Micro-low gravity simulation test device and test method

Abstract

The invention relates to the technical field of environment test, and discloses a micro-low gravity simulation test device and method, the device comprises a first frame, a first speed sensor and a second speed sensor, the first frame is internally provided with a second frame which is driven by a first driving assembly to rotate around a first direction; a clamping part which is driven by a second driving assembly to rotate around a second direction and is used for fixing a test sample is arranged in the second frame; the first speed sensor is used for detecting the rotating speed of the second frame in the first direction to obtain a first speed, transmitting the first speed to the control system and correcting the working power of the first driving assembly; the second speed sensor is used for detecting the rotating speed of the clamping part in the second direction to obtain a second speed, the second speed is transmitted to the control system, the working power of the second driving assembly is corrected, and it can be ensured that the inorganic non-metal material sample is accurately kept in the needed micro-low gravity environment for testing.

Description

Technical Field

[0001] This invention relates to the field of environmental testing technology, specifically to a micro-low gravity simulation test device and test method. Background Technology

[0002] In recent years, with the increasing demand for space technology and its continuous development, more and more inorganic non-metallic materials are being used in the construction of space bases. This has placed increasingly stringent demands on the performance indicators of inorganic non-metallic materials under complex space environments. Microgravity environments significantly affect the curing and forming properties and structural service performance of inorganic non-metallic materials. Conducting thorough microgravity simulation tests is one of the key technical steps in evaluating the reliability and lifespan of inorganic non-metallic materials.

[0003] Microgravity experiments are difficult to conduct in the actual space environment. It is necessary to simulate the working state of microgravity in space within the Earth's gravity environment. Most existing microgravity simulation devices adopt microgravity simulation technologies such as air flotation, suspension, and drop tower methods. However, these microgravity simulation technologies are difficult to carry out and implement under thermal vacuum conditions, and are not convenient to accurately simulate different microgravity environments, resulting in poor applicability. Summary of the Invention

[0004] In view of this, the present invention provides a micro-low gravity simulation test device and test method to solve the problems that existing micro-low gravity simulation test devices are difficult to carry out and implement under thermal vacuum conditions, and are not convenient to accurately simulate different micro-low gravity environments.

[0005] In a first aspect, the present invention provides a micro-low gravity simulation test device for use inside a vacuum chamber, the test device comprising:

[0006] The first frame is used to set up a worktable inside the vacuum tank;

[0007] The second frame is rotatably connected within the first frame and is driven to rotate about a first direction by the first drive component;

[0008] The clamping part is used to clamp and fix the test sample. The clamping part is rotatably connected in the second frame and is driven by the second drive assembly to rotate around the second direction. The second direction is perpendicular to the first direction and is located on the same horizontal plane.

[0009] A first speed sensor is used to detect the speed at which the second frame rotates around a first direction to obtain a first speed, and transmit the first speed to the control system; the control system compares the first speed with a first standard rotational speed to obtain a first offset value, corrects the operating power of the first drive component according to the first offset value, and controls the rotation of the first drive component according to the corrected operating power of the first drive component;

[0010] The second speed sensor is used to detect the speed at which the clamping part rotates around the second direction to obtain a second speed, and transmits the second speed to the control system; the control system compares the second speed with the second standard rotation speed to obtain a second offset value, corrects the working power of the second drive component according to the second offset value, and controls the rotation of the second drive component according to the corrected working power of the second drive component.

[0011] The micro-low gravity simulation experimental device according to the present invention has at least the following beneficial effects:

