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Axial force testing method and device of squirrel-cage elastic support, electronic equipment and medium

A test method and technology of axial force, which is applied in the direction of measuring device, engine test, machine/structural component test, etc., and can solve problems such as rotor axial force and difficult coupling signals

Active Publication Date: 2021-07-30
AECC HUNAN AVIATION POWERPLANT RES INST
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Problems solved by technology

[0004] On the one hand, the embodiments of the present application provide a method for testing the axial force of a squirrel-cage spring to solve the technical problem that it is difficult to obtain an accurate axial force of the rotor from the coupling signal obtained by the stress sensor test in the prior art

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  • Axial force testing method and device of squirrel-cage elastic support, electronic equipment and medium
  • Axial force testing method and device of squirrel-cage elastic support, electronic equipment and medium
  • Axial force testing method and device of squirrel-cage elastic support, electronic equipment and medium

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[0055] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0056] refer to figure 1 , the preferred embodiment of the present application provides a method for testing the axial force of a squirrel-cage spring, comprising steps:

[0057] S1. Time-domain signals measured by at least one pair of stress sensors (such as figure 2 Shown) for time-domain analysis, decomposed to obtain the components that characterize the fundamental frequency (such as image 3 shown), wherein the at least one pair of stress sensors is located on the same cross-section of the squirrel-cage spring, and each pair of stress sensors is arranged symmetrically around the axis of the squirrel-cage spring;

[0058] S2. Perform Wigner analysis on the component representing th...

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Abstract

The invention discloses an axial force testing method and device for a squirrel-cage elastic support, electronic equipment and a medium. The method comprises steps of S1, time domain analysis being conducted on time domain signals measured by a stress sensor to obtain fundamental frequencies; S2, analyzing the fundamental frequency to obtain a sampling moment T corresponding to a fundamental frequency peak value; S3, extracting a strain value measured at a sampling moment T from the time domain signal; S4, solving and separating an axial force strain response value corresponding to the axial force of each measurement point and a radial force strain response value corresponding to the radial force from the strain values based on the measurement position of the stress sensor and the coupling relation of the axial force and the radial force to the strain response of the measurement point; S5, performing static calibration according to the linear relation between the axial force strain response value of each measurement point and the axial force to obtain the axial force corresponding to each measurement point; and S6, calculating the average value of the axial forces obtained at the measuring points to obtain the axial force. The device can be directly used for testing the axial force of the elastic support and bearing integrated bearing.

Description

technical field [0001] The present application relates to the technical field of engine testing, and in particular, relates to an axial force testing method, device, electronic equipment and medium of a squirrel-cage spring. Background technique [0002] At present, the use of squirrel-cage springs to support the rotor system is widely used in aero-engines. In modern aero-engines, it is necessary to monitor the axial force of the rotor system from time to time to ensure that the bearings work within the normal range of axial force. Existing There are two main ways to realize the axial force test. One is indirect measurement, that is, the axial force on the rotor system is obtained through aerodynamic load calculation. This requires the arrangement of more aerodynamic parameter measurement points in the engine, and there is a certain error; the other is direct measurement, and the most widely used method is to use force ring measurement. This method has high precision, but in...

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Application Information

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IPC IPC(8): G01L5/16G01M15/00
CPCG01L5/16G01M15/00
Inventor 刘国栋银越千宋双文贺象杨庆长李永建
Owner AECC HUNAN AVIATION POWERPLANT RES INST
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