A method for reconstruction, display and analysis of three-dimensional waterfall diagram of engine test data

Abstract

The invention belongs to the technical field of aerospace experiments, and particularly relates to a method for reconstructing, displaying and analyzing an engine test data three-dimensional waterfall plot. The method comprises the main steps of: 1, exporting a text-format file from an original three-dimensional waterfall plot of Desktop-Advanced software of LMS Test.Lab Rev; 2, reading amplitude column data in spectrum data from the text-format file; 3, storing the spectrum data as a two-dimensional array; and 4, reconstructing a three-dimensional waterfall plot and carrying out display and analysis, wherein an analysis method comprises analysis steps of extracting data by spectral slices, carrying out dynamic perspective viewing, carrying out data comparison and the like. By the method disclosed by the invention, the defects of display aliasing, fuzzy display effect and poor discrimination of spectrum data of a single-color three-dimensional waterfall plot automatically generated by Desktop-Advanced software of a current LMS Test.Lab Rev are overcome, and the problem of inconvenience for an operator to carry out analysis processing is solved.

Description

technical field [0001] The invention belongs to the technical field of aviation and aerospace tests, and in particular relates to a method for rebuilding, displaying and analyzing three-dimensional waterfall diagrams of engine test data. Background technique [0002] The analysis of three-dimensional vibration spectrum data after the rocket engine test is a necessary means for engine performance evaluation and fault diagnosis, and the three-dimensional three-dimensional waterfall diagram with time, frequency and amplitude as coordinates is a common spectrum analysis diagram. [0003] The current method of displaying the three-dimensional waterfall diagram in the LMS Test.Lab Rev software is as follows: 1. Start the Desktop-Advanced software of LMSTest.Lab Rev, and make a three-dimensional waterfall diagram for the collected data. 2. Manually drag any one of the N parameters (N>0) in the Name column under the Navigator view to the 1×1 3D waterfall display window, and the d...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems in the background technology, the present invention provides a method for rebuilding, displaying and analyzing the three-dimensional waterfall diagram of engine test data, which solves the display of the monochromatic three-dimensional waterfall diagram spectrum data automatically generated by the Desktop-Advanced software of the current LMS Test.Lab Rev The defects of aliasing, fuzzy display effect and weak discrimination have solved the problem that it is not convenient for operators to analyze and process

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