Bearing capacity calibration method of dynamic pressure thrust gas bearing

A technology of gas bearing and calibration method, which is used in bearing-related force sensors, mechanical bearing testing, force/torque/work measuring instruments, etc., to achieve the effect of quick calibration process and comprehensive calibration data

Active Publication Date: 2022-06-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a method for calibrating the bearing capacity of a dynamic pressure thrust gas bearing. Design and Selection Difficulties of Pressure Thrust Gas Bearings

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  • Bearing capacity calibration method of dynamic pressure thrust gas bearing
  • Bearing capacity calibration method of dynamic pressure thrust gas bearing
  • Bearing capacity calibration method of dynamic pressure thrust gas bearing

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Embodiment Construction

[0037] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0038] The embodiment of the present invention provides a bearing capacity calibration method of a dynamic pressure thrust gas bearing 1, and the bearing capacity calibration method adopts a bearing capacity calibration system to realize the bearing capacity calibration, such as Figure 7 As shown, the bearing capacity calibration method specifically includes the following steps:

[0039] The first step is to start the bearing capacity calibration system: install the dynamic pressure thrust gas bearing 1 to be calibrated, turn on the power supply, make all parts of the bearing capacity calibration system energize and start, and set the load of the load application device 11 to zero, The rotor driving device 10 is set as the initial speed, and the initial speed can be determined according to the actual situation, such as: the initial calibration speed ex...

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Abstract

The invention discloses a bearing capacity calibration method of a dynamic pressure thrust gas bearing. The calibration method comprises the following steps: starting a bearing capacity calibration system; the current friction torque of the dynamic pressure thrust gas bearing is measured through a monitoring device; continuously increasing the load; according to the real-time friction torque measured by the monitoring device, the contact state of the dynamic pressure thrust gas bearing and the thrust plate is judged by the control device every preset time interval; if not, the current rotating speed, load, friction torque and the distance between the thrust plate and the bearing bottom plate are stored by the control device; if so, immediately reducing the applied load of the load applying device; comparing the current rotating speed of the rotor driving device with the final calibration rotating speed, and if the rotating speed reaches the final calibration rotating speed, drawing a calibration curve by using a least square method; and if not, increasing the rotating speed of the rotor driving device. According to the calibration method, the bearing capacity of the bearing can be calibrated without manual participation, and the problems of design and model selection of existing bearings are solved.

Description

technical field [0001] The invention relates to the technical field of gas bearings, in particular to a bearing capacity calibration method of a dynamic pressure thrust gas bearing. Background technique [0002] Dynamic thrust gas bearings have been widely used in new energy vehicles, aerospace, low temperature refrigeration and other fields due to their advantages of no pollution, low friction resistance, long operating life and no need for additional gas supply systems. The bearing capacity of the dynamic pressure thrust gas bearing is one of the important parameters of the bearing, but the bearing capacity of the dynamic pressure thrust gas bearing is greatly affected by the rotational speed and the air film gap, and there is a certain nonlinear relationship, which is difficult to obtain by simple calculation. [0003] like figure 1 As shown, the dynamic pressure thrust gas bearing 1 includes a foil 2 and a bearing base plate 3 , wherein the foil 2 includes a corrugated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01M13/04
CPCG01L5/0009G01M13/04
Inventor 应铭刘兴华张崇炳张越张正王鑫扬刘宇航
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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