Dynamic detection method for simulating angular contact ball bearings in meteorological satellite scanning mechanism

Abstract

Provided is a dynamic detection method for simulating angular contact ball bearings in a meteorological satellite scanning mechanism. A detection process is achieved through four groups of test unit assemblies and magnetic fluid seal transmission assemblies in a detection device, paired angular contact ball bearings, namely a first angular contact ball bearing and a second angular contact ball bearing, are assembled in the four test unit assemblies, a molecular pump and a mechanical pump in the detection device can provide a high vacuum degree of 10-5Pa, the environment temperature is controlled to be within the range from the normal temperature to 50 DEG C, a servo motor provides continuous rotation and reciprocating swinging for the four groups of test unit assemblies, a computer monitoring program sends parameter request commands of the swinging speed, the swinging angle and the rotating speed of the servo motor in the detection process, meanwhile real-time detection is carried out by the computer monitoring program on the four groups of paired angular contact ball bearings in the four groups of test unit assemblies according to set detection contents in advance, and scientific, real and reliable monitoring bases are provided for evaluation of dynamic simulation performance or the service life of the angular contact ball bearings in a meteorological satellite.

Description

[0001] technical field [0002] The invention belongs to the technical field of bearing tests, and in particular relates to a dynamic detection method for an angular contact ball bearing in a scanning mechanism of a simulated meteorological satellite. [0003] Background technique [0004] As an important component of the meteorological satellite remote sensing system, the scanning mechanism is mainly used for the acquisition of meteorological image information. The quality and reliability of the angular contact ball bearing used in the scanning mechanism will directly affect the image quality and operating life of the entire remote sensing system. Angular contact ball bearings usually use ultra-precision angular contact ball bearings and are installed in pairs. Because the paired angular contact ball bearings swing back and forth in space for about 1 billion times and withstand high and low temperature alternation, vacuum, weightlessness, radiation, etc. Under harsh ...

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Problems solved by technology

[0005] In order to improve the design level and product quality of angular contact ball bearings in meteorological satellite scanning mechanisms, it is necessary to perform simulated dynamic testing on angular contact ball bearings. The simulated dynamic testing provides real and effective reference data for product design and theoretical analysis of angular contact ball bearings. The dynamic test method of the angular contact ball bearing in the scanning mechanism of the simulated meteorological satellite has not been reported so far

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