Aero-engine rotor run-out test system and rotor run-out determination method

Abstract

The invention provides an aero-engine rotor run-out test system, and the system comprises a plurality of laser displacement sensors which are disposed at the positions, close to a plurality of tested surfaces of a tested rotor, in a matched manner, so as to obtain the run-out signals of the plurality of tested surfaces; the one or more laser signal conditioners are connected with the plurality of laser displacement sensors and are used for conditioning optical signals of the laser displacement sensors into electric signals; the laser rotating speed sensor is arranged at a position matched with the key phase feedback module arranged on the measured rotor, and a phase signal of the measured rotor is obtained through the laser rotating speed sensor and the key phase feedback module; the data acquisition module is connected with one or more laser signal conditioners and the laser rotating speed sensor and is used for acquiring measurement data of the laser displacement sensor and the laser rotating speed sensor; and the data processing module is connected with the data acquisition module and is used for processing the signals acquired by the data acquisition module to obtain the vibration characteristic value of the tested rotor.

Description

technical field [0001] The application belongs to the technical field of aero-engine testing, and particularly relates to an aero-engine rotor runout test system and a rotor runout determination method. Background technique [0002] The aero-engine rotor dynamics test is used to study the holographic vibration characteristics of the rotor. In the dynamic test, the multi-section axial vibration test of the rotor is required. During the shaft vibration test, due to the different shaft installation of the coupling, the misalignment of the rotation center of the front and rear support of the rotor, the poor roundness of the measuring surface, the clearance of the sliding bearing and the minimum oil film thickness, the initial bending of the rotor, the non-concentricity of the test surface assembly and other factors Influence, the measured shaft vibration is superimposed with a beating interference signal with the same frequency as the fundamental frequency of the rotor and its m...

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide an aeroengine rotor runout test system and a rotor runout determination method to solve or alleviate at least one of the problems in the background technology

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