific hardness, which is to provide sufficient friction while preventing the antenna body from being scratched or damaged due to excessive clamping force. Therefore, by starting and stopping and forward and reverse rotation control of the motor 19, the clamping plate 16 can be driven to complete the automatic clamping or loosening of the antenna. In addition, the guide mechanism is provided to provide preliminary alignment assistance when placing the antenna, so as to ensure that the antenna can be smoothly placed within the working range of the clamping plate 16 Please refer to the attached Figure 5 The guide mechanism includes a plurality of connecting rods 12, two of which are fixedly connected at one end to the outside of the mounting base 9, and a tapered guide opening 11 is fixedly connected between the two connecting rods 12, and the outside of the tapered guide opening 11 is arranged outside the interface 35.

[0026] Specifically, the tapered guide port 11 is the core component to realize the guiding function, which provides an initial alignment capture range for the incoming connector 28 by using the tapered geometry of its inner wall from wide to narrow. Even if there is a slight translational or angular deviation between the connector 28 and the interface 35, when the connector 28 enters the wide end of the tapered guide port 11, the inclined surface of its inner wall will force the connector 28 to automatically correct its posture and converge towards the center during its continued advancement, ultimately guiding it accurately to the rear antenna interface 35, ensuring smooth and reliable plugging process and avoiding damage caused by collision. The multiple connecting rods 12 serve as support and positioning structures, which are intended to firmly fix the tapered guide port 11 in the pre-set position, ensuring a constant and precise relative positional relationship between it and the antenna interface 35, providing stable structural support for the realization of the guiding function.

[0027] Please refer to the accompanying drawings Figure 8 The test mechanism includes multiple support rods 36, the top of which is fixedly connected with two Y-axis linear modules 29, between which an X-axis linear module 30 is arranged, the outer side of which is provided with a Z-axis linear module 31, and the outer side of the Z-axis linear module 31 is provided with a tester 32.

[0028] Specifically, the multiple support rods 36 serve as the stable base of the entire mechanism, which is intended to provide a vibration-free load platform reaching the predetermined working height for the multi-axis motion system. The two Y-axis linear modules 29 and the X-axis linear module 30 installed thereon jointly constitute a two-dimensional plane positioning system, which is intended to realize the free movement of the tester 32 in the horizontal plane; specifically, the Y-axis linear module 29 is used to provide the first dimension of motion stroke, while the X-axis linear module 30 is used to provide the second dimension of motion stroke perpendicular to the first one, and the two work together to accurately position the tester 32 to any plane coordinate point above the antenna to be tested. The Z-axis linear module 31 is used to provide the third dimension of motion in the vertical direction, which is intended to accurately adjust the scanning distance between the probe of the tester 32 and the surface of the antenna. Finally, the three-dimensional Cartesian coordinate motion system composed of the X-axis, Y-axis and Z-axis linear modules 30, 29 and 31 is intended to drive the tester 32 as the end measurement unit to move in the pre-set three-dimensional space following a complex scanning path, thereby realizing the full-range and multi-point automatic data collection of the performance indicators of the phased array antenna such as the near-field distribution and the far-field pattern.

[0029] Please refer to the accompanying drawings Figure 1 The vacuum assembly includes a vacuum pump 5 installed on the top of the support frame 2, and a vacuum tube 6 fixedly connected to the outer side of the vacuum pump 5, and the end of the vacuum tube 6 away from the vacuum pump 5 is fixedly connected to the top and middle side of the hot vacuum box 1.

[0030] Specifically, the vacuum pump 5 is the main active component to realize this function, which aims to reduce the pressure inside the hot vacuum chamber 1 to a specific vacuum level by continuously pumping out the air or other gas molecules, so as to accurately simulate the high vacuum environment in which the spacecraft is running in orbit, which is one of the key physical environmental parameters to ensure the effectiveness of the test. The vacuum pipe 6 is used to build a sealed and reliable gas transmission link between the vacuum pump 5 and the hot vacuum chamber 1, which ensures that the pumping efficiency generated by the vacuum pump 5 can be delivered to the hot vacuum chamber 1 without loss and pollution, ensuring the efficiency and cleanliness of the entire vacuum pumping process.

[0031] Please refer to the attached Figure 1 -attached Figure 8 The control panel 37 is arranged on the outer side of the support frame 2, the chamber door 4 is arranged on the left side of the hot vacuum chamber 1, the observation window 3 is installed on the inner wall of the hot vacuum chamber 1, the sliding block 26 is slidingly connected to the outer side of the slide rail 21, the sliding seat 10 is slidingly connected to the outer side of the slide rail 21, the rotating rod 17 is rotatably connected to the bottom of the moving plate 15 at one end, and the rotating rod 17 is rotatably connected to the top edge of the rotating disc 18 at the other end, characterized in that the cable 27 is fixedly connected to the outer side of the tester 32 away from the connector 28.

