A force-thermal coupling evaluation system and method for a mirror assembly based on in-situ detection

Abstract

A force-thermal coupling evaluation system and method for a mirror assembly based on in-situ detection, belonging to the technical field of mechanical stability evaluation of precision optical elements in a dynamic environment. The present invention solves the problems of distortion of the coupling effect caused by the separation of mechanical loading and thermal environment simulation during the experiment of the existing mirror assembly, the lack of means for synchronous monitoring of multi-dimensional deformation, and the poor test repeatability caused by the insufficient automation degree during the experiment. It includes a central control system, a housing, and a conveyor belt, a mechanical loading platform, an automatic clamping assembly, a laser interferometer, an autocollimator, an optical monitoring assembly, and a high-speed camera monitoring assembly that are arranged in the housing and are signal-connected to the central control system. The optical monitoring assembly and the high-speed camera monitoring assembly realize real-time monitoring of the experiment process and deformation monitoring of the mirror assembly, and vibration is applied to the optical system assembly through the mechanical loading platform. The present invention is used for force-thermal coupling detection and evaluation of the mirror assembly.

Description

Technical Field

[0001] The present invention relates to a force-thermal coupling evaluation system and method for a mirror assembly based on in-situ detection, belonging to the technical field of mechanical stability evaluation of precision optical elements in a dynamic environment. Background Art

[0002] In the modern optoelectronic system architecture, as the core execution unit for optical path regulation, the dynamic stability of the mirror assembly directly determines the imaging quality of the optical system and the long-term service reliability. In typical application scenarios such as aerospace, vehicle-mounted optics, and precision instruments, this assembly needs to withstand a multi-physical field coupling environment of broadband random vibration loads and extreme temperature gradient coupling effects. Engineering practice shows that during the on-orbit operation of space optical payloads, the mirror surface shape distortion and support structure micro-displacements caused by thermo-mechanical loads will cause the system error to exhibit time-varying characteristics, significantly reducing the response performance of the optical transfer function. Since the mirror assembly is often embedded in a composite opto-mechanical structure, traditional off-line detection methods have limitations in efficiency and the risk of cumulative reloading errors, making it difficult to achieve in-situ dynamic characteristic characterization. Current research mostly focuses on the precise measurement of static geometric parameters, and there is still a lack of effective multi-dimensional synchronous evaluation means for key dynamic response indicators such as modal parameter identification under multi-degree-of-freedom coupled motion and monitoring of time-varying thermal stress distribution. Summary of the Invention

[0003] The present invention is to solve the problems of distortion of coupling effects caused by the separation of mechanical loading and thermal environment simulation during the experiment of the existing mirror assembly, the lack of multi-dimensional deformation synchronous monitoring means, and the poor test repeatability caused by insufficient automation during the experiment, and thus provides a force-thermal coupling evaluation system and method for a mirror assembly based on in-situ detection.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A force-thermal coupling evaluation system for a mirror assembly based on in-situ detection, comprising a central control system, a housing, and a conveyor belt, a mechanical loading platform, an automatic clamping assembly, a laser interferometer, an autocollimator, an optical monitoring assembly, and a high-speed camera monitoring assembly that are arranged inside the housing and are signal-connected to the central control system. Among them, the conveyor belt and the mechanical loading platform are arranged in a T shape in the horizontal direction, both ends of the conveyor belt communicate with the outside of the housing, the automatic clamping assembly is located above the mechanical loading platform and is slidably installed on the top of the housing along the length direction of the mechanical loading platform, the laser interferometer and the autocollimator are arranged opposite to each other on both sides of the mechanical loading platform, the mirror assembly is placed on the mechanical loading platform between the laser interferometer and the autocollimator through a tooling fixture, the optical monitoring assembly and the high-speed camera monitoring assembly are both installed on the top of the housing to realize real-time monitoring of the experimental process and deformation monitoring of the mirror assembly. Vibration is applied to the optical system assembly through the mechanical loading platform, and a temperature control device, a temperature measurement device, and an air quality detection module that are signal-connected to the central control system are also arranged inside the housing. The temperature control device provides a temperature environment for the optical system assembly, and the air quality detection module detects the cleanliness inside the housing.

