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Gravity method micro-thrust measuring device and pipeline stress interference elimination method thereof

A measuring device and micro-thrust technology, applied in the direction of measuring devices, force/torque/power measuring instruments, instruments, etc., can solve problems such as the inability to meet the micro-thrust measurement requirements of the pipeline system, reduce stress interference, and reduce pipe pressure. Road stress, the effect of reducing interference

Pending Publication Date: 2022-03-25
SHANGHAI INST OF SPACE PROPULSION
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  • Claims
  • Application Information

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However, this patent document cannot meet the needs of micro-thrust measurement in pipeline systems

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  • Gravity method micro-thrust measuring device and pipeline stress interference elimination method thereof
  • Gravity method micro-thrust measuring device and pipeline stress interference elimination method thereof

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0035] The accuracy of the weighing balance can reach 0.01 ~ 0.1mg, and the measurement thrust can reach the level of 0.1 ~ 1μN. However, since the thrust of the microbull-level air-conditioning thruster is in the μN level, when working, the working gas directly acts on the weighing scale when it passes through the pipeline. The stress on the balance is also in the order of μN, which cannot be ignored during the measurement, so the influence caused by the pipeline stress needs to be excluded.

[0036] S...

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Abstract

The invention provides a gravitational method micro-thrust measuring device and a method for eliminating stress interference of a pipeline in the measuring device. The gravitational method micro-thrust measuring device comprises a weighing balance (100), a movable frame (200), a spiral air pipe (300) and a fixed frame (400), the movable frame (200) is arranged on the weighing balance (100), and the movable frame (200) is connected with the fixed frame (400) through a spiral air pipe (300); the movable frame (200) comprises a thruster support (202). The thruster support is installed on the weighing balance to fix the thruster, the frame fixing mechanism fixed to the balance is additionally installed on the side face of the balance, and the spiral pipeline is additionally arranged between the thruster support and the frame fixing mechanism to reduce a contact pipeline of an external gas circuit and a balance tray, so that stress interference of the gas pipeline in measurement is reduced; and the method is suitable for a thrust rapid measurement occasion in a small-size working environment.

Description

technical field [0001] The present invention relates to the field of performance measurement of micro-propulsion systems, in particular to a method for eliminating pipeline stress interference in a gravity-based micro-thrust measurement device, especially a method for eliminating pipeline stress interference in a thrust measurement device for a micro-cow-level propulsion system in a narrow working space . Background technique [0002] With the continuous development of various micro-satellites, micro-thrusters suitable for micro-satellites to realize orbit transfer and attitude control have become an important research direction. This puts forward higher requirements for thrust measurement means. [0003] At present, there are mainly measurement devices for micro-thrust measurement such as balance structure, inverted pendulum structure, single pendulum structure, and twisted wire suspension torsion pendulum structure. Among them, the thrust measurement devices of the inver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01L5/12
CPCG01L5/00G01L5/12
Inventor 李林杭观荣郭曼丽李文帅徐伟峰乔彩霞李永策
Owner SHANGHAI INST OF SPACE PROPULSION