Self-adaptive wave absorption test device and method under high gravity field

Abstract

The invention discloses a self-adaptive wave absorption test device and method under a high gravity field, and the device comprises a model box, the top of the model box is provided with a model box top plate, and the lower side of the model box top plate is provided with a wave absorption installation bottom plate; the distance adjusting module comprises a first ball screw, a linear motion mechanism and a first grid plate, the linear motion mechanism is mounted on the wave absorbing mounting bottom plate, and the first ball screw is used for enabling the first grid plate to move in the wave advancing 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 adjusting module comprises a second ball screw and a second grid plate, and the second ball screw is installed on the first grid plate and used for controlling the second grid plate to move in the direction perpendicular to the wave advancing direction so as to adjust the aperture ratio of the grid plate formed by the second grid plate and the first grid plate; and the control system is used for collecting the wave height of the reflected wave and controlling the distance adjusting module and the aperture ratio adjusting module to work according to the wave height.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to an adaptive wave absorbing test device and method under a hypergravity field. Background Art

[0002] During the service life, the marine foundation is subjected to long-term wave loads. Waves not only generate cyclic loads on the marine structures, but also directly interact with the seabed, causing the excess pore pressure to rise and reducing its bearing capacity, which poses a major threat to the safe and stable service of the foundation, causing economic losses and environmental damage. It is urgent and important to accurately assess the impact of ocean waves on the foundation of offshore structures. The ultra-gravity centrifuge model test has the advantages of scale reduction, time reduction and clear similarity relationship, and is an important means to simulate and study the interaction between waves, seabed and marine engineering structures.

[0003] Due to the space limitation of the hanging basket of the arm centrifuge, the length of the supergravity wave-making device is limited. When the traveling wave encounters the side wall of the model box, a reflected wave will be generated. The reflected wave will be superimposed on the target wave generated by the wave-making plate, which will change the waveform, wave height and other parameters of the target wave, making the waveform and wave height and other index parameters of the target wave generated by the wave-making machine unable to meet the test requirements.

[0004] The use of absorbing measures to reduce the interference of wave reflection waves is widely adopted. The existing absorbing scheme of supergravity wave-making devices generally adopts the installation of upright grid absorbing plates at a fixed position close to the absorbing side. Subsequently, Zhejiang University and the Institute of General Engineering of the China Academy of Engineering Physics improved the absorbing design method and designed an absorbing structure with adjustable grid opening rate and absorbing plate distance. Although the above new absorbing methods solve the problem that the absorbing structure can adapt to different wave parameters, these methods have the following problems: 1) The installation of the absorbing module requires opening holes in the side wall of the model box, and the waterproof problem is prominent in the supergravity field. The module can only be used on the model box and cannot be applied to other model boxes; 2) The opening rate of the grid plate and the distance from the side wall of the model box can only be set in advance, and the grid opening rate and distance parameters need to be adjusted manually, and cannot be automatically adjusted according to the actual wave reflectivity.

[0005] In view of the above problems, it is necessary and urgent to develop an adaptive absorbing system that can be applied to different model boxes, provide real-time feedback on the absorbing effect and make automatic adjustments. Summary of the invention

[0006] The purpose of the embodiments of the present 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 art that the device cannot be applied to different model boxes, has prominent waterproof problems, and cannot automatically adjust the grid plate opening rate 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] The present application provides an adaptive wave absorbing test device in a hypergravity field, comprising:

[0008] A model box, wherein a model box top plate is arranged on the top of the model box, and a wave absorbing installation bottom plate is installed on the lower side of the model box top plate;

[0009] A distance adjustment module, comprising 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 enable the first grid plate to move in the wave traveling 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] an aperture ratio adjustment module, comprising 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 in a direction 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] A control system is used to collect the wave height of the reflected wave, generate an adjustment signal according to 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.

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

[0013] The first servo motor is fixedly connected to the wave-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, and 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 a screw end mounting base, and a nut of the first ball screw is fixedly connected to the first grid plate.

[0015] Furthermore, it also includes a first mounting base fixedly connected to the wave absorbing mounting base, the first servo motor is installed on the first mounting base, and one end of the first ball screw passes through the bearing of the first mounting base and is fixedly connected to the first servo motor coupling.