[0006] Further, a positioning device is also arranged inside the housing. The positioning device is located above the conveyor belt or on the side of the conveyor belt away from the mechanical loading platform, and the positioning device is arranged along the extension line direction of the mechanical loading platform.

[0007] Further, both the laser interferometer and the autocollimator are installed on the bottom of the housing through a two-dimensional moving platform to realize the adjustment of the test position of the mirror assembly.

[0008] Further, the optical monitoring assembly and the high-speed camera monitoring assembly are respectively installed on the top of the housing through an omnidirectional adjustment platform to realize the adjustment of the monitoring angles of the optical monitoring assembly and the high-speed camera monitoring assembly.

[0009] Further, a slideway is installed on the top of the housing. The slideway is located directly above the mechanical loading platform and one end of it extends above the conveyor belt. A linear displacement sensor is installed on the slideway, and the linear displacement sensor is signal-connected to the central control system.

[0010] Further, the temperature control device includes a refrigeration module, a heating module, and a fan.

[0011] Further, the housing includes a bottom plate and a protective cover buckled on the bottom plate. The conveyor belt, the mechanical loading platform, the laser interferometer, and the autocollimator are all installed on the bottom plate.

[0012] Further, the protective cover is made of a transparent or semi-transparent material.

[0013] Further, two conveying windows are oppositely provided on the protective cover, and both ends of the conveyor belt communicate with the outside of the housing through the two conveying windows correspondingly.

[0014] An evaluation method using any of the above evaluation systems includes the following steps:

[0015] Step 1: Install the mirror assembly to be tested on the supporting fixture, convey it to the lower part of the automatic clamping assembly through the conveyor belt, and then the automatic clamping assembly works to grab the mirror assembly or the fixture with the mirror assembly installed thereon, and place it on the mechanical loading platform between the relatively arranged laser interferometer and autocollimator. This position is the position to be tested.

[0016] Step 2: Start the mechanical loading platform and the temperature control device to apply the preset force-thermal coupling load to simulate the stress and thermal load conditions in the actual working condition. At the same time, use the autocollimator to measure the angular deviation of the mirror assembly, use the laser interferometer to determine the displacement of the mirror assembly, use the high-speed camera monitoring assembly to capture the subtle deformation of the optical element, and use the optical detection assembly to monitor the experiment process in real time. The collected data is analyzed through the central control system to determine the influence of the force-thermal coupling effect on the stability of the mirror assembly.

[0017] Step 3: After one mirror assembly starts to be detected, repeat Steps 1 to 2 to detect the other mirror assembly.

[0018] Step 4: After the test is completed, the automatic clamping assembly operates to take out the mirror assembly and place it on the conveyor belt, and it is sent out of the housing by the conveyor belt.

[0019] The present invention has the following effects compared with the prior art:

[0020] The force-thermal coupling evaluation system of the mirror assembly based on in-situ detection of the present invention can accurately monitor the angular and position changes of one or more mirror assemblies fixed in-situ under the vibration environment simulating the actual application, and provide real-time data acquisition and analysis functions.

[0021] The force-thermal coupling evaluation system of the mirror assembly based on in-situ detection of the present invention can simulate the stress and thermal load conditions of the mirror assembly in the actual working condition by setting the mechanical loading platform and the temperature control device, realize synchronous monitoring of multi-dimensional deformation, and thus can accurately reflect the true performance of the mirror assembly under dynamic conditions.

[0022] The force-thermal coupling evaluation system of the mirror assembly based on in-situ detection of the present invention signals the conveyor belt, the mechanical loading platform, the automatic clamping assembly, the laser interferometer, the autocollimator, the optical monitoring assembly and the high-speed camera monitoring assembly to be connected to the central control system to realize automatic control and effectively improve the test repeatability.

