Method for controlling stealth signal characteristics of aero-engine
A technology of aero-engine and signal characteristics, applied in the direction of adaptive control, comprehensive factory control, general control system, etc., can solve the problem of inability to accurately control the infrared and radar stealth performance of the engine
Pending Publication Date: 2022-08-05
AECC SHENYANG ENGINE RES INST
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[0050] In order to make the implementation purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application.
[0051] An aero-engine stealth signal feature method, aiming at engine stealth performance control, improves the classical PID control method, builds a multi-layer artificial neural network model, and adjusts the proportion, integral and differential through self-learning and error feedback of the multi-layer BP artificial neural network. The three control functions form a relationship of mutual cooperation and mutual restriction in the control quantities, and the optimal combination can be found from the changing nonlinear combination. The specific plan is as follows.
[0052] like figure 1 shown, including the following steps:
[0053] like figure 2 , ...
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The invention belongs to the field of aero-engine design, and relates to an aero-engine stealth signal feature control method, which comprises the following steps of: constructing a neural network, a PID (Proportion Integration Differentiation) controller and an engine stealth model, and forming an engine stealth feature control system based on the neural network; a neural network based on PID adjustment is constructed, the control quantity and the control object of an engine form closed-loop control, three parameters of a PID controller are set on line through the neural network, when stealth signal characteristics of the engine need to be controlled, only a target value needing to be reached needs to be input, and the stealth signal characteristics of the engine need to be controlled through any nonlinear expression capability of the neural network. According to the engine operation state and the stealth control requirement, the characteristic parameters are adjusted in an online self-adaptive mode, automatic learning of the neural network is achieved, the needed target value is achieved through continuous correction, stealth performance optimization control is finally achieved, and using is easy and stable.
Description
technical field [0001] The present application belongs to the field of aero-engine design, and in particular relates to a method for controlling stealth signal characteristics of an aero-engine. Background technique [0002] Excellent stealth capability can greatly improve the defense penetration capability and battlefield survivability of military aircraft, while the stealth performance of aero-engines is a key factor in whether an aircraft can achieve omnidirectional stealth, and it is also an important technical indicator of the fourth-generation and above advanced aero-engines. one. Aero-engine is a highly nonlinear, time-varying, complex aero-thermal system, and its working envelope is wide. In the working range, with the change of environmental conditions and operating conditions, the characteristics of the engine's infrared and radar stealth signals will change greatly. [0003] At present, the engine stealth signal characteristic control method has not been establi...
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Login to View More IPC IPC(8): G05B13/04
CPCG05B13/042Y02T90/00
Inventor 杨胜男邓洪伟王瑞祥王伟王群卢浩浩
Owner AECC SHENYANG ENGINE RES INST