An adaptive wave absorption test device and method under hypergravity field

Abstract

This invention discloses an adaptive wave-absorbing experimental device and method under a hypergravity field. The device includes: a model box with a top plate and a wave-absorbing mounting base plate installed on the underside of the top plate; a distance adjustment module including a first ball screw, a linear motion mechanism, and a first grid plate, wherein the linear motion mechanism is mounted on the wave-absorbing mounting base plate, and the first ball screw is used to move the first grid plate in the wave propagation direction through the linear motion mechanism to adjust the distance between the first grid plate and the side wall of the model box; an aperture ratio adjustment module including a second ball screw and a second grid plate, wherein the second ball screw is mounted on the first grid plate and is used to control the movement of the second grid plate perpendicular to the wave propagation direction to adjust the aperture ratio of the grid plate formed by the second grid plate and the first grid plate; and a control system for acquiring the wave height of the reflected wave and controlling the operation of the distance adjustment module and the aperture ratio adjustment module according to the wave height.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to an adaptive wave absorption test device and method under hypergravity. Background Technology

[0002] During their service life, marine foundations are subjected to long-term wave loads. Waves not only generate cyclic loads on marine structures but also interact directly with the seabed, leading to increased excess pore pressure and reduced load-bearing capacity. This poses a significant threat to the safe and stable operation of the foundations, causing economic losses and environmental damage. Accurately assessing the impact of ocean waves on the foundations of offshore structures is therefore urgent and important. Centrifuge model tests, with their advantages of scale-down and time-lapse capabilities and clearly defined similarity relationships, are an important means of simulating and studying the interaction between waves, the seabed, and marine engineering structures.

[0003] Due to space limitations in the basket of the arm-type centrifuge, the length of the hypergravity wave-generating device is also limited. When the generated waves encounter the side wall of the model box, they produce reflected waves. The reflected waves superimpose with the target waves generated by the wave-generating plate, which changes the waveform, wave height, and other parameters of the target waves. As a result, the waveform and wave height of the target waves generated by the wave-generating machine cannot meet the experimental requirements.

[0004] The use of wave-absorbing measures to reduce the interference of reflected waves is widely adopted. Existing wave-absorbing schemes for hypergravity wave-generating devices generally employ the installation of upright grid-type wave-absorbing plates at fixed positions near the wave-absorbing side. Subsequently, Zhejiang University and the Institute of Overall Engineering of the China Academy of Engineering Physics improved the wave-absorbing design method, designing a wave-absorbing structure with adjustable grid aperture ratio and wave-absorbing plate distance. Although the above-mentioned new wave-absorbing method solves the problem of wave-absorbing structures being able to adapt to different wave parameters, these methods have the following problems: 1) The installation of the wave-absorbing module requires openings in the side wall of the model box, which poses a significant waterproofing problem under hypergravity. This module can only be used on the model box and cannot be applied to other model boxes; 2) The aperture ratio and distance of the grid plate from the side wall of the model box can only be preset and require manual adjustment of the grid aperture ratio and distance parameters, and cannot be automatically adjusted according to the actual wave reflectivity.

[0005] To address the aforementioned issues, it is both necessary and urgent to develop an adaptive wave absorption system that can be applied to different model boxes, provide real-time feedback on the wave absorption effect, and make automatic adjustments. Summary of the Invention

[0006] The purpose of this application is to provide an adaptive wave absorption test device and method under a hypergravity field, so as to solve the technical problems existing in the related technology, such as the device being unsuitable for different model boxes, prominent waterproofing issues, and the inability to automatically adjust the opening ratio of the grid plate and the distance between the grid plate and the model box in real time according to the actual reflected waves to achieve the best wave absorption effect.

[0007] This application provides an adaptive wave absorption experimental device under a hypergravity field, comprising:

[0008] A model box, wherein a top plate is provided on the top of the model box, and a wave-absorbing mounting base plate is installed on the lower side of the top plate;

[0009] The distance adjustment module includes a first ball screw, a linear motion mechanism, and a first grid plate. The linear motion mechanism is mounted on the wave-absorbing mounting base plate. The first ball screw is used to enable the first grid plate to move in the wave travel direction through the linear motion mechanism, so as to adjust the distance between the first grid plate and the side wall of the model box.

[0010] The aperture ratio adjustment module includes a second ball screw and a second grid plate. The second ball screw is mounted on the first grid plate and is used to control the movement of the second grid plate perpendicular to the wave travel direction, so as to adjust the aperture ratio of the grid plate formed by the second grid plate and the first grid plate.