[0023] The in-situ detection-based force-thermal coupling evaluation system for a mirror assembly of the present invention does not require the disassembly and reinstallation of the mirror assembly, thereby greatly improving the evaluation efficiency; and it avoids introducing additional errors due to minor changes during the reinstallation process, thereby preventing the subsequent use effect of the mirror assembly from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 FIG. is a schematic three-dimensional structure diagram of the in-situ detection-based force-thermal coupling evaluation system for a mirror assembly of the present invention;

[0025] Figure 2 FIG. is a schematic three-dimensional structure diagram of the internal structure of the in-situ detection-based force-thermal coupling evaluation system for a mirror assembly of the present invention (the protective cover is not shown);

[0026] Figure 3 FIG. is a schematic top view of the in-situ detection-based force-thermal coupling evaluation system for a mirror assembly of the present invention (the protective cover, optical monitoring assembly, high-speed camera monitoring assembly, automatic clamping assembly, and slideway are not shown).

[0027] In the figure:

[0028] 1. Central control system; 2. Housing; 201. Bottom plate; 202. Protective cover; 3. Conveyor belt; 4. Mechanical loading platform; 5. Automatic clamping assembly; 6. Laser interferometer; 7. Autocollimator; 8. Optical monitoring assembly; 9. High-speed camera monitoring assembly; 10. Tooling fixture; 11. Positioning device; 12. Two-dimensional moving platform; 13. Omnidirectional adjustment platform; 14. Slideway; 15. Data acquisition card; 100. Mirror assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] DETAILED DESCRIPTION OF THE EMBODIMENT 1: Combining Figures 1 to 3 This embodiment is described to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that the descriptions of directions such as "front", "rear", "left", "right", "inside", "outside", "left side", "right side", "upper part", "lower part", "top", "bottom", etc. in the present invention are all defined 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, rather than indicating or implying that the structure must be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0031] In the description of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] A force-thermal coupling evaluation system for a mirror assembly based on in-situ detection includes a central control system 1, a housing 2, and a conveyor belt 3, a mechanical loading platform 4, an automatic clamping assembly 5, a laser interferometer 6, an autocollimator 7, an optical monitoring assembly 8, and a high-speed camera monitoring assembly 9 that are arranged inside the housing 2 and are signal-connected to the central control system 1. Among them, the conveyor belt 3 and the mechanical loading platform 4 are arranged in a T shape in the horizontal direction. Both ends of the conveyor belt 3 communicate with the outside of the housing 2. The automatic clamping assembly 5 is located above the mechanical loading platform 4 and is slidably installed on the top of the housing 2 along the length direction of the mechanical loading platform 4. The laser interferometer 6 and the autocollimator 7 are arranged opposite to each other on both sides of the mechanical loading platform 4. The mirror assembly 100 is placed on the mechanical loading platform 4 between the laser interferometer 6 and the autocollimator 7 through a tooling fixture 10. The optical monitoring assembly 8 and the high-speed camera monitoring assembly 9 are both installed on the top of the housing 2 to realize real-time monitoring of the experimental process and deformation monitoring of the mirror assembly 100. Vibration is applied to the optical system assembly through the mechanical loading platform 4. A temperature control device, a temperature measuring device, and an air quality detection module that are signal-connected to the central control system 1 are also arranged inside the housing 2. A temperature environment is provided for the optical system assembly through the temperature control device, and the cleanliness of the inside of the housing is detected through the air quality detection module.

[0033] The autocollimator 7 is mainly used to measure small angle deviations. It works based on the principle of optical autocollimation, that is, light is emitted from the instrument, reflected by a mirror, and then returns to the detector inside the instrument. If there is a slight angular offset of the mirror, this offset will cause a change in the position of the returned light, and thus the angular deviation can be calculated. The specific method for calculating the angular deviation is prior art and will not be elaborated here.

[0034] The laser interferometer 6 is a device for precise measurement based on the principle of laser interference. It uses the interference phenomenon of laser beams to measure distance changes or displacements. Its basic working principle is to divide a laser beam into two beams. These two laser beams propagate along different paths and then merge to produce interference fringes. By analyzing the changes in these interference fringes, the change in the optical path difference between the two beams can be measured extremely precisely, and then the displacement of the object can be determined. The specific method for analyzing the displacement is prior art and will not be elaborated here.

[0035] Vibration is applied through the mechanical loading platform 4 to simulate the vibration experienced by the mirror assembly 100 in the actual working conditions; the temperature control device is used to simulate the thermal load conditions of the mirror assembly 100 in the actual working conditions, such as the overall ambient temperature or the local heating conditions.

