CN-122017129-A - Micro-low gravity simulation test device and test method

CN122017129ACN 122017129 ACN122017129 ACN 122017129ACN-122017129-A

Abstract

The invention relates to the technical field of environmental tests and discloses a micro-low gravity simulation test device and a test method, wherein the device comprises a first frame, a first speed sensor and a second speed sensor, and a second frame which is driven by a first driving component to rotate around a first direction is arranged in the first frame; the second frame is internally provided with 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; the first speed sensor is used for detecting the rotation speed of the second frame around 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 rotation speed of the clamping part around the second direction to obtain a second speed, transmitting the second speed to the control system and correcting the working power of the second driving assembly.

Inventors

JI XIAO
WU HAO
LIU YAOJUN
MA ZHONGCHENG
GAO CHUNYONG
LIU YUN
GUO JUNHUA

Assignees

中国建筑材料科学研究总院有限公司
中国建材集团有限公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (10)

1. A micro-low gravity simulation test device applied in a vacuum tank, characterized in that the test device comprises: A first frame (100) for a table disposed within the vacuum tank; a second frame (200) rotatably connected within the first frame (100) and driven to rotate about a first direction by a first drive assembly; the clamping part (300) is used for clamping and fixing a test sample, the clamping part (300) is rotationally connected in the second frame (200) and is driven by the second driving assembly to rotate around a second direction, and the second direction and the first direction are mutually perpendicular and are positioned on the same horizontal plane; the control system compares the first speed with a first standard rotating speed to obtain a first offset value, corrects the working power of the first driving assembly according to the first offset value, and controls the first driving assembly to rotate according to the corrected working power of the first driving assembly; the control system compares the second speed with a second standard rotating speed to obtain a second offset value, corrects the working power of the second driving assembly according to the second offset value, and controls the second driving assembly to rotate according to the corrected working power of the second driving assembly.
2. The micro-low gravity simulation test device according to claim 1, further comprising a force sensor, wherein the force sensor is used for detecting a first gravity value received by a test sample and transmitting 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-compensation rotating speed around a first direction and a second sub-compensation rotating speed around a second direction according to the gravity offset value, corrects the working power of the first driving assembly according to the first sub-compensation rotating speed, controls the first driving assembly to rotate according to the corrected working power of the first driving assembly, corrects the working power of the second driving assembly according to the corrected working power of the second driving assembly, and controls the second driving assembly to rotate according to the corrected working power of the second driving assembly.
3. The micro-low gravity simulation test device according to claim 1 or 2, wherein the first driving assembly comprises a first motor (410) arranged on the first frame (100) along a third direction, the output end of the first motor (410) is connected with a first worm gear reducer (420), the output end of the first worm gear reducer (420) is coaxially connected with the second frame (200), and the first direction, the second direction and the third direction are mutually perpendicular.
4. A micro-gravity simulation test device according to claim 3, wherein the second driving assembly comprises a second motor (510) arranged on the second frame (200) along a third direction, an output end of the second motor (510) is connected with a second worm gear reducer (520), and an output end of the second worm gear reducer (520) is coaxially connected with the clamping part (300).
5. The micro-low gravity simulation test device according to claim 4, wherein the first motor (410) and the second motor (510) are configured as high and low temperature resistant motors.
6. A micro-gravity simulation test device according to claim 3, wherein the upper end of the first frame (100) along the third direction is provided with a U-shaped groove (110), and the second frame (200) is rotatably connected in the U-shaped groove (110).
7. The micro-low gravity simulation test device according to claim 6, wherein the first motor (410) is located below the first worm gear reducer (420) along a third direction.
8. A micro-low gravity simulation test device according to claim 2, wherein the control system is provided with a display.
9. The micro-gravity simulation test device according to claim 1 or 2, wherein a mounting through groove (210) is formed in the second frame (200) in a thickness direction thereof, and the clamping part (300) is rotatably connected in the mounting through groove (210); and/or the second frame (200) is rotatably connected in the first frame (100) through a first ceramic oilless bearing (120); and/or the clamping part (300) is rotatably connected in the second frame (200) through a second ceramic oilless bearing.
10. A test method applied to a test device according to any one of claims 1 to 9, characterized in that the test method comprises the steps of: Installing the test device on a workbench in a vacuum tank, and installing and fixing a test sample to be tested on the clamping part (300); inputting standard micro-low gravity acceleration required by a test into the control system; the inorganic nonmetallic material is driven to rotate around a first direction and a second direction by a first driving component and a second driving component respectively; Detecting the rotation speed of the second frame (200) around the first direction through a first speed sensor to obtain a first speed, and transmitting the first speed to the control system; the control system compares the first speed with a first standard rotating speed to obtain a first offset value, and corrects the working power of the first driving assembly according to the first offset value; Detecting the rotation speed of the clamping part (300) around a second direction through a second speed sensor to obtain a second speed, and transmitting the second speed to the control system; and the control system compares the second speed with a second standard rotating speed to obtain a second offset value, and corrects the working power of the second driving assembly according to the second offset value.

