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Aero-engine acceleration control real-time optimization method and device based on prolonging control

A technology of aero-engine and acceleration control, applied in engine control, engine function, gas turbine device, etc., can solve the application problems of life extension control, and achieve the effect of high life

Active Publication Date: 2018-08-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The above optimization problems have achieved certain results in the acceleration optimization of aero-engines, but have not been applied in life extension control

Method used

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  • Aero-engine acceleration control real-time optimization method and device based on prolonging control
  • Aero-engine acceleration control real-time optimization method and device based on prolonging control
  • Aero-engine acceleration control real-time optimization method and device based on prolonging control

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Embodiment Construction

[0028] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0029] The invention aims at the thermomechanical fatigue phenomenon of the aeroengine in the acceleration process, by considering the influence of the life of the turbine blades during the acceleration optimization, and in the acceleration control process of the aeroengine, by reducing the thermomechanical fatigue of the aeroengine in the acceleration process to improve Aircraft engine life. The invention not only enables the aero-engine to have a faster response in the acceleration process, but also has a longer service life.

[0030] Before the accelerated optimization problem is established, the thermomechanical fatigue model of the turbine guide vane is established first, as follows:

[0031] Aeroengines are composed of a large number of components, which are subject to varying degrees of loss during engine operation, especially hot end components...

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Abstract

The invention discloses an aero-engine acceleration control real-time optimization method based on prolonging control. According to the method, in the acceleration control process of an aero-engine, the service life of the aero-engine is prolonged by reducing the thermal mechanical fatigue of the aero-engine in the acceleration process. The invention further discloses an aero-engine acceleration control real-time optimization device based on prolonging control. Compared with the prior art, the an aero-engine acceleration control real-time optimization method and device based on prolonging control have the beneficial effects that the effect of the thermal mechanical fatigue subjected by aero-engine blades is taken into consideration in the acceleration process, in the acceleration optimization purpose, rapid responding of the engine is taken into consideration, and moreover, the thermal mechanical fatigue life of the blades is guided into a target function. Thus, the engine can achieverapid responding, and meanwhile relatively long service life is achieved.

Description

technical field [0001] The invention relates to a real-time optimization method and device for aero-engine acceleration control based on life extension control. Background technique [0002] In the design process of the traditional aero engine control system, the priority is given to maximizing the performance of the engine, while less consideration is given to the life of the engine. During most of the flight process of the aircraft, except in emergency situations, the acceleration performance of the engine can be appropriately reduced to improve the life of the engine. , Reduce maintenance times and reduce maintenance costs. Based on this idea, NASA proposed Life Extending Control (LEC, Life Extending Control) in the 1990s and applied it to rocket launch. Wiseman M W et al. explained the common methods of engine life extension control, and Guo T H et al. introduced life extension control The basic structure and key technologies that need to be solved. Carl F et al. appli...

Claims

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Application Information

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IPC IPC(8): F02C9/00
CPCF02C9/00F05D2260/941F05D2270/11F05D2270/114
Inventor 郑前钢陈浩颖李永进刘明磊席志华胡忠志李秋红张海波
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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