[0036] The experimental process of the mirror assembly 100 is monitored in real time through the optical monitoring component 8, and the optical monitoring component 8 includes an infrared temperature measurement device and a mounting structure for mounting the infrared temperature measurement device;

[0037] The fine deformation of the mirror assembly 100 is captured through the high-speed camera monitoring component 9, and the high-speed camera monitoring component 9 includes a high-speed camera and a mounting structure for mounting the high-speed camera.

[0038] The mirror assembly 100 to be evaluated is installed on the supporting tooling fixture 10, and the specific structure of the tooling fixture 10 is the prior art and will not be described in detail here.

[0039] The force-thermal coupling evaluation system for the mirror assembly based on in-situ detection of the present invention can also be provided with a data acquisition card 15 to improve multi-channel parallel monitoring, and the signals monitored by each device (such as the laser interferometer 6, the autocollimator 7, the optical monitoring component 8 or the high-speed camera monitoring component 9) are transmitted to the central control system 1 for processing to obtain relevant detection data.

[0040] The temperature measurement device is an existing conventional device capable of realizing temperature measurement, such as a temperature sensor.

[0041] The temperature control device is non-contact.

[0042] The force-thermal coupling evaluation system for the mirror assembly based on in-situ detection of the present invention can accurately monitor the angular and position changes of one or more mirror assemblies 100 fixed in-situ under the vibration environment simulating the actual application, and provide real-time data acquisition and analysis functions.

[0043] The force-thermal coupling evaluation system for the mirror assembly based on in-situ detection of the present invention can simulate the stress and thermal load conditions of the mirror assembly 100 in the actual working conditions by setting the mechanical loading platform 4 and the temperature control device, realize multi-dimensional deformation synchronous monitoring, and thus can accurately reflect the true performance of the mirror assembly 100 under dynamic conditions;

[0044] The force-thermal coupling evaluation system for the mirror assembly based on in-situ detection of the present invention signals connects the conveyor belt 3, the mechanical loading platform 4, the automatic clamping component 5, the laser interferometer 6, the autocollimator 7, the optical monitoring component 8 and the high-speed camera monitoring component 9 to the central control system 1 to realize automatic control and effectively improve the test repeatability;

[0045] The in-situ detection-based force-thermal coupling evaluation system of the present invention for a mirror assembly does not require the disassembly and reinstallation of the mirror assembly 100, thus greatly improving the evaluation efficiency; and it avoids introducing additional errors due to minor changes during the reinstallation process, thereby preventing the impact on the subsequent use effect of the mirror assembly 100.

[0046] A positioning device 11 is further arranged inside the housing 2. The positioning device 11 is located above the conveyor belt 3 or on the side of the conveyor belt 3 away from the mechanical loading platform 4, and the positioning device 11 is arranged along the extension line direction of the mechanical loading platform 4. With such a design, by arranging the positioning device 11, it is used to detect the conveying position of the mirror assembly 100 to be tested. When the mirror assembly 100 to be tested is conveyed to the front of the positioning device 11 by the conveyor belt 3, the positioning device 11 detects the mirror assembly 100 to be tested. At this time, the conveyor belt 3 stops moving, and the automatic clamping assembly 5 works to grab the mirror assembly 100 or the tooling fixture 10 installed with the mirror assembly 100 and place it at the position to be tested.

[0047] Both the laser interferometer 6 and the autocollimator 7 are installed at the bottom of the housing 2 through a two-dimensional moving platform 12 to realize the adjustment of the test position of the mirror assembly 100. With such a design, through the two-dimensional moving platform 12, the angle adjustment of the laser interferometer 6 and the autocollimator 7 in the up-down, left-right directions can be realized, thereby realizing the adjustment of the test position of the mirror assembly 100. The two-dimensional moving platform 12 includes a longitudinal angle adjustment component and a transverse angle adjustment component. The longitudinal angle adjustment component is used to realize the up-down angle adjustment of the laser interferometer 6 or the autocollimator 7 thereon, and the transverse angle adjustment component is used to realize the left-right angle adjustment of the laser interferometer 6 or the autocollimator 7 thereon.