[0012] By driving the second frame to rotate in a first direction using the first drive assembly, and driving the clamping part to rotate in a second direction using the second drive assembly, the test sample rotates in both directions simultaneously. The centrifugal force generated during the rotation can partially offset the gravity, thus simulating a micro-low gravity environment through mechanical rotation. This satisfies the requirements for conducting and implementing micro-low gravity environment simulation experiments in a vacuum chamber under thermal vacuum conditions. Simultaneously, the actual rotational speed of the second frame is detected in real time by the first speed sensor, and the first speed is compared with the first standard rotational speed to obtain a first offset value. The operating power of the first drive assembly is corrected based on the first offset value, and the first drive assembly is controlled according to the corrected operating power. The drive assembly rotates to ensure the second frame rotates precisely around the first direction at a first standard rotational speed. A second speed sensor detects the actual rotational speed of the clamping part in real time, compares this second speed with the second standard rotational speed to obtain a second offset value, corrects the operating power of the second drive assembly based on this offset value, and controls the rotation of the second drive assembly based on the corrected operating power. This ensures the clamping part rotates precisely around the second direction at the second standard rotational speed for an extended period, thereby ensuring the test sample remains in the required micro-low gravity environment for testing for a prolonged time, ensuring the accuracy of the experiment. Because changing the first and second standard rotational speeds alters the magnitude of the centrifugal force generated by rotation, adjusting the rotational speed of the test sample around the first and second directions changes the magnitude of the acceleration vector experienced by the test sample. This allows for the simulation of more micro-low gravity environments, meeting the experimental requirements for different spatial micro-low gravity environments and improving the applicability of the experiment.

[0013] In one optional embodiment, a force sensor is further included, which is used to detect a first gravity value experienced by the test sample and transmit the first gravity value to the control system; the control system compares the first gravity value with a standard micro-low gravity value to obtain a gravity offset value, decomposes the gravity offset value to obtain a first sub-compensated rotational speed around a first direction and a second sub-compensated rotational speed around a second direction, corrects the operating power of the first drive component according to the first sub-compensated rotational speed, controls the rotation of the first drive component according to the corrected operating power, and corrects the operating power of the second drive component according to the second sub-compensated rotational speed, controls the rotation of the second drive component according to the corrected operating power.

[0014] In one optional embodiment, the first drive assembly includes a first motor disposed on the first frame along a third direction, the output end of the first motor being connected to a first worm gear reducer, and the output end of the first worm gear reducer being coaxially connected to the second frame; the first direction, the second direction, and the third direction are mutually perpendicular.

[0015] In one optional embodiment, the second drive assembly includes a second motor disposed in the second frame along a third direction, the output end of the second motor being connected to a second worm gear reducer, and the output end of the second worm gear reducer being coaxially connected to the clamping part.

[0016] In one alternative implementation, the first motor and the second motor are configured as high and low temperature resistant motors.

[0017] In one optional embodiment, the first frame is provided with a U-shaped groove at its upper end along a third direction, and the second frame is rotatably connected to the U-shaped groove.

[0018] In one alternative implementation, the first motor is located below the first worm gear reducer in a third direction.

[0019] In one alternative implementation, the control system is provided with a display.

[0020] In one optional embodiment, a mounting slot is formed through the second frame along its thickness direction, and the clamping part is rotatably connected to the mounting slot.

[0021] And / or, the second frame is rotatably connected to the first frame via a first ceramic oilless bearing;

[0022] And / or, the clamping part is rotatably connected to the second frame via a second ceramic oilless bearing.

[0023] Secondly, the present invention also provides a testing method applied to the testing apparatus provided in the first aspect, the testing method comprising the following steps:

[0024] The test apparatus is installed on the worktable inside the vacuum chamber, and the test sample to be tested is fixed in the clamping part.

[0025] Input the standard micro-gravity acceleration value required for the test into the control system;

[0026] The first driving component and the second driving component respectively drive the inorganic non-metallic material to rotate around the first direction and the second direction.

[0027] A first speed is obtained by detecting the speed at which the second frame rotates around a first direction using a first speed sensor, and the first speed is transmitted to the control system; the control system compares the first speed with a first standard rotational speed to obtain a first offset value, and corrects the operating power of the first drive component based on the first offset value;

[0028] The second speed is obtained by detecting the speed at which the clamping part rotates around the second direction using a second speed sensor, and the second speed is transmitted to the control system. The control system compares the second speed with the second standard rotation speed to obtain a second offset value, and corrects the operating power of the second drive component based on the second offset value.

