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Space momentum wheel bearing friction torque testing machine and its testing method

A technology of friction torque and momentum wheel, which is applied in the field of performance testing of momentum wheel, can solve the problems that cannot meet the requirements of reliability and life growth, and achieve the effect of shortening the research and development process

Active Publication Date: 2021-11-30
SHANGHAI JIAO TONG UNIV +1
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  • Description
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  • Application Information

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Problems solved by technology

[0002] The momentum wheel is an important actuator for attitude adjustment of space satellites. Facing the increasing demand for spacecraft attitude and orbit control performance, the traditional lubrication scheme of flywheel bearing components can no longer meet the requirements of reliability and life growth. main constraints

Method used

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  • Space momentum wheel bearing friction torque testing machine and its testing method
  • Space momentum wheel bearing friction torque testing machine and its testing method
  • Space momentum wheel bearing friction torque testing machine and its testing method

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Embodiment Construction

[0032] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0033] In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description, so as to illustrate the technical solution of the present invention. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed descriptions.

[0034] refer to figure 1 As shown, the present invention provides a kind of space momentum wheel bearing friction torque testing machine, and the test object of the testing...

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Abstract

The invention provides a space momentum wheel bearing friction torque testing machine and a testing method thereof, which is composed of a driving module and a torque module; the torque module includes a torque calibration block, a calibration shaft and a torque measuring device. When the testing machine is in the calibration mode, the calibration shaft is installed between the drive shaft and the torque measuring device, the drive shaft does not rotate, and only the axial torque M is applied by the torque calibration device 1 , and then the moment module loads the vertical moment M on the calibration axis 2 , to obtain the axial moment M obtained by the moment measuring device at this time 1 ’, according to different M 2 Lower M 1 and M 1 ’ to complete the calibration. In the measurement mode, the drive shaft rotates to drive the flywheel to rotate, and the torque module outputs the vertical torque M 2 And measured moment M 1 ’, according to the calibration results to obtain the actual axial friction torque M 1 , to effectively eliminate the moment M 2 errors in the measurement results. The invention can realize the simulation of the working condition of the momentum wheel in the attitude adjustment system of the space satellite, so as to carry out the friction torque measurement test on the momentum wheel.

Description

technical field [0001] The invention relates to a performance test of a momentum wheel, in particular to a space momentum wheel bearing friction torque testing machine and a testing method thereof. Background technique [0002] The momentum wheel is an important actuator for attitude adjustment of space satellites. Facing the increasing demand for spacecraft attitude and orbit control performance, the traditional lubrication scheme of flywheel bearing components can no longer meet the requirements of reliability and life growth. main constraints. Therefore, it is necessary to develop a momentum wheel bearing friction torque testing machine to study the variation of the momentum wheel bearing friction torque under long-term operating conditions. [0003] Considering comprehensively the characteristics of the low-vacuum working environment of the momentum wheel, the torque orthogonal to the rotating shaft during the working process, and the stationary flywheel rotation of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L3/04G01M13/04
CPCG01L3/04G01M13/04
Inventor 张执南陈实刘松恺蔡晓江
Owner SHANGHAI JIAO TONG UNIV
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