[0048] The longitudinal angle adjustment component and the transverse angle adjustment component are fixedly connected up and down as a whole. Specifically, the longitudinal angle adjustment component can be fixedly installed on the transverse angle adjustment component, or the transverse angle adjustment component can be fixedly installed on the longitudinal angle adjustment component. The specific structures of the longitudinal angle adjustment component and the transverse angle adjustment component are prior arts and will not be elaborated here. For example, the up-down swing can be realized by driving the first mounting plate through the output shaft of a horizontally arranged driving motor, thereby driving the equipment (such as the laser interferometer 6, the autocollimator 7 or the transverse angle adjustment component) fixedly installed on the first mounting plate to perform the up-down angle adjustment. The left-right swing can be realized by driving the second mounting plate through the output shaft of a vertically arranged driving motor, thereby driving the equipment (such as the laser interferometer 6, the autocollimator 7 or the longitudinal angle adjustment component) fixedly installed on the second mounting plate to perform the left-right angle adjustment.

[0049] The optical monitoring component 8 and the high-speed camera monitoring component 9 are respectively installed on the top of the housing 2 through the omnidirectional adjustment platform 13 to realize the monitoring angle adjustment of the optical monitoring component 8 and the high-speed camera monitoring component 9. With such a design, through the omnidirectional adjustment platform 13, the omnidirectional adjustment of the monitoring angles of the optical monitoring component 8 and the high-speed camera monitoring component 9 can be realized, that is, the circumferential rotation adjustment and the pitching position adjustment, so as to realize the comprehensive monitoring of the mirror component 100. The specific structure of the omnidirectional angle adjustment platform is prior art and will not be elaborated here.

[0050] A slideway 14 is installed on the top of the housing 2. The slideway 14 is located directly above the mechanical loading platform 4 and one end of it extends above the conveyor belt 3. A linear displacement sensor is installed on the slideway 14, and the linear displacement sensor is signal-connected to the central control system 1. With such a design, the current position of the automatic clamping component 5 is recorded in real time through the linear displacement sensor. The linear displacement sensor can be a strip-shaped photosensitive element, and a laser emission unit is installed on the automatic clamping component 5 to accurately monitor the current position. One or more positioning positions are determined in advance through the linear displacement sensor. When the automatic clamping component 5 moves to the positioning position, it stops moving and places the measured mirror component 100 it holds on the mechanical loading platform 4. The number of positioning positions is set according to needs. Laser interferometers 6 and autocollimators 7 are arranged on both sides of the mechanical loading platform 4 directly below each positioning position, so as to realize the force stability evaluation of multiple mirror components 100 through one evaluation system at the same time.

[0051] The temperature control device includes a refrigeration module, a heating module and a fan. With such a design, the temperature inside the housing 2 is adjusted through the refrigeration module and the heating module to provide a temperature environment for the mirror component 100. The fan plays a certain role in cooling. At the same time, an air quality detection module is also arranged inside the housing. In the non-working state of the detection system, the dust degree inside the housing is detected through the air quality detection module. When dust is detected, the fan is started to clean the dust to ensure the cleanliness inside the detection system.

[0052] The housing 2 includes a bottom plate 201 and a protective cover 202 buckled on the bottom plate 201. The conveyor belt 3, the mechanical loading platform 4, the laser interferometer 6 and the autocollimator 7 are all installed on the bottom plate 201. The protective cover 202 can be made of transparent, semi-transparent or opaque materials, and its main purpose is to provide a protected environment for the various detection devices inside it.

[0053] The protective cover 202 is made of transparent or semi-transparent materials, such as acrylic plates or glass, etc., which is convenient for observing the situation inside the protective cover 202.

[0054] Two conveying windows are oppositely opened on the protective cover 202, and both ends of the conveyor belt 3 are correspondingly communicated with the outside of the housing 2 through the two conveying windows.