[0029] According to a test method of the present invention, at least the following beneficial effects are achieved:

[0030] By driving the second frame to rotate in the first direction using the first drive assembly, and driving the clamping part to rotate in the second direction using the second drive assembly, the test sample rotates in the second direction simultaneously with the first direction. The centrifugal force generated during the rotational motion can partially cancel out the gravity, thus simulating a micro-low gravity environment through mechanical rotation. This satisfies the requirement for conducting and implementing micro-low gravity environment simulation experiments in a vacuum chamber under thermal vacuum conditions. Furthermore, by inputting a standard micro-low gravity acceleration to the control system, the total acceleration generated by the test sample during its rotational motion in the first and second directions is obtained by comparing the Earth's gravitational acceleration with the standard micro-low gravity acceleration. Based on this total acceleration, a first standard rotational speed in the first direction and a second standard rotational speed in the second direction are decomposed. Simultaneously, the actual rotational speed of the second frame is detected in real time by a first speed sensor, and this first speed is compared with the first standard rotational speed. A first offset value is obtained by comparing the speeds. The operating power of the first drive component is corrected based on the first offset value, and the rotation of the first drive component is controlled according to the corrected operating power to ensure that the second frame rotates precisely around the first direction at the first standard speed. Furthermore, the actual rotational speed of the clamping part is detected in real time by the second speed sensor. The second speed is compared with the second standard speed to obtain the second offset value. The operating power of the second drive component is corrected based on the second offset value, and the rotation of the second drive component is controlled according to the corrected operating power to ensure that the clamping part rotates precisely around the second direction at the second standard speed. This ensures that the test sample rotates precisely around the first direction at the first standard speed and around the second direction at the second standard speed for an extended period, thereby ensuring that the test sample is kept in the required micro-low gravity environment for testing for a long time, ensuring the accuracy of the test. Because the magnitude of the centrifugal force generated by rotation can be changed by changing the first and second standard speeds, the magnitude of the acceleration vector experienced by the test sample can be changed by adjusting the rotational speed of the test sample around the first and second directions. This allows for the simulation of more micro-low gravity environments, meeting the testing requirements for different spatial micro-low gravity environments and improving the applicability of the test. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural diagram of a micro-low gravity simulation test device according to an embodiment of the present invention;

[0033] Figure 2for Figure 1 A schematic diagram of its decomposed structure.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100 - First frame, 110 - U-groove, 120 - First ceramic oilless bearing;

[0036] 200 - Second frame, 210 - Mounting through slot;

[0037] 300 - Clamping part;

[0038] 410 - First motor; 420 - First worm gear reducer;

[0039] 510 - Second motor, 520 - Second worm gear reducer. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this embodiment. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this embodiment, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment according to the specific circumstances.

[0043] The following is combined Figure 1 and Figure 2 The following describes embodiments of the present invention.

[0044] According to a first aspect of the present invention, a micro-low gravity simulation test device is provided, applied inside a vacuum chamber. The test device includes a first frame 100, a first velocity sensor, and a second velocity sensor. The first frame 100 is used as a worktable disposed inside the vacuum chamber. A second frame 200 is rotatably connected inside the first frame 100, and the second frame 200 is driven to rotate about a first direction by a first driving assembly. A clamping part 300 is rotatably connected inside the second frame 200, the clamping part 300 being used to clamp and fix a test sample, and is driven to rotate about a second direction by the second driving assembly. In this embodiment, the test sample is preferably an inorganic non-metallic material sample. The first velocity sensor is used to detect the speed of the second frame 200 rotating about the first direction to obtain a first velocity. A first speed is transmitted to the control system; the control system compares the first speed with a first standard rotational speed to obtain a first offset value, corrects the operating power of the first drive component based on the first offset value, and controls the rotation of the first drive component based on the corrected operating power; a second speed sensor detects the speed at which the clamping part 300 rotates around a second direction to obtain a second speed, and transmits the second speed to the control system; the control system compares the second speed with a second standard rotational speed to obtain a second offset value, corrects the operating power of the second drive component based on the second offset value, and controls the rotation of the second drive component based on the corrected operating power; the first direction, second direction, and third direction mentioned in the text refer to... Figure 1 The first direction, the second direction, and the third direction are perpendicular to each other, and the first direction and the second direction are located on the same horizontal plane.

