Performance attenuation law-based use performance self-adaptive adjustment method and system

Abstract

The invention belongs to the technical field of aero-engine starting control, and particularly relates to a using performance self-adaptive adjusting method and system based on a performance attenuation rule. The method comprises the steps that S1, the actual engine rotating speed and the engine inlet total temperature of an aircraft at a take-off point are obtained; s2, according to a preset total temperature tachometer, interpolating a current engine theoretical rotating speed, wherein the total temperature tachometer gives different engine inlet total temperatures and engine theoretical rotating speed values in one-to-one correspondence with the different engine inlet total temperatures; and S3, the exhaust limiting temperature of the engine is adjusted according to the set step length till the actual rotating speed of the engine is equal to the theoretical rotating speed of the engine. By properly increasing the engine control plan value, use performance reduction caused by engine performance degradation is compensated, and the use requirements of users are met.

Description

technical field [0001] The application belongs to the technical field of aero-engine start-up control, and in particular relates to a method and system for self-adaptive adjustment of service performance based on the law of performance attenuation. Background technique [0002] In the early days, due to the limitation of aero-engine design and processing and manufacturing level, the performance of the engine could only meet the user's index requirements, and there was basically no margin. Whether the performance of the engine met the user's needs was the main contradiction in the use process. With the continuous improvement of engine design and processing level, when the engine performance has a certain margin, the problem of engine performance attenuation has become the main contradiction in the use process. [0003] In the prior art, in order to ensure that all engines can be shipped from the factory, and the adjustment workload of the engine is as small as possible, in or...

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Problems solved by technology

[0003] In the prior art, in order to ensure that all engines can be shipped from the factory and the adjustment workload of the engines is as small as possible, in order to further improve the engine delivery capacity, the requirements for the factory performance of the engines are relatively wide, resulting in some engines The performance when leaving the factory is obviously higher than the required value. Although the high performance brings some advantages, the engine state of this type of engine is relatively high when used in the field, and the performance attenuation of the engine will increase accordingly, which is not conducive to the later stage of the field engine. usage of

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