Actually measured vibration data processing method and system

Abstract

The invention belongs to the technical field of data processing, and relates to an actually measured vibration data processing method and system. The method comprises the following steps: acquiring apreset sampling rate and an interception length parameter, and acquiring a plurality of original vibration data transmitted by each sensor channel of an airplane; intercepting data according to the interception length and a set step length in each flight state time period in each original vibration data; determining first intercepted data, wherein the first intercepted data is intercepted data with the maximum time domain amplitude mean value in each flight state time period in each original vibration data; and performing Fourier transform on the first intercepted data to obtain second intercepted data. According to the method and the device, the intercepted time domain data is subjected to frequency domain conversion by intercepting the data and drawing the time domain curve, and the frequency domain data is automatically classified and stored and the frequency domain curve is drawn, so that all the intercepted data can be conveniently concluded according to a conclusion method subsequently. While the precision is ensured, the data processing efficiency is improved by nearly two orders of magnitudes.

Description

technical field [0001] The present application belongs to the technical field of data processing, and in particular relates to a method and system for processing measured vibration data. Background technique [0002] The inductive processing of aircraft actual measurement data is an important means to carry out the analysis of actual measurement data, but it is also a very large task, which is mainly reflected in the following aspects. First, it is difficult to read data, and the number of data lines collected by high sampling rate sensors Most of the software cannot read or read slowly. Taking the sensor sampling rate of 12.8K as an example, the number of data lines in the 3-hour flight time exceeds 100 million lines, and some software takes a long time to read. requirements; secondly, data interception is difficult, because the data is long and difficult to locate, and data interception is very difficult; thirdly, the operation process is too complicated. When divided acco...

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Problems solved by technology

[0002] The inductive processing of aircraft actual measurement data is an important means to carry out the analysis of actual measurement data, but it is also a very large task, which is mainly reflected in the following aspects. First, it is difficult to read data, and the number of data lines collected by high sampling rate sensors Most of the software cannot read or read slowly. Taking the sensor sampling rate of 12.8K as an example, the number of data lines in the 3-hour flight time exceeds 100 million lines, and some software takes a long time to read. At the same time, it puts forward higher requirements for computer performance requirements; secondly, the data interception is difficult, because the data is long and difficult to locate, the data interception is very difficult; thirdly, the operation process is too complicated, and when divided according to the flight status such as driving on the ground, rolling, and taking off, a single channel needs to intercept more than a dozen segments. When the number of channels and flight landings are relatively large, the number will appear very large, and the manual processing process is very cumbersome; finally, the inductive processing of the power spectral density needs to be done manually, which takes a long time

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