[0016] Further, 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, and 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, and 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 opening rate adjustment module also includes a second servo motor, the output end of the second servo motor 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, and a 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 collector and a reflected wave height sensor. The reflected wave height sensor is fixed in front of the first grid plate to collect the wave height of the reflected wave. The wave height is transmitted to the computer through the reflected wave height collector.

[0023] Furthermore, the control system further comprises a first servo motor controller and a second servo motor controller, and the control instructions of the computer are transmitted to the linear motion mechanism through the first servo motor controller, and are transmitted to the second ball screw through the second servo motor controller.

[0024] The embodiment of the present application also provides an adaptive wave absorption test method under a hypergravity field. Based on the above-mentioned device, the method includes:

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

[0026] (2) The incident wave travels in the opposite direction of the wave travel direction, and forms a transmitting 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 through Fourier transform based on the wave height of the reflected wave, and determines whether the reflectivity meets the requirement of the acceptable maximum reflectivity;

[0028] (4) If the reflectivity meets the requirement, steps (2) and (3) are repeated. If the reflectivity does not meet the requirement, 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 the position where the reflected wave is the smallest is found, the distance adjustment module is controlled to stop; a command is sent to the aperture ratio adjustment module so that the second grid plate is driven by the second ball screw to move left and right perpendicular to the wave travel direction until the grid plate aperture ratio with the smallest wave height of the reflected wave is found, and the aperture ratio adjustment module is controlled to stop;

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

[0030] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0031] 1) A modular design method is adopted: after the entire absorbing device is integrated into a mounting base plate, the mounting base plate is fixed to the upper side of the model box, which overcomes the problem that the model box needs to have holes in the side wall, a set of devices can only be applied to one model box and waterproof, thereby achieving the technical effect of being applicable to different model boxes, the model box does not need holes to be opened and there is no waterproof problem.

[0032] 2) The technical means of adjusting the opening ratio of the absorbing plate and the distance between the absorbing plate and the side wall of the model box according to the real reflectivity of the wave is adopted, instead of determining the operating parameters of the absorbing device according to the empirical formula. This overcomes the technical problem that the absorbing device cannot be adjusted according to the real wave reflectivity to achieve the best absorbing effect, and thus achieves the technical effect that the absorbing device can be adjusted in real time according to the actual wave reflectivity to achieve the best absorbing rate.

[0033] 3) The technical means of real-time monitoring of wave reflectivity and then automatically controlling the operating parameters of the absorbing device through a computer was adopted, which overcame the technical problems of manually adjusting the operating parameters of the absorbing device and being unable to adjust the operating parameters of the absorbing device in real time according to the actual wave reflectivity, thereby achieving the technical effect that the operation of the absorbing device is in the best absorbing state throughout the test process.

[0034] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0036] Figure 1 It is a control principle diagram of an adaptive wave absorbing test device in a hypergravity field according to an exemplary embodiment.

[0037] Figure 2 It is a left-right isometric diagram of an adaptive wave absorbing test device in a hypergravity field according to an exemplary embodiment.

[0038] Figure 3 The figure is a bottom view of an adaptive wave absorbing test device in a hypergravity field according to an exemplary embodiment.

[0039] Figure 4 It is a left view of an adaptive wave absorbing test device in a hypergravity field according to an exemplary embodiment.

[0040] Figure 5 It is a principle diagram of an adaptive wave absorption test method in a hypergravity field according to an exemplary embodiment.

[0041] In the figure: 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, model box top plate; 7, wave absorbing system installation bottom plate; 8, drag chain guide rail; 9-1, first linear guide rail; 9-2, second linear guide rail; 9-3, first guide rail block; 9-4, second guide rail block; 9-5, third guide rail block; 9-6, fourth guide rail block; 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 , the first guide rail slider connector; 9-12, the second guide rail slider connector; 9-13, the third guide rail slider connector; 9-14, the fourth guide rail slider connector; 9-15, the first servo motor; 9-16, the first mounting base; 9-17, the first servo motor coupling; 9-18, the first ball screw; 9-19, the first grid plate connector; 9-20, the screw end mounting base; 9-21, the first grid plate; 9-22, the second grid plate; 10-1, the second servo motor; 10-2, the second servo motor base; 10-3, the second mounting base; 10-4, the second ball screw. DETAILED DESCRIPTION

[0042] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0043] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