Description

Micro-low gravity simulation test device and test method Technical Field The invention relates to the technical field of environmental tests, in particular to a micro-low gravity simulation test device and a test method. Background In recent years, space demands are increasing, space technology is developing continuously, and more inorganic nonmetallic materials are also applied to the construction of space bases, so that more stringent requirements are put forward on various performance indexes of the inorganic nonmetallic materials under complex space environments. The micro-low gravity environment can obviously influence the solidification forming performance and the structural service performance of the inorganic nonmetallic material, and the development of a full micro-low gravity simulation test is one of key technical links for evaluating the reliability and the service life of the inorganic nonmetallic material. The research of the micro-low gravity test is difficult to implement in an actual space environment, the working state of micro-low gravity in space is required to be simulated in the earth gravity environment, most of the existing micro-low gravity simulation test devices adopt micro-low gravity simulation technologies such as an air float method, a suspension method, a tower falling method and the like, but the micro-low gravity simulation technologies are difficult to develop and implement under a thermal vacuum condition, and are inconvenient to accurately simulate different micro-low gravity environments, so that the applicability is poor. Disclosure of Invention In view of the above, the invention provides a micro-low gravity simulation test device and a test method, which are used for solving the problems that the existing micro-low gravity simulation test device is difficult to develop and implement under the condition of thermal vacuum and is inconvenient to accurately simulate different micro-low gravity environments. In a first aspect, the present invention provides a micro-low gravity simulation test device for use in a vacuum tank, the test device comprising: A first frame for a workbench disposed within the vacuum tank; the second frame is rotationally connected in the first frame and is driven by the first driving component to rotate around a first direction; The clamping part is used for clamping and fixing a test sample, is rotationally connected in the second frame, is driven by the second driving assembly to rotate around a second direction, is mutually perpendicular to the first direction and is positioned on the same horizontal plane; The control system compares the first speed with a first standard rotating speed to obtain a first offset value, corrects the working power of the first driving assembly according to the first offset value, and controls the first driving assembly to rotate according to the corrected working power of the first driving assembly; The control system compares the second speed with a second standard rotating speed to obtain a second offset value, corrects the working power of the second driving assembly according to the second offset value, and controls the second driving assembly to rotate according to the corrected working power of the second driving assembly. The micro-low gravity simulation test device provided by the invention has at least the following beneficial effects: The method comprises the steps of driving a first driving component to drive a second frame to rotate along a first direction, driving a clamping part to rotate around a second direction by the second driving component, enabling a test sample to rotate around the second direction while rotating around the first direction, enabling centrifugal force generated in the rotating process to be offset with partial gravity, simulating a micro-low gravity environment through a mechanical rotation method, enabling a vacuum tank under a thermal vacuum condition to be developed and implemented in a micro-low gravity environment simulation test, simultaneously enabling a first speed sensor to detect the actual rotating first speed of the second frame in real time, comparing the first speed with a first standard rotating speed to obtain a first offset value, correcting working power of the first driving component according to the first offset value, controlling the first driving component to rotate around the first direction according to the working power of the corrected first driving component, ensuring that the second frame accurately rotates around the first direction at the first standard rotating speed, enabling the second frame to obtain the actual rotating second speed of the clamping part to be detected in real time through a second speed sensor, enabling the second speed to be compared with the second standard rotating speed to obtain the second offset value, enabling the second speed to be corrected to be in real time, enabling the second frame to accurately rotate around the