[0045] The experimental apparatus of this embodiment drives the second frame 200 to rotate in a first direction by the first driving component, and drives the clamping part 300 to rotate in a second direction. This allows the inorganic non-metallic material sample to rotate in both directions simultaneously. The centrifugal force generated during the rotational motion can partially offset the gravity, thus simulating a micro-low gravity environment through mechanical rotation. This satisfies the requirements for conducting and implementing micro-low gravity environment simulation experiments in a vacuum chamber under thermal vacuum conditions. Simultaneously, the first speed sensor detects the actual rotational speed of the second frame 200 in real time, compares the first speed with a first standard rotational speed to obtain a first offset value, corrects the operating power of the first driving component based on the first offset value, and controls the power based on the corrected operating power of the first driving component. The first drive component rotates to ensure that the second frame 200 rotates precisely around the first direction at a first standard rotational speed. A second speed sensor detects the actual rotational speed of the clamping part 300 in real time, compares this second speed with the second standard rotational speed to obtain a second offset value, corrects the operating power of the second drive component based on this offset value, and controls the rotation of the second drive component based on the corrected operating power. This ensures that the clamping part 300 rotates precisely around the second direction at the second standard rotational speed. This ensures that the inorganic non-metallic material sample rotates precisely around the first direction at the first standard rotational speed and around the second direction at the second standard rotational speed for an extended period, thereby ensuring that the inorganic non-metallic material sample is kept in the required micro-low gravity environment for testing for a long time, ensuring the accuracy of the test. Because the magnitude of the centrifugal force generated by rotation can be changed by altering the first and second standard rotational speeds, the magnitude of the acceleration vector experienced by the inorganic non-metallic material sample can be changed by adjusting the rotational speed of the inorganic non-metallic material sample around the first and second directions. This allows for the simulation of more micro-low gravity environments, meeting the testing requirements of different spatial micro-low gravity environments and improving the applicability of the test.

[0046] It should be noted that when the second frame 200 rotates around the first direction at a first standard rotational speed, the first offset value is zero, meaning there is no need to correct the operating power of the first drive component. When the clamping part 300 rotates around the first direction at a second standard rotational speed, the second offset value is zero, meaning there is no need to correct the operating power of the second drive component.

[0047] Specifically, the first standard rotational speed refers to the centrifugal force generated during the rotation of the inorganic non-metallic material sample, combined with the acceleration due to gravity, at a speed of 9.80 m / s². 2The partial gravitational force generated cancels out the resistance, placing the inorganic non-metallic material sample under the required low-gravity environment (i.e., subjected to the standard low-gravity acceleration value required for the experiment). The rotational speed of the inorganic non-metallic material sample is the component of its rotational speed around the first direction; the second standard rotational speed refers to the centrifugal force generated during the rotation of the inorganic non-metallic material sample combined with the Earth's gravitational acceleration of 9.80 m / s². 2 The generated partial gravity cancels out the inorganic non-metallic material sample, placing it under the required micro-low gravity environment conditions (i.e., subjected to the standard micro-low gravity acceleration value required for the test), and the rotational speed of the inorganic non-metallic material sample in the second direction.

[0048] It is understandable that the first and second standard rotational speeds are obtained in the following way: the total acceleration generated by the inorganic non-metallic material sample during its rotational motion around the first and second directions is obtained by comparing the Earth's gravitational acceleration with the standard micro-gravity acceleration. The first standard rotational speed around the first direction and the second standard rotational speed around the second direction are obtained by decomposing the total acceleration, the radius of rotation of the inorganic non-metallic material sample around the first direction, and the radius of rotation of the inorganic non-metallic material sample around the second direction.

[0049] Considering that the experimental area is affected by factors such as different latitudes, longitudes, and altitudes, the Earth's gravitational acceleration in that area is not necessarily 9.80 m / s². 2 This results in the inorganic non-metallic material sample not receiving the required standard micro-low gravity acceleration value even when rotated at a first standard speed around a first direction or at a second standard speed around a second direction. To address this issue, in some embodiments, the testing apparatus further includes a force sensor. The force sensor detects the first gravity value experienced by the inorganic non-metallic material sample and transmits this value to the control system. The control system compares the first gravity value with the standard micro-low gravity value to obtain a gravity offset value. Based on the gravity offset value, it decomposes the first sub-compensated speed around the first direction and the second sub-compensated speed around the second direction. The control system then corrects the operating power of the first drive component based on the first sub-compensated speed and controls its rotation based on the corrected operating power. Similarly, it corrects the operating power of the second drive component based on the second sub-compensated speed and controls its rotation based on the corrected operating power. This achieves compensation for the first and second standard speeds based on external factors, ensuring that the inorganic non-metallic material sample is accurately maintained in the required micro-low gravity environment for extended periods during testing, thus ensuring the accuracy of the experiment.