[0011] The control system is used to acquire the wave height of the reflected wave, generate an adjustment signal based on the wave height, and send it to the distance adjustment module and the aperture ratio adjustment module to enable the linear motion mechanism and the ball screw to work.

[0012] Furthermore, the distance adjustment module also includes a first servo motor and a drag chain guide rail;

[0013] The first servo motor is fixed to the microwave absorbing mounting base plate. The input end of the first servo motor is connected to the first output end of the control system. The output end of the first servo motor is connected to the input end of the first ball screw. The output end of the first ball screw is connected to the first grid plate. The control line of the first servo motor is connected to the control system through the drag chain guide rail.

[0014] Furthermore, one end of the first ball screw is connected to the output end of the first servo motor, and the other end is fixedly connected to the screw end mounting base. The nut of the first ball screw is fixedly connected to the first grid plate.

[0015] Furthermore, it also includes a first mounting base fixed to the microwave absorbing mounting base plate, the first servo motor is mounted on the first mounting base, and one end of the first ball screw passes through the bearing of the first mounting base and is fixed to the first servo motor coupling.

[0016] Furthermore, the linear motion mechanism includes a first guide rail slider assembly and a second guide rail slider assembly;

[0017] The first guide rail slider assembly includes a first linear guide rail and a first guide rail block and a second guide rail block fixed at both ends of the first linear guide rail. The first linear guide rail is provided with a first guide rail slider and a second guide rail slider.

[0018] The second guide rail slider assembly includes a second linear guide rail and a third guide rail block and a fourth guide rail block fixed at both ends of the second linear guide rail. The second linear guide rail is provided with a third guide rail slider and a fourth guide rail slider.

[0019] One end of the top of the first grid plate is fixedly connected to the first guide rail slider and the second guide rail slider, and the other end is fixedly connected to the third guide rail slider and the fourth guide rail slider.

[0020] Furthermore, the aperture ratio adjustment module also includes a second servo motor, the output end of which is connected to the input end of the second ball screw, and the output end of the second ball screw is connected to the second grid plate; the control line of the second servo motor is connected to the control system through the drag chain guide rail.

[0021] Furthermore, one end of the second ball screw is connected to the output end of the second servo motor, and the other end is fixedly connected to the first grid plate. The nut of the second ball screw is fixedly connected to the second grid plate.

[0022] Furthermore, the control system includes a computer, a reflected wave height acquisition device, and a reflected wave height sensor. The reflected wave height sensor is fixed in front of the first grid plate to acquire the wave height of the reflected wave, and the wave height is transmitted to the computer through the reflected wave height acquisition device.

[0023] Furthermore, the control system also includes a first servo motor controller and a second servo motor controller. The control commands from the computer are transmitted to the linear motion mechanism through the first servo motor controller and to the second ball screw through the second servo motor controller.

[0024] This application also provides an adaptive absorption test method under a hypergravity field. Based on the above-described apparatus, the method includes:

[0025] (1) Obtain the acceptable maximum reflectivity and begin wave generation;

[0026] (2) The incident wave travels in the opposite direction of the wave travel direction and forms a reflected wave after encountering the grid plate. The control system collects the wave height of the reflected wave.

[0027] (3) The control system calculates the reflectivity based on the wave height of the reflected wave using Fourier transform, and determines whether the reflectivity meets the requirement of the maximum acceptable reflectivity.

[0028] (4) If the reflectivity meets the requirements, repeat steps (2) and (3). If the reflectivity does not meet the requirements, the control system sends a command to the distance adjustment module to control the first grid plate and the second grid plate to move left and right along the wave travel direction. During this process, the wave height of the reflected wave is monitored in real time. After finding the position with the smallest reflected wave, the distance adjustment module is controlled to stop. A command is sent to the aperture ratio adjustment module to make the second grid plate move left and right perpendicular to the wave travel direction under the drive of the second ball screw until the aperture ratio of the grid plate with the smallest wave height of the reflected wave is found, and the aperture ratio adjustment module is controlled to stop.

[0029] (5) Monitor wave reflectivity in real time. If the reflectivity changes, return to step (3).

