Real-time judging method and real-time judging system for aircraft engine test safety parameter monitoring

Abstract

The invention relates to a real-time judging method and a real-time judging system for aircraft engine test safety parameter monitoring. The method comprises the following steps: building a multi-dimensional steady-state rated data table according to key parameters related to engine safety; updating the rated values of safety parameters in a steady-state process in real time according to the steady-state rated data table; determining the safety upper and lower limits of each parameter under corresponding conditions on the basis of the steady-state rated data table; giving value rules of the real-time upper and lower limits of safety parameters in a transition process; making judgment on engine test safety based on multi-parameter correlation analysis; judging whether the test channel of an overrun measuring point fails; calculating the rated values of safety parameters in a transition process in real time; and iteratively updating a two-dimensional rated value data table of safety parameters in a transition process. The system comprises a steady-state safety parameter table building function module, a transition-state safety parameter table building function module, and a real-time monitoring and alarm function module. An alarm or pre-alarm can be issued for failure of an aircraft engine effectively.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to a real-time discrimination method and system for monitoring safety parameters of aero-engine testing. Background technique [0002] Machine test is an important process of engine development. There are many classification methods for the whole machine test. According to the development stage of the whole machine, it can be divided into: principle prototype test, verification machine test, model machine test, etc. In the test process, it includes not only the ground assessment test, but also the performance debugging and assessment test of the high-altitude platform. However, due to many uncertainties in the test, especially in the development of the principle prototype, many characteristics of the engine before the engine test can not be completely simulated digitally, and many problems of strength, stress, transmission, and control may not yet be solved. Fully exposed,...

AI Technical Summary

Problems solved by technology

However, due to many uncertainties in the test, especially in the development of the principle prototype, many characteristics of the engine before the engine test can not be completely simulated digitally, and many problems of strength, stress, transmission, and control may not yet be solved. fully exposed, so it is extremely difficult to ensure the safety of the engine in the test

However, for a principle prototype, the research and development cost is huge, and once the test is damaged, the loss will be heavy. Therefore, it is very meaningful to ensure the safety of the tested engine while various tests are in progress.

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