[0032] Specifically, the control panel 37 is used to provide a man-machine interaction interface for the operator, which aims to set the test parameters, start or stop the automatic process, and monitor the running state of the system in real time. The chamber door 4 is used to provide a sealable physical channel, which is used to facilitate the operator to load and take out the phased array antenna body 34 to be tested, and to ensure that the internal environment of the hot vacuum chamber 1 is isolated from the outside world when closed. The observation window 3 is arranged to monitor and confirm the running process of the internal automatic mechanism in real time without destroying the vacuum and temperature conditions in the chamber. In terms of internal movement mechanism, the sliding block 26 and the sliding seat 10 can slide on the slide rail 21, which is designed to give the plug-in mechanism and the fixing mechanism the ability to move accurately along the predetermined path, thereby realizing the automatic docking of the interface and the accurate positioning of the antenna. The rotating connection of the rotating rod 17 at both ends constitutes the key of motion conversion, which acts as a movable pivot to effectively convert the rotary motion of the rotating disc 18 into the linear motion of the moving plate 15, and then drive the opening and closing of the clamping mechanism. Finally, the cable 27 establishes a stable electric signal transmission link from the connector 28 to the tester 32, which is dedicated to carrying high-frequency test signals and is the physical basis for accurately measuring the radio frequency performance of the antenna.

[0033] Working principle: The operator first puts the phased array antenna body 34 to be tested on the fixing mechanism through the door 4 of the hot vacuum box 1. Then, the motor 19 in the fixing mechanism starts to drive the rotating disc 18 to rotate, and the moving plate 15 moves on the slide rod 14 through the rotating rod 17 linkage, so that the clamping plate 16 on the top of the moving plate 15 automatically clamps and fixes the phased array antenna body 34, completing the installation process. The whole process can be monitored through the observation window 3 on the hot vacuum box 1.

[0034] After the phased array antenna body 34 is fixed and the door 4 is closed, the operator starts the system through the external control panel 37. First, the vacuum component starts to work, and the vacuum pump 5 installed on the support frame 2 pumps the inside of the hot vacuum box 1 through the vacuum pipe 6 to simulate the vacuum environment in space. At the same time, the temperature control device 38 installed in the hot vacuum box 1 starts to work, and according to the preset test program, the temperature in the box is accurately adjusted to simulate the extreme high and low temperature cycle environment experienced by the spacecraft in orbit.

[0035] After the hot vacuum environment is stable, the system enters the core automatic docking link.

[0036] Antenna positioning: The two electric guide rails 8 installed on the base 7 start to work, driving the sliding seat 10 to move. Since the phased array antenna body 34 is fixed on the sliding seat 10, this step can accurately transport the antenna to the predetermined test station.

[0037] Automatic plug-in and pull-out of interface: The plug-in and pull-out mechanism on the base 7 starts to work. The electric push rod 22 starts to work, and its output end pushes the connecting plate 23 and the connecting seat 24 to move along the slide rail 21 towards the phased array antenna body 34. In order to ensure the accuracy of the docking process, the conical guide hole 11 arranged on the outer side of the antenna interface 35 plays a key guiding role in this link. A plurality of connectors 28 matched with the antenna interface 35 are installed on the connecting seat 24. During the movement, the connectors 28 are accurately aligned with the multiple interfaces 35 of the antenna, and finally the plug-in is completed. In order to prevent the precise interface from being damaged due to excessive force or alignment deviation, the torque sensing module 33 installed in the inner wall of the fixed plate 25 will monitor the force and torque in the plug-in process in real time, realize closed-loop feedback control, and ensure the accuracy and safety of the docking.

[0038] After the interface docking is completed, the test mechanism starts to perform the test task. The cable 27 connected to the connector 28 transmits the signal to the tester 32. The tester 32 can move in three-dimensional space under the coordinated driving of the X-axis linear module 30, the Y-axis linear module 29 and the Z-axis linear module 31, so as to automatically scan and measure the various radio frequency performance indicators of the antenna such as beam pointing accuracy, gain, etc. The test data is collected in real time and can be transmitted to the external MES system to realize data tracing and management.

[0039] After the test procedure is completed, the system automatically performs the reverse operation. First, the electric push rod 22 moves in reverse, smoothly pulling the connecting seat 24 and the joint 28 out of the antenna interface 35. Then, the electric guide rail 8 drives the sliding seat 10 to send the phased array antenna body 34 back to the initial position. Finally, the system releases the vacuum and temperature control state, and after the normal temperature and pressure are restored in the hot vacuum box 1, the operator can open the box door 4, loosen the clamping plate 16 by reversing the motor 19, and remove the antenna that has completed the test.