[0055] An evaluation method using any of the above evaluation systems includes the following steps:

[0056] Step 1: Install the mirror assembly 100 to be tested on the supporting tooling fixture 10, convey it to the lower part of the automatic clamping assembly 5 through the conveyor belt 3, and then the automatic clamping assembly 5 operates to grasp the mirror assembly 100 or the tooling fixture 10 with the mirror assembly 100 installed thereon, and place it on the mechanical loading platform 4 between the relatively arranged laser interferometer 6 and autocollimator 7. This position is the position to be measured; the tooling fixture 10 with the mirror assembly 100 installed thereon is first placed at one end of the conveyor belt 3, and then conveyed by the conveyor belt 3. When it is conveyed in front of the positioning device 11, the positioning device 11 detects the tooling fixture 10, the conveyor belt 3 stops operating, and the automatic clamping assembly 5 operates to place the mirror assembly 100 along the slideway 14 to the position to be measured. This position to be measured can be determined in advance by the linear displacement sensor on the slideway 14 and can be one or more positions to be measured.

[0057] Step 2: Start the mechanical loading platform 4 and the temperature control device to apply the preset force-thermal coupling load to simulate the stress and thermal load conditions in the actual working condition. At the same time, use the autocollimator 7 to measure the angular deviation of the mirror assembly 100, use the laser interferometer 6 to determine the displacement of the mirror assembly 100, the high-speed camera monitoring assembly 9 captures the subtle deformation of the optical element, and the optical detection assembly monitors the experimental process in real time. The collected data is analyzed by the central control system 1 to determine the influence of the force-thermal coupling effect on the stability of the mirror assembly 100;

[0058] Step 3: After one mirror assembly 100 starts to be detected, repeat Steps 1 to 2 to detect another mirror assembly 100;

[0059] Step 4: After the test is completed, the automatic clamping assembly 5 operates to take out the mirror assembly 100 and place it on the conveyor belt 3, and it is sent out of the housing 2 by the conveyor belt 3.

[0060] After the detection is completed, the signal is transmitted to the central control system 1 through the data acquisition card 15. The central control system 1 controls the movement of the two-dimensional moving platform 12 to adjust the centers of the lens of the mirror assembly 100, the center of the laser interferometer 6, and the center of the autocollimator 7 to coincide, and perform the calibration test of the initial position. Then, the actual working condition of the mechanical vibration is simulated by force, and a force load is applied. The vibration quantity is monitored in real time, the vibration stability of its mirror assembly 100 is detected, and the high-speed camera monitoring assembly 9 is used to monitor the subtle and slow deformation process. The optical monitoring assembly 8 is used to monitor the experimental process in real time (both the high-speed camera monitoring assembly 9 and the optical monitoring assembly 8 can roll and pitch to perform 360° comprehensive monitoring). After a mirror assembly 100 is detected, the central control system 1 controls the automatic clamping assembly 5 to place the detected mirror assembly 100 on the conveyor belt 3. After the positioning device 11 detects the mirror assembly 100, the conveyor belt 3 is started to send out the mirror assembly 100, and then the automatic clamping assembly 5 sends out another assembly. An electrical connection interface for an aviation plug is opened on the housing 2 to facilitate internal and external connections.

[0061] As described above, it is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A force-thermal coupling evaluation system for a mirror assembly based on in-situ detection, characterized in that: It includes a central control system (1), a housing (2), and a conveyor belt (3), a mechanical loading platform (4), an automatic clamping assembly (5), a laser interferometer (6), an autocollimator (7), an optical monitoring assembly (8), and a high-speed camera monitoring assembly (9) which are arranged inside the housing (2) and are signal-connected to the central control system (1). Among them, the conveyor belt (3) and the mechanical loading platform (4) are arranged in a T shape in the horizontal direction. Both ends of the conveyor belt (3) communicate with the outside of the housing (2). The automatic clamping assembly (5) is located above the mechanical loading platform (4) and is slidably installed on the top of the housing (2) along the length direction of the mechanical loading platform (4). The laser interferometer (6) and the autocollimator (7) are arranged oppositely on both sides of the mechanical loading platform (4). The mirror assembly (100) is placed on the mechanical loading platform (4) between the laser interferometer (6) and the autocollimator (7) through a tooling fixture (10). The optical monitoring assembly (8) and the high-speed camera monitoring assembly (9) are both installed on the top of the housing (2) to realize real-time monitoring of the experimental process and deformation monitoring of the mirror assembly (100). The mechanical loading platform (4) applies vibration to the optical system assembly. A temperature control device, a temperature measuring device, and an air quality detection module which are signal-connected to the central control system (1) are also arranged inside the housing (2). The temperature control device provides a temperature environment for the optical system assembly, and the air quality detection module detects the cleanliness inside the housing.