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

[0045] The control principle diagram of the present invention is as follows: Figure 1 As shown, the local structure is Figure 2 , Figure 3 and Figure 4 As shown. Figures 1 to 4 As shown, the present application provides an adaptive wave absorbing test device under a hypergravity field, comprising: a model box 5, a model box top plate 6 is arranged on the top of the model box 5, and a wave absorbing mounting bottom plate is installed on the lower side of the model box top plate 6; a distance control module, comprising a first ball screw 9-18, a linear motion mechanism and a first grid plate 9-21, the linear motion mechanism is installed on the wave absorbing mounting bottom plate, the first ball screw 9-18 is used to make the first grid plate 9-21 realize the movement in the wave traveling direction through the linear motion mechanism, so as to adjust the first grid plate 9-21 and the side of the model box 5 The distance between the reflected wave and the wall; an opening rate control module, comprising a second ball screw 10-4 and a second grid plate 9-22, wherein the second ball screw 10-4 is mounted on the wave absorbing mounting base plate, and is used to control the movement of the second grid plate 9-22 in a direction perpendicular to the wave traveling direction, so as to adjust the grid plate opening rate formed by the second grid plate 9-22 and the first grid plate 9-21; a control system, wherein the control system is used to collect the wave height of the reflected wave, generate an adjustment signal according to the wave height and send it to the distance adjustment module and the opening rate adjustment module accordingly, so as to make the linear motion mechanism and the ball screw work.

[0046] Specifically, the side wall distance control module of the grid plate model box 5 also 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, and the nut of the first ball screw 9-18 is fixedly connected to the first grid plate 9-21.

[0048] In one embodiment, the present application provides a first mounting base 9-16 fixedly connected to the wave absorbing mounting base, a first servo motor 9-155 fixedly connected to the first mounting base 9-16, a rotating shaft of the first servo motor 9-15 is fixedly connected to a first servo motor coupling 9-17, one end of a first ball screw 9-18 passes through a bearing of the first mounting base 9-16 and is fixedly connected to the first servo motor coupling 9-17, the other end of the first ball screw 9-18 is fixedly connected to a screw end mounting base 9-20, a nut of the ball screw is fixedly connected to a first grid plate connector 9-19, and the first grid plate connector 9-19 is 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 9-1 and a first guide rail block 9-3 and a second guide rail block 9-4 fixed at both ends of the first linear guide 9-1, and the first linear guide 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 9-2 and a third guide rail block 9-5 and a fourth guide rail block 9-6 fixed at both ends of the second linear guide 9-2, and the second linear guide 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, and two sliders are arranged on each guide rail to ensure safety and deformation requirements under the hypergravity field.

[0050] In a specific implementation, the first linear guide rail 9-1 and the second linear guide rail 9-2 are respectively fixedly connected to the wave absorbing mounting base plate, and the first guide rail stopper 9-3, the second guide rail stopper 9-4, the third guide rail stopper 9-5, and the fourth guide rail stopper 9-6 are used to realize the limiting 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 through the first guide rail slider connector 9-11, is fixedly connected to the second guide rail slider 9-8 through the second guide rail slider connector 9-12, is connected to the third guide rail slider 9-9 through the third guide rail slider connector 9-13, and is fixedly connected to the fourth guide rail slider 9-10 through the fourth guide rail slider connector 9-14.

[0052] The first servo motor 9-15 drives the first ball screw 9-18 to rotate through the first servo motor coupling 9-17, and the first ball screw 9-18 drives the nut of the first ball screw 9-18 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 connected thereto 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 opening rate control module can also 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, and 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 rate control module may also include a second servo motor 10-1 support, a second mounting base 10-3, the second mounting base 10-3 is fixedly connected to the first grid plate 9-21, the second servo motor 10-1 is fixedly connected to the second mounting base 10-3, the second ball screw 10-4 is fixedly connected to the servo motor, the second ball screw 10-4 is mounted on the second mounting base 10-3, and the nut of the second ball screw 10-4 is 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, and the second ball screw 10-4 rotates to drive the screw nut to move left and right along the Y direction, and the nut of the second ball screw 10-4 drives the second grid plate 9-22 fixed to it. In this way, the size of the grid hole 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 collector 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 collect the wave height of the reflected wave. The wave height is transmitted to the computer 1 through the reflected wave height collector.