[0050] It should be noted that when the first gravity value is the same as the standard microgravity value, the gravity offset value is zero.

[0051] Specifically, the standard micro-low gravity value refers to the gravity generated when a stepless non-metallic material sample is subjected to the standard micro-low gravity acceleration required for the test.

[0052] Specifically, the control system is equipped with a display that can show the first speed detected by the first speed sensor, the second speed detected by the second speed sensor, and the first gravity value detected by the force sensor, so that the test personnel can monitor them intuitively.

[0053] It is understood that the first compensated rotational speed around the first direction and the second compensated rotational speed around the second direction are obtained by decomposing the gravity offset value as follows: the acceleration offset value is obtained based on the gravity offset value and the weight of the inorganic non-metallic material sample, and the first compensated rotational speed around the first direction and the second compensated rotational speed around the second direction are obtained by decomposing the acceleration offset value, the rotation radius of the inorganic non-metallic material sample around the first direction, and the rotation radius of the inorganic non-metallic material sample around the second direction.

[0054] like Figure 1 and Figure 2 As shown, in some embodiments, the first drive assembly includes a first motor 410 disposed along a third direction on the first frame 100. The output end of the first motor 410 is connected to a first worm gear reducer 420, and the output end of the first worm gear reducer 420 is coaxially connected to the second frame 200. By arranging the first motor 410 along a third direction, the size of the first drive assembly along the first direction is reduced, and the first worm gear reducer 420 is more compact than a bevel gear reducer, making the test device of this embodiment more miniaturized and reducing the space occupied by the test device in the vacuum chamber. This allows more space to be released inside the vacuum chamber, reducing the impact of falling dust on the test results.

[0055] Specifically, the second drive assembly includes a second motor 510 disposed along a third direction on the second frame 200. The output end of the second motor 510 is connected to a second worm gear reducer 520, and the output end of the second worm gear reducer 520 is coaxially connected to the clamping part 300. By arranging the second motor 510 along a third direction, the size of the second drive assembly along the second direction is reduced, and the second worm gear reducer 520 has a more compact structure than a bevel gear reducer, making the test device of this embodiment more miniaturized and reducing the space occupied by the test device in the vacuum chamber. This allows more space to be released inside the vacuum chamber, reducing the impact of falling dust on the test results.

[0056] Specifically, the first motor 410 and the second motor 510 are configured as high and low temperature resistant motors so that the test device of this embodiment can carry out and implement micro-low gravity environment simulation tests in a vacuum tank under vacuum conditions of alternating high and low temperatures.

[0057] Specifically, the first frame 100 is provided with a U-shaped groove 110 at its upper end along the third direction, the second frame 200 is rotatably connected to the U-shaped groove 110, and the first motor 410 is located below the first worm gear reducer 420 along the third direction. By embedding the second frame 200 and the first motor 410 in the U-shaped groove 110, the size of the test device in the third direction of this embodiment can be reduced more effectively, making the test device of this embodiment more miniaturized and reducing the space occupied by the test device in the vacuum chamber, thereby releasing more space inside the vacuum chamber and reducing the impact of falling dust on the test results.

[0058] Specifically, a mounting groove 210 is formed through the second frame 200 along its thickness direction, and the clamping part 300 is rotatably connected to the mounting groove 210; thereby facilitating the clamping and fixing of inorganic non-metallic material samples to the clamping part 300.

[0059] Specifically, the second frame 200 is rotatably connected to the first frame 100 via a first oil-free ceramic bearing 120; the clamping part 300 is rotatably connected to the second frame 200 via a second oil-free ceramic bearing. The reduction of the rotational friction coefficient by using the first and second oil-free ceramic bearings helps improve the stability of the inorganic non-metallic material sample rotating around the first and second directions.

[0060] According to a second aspect of the present invention, a testing method is also provided, comprising the micro-low gravity simulation testing device for inorganic non-metallic materials provided in the first aspect of the present invention; the testing method comprises the following steps:

[0061] The test apparatus is installed on the worktable inside the vacuum chamber, and the inorganic non-metallic material sample to be tested is fixed in the clamping part 300.