[0030] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0031] 1) Modular design method: The entire wave absorbing device is integrated into a mounting base plate, which is then fixed to the upper side of the model box. This overcomes the problems of needing side wall openings for the model box, only being able to use one model box with one set of devices, and waterproofing. As a result, it achieves the technical effect of being applicable to different model boxes, eliminating the need for openings in the model box, and eliminating waterproofing issues.

[0032] 2) The technology of adjusting the opening ratio of the wave-absorbing plate and the distance between the wave-absorbing plate and the side wall of the model box by using the actual reflectivity of the waves is adopted. Instead of determining the operating parameters of the wave-absorbing device based on empirical formulas, it overcomes the technical problem that the wave-absorbing device cannot be adjusted according to the actual wave reflectivity to achieve the best wave absorption effect. Thus, the technology of the wave-absorbing device can be adjusted in real time according to the actual wave reflectivity to achieve the best wave absorption rate.

[0033] 3) The technology of real-time monitoring of wave reflectivity and automatic control of the operating parameters of the wave absorbing device by computer was adopted, which overcame the technical problems of needing to manually adjust the operating parameters of the wave absorbing device and being unable to adjust the operating parameters of the wave absorbing device in real time according to the actual wave reflectivity. Thus, the technical effect of the wave absorbing device operating in the best wave absorbing state throughout the entire test process was achieved.

[0034] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0036] Figure 1 This is a control principle diagram of an adaptive wave absorption test device under hypergravity field, according to an exemplary embodiment.

[0037] Figure 2 This is a left and right isometric view of an adaptive wave absorption test device under hypergravity field according to an exemplary embodiment.

[0038] Figure 3 This is a bottom view of an adaptive wave absorption experimental device under hypergravity field, according to an exemplary embodiment.

[0039] Figure 4 This is a left view of an adaptive wave absorption experimental device under hypergravity field according to an exemplary embodiment.

[0040] Figure 5 This is a schematic diagram illustrating an adaptive wave absorption test method under a hypergravity field according to an exemplary embodiment.

[0041] In the diagram: 1. Computer; 2-1. First servo motor controller; 2-2. Second servo motor controller; 3. Reflected wave height data acquisition instrument; 4. Reflected wave height sensor; 5. Model box; 6. Top plate of the model box; 7. Mounting base plate of the wave absorption system; 8. Cable chain guide rail; 9-1. First linear guide rail; 9-2. Second linear guide rail; 9-3. First guide rail stop; 9-4. Second guide rail stop; 9-5. Third guide rail stop; 9-6. Fourth guide rail stop; 9-7. First guide rail slider; 9-8. Second guide rail slider; 9-9. Third guide rail slider; 9-10. Fourth guide rail slider; 9-11. 9-12. First guide rail slider connector; 9-13. Second guide rail slider connector; 9-14. Third guide rail slider connector; 9-15. Fourth guide rail slider connector; 9-16. First servo motor; 9-17. First servo motor coupling; 9-18. First ball screw; 9-19. First grid plate connector; 9-20. Screw end mounting base; 9-21. First grid plate; 9-22. Second grid plate; 10-1. Second servo motor; 10-2. Second servo motor support; 10-3. Second mounting base; 10-4. Second ball screw. Detailed Implementation

[0042] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0043] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0044] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0045] The control principle diagram of this invention is as follows: Figure 1 As shown, the local structure is as follows Figure 2 , Figure 3 and Figure 4 As shown. Figures 1-4 As shown, the adaptive wave-absorbing experimental device under a hypergravity field provided in this application includes: a model box 5, with a model box top plate 6 on the top of the model box 5, and a wave-absorbing mounting base plate installed on the lower side of the model box top plate 6; a distance control module, including a first ball screw 9-18, a linear motion mechanism, and a first grid plate 9-21, the linear motion mechanism being installed on the wave-absorbing mounting base plate, the first ball screw 9-18 being used to enable the first grid plate 9-21 to move in the wave travel direction through the linear motion mechanism, so as to adjust the distance between the first grid plate 9-21 and the side of the model box 5. The distance between the walls; the aperture ratio control module, including a second ball screw 10-4 and a second grid plate 9-22, the second ball screw 10-4 being mounted on the wave-absorbing mounting base plate, is used to control the movement of the second grid plate 9-22 perpendicular to the wave travel direction, so as to adjust the aperture ratio of the grid plate formed by the second grid plate 9-22 and the first grid plate 9-21; the control system, the control system being used to collect the wave height of the reflected wave, generate an adjustment signal based on the wave height and send it to the distance adjustment module and the aperture ratio adjustment module accordingly, so that the linear motion mechanism and the ball screw can work.