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

[0059] In a 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, and 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 device, the present application also proposes an adaptive wave absorbing test method under a hypergravity field, as follows ( 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 transmitting wave after encountering the grid plate. The reflected wave height collector collects the size of the reflected wave through the reflected wave height sensor 4, and the reflected wave height collector 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 determine whether the reflectivity meets the requirements.

[0064] (4) If the reflectivity meets the requirements, steps (2) and (3) are repeated. If the reflectivity does not meet the requirements, the computer 1 sends a command to the first servo motor controller 2-1, and the first servo motor controller 2-1 controls the first servo motor 9-15 to operate, thereby controlling the first grid plate 9-21 and the second grid plate 9-22 to move left and right along the X direction. In this process, the reflected wave height collector monitors the size of the reflected waves in real time and feeds back the data to the computer 1. After finding the position where the reflected wave is the smallest, the computer 1 issues a command to stop the operation of the first servo motor 9-15. After finding the best position of the grid plate in the X direction, the computer 1 sends a command to the second servo motor controller 2-2, and the second servo motor controller 2-2 controls the operation of the second servo motor 10-1. The second grid plate 9-22 moves left and right in the Y direction driven by the second ball screw 10-4. The reflected wave height collector feeds back the wave height data to the computer 1 until the grid plate opening rate with the smallest reflected wave is found, and the computer 1 issues a command to stop the operation of the second servo motor 10-1.

[0065] (5) Computer 1 monitors the wave reflectivity in real time, and if there is a change, the judgment process of step (3) is re-entered.

[0066] Those skilled in the art will readily appreciate other embodiments of the present application after considering the description and practicing the contents disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The description and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0067] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An adaptive wave absorbing test device under a hypergravity field, characterized in that: include: A model box, wherein a model box top plate is arranged on the top of the model box, and a wave absorbing installation bottom plate is installed on the lower side of the model box top plate; A distance adjustment module, comprising 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 enable the first grid plate to move in the wave traveling 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; an aperture ratio adjustment module, comprising 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 in a direction 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; A control system is used to collect the wave height of the reflected wave, generate an adjustment signal according to 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.

2. The device 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 fixedly connected to the wave-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, and 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 device 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 a screw end mounting base, and a nut of the first ball screw is fixedly connected to the first grid plate.

4. The device according to claim 3, characterized in that It also includes a first mounting base fixedly connected to the wave absorbing mounting base, the first servo motor is installed on the first mounting base, and one end of the first ball screw passes through the bearing of the first mounting base and is fixedly connected to the first servo motor coupling.

5. The device according to claim 1, characterized in that The linear motion mechanism comprises 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, and 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, and 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 device according to claim 2, characterized in that The opening rate adjustment module also includes a second servo motor, the output end of the second servo motor 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 device 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 device according to claim 1, characterized in that The control system includes a computer, a reflected wave height collector and a reflected wave height sensor. The reflected wave height sensor is fixed in front of the first grid plate to collect the wave height of the reflected wave. The wave height is transmitted to the computer through the reflected wave height collector.

9. The device according to claim 8, characterized in that The control system further includes a first servo motor controller and a second servo motor controller. The control instructions of the computer are transmitted to the linear motion mechanism through the first servo motor controller and are transmitted to the second ball screw through the second servo motor controller.

10. An adaptive wave absorption test method under a hypergravity field, characterized in that: Based on the device according to any one of claims 1 to 9, the method comprises: (1) Obtain the acceptable maximum reflectivity and start wave generation; (2) The incident wave travels in the opposite direction of the wave travel direction, and forms a transmitting wave after encountering the grid plate. The control system collects the wave height of the reflected wave; (3) The control system calculates the reflectivity through Fourier transform based on the wave height of the reflected wave, and determines whether the reflectivity meets the requirement of the acceptable maximum reflectivity; (4) If the reflectivity meets the requirement, steps (2) and (3) are repeated. If the reflectivity does not meet the requirement, 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 the position where the reflected wave is the smallest is found, the distance adjustment module is controlled to stop; a command is sent to the aperture ratio adjustment module so that the second grid plate is driven by the second ball screw to move left and right perpendicular to the wave travel direction until the grid plate aperture ratio with the smallest wave height of the reflected wave is found, and the aperture ratio adjustment module is controlled to stop; (5) Monitor the wave reflectivity in real time and return to step (3) if the reflectivity changes.

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