[0062] Input the standard micro-gravity acceleration required for the test into the control system;

[0063] The first driving component and the second driving component respectively drive the inorganic non-metallic material to rotate around the first direction and the second direction.

[0064] A first speed is obtained by detecting the rotational speed of the second frame 200 around a first direction using a first speed sensor, and the first speed is transmitted to the control system; the control system compares the first speed with a first standard rotational speed to obtain a first offset value, and corrects the operating power of the first drive component based on the first offset value;

[0065] The second speed is obtained by detecting the rotation speed of the clamping part 300 around the second direction using the second speed sensor, and the second speed is transmitted to the control system. The control system compares the second speed with the second standard rotation speed to obtain a second offset value, and corrects the working power of the second drive component according to the second offset value.

[0066] The experimental method of this embodiment drives the second frame 200 to rotate in the first direction by the first driving component, and drives the clamping part 300 to rotate in the second direction by the second driving component. This allows the inorganic non-metallic material sample to rotate in the second direction while simultaneously rotating in the first direction. The centrifugal force generated during the rotational motion can partially cancel out the gravity, thus simulating a micro-low gravity environment through mechanical rotation. This satisfies the requirement for conducting and implementing micro-low gravity environment simulation experiments in a vacuum chamber under thermal vacuum conditions. Furthermore, by inputting a standard micro-low gravity acceleration to the control system, the total acceleration generated by the inorganic non-metallic material sample during its rotational motion in the first and second directions is obtained by comparing the Earth's gravitational acceleration with the standard micro-low gravity acceleration. Based on the total acceleration, the rotational radius of the inorganic non-metallic material sample in the first direction, and the rotational radius of the inorganic non-metallic material sample in the second direction, a first standard rotational speed in the first direction and a second standard rotational speed in the second direction are obtained. Simultaneously, the second frame 200 is detected in real time by the first speed sensor. The first rotational speed of the second frame 200 is measured and compared with a first standard rotational speed to obtain a first offset value. The operating power of the first drive component is corrected based on the first offset value, and the rotation of the first drive component is controlled based on the corrected operating power to ensure that the second frame 200 rotates precisely around the first direction at the first standard rotational speed. The second rotational speed of the clamping part 300 is detected in real time by a second speed sensor, and the second speed is compared with a second standard rotational speed to obtain a second offset value. The operating power of the second drive component is corrected based on the second offset value, and the rotation of the second drive component is controlled based on the corrected operating power to ensure that the clamping part 300 rotates precisely around the second direction at the second standard rotational speed. This ensures that the inorganic non-metallic material sample rotates precisely around the first direction at the first standard rotational speed and around the second direction at the second standard rotational speed for an extended period, thereby ensuring that the inorganic non-metallic material sample is kept in the required low-gravity environment for testing for a long time, ensuring the accuracy of the test. Because the magnitude of the centrifugal force generated by rotation can be changed by altering the first and second standard rotation speeds, the magnitude of the acceleration vector experienced by the inorganic non-metallic material sample can be changed by adjusting the rotation speed of the inorganic non-metallic material sample around the first and second directions (i.e., changing the magnitude of the standard micro-gravity acceleration). This allows for the simulation of more micro-gravity environments, meets the experimental requirements for different spatial micro-gravity environments, and improves the applicability of the experiment.

[0067] It is understandable that obtaining the first standard rotational speed around the first direction and the second standard rotational speed around the second direction based on the total acceleration decomposition specifically includes: obtaining the radius of rotation of the inorganic non-metallic material sample around the first direction and the radius of rotation of the inorganic non-metallic material sample around the second direction, and obtaining the first standard rotational speed around the first direction and the second standard rotational speed around the second direction based on the total acceleration, the radius of rotation of the inorganic non-metallic material sample around the first direction and the radius of rotation of the inorganic non-metallic material sample around the second direction.

[0068] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and all such modifications and variations fall within the scope defined by the invention.