[0046] Specifically, the side wall distance control module of the grid plate model box 5 further includes a first servo motor 9-15 and a drag chain guide rail 8; the first servo motor 9-15 is fixedly connected to the wave-absorbing mounting base plate, the input end of the first servo motor 9-15 is connected to the first output end of the control system, the output end of the first servo motor 9-15 is connected to the input end of the first ball screw 9-18, and the output end of the first ball screw 9-18 is connected to the first grid plate 9-21; the control line of the first servo motor 9-15 is connected to the control system through the drag chain guide rail 8.

[0047] Specifically, one end of the first ball screw 9-18 is connected to the output end of the first servo motor 9-15, and the other end is fixedly connected to the screw end mounting base 9-20. The nut of the first ball screw 9-18 is fixedly connected to the first grid plate 9-21.

[0048] In one embodiment, this application provides a first mounting base 9-16 fixedly connected to the microwave absorbing mounting base plate, a first servo motor 9-155 fixedly connected to the first mounting base 9-16, the shaft of the first servo motor 9-155 fixedly connected to a first servo motor coupling 9-17, one end of a first ball screw 9-18 passing through the bearing of the first mounting base 9-16 and fixedly connected to the first servo motor coupling 9-17, the other end of the first ball screw 9-18 fixedly connected to the screw end mounting base 9-20, the nut of the ball screw fixedly connected to the first grid plate connector 9-19, and the first grid plate connector 9-19 fixedly connected to the first grid plate 9-21.

[0049] Specifically, the linear motion mechanism includes a first guide rail slider 9-7 assembly and a second guide rail slider 9-8 assembly. The first guide rail slider 9-7 assembly includes a first linear guide rail 9-1 and a first guide rail stop 9-3 and a second guide rail stop 9-4 fixed at both ends of the first linear guide rail 9-1. The first linear guide rail 9-1 is provided with a first guide rail slider 9-7 and a second guide rail slider 9-8. The second guide rail slider 9-8 assembly includes a second linear guide rail 9-2 and a third guide rail stop 9-5 and a fourth guide rail stop 9-6 fixed at both ends of the second linear guide rail 9-2. The second linear guide rail 9-2 is provided with a third guide rail slider 9-9 and a fourth guide rail slider 9-10. One end of the top of the first grid plate 9-21 is fixedly connected to the first guide rail slider 9-7 and the second guide rail slider 9-8, and the other end is fixedly connected to the third guide rail slider 9-9 and the fourth guide rail slider 9-10. Two sliders are provided on each guide rail to ensure safety and deformation requirements under hypergravity.

[0050] In specific implementation, the first linear guide rail 9-1 and the second linear guide rail 9-2 are respectively fixedly connected to the microwave absorbing mounting base plate, and the first guide rail block 9-3, the second guide rail block 9-4, the third guide rail block 9-5, and the fourth guide rail block 9-6 are used to limit the movement of the guide rail slider.

[0051] In one embodiment, the first grid plate 9-21 is connected to the first guide rail slider 9-7 via a first guide rail slider connector 9-11, fixedly connected to the second guide rail slider 9-8 via a second guide rail slider connector 9-12, connected to the third guide rail slider 9-9 via a third guide rail slider connector 9-13, and fixedly connected to the fourth guide rail slider 9-10 via a fourth guide rail slider connector 9-14.

[0052] The first servo motor 9-15 drives the first ball screw 9-18 to rotate via the first servo motor coupling 9-17. The first ball screw 9-18 drives its nut to move left and right in the X direction. The nut of the first ball screw 9-18 then drives the first grid plate 9-21 and the second grid plate 9-22, which are fixed to it, to move left and right in the X direction, thereby controlling the distance between the grid plate and the side wall of the model box 5.

[0053] Specifically, the grid plate aperture ratio control module may further include a second servo motor 10-1, the output end of the second servo motor 10-1 is connected to the input end of the second ball screw 10-4, and the output end of the second ball screw 10-4 is connected to the second grid plate 9-22; the control line of the second servo motor 10-1 is connected to the control system through the drag chain guide rail 8.

[0054] Specifically, one end of the second ball screw 10-4 is connected to the output end of the second servo motor 10-1, and the other end is fixedly connected to the wave-absorbing mounting base plate. The nut of the second ball screw 10-4 is fixedly connected to the second grid plate 9-22.

