Experimental Method of Fly-Sequence-Fly-Spectrum in Multi-channel Coordinated Loading System

Abstract

The invention discloses a multichannel coordinated loading system flight by flight spectrum experiment method which is technically characterized in that (1), during flight system simulation, the occurrence probability of an A working condition during first flight is e, wherein the e is larger than 0 and smaller than 1; (2), the occurrence probability of the A working condition during first flightis the e, because the e is smaller than 1, the A working condition is not simulated in the system for the first time, and this time the cumulative probability is e; (3), because the A working condition is not simulated in the first flight system, the probability of the A working condition during second flight is the sum e+e of the last cumulative probability and the original probability, namely 2*e; (4), the probability of the A working condition during third flight is the sum of the second cumulative probability and the original probability of the A working condition; (5), during the Nth flight, the total time of the A working conditions simulated before is an integer taken from N*e, the alpha is set as the time of the A working conditions, and the beta is decimal part of the N*e, that isalpha / N is approximately equal to the e. According to the multichannel coordinated loading system flight by flight spectrum experiment method, all working conditions of an aircraft in the flight process are fully simulated.

Description

technical field [0001] The invention relates to a fly-sequence fly spectrum experiment method of a multi-channel coordinated loading system. Background technique [0002] In the process of multi-channel coordinated loading test, especially for aircraft whole machine or component test, the data collected at the test site are mostly random data. According to the statistics and analysis of a large amount of data, various working conditions that occur frequently and occasionally can be obtained probability, then in order to simulate the actual situation as much as possible during the test, it is necessary to carry out the test according to the statistical data. [0003] If the above-mentioned statistical results can be perfectly completed, then the test can basically completely simulate various working conditions encountered during the flight. [0004] Existing tests basically use a fixed sine wave to do fatigue tests. Some advanced ones can compile some complex load block spec...

AI Technical Summary

Problems solved by technology

[0004] Existing tests basically use a fixed sine wave for fatigue tests. Some advanced ones can compile some complex load block spectra, and there is a big gap between the preparation and the actual working conditions, and the preparation process is also a complicated process. , the waste of time is also serious, and it is impossible for non-professional personnel to realize the preparation of the entire test. Therefore, it is imperative to use the fly-sequence flight spectrum obtained by the law of probability and statistics to directly program and load