Claims

1. An automatic testing system for thermal vacuum testing of a Ka-phased array antenna, characterized in that, Includes a support frame (2), on which a thermal vacuum chamber (1) is fixedly connected at the top center. A temperature control device (38) is installed inside the thermal vacuum chamber (1). A vacuum mechanism is provided on the outside of the thermal vacuum chamber (1). A base (7) is fixedly connected to the bottom wall of the thermal vacuum chamber (1). Two electric guide rails (8) are provided on the top of the base (7). A sliding seat (10) is provided on the outside of the electric guide rails (8). A fixing mechanism is provided on the top of the sliding seat (10). The fixing mechanism is used to fix the phased array antenna body (34). Multiple interfaces (35) are provided inside the phased array antenna body (34). A testing mechanism is provided on the top of the base (7). A plug-in mechanism is provided on the top of the base (7). The plug-in mechanism includes a slide rail (21), the bottom outer side of which is fixedly connected to the top middle side of the base (7). A support block (20) is fixedly connected to the top of the slide rail (21). An electric push rod (22) is fixedly connected to the outside of the support block (20). A connecting plate (23) is fixedly connected to the output end of the electric push rod (22). A connecting seat (24) is fixedly connected to the outside of the connecting plate (23). Two fixing plates (25) are provided on the inner wall of the connecting seat (24). Multiple connectors (28) are provided between the two fixing plates (25). A cable (27) is fixedly connected to the outside of the connector (28). A torque sensing module (33) is installed on the inner wall of the fixing plate (25). A sliding block (26) is fixedly connected to the bottom of the connecting seat (24). The interface (35) is plugged into the connector (28).

2. The automatic testing system for thermal vacuum testing of a Ka-phased array antenna according to claim 1, characterized in that, The fixing mechanism includes a mounting base (9) and a motor (19). The motor (19) is fixedly connected to the inner wall of the mounting base (9) on the outside. The bottom of the mounting base (9) is fixedly connected to the top of the sliding seat (10). Two sliding grooves (13) are opened inside the mounting base (9). Two sliding rods (14) are fixedly connected to the inner wall of the sliding grooves (13). A moving plate (15) is slidably connected to the outside of the sliding rods (14). A clamping plate (16) is fixedly connected to the top of the moving plate (15). A turntable (18) is fixedly connected to the output end of the motor (19). A rotating rod (17) is provided between the turntable (18) and the moving plate (15). A guide mechanism is provided on the outside of the mounting base (9).

3. The automatic testing system for thermal vacuum testing of a Ka-phased array antenna according to claim 2, characterized in that, The guiding mechanism includes multiple connecting rods (12), two of which are fixedly connected at one end to the outside of the mounting base (9), and a tapered guide port (11) is fixedly connected between the two connecting rods (12), with the outside of the tapered guide port (11) located outside the interface (35).

4. The automatic testing system for thermal vacuum testing of a Ka-phased array antenna according to claim 1, characterized in that, The testing mechanism includes multiple support rods (36), with two Y-axis linear modules (29) fixedly connected to the top of the support rods (36), an X-axis linear module (30) disposed between the two Y-axis linear modules (29), a Z-axis linear module (31) disposed outside the X-axis linear module (30), and a testing instrument (32) disposed outside the Z-axis linear module (31).

5. The automatic testing system for thermal vacuum testing of a Ka-phased array antenna according to claim 1, characterized in that, The vacuum assembly includes a vacuum pump (5), which is mounted on the top of the support frame (2) on the outside. A vacuum tube (6) is fixedly connected to the outside of the vacuum pump (5), and the end of the vacuum tube (6) away from the vacuum pump (5) is fixedly connected to the middle side of the top of the hot vacuum box (1).

6. The automatic testing system for thermal vacuum testing of a Ka-phased array antenna according to claim 1, characterized in that, A control panel (37) is provided on the outside of the support frame (2).

7. The automatic testing system for thermal vacuum testing of a Ka-phased array antenna according to claim 1, characterized in that, The thermal vacuum chamber (1) has a door (4) on the left side and an observation window (3) installed on the inner wall of the thermal vacuum chamber (1).

8. The automatic testing system for thermal vacuum testing of a Ka phased array antenna according to claim 1, characterized in that, The outer side of the sliding block (26) is slidably connected to the outer side of the slide rail (21), and the outer side of the sliding seat (10) is slidably connected to the outer side of the slide rail (21).

9. The automatic testing system for thermal vacuum testing of a Ka phased array antenna according to claim 2, characterized in that, One end of the rotating rod (17) is rotatably connected to the bottom of the moving plate (15), and the other end of the rotating rod (17) is rotatably connected to the top edge of the turntable (18).

10. An automatic testing system for thermal vacuum testing of a Ka-phased array antenna according to claim 4, characterized in that, The end of the cable (27) away from the connector (28) is fixedly connected to the outside of the tester (32).

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