[0055] In a specific implementation, the grid plate opening ratio control module may further include a second servo motor 10-1 support, a second mounting base 10-3, the second mounting base 10-3 being fixedly connected to the first grid plate 9-21, the second servo motor 10-1 being fixedly connected to the second mounting base 10-3, a second ball screw 10-4 being fixedly connected to the servo motor, the second ball screw 10-4 being mounted on the second mounting base 10-3, and the nut of the second ball screw 10-4 being fixedly connected to the second grid plate 9-22. The second servo motor 10-1 support is fixedly connected to the first grid plate 9-21 below the second servo motor 10-1.

[0056] The second servo motor 10-1 drives the second ball screw 10-4 to rotate. The rotation of the second ball screw 10-4 drives the screw nut to move left and right in the Y direction. The nut of the second ball screw 10-4 drives the second grid plate 9-22, which is fixed to it. In this way, the size of the grid holes formed by the second grid plate 9-22 and the first grid plate 9-21 can be controlled by the movement of the second grid plate 9-22.

[0057] Specifically, the control system includes a computer 1, a reflected wave height acquisition instrument, and a reflected wave height sensor 4. The reflected wave height sensor 4 is fixed in front of the first grid plate 9-21 to acquire the wave height of the reflected wave, and the wave height is transmitted to the computer 1 through the reflected wave height acquisition instrument.

[0058] Specifically, the control system further includes a first servo motor controller 2-1 and a second servo motor controller 2-2. The control commands of the computer 1 are transmitted to the linear motion mechanism through the first servo motor controller 2-1 and to the second ball screw 10-4 through the second servo motor controller 2-2.

[0059] In the specific implementation, the control line of the first servo motor 9-15 passes through the drag chain guide rail 8 and is connected to the first servo motor controller 2-1. The control line of the second servo motor 10-1 passes through the drag chain guide rail 8 and is connected to the second servo motor controller 2-2. The first servo motor controller 2-1 and the second servo motor controller 2-2 are respectively connected to the computer 1.

[0060] Based on the above-mentioned device, this application also proposes an adaptive wave absorption test method under a hypergravity field, as follows (e.g.) Figure 5 ):

[0061] (1) Input the maximum acceptable reflectivity and start wave generation.

[0062] (2) The incident wave travels in the opposite direction of the X-axis and forms a reflected wave after encountering the grid plate. The reflected wave height acquisition instrument collects the size of the reflected wave through the reflected wave height sensor 4 and feeds the data back to the computer 1.

[0063] (3) Computer 1 performs Fourier transform on the reflected wave parameters to calculate the reflectivity and determines whether the reflectivity meets the requirements.

[0064] (4) If the reflectivity meets the requirements, repeat steps (2) and (3). If the reflectivity does not meet the requirements, computer 1 sends a command to the first servo motor controller 2-1. The first servo motor controller 2-1 controls the first servo motor 9-15 to run, and then controls the first grid plate 9-21 and the second grid plate 9-22 to move left and right along the X direction. During this process, the reflected wave height acquisition instrument monitors the size of the reflected wave in real time and feeds the data back to computer 1. After finding the position with the smallest reflected wave, computer 1 issues a command to stop the first servo motor 9-15. After finding the optimal position of the grid plate in the X direction, computer 1 issues a command to the second servo motor controller 2-2. The second servo motor controller 2-2 controls the second servo motor 10-1 to run. The second grid plate 9-22 moves left and right in the Y direction under the drive of the second ball screw 10-4. The reflected wave height acquisition instrument feeds the wave height data back to computer 1 until the grid plate with the smallest reflected wave is found. Then computer 1 issues a command to stop the second servo motor 10-1.

[0065] (5) Computer 1 monitors wave reflectivity in real time. If it changes, it re-enters the judgment process in step (3).