2. The force-thermal coupling evaluation system for a mirror assembly based on in-situ detection according to claim 1, wherein: A positioning device (11) is also arranged inside the housing (2). The positioning device (11) is located above the conveyor belt (3) or on the side of the conveyor belt (3) away from the mechanical loading platform (4), and the positioning device (11) is arranged along the extension line direction of the mechanical loading platform (4).

3. A force-thermal coupling evaluation system for a mirror assembly based on in-situ detection according to claim 1, characterized in that: Both the laser interferometer (6) and the autocollimator (7) are installed on the bottom of the housing (2) through a two-dimensional moving platform (12) to realize the adjustment of the test position of the mirror assembly (100).

4. A force-thermal coupling evaluation system for a mirror assembly based on in-situ detection according to claim 1, characterized in that: The optical monitoring assembly (8) and the high-speed camera monitoring assembly (9) are respectively installed on the top of the housing (2) through an omnidirectional adjustment platform (13) to realize the adjustment of the monitoring angles of the optical monitoring assembly (8) and the high-speed camera monitoring assembly (9).

5. The force-thermal coupling evaluation system for a mirror assembly based on in-situ detection according to claim 1, characterized in that: A slideway (14) is installed on the top of the housing (2). The slideway (14) is located directly above the mechanical loading platform (4) and one end of it extends above the conveyor belt (3). A linear displacement sensor is installed on the slideway (14), and the linear displacement sensor is signal-connected to the central control system (1).

6. The force-thermal coupling evaluation system of a mirror assembly based on in-situ detection according to claim 1, wherein: The temperature control device includes a refrigeration module, a heating module, and a fan.

7. A force-thermal coupling evaluation system for a mirror assembly based on in-situ detection according to claim 1, characterized in that: The housing (2) includes a bottom plate (201) and a protective cover (202) buckled on the bottom plate (201). The conveyor belt (3), the mechanical loading platform (4), the laser interferometer (6), and the autocollimator (7) are all installed on the bottom plate (201).

8. A force-thermal coupling evaluation system for a mirror assembly based on in-situ detection according to claim 7, characterized in that: The protective cover (202) is made of a transparent or semi-transparent material.

9. A force-thermal coupling evaluation system for a mirror assembly based on in-situ detection according to claim 7, characterized in that: Two conveying windows are oppositely opened on the protective cover (202). Both ends of the conveyor belt (3) correspondingly communicate with the outside of the housing (2) through the two conveying windows.

10. A method for evaluating the force-thermal coupling of a mirror assembly based on in-situ detection, characterized in that: Using the in-situ detection-based force-thermal coupling evaluation system for a mirror assembly according to any one of the above claims 1 to 9, the method includes the following steps: Step 1: Install the mirror assembly (100) to be tested on the supporting tooling fixture (10), convey it to the lower part of the automatic clamping assembly (5) through the conveyor belt (3), and then the automatic clamping assembly (5) operates to grasp the mirror assembly (100) or the tooling fixture (10) installed with the mirror assembly (100), and place it on the mechanical loading platform (4) between the relatively arranged laser interferometer (6) and autocollimator (7). This position is the position to be measured. Step 2: Start the mechanical loading platform (4) and the temperature control device to apply the preset force-thermal coupling load to simulate the stress and thermal load conditions in the actual working condition. At the same time, use the autocollimator (7) to measure the angular deviation of the mirror assembly (100), use the laser interferometer (6) to determine the displacement of the mirror assembly (100), the high-speed camera monitoring assembly (9) captures the subtle deformation of the optical element, the optical detection assembly monitors the experiment process in real time, and the collected data is analyzed by the central control system (1) to determine the influence of the force-thermal coupling effect on the stability of the mirror assembly (100). Step 3: After one mirror assembly (100) starts to be detected, repeat Steps 1 to 2 to detect another mirror assembly (100). Step 4: After the test is completed, the automatic clamping assembly (5) operates to take out the mirror assembly (100) and place it on the conveyor belt (3), and the conveyor belt (3) sends it out of the housing (2).

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