Aero-engine surge active control system based on controller fuzzy switching

An active control system, aero-engine technology, applied in the direction of machine/engine, pump control, mechanical equipment, etc., can solve the problems of low reliability, insufficient adaptability, small working range, etc., to achieve stable work and expand effective work. range, the effect of improving the success rate

Active Publication Date: 2021-08-20
DALIAN UNIV OF TECH
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Problems solved by technology

[0004] Aiming at the problems of low reliability, insufficient adaptability and small working range in the active control method in the prior art, the present invention provides an aeroengine surge active control system based on controller fuzzy switching

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  • Aero-engine surge active control system based on controller fuzzy switching
  • Aero-engine surge active control system based on controller fuzzy switching
  • Aero-engine surge active control system based on controller fuzzy switching

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Embodiment Construction

[0075] The content of the present invention will be further described below in conjunction with the accompanying drawings and embodiments of the present invention.

[0076] An active control system for aero-engine surge based on controller fuzzy switching. The control system mainly includes three parts: basic controller design module, fuzzy switching module, and control signal fusion module. The design flow chart of the system is as follows: figure 1 shown.

[0077] figure 2 It is a structural schematic diagram of the aero-engine surge active control system based on controller fuzzy switching. It can be seen from the figure that the controller mainly includes three parts: fuzzy switching module, control signal fusion module and basic controller. Among them, the fuzzy switching module also includes three parts: state variable fuzzification, fuzzy rule reasoning, and defuzzification. The fuzzy switching controller generates the controller selection tendency c through the fu...

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Abstract

The invention discloses an aero-engine surge active control system based on controller fuzzy switching. The active control system is based on the fuzzy switching principle, according to the working state of a gas compressor, a basic controller most suitable for the current state is selected for switching control, and large-range, self-adaptive and performance-optimized surge active control can be achieved. According to the active control system, through a fuzzy switching mode, large-range surge active control is realized, the effective working range of the controller is expanded, and the reliability of the controller is improved; the designed controller can be suitable for active control over surge caused by various inducements, the self-adaptability of the controller is improved, and the controller is closer to the actual working condition of an engine; a certain optimization index is added in the design process of the controller, so that optimal control under a corresponding optimization target can be realized; and the needed control effect can be achieved by slightly changing an existing controller, and compared with an existing intelligent control method, the active control system is simpler, more convenient and easier to implement.

Description

technical field [0001] The invention belongs to the field of aero-engine modeling and control, and relates to an aero-engine surge active control system based on controller fuzzy switching. Background technique [0002] At present, high-performance aeroengines are developing towards high thrust-to-weight ratio, high speed, high reliability, etc., which also put forward higher requirements for the aerodynamic stability of the compressor. The increase in the thrust-to-weight ratio of high-performance engines leads to an increase in the single-stage pressure ratio of the compressor, and the load on the compressor is getting higher and higher, which makes the aerodynamic stability of the aero-engine more prominent and becomes one of the important factors limiting the development of the engine. In the traditional compressor surge control method, the core idea is to ensure sufficient surge margin at the operating point when designing the operating point of the compressor. In this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/02F02C9/16
CPCF04D27/02F02C9/16
Inventor 孙希明全福祥孙翀贻马艳华
Owner DALIAN UNIV OF TECH
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