[0066] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0067] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An adaptive wave absorption experimental device under a hypergravity field, characterized in that, include: A model box, wherein a top plate is provided on the top of the model box, and a wave-absorbing mounting base plate is installed on the lower side of the top plate; The distance adjustment module includes a first ball screw, a linear motion mechanism, and a first grid plate. The linear motion mechanism is mounted on the wave-absorbing mounting base plate. The first ball screw is used to enable the first grid plate to move in the wave travel direction through the linear motion mechanism, so as to adjust the distance between the first grid plate and the side wall of the model box. The aperture ratio adjustment module includes a second ball screw and a second grid plate. The second ball screw is mounted on the first grid plate and is used to control the movement of the second grid plate perpendicular to the wave travel direction, so as to adjust the aperture ratio of the grid plate formed by the second grid plate and the first grid plate. The control system is used to acquire the wave height of the reflected wave, generate an adjustment signal based on the wave height, and send it to the distance adjustment module and the aperture ratio adjustment module to enable the linear motion mechanism and the ball screw to work. The control system includes a computer, a reflected wave height acquisition device, and a reflected wave height sensor. The reflected wave height sensor is fixed in front of the first grid plate to acquire the wave height of the reflected wave, and the wave height is transmitted to the computer through the reflected wave height acquisition device.

2. The apparatus according to claim 1, characterized in that, The distance adjustment module also includes a first servo motor and a drag chain guide rail; The first servo motor is fixed to the microwave absorbing mounting base plate. The input end of the first servo motor is connected to the first output end of the control system. The output end of the first servo motor is connected to the input end of the first ball screw. The output end of the first ball screw is connected to the first grid plate. The control line of the first servo motor is connected to the control system through the drag chain guide rail.

3. The apparatus according to claim 2, characterized in that, One end of the first ball screw is connected to the output end of the first servo motor, and the other end is fixedly connected to the screw end mounting base. The nut of the first ball screw is fixedly connected to the first grid plate.

4. The apparatus according to claim 3, characterized in that, It also includes a first mounting base fixed to the microwave absorbing mounting base plate, the first servo motor is mounted on the first mounting base, and one end of the first ball screw passes through the bearing of the first mounting base and is fixed to the first servo motor coupling.

5. The apparatus according to claim 1, characterized in that, The linear motion mechanism includes a first guide rail slider assembly and a second guide rail slider assembly; The first guide rail slider assembly includes a first linear guide rail and a first guide rail block and a second guide rail block fixed at both ends of the first linear guide rail. The first linear guide rail is provided with a first guide rail slider and a second guide rail slider. The second guide rail slider assembly includes a second linear guide rail and a third guide rail block and a fourth guide rail block fixed at both ends of the second linear guide rail. The second linear guide rail is provided with a third guide rail slider and a fourth guide rail slider. One end of the top of the first grid plate is fixedly connected to the first guide rail slider and the second guide rail slider, and the other end is fixedly connected to the third guide rail slider and the fourth guide rail slider.

6. The apparatus according to claim 2, characterized in that, The aperture ratio adjustment module also includes a second servo motor, the output end of which is connected to the input end of the second ball screw, and the output end of the second ball screw is connected to the second grid plate; the control line of the second servo motor is connected to the control system through the drag chain guide rail.

7. The apparatus according to claim 6, characterized in that, One end of the second ball screw is connected to the output end of the second servo motor, and the other end is fixedly connected to the first grid plate. The nut of the second ball screw is fixedly connected to the second grid plate.

8. The apparatus according to claim 7, characterized in that, The control system further includes a first servo motor controller and a second servo motor controller. The control commands from the computer are transmitted to the linear motion mechanism through the first servo motor controller and to the second ball screw through the second servo motor controller.

9. An adaptive wave absorption test method under a hypergravity field, characterized in that, Based on the apparatus according to any one of claims 1-8, the method comprises: (1) Obtain the acceptable maximum reflectivity and begin wave generation; (2) The incident wave travels in the opposite direction to the wave travel direction and forms a reflected wave after encountering the grid plate. The control system collects the wave height of the reflected wave. (3) The control system calculates the reflectivity based on the wave height of the reflected wave by Fourier transform and determines whether the reflectivity meets the requirement of the maximum acceptable reflectivity. (4) If the reflectivity meets the requirements, repeat steps (2) and (3). If the reflectivity does not meet the requirements, the control system sends a command to the distance adjustment module to control the first grid plate and the second grid plate to move left and right along the wave travel direction. During this process, the wave height of the reflected wave is monitored in real time. After finding the position with the smallest reflected wave, the distance adjustment module is controlled to stop. A command is sent to the aperture ratio adjustment module to make the second grid plate move left and right perpendicular to the wave travel direction under the drive of the second ball screw until the aperture ratio of the grid plate with the smallest wave height of the reflected wave is found, and the aperture ratio adjustment module is controlled to stop. (5) Monitor wave reflectivity in real time. If the reflectivity changes, return to step (3).

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