Claims

1. A micro-low gravity simulation experimental device, applied inside a vacuum chamber, characterized in that, The test apparatus includes: The first frame (100) is used as a worktable inside the vacuum tank; The second frame (200) is rotatably connected within the first frame (100) and is driven to rotate about a first direction by the first drive component; The clamping part (300) is used to clamp and fix the test sample. The clamping part (300) is rotatably connected in the second frame (200) and is driven by the second drive assembly to rotate around the second direction. The second direction and the first direction are perpendicular to each other and are located on the same horizontal plane. A first speed sensor is used to detect the speed at which the second frame (200) rotates around a first direction to obtain a first speed, and transmits the first speed to the control system; the control system compares the first speed with a first standard rotational speed to obtain a first offset value, corrects the working power of the first drive component according to the first offset value, and controls the rotation of the first drive component according to the corrected working power of the first drive component. The second speed sensor is used to detect the speed at which the clamping part (300) rotates around the second direction to obtain a second speed, and transmits the second speed to the control system; the control system compares the second speed with the second standard rotation speed to obtain a second offset value, corrects the working power of the second drive component according to the second offset value, and controls the rotation of the second drive component according to the corrected working power of the second drive component.

2. The micro-low gravity simulation experimental device according to claim 1, characterized in that, It also includes a force sensor, which is used to detect a first gravity value of the test sample and transmit the first gravity value to the control system; The control system compares the first gravity value with the standard micro-low gravity value to obtain a gravity offset value. Based on the gravity offset value, it decomposes the first sub-compensated rotational speed around the first direction and the second sub-compensated rotational speed around the second direction. Based on the first sub-compensated rotational speed, it corrects the working power of the first drive component and controls the rotation of the first drive component based on the corrected working power. Based on the second sub-compensated rotational speed, it corrects the working power of the second drive component and controls the rotation of the second drive component based on the corrected working power.

3. A micro-low gravity simulation experimental device according to claim 1 or 2, characterized in that, The first drive assembly includes a first motor (410) disposed on the first frame (100) along a third direction. The output end of the first motor (410) is connected to a first worm gear reducer (420). The output end of the first worm gear reducer (420) is coaxially connected to the second frame (200). The first direction, the second direction and the third direction are perpendicular to each other.

4. The micro-low gravity simulation experimental device according to claim 3, characterized in that, The second drive assembly includes a second motor (510) disposed in the second frame (200) along a third direction. The output end of the second motor (510) is connected to a second worm gear reducer (520), and the output end of the second worm gear reducer (520) is coaxially connected to the clamping part (300).

5. The micro-low gravity simulation experimental device according to claim 4, characterized in that, The first motor (410) and the second motor (510) are configured as high and low temperature resistant motors.

6. The micro-low gravity simulation experimental device according to claim 3, characterized in that, The first frame (100) has a U-shaped groove (110) at its upper end along a third direction, and the second frame (200) is rotatably connected to the U-shaped groove (110).

7. The micro-low gravity simulation experimental device according to claim 6, characterized in that, The first motor (410) is located below the first worm gear reducer (420) in the third direction.

8. The micro-low gravity simulation experimental device according to claim 2, characterized in that, The control system is equipped with a display.

9. A micro-low gravity simulation experimental device according to claim 1 or 2, characterized in that, A mounting slot (210) is formed through the second frame (200) along its thickness direction, and the clamping part (300) is rotatably connected to the mounting slot (210); And / or, the second frame (200) is rotatably connected to the first frame (100) via a first ceramic oilless bearing (120); And / or, the clamping part (300) is rotatably connected to the second frame (200) via a second ceramic oilless bearing.

10. A test method, applied to the test apparatus as described in any one of claims 1 to 9, characterized in that, The experimental method includes the following steps: The test apparatus is installed on the worktable inside the vacuum chamber, and the test sample to be tested is fixed in the clamping part (300). Input the standard micro-gravity acceleration required for the test into the control system; The first driving component and the second driving component respectively drive the inorganic non-metallic material to rotate around the first direction and the second direction. A first speed is obtained by detecting the speed at which the second frame (200) rotates around a first direction using a first speed sensor, and the first speed is transmitted to the control system; the control system compares the first speed with a first standard rotational speed to obtain a first offset value, and corrects the operating power of the first drive component based on the first offset value; The second speed is obtained by detecting the speed at which the clamping part (300) rotates in a second direction using a second speed sensor, and the second speed is transmitted to the control system. The control system compares the second speed with a second standard rotational speed to obtain a second offset value, and corrects the operating power of the second drive component based on the second offset value.

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