Large-envelope flight interference estimation method and device

A technology of interference estimation and envelope, applied in the field of large envelope flight interference estimation, can solve the problem that rigid aircraft cannot apply the flight dynamics characteristics of elastic aircraft

Active Publication Date: 2018-09-28
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the analysis method of the rigid aircraft in the prior art can

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[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention

[0033] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[003...

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Abstract

The invention belongs to the field of automatic control technology and particularly relates to a large-envelope flight interference estimation method and device. The large-envelope flight interferenceestimation method and device aim to solve the problem that in the prior art, an analysis method for a rigid aircraft cannot be applied to analysis of flight dynamic characteristics of an elastic aircraft. The large-envelope flight interference estimation method comprises the steps that an input signal and an output signal of a large-envelope aircraft are acquired respectively, fast Fourier transformation signal analysis is performed on the input signal and the output signal, division operation is performed on the signals obtained through analysis, and a Bode plot of the output signal to the input signal is obtained; a sub-region image in the Bode plot is extracted; and the sub-region image of the Bode plot is input into a convolutional neural network model for recognition, and the category of the sub-region image of the Bode plot is obtained to complete large-envelope flight interference estimation. Through the method, a vibration mode offline learning mechanism of a deep learning mechanism and an online robust flexible identification mechanism can be formed, and online measurement and calculation of elastic feature parameters are realized.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a method and device for large-envelope flight interference estimation. Background technique [0002] As the mission scope of the aircraft continues to expand, its flight envelope becomes larger and larger. Usually the aircraft flies in the atmosphere (within 20,000 meters) and near the edge of the atmosphere (20,000 meters to 100,000 meters), and its flight speed ranges from high subsonic speed to hypersonic speed above Mach 5, and the flight speed varies greatly , the dynamic characteristics of the aircraft also change greatly, so during its flight, the performance parameters of the aircraft, such as structural elasticity, cannot be ignored, and the design of the flight control law has a significant impact on the performance parameters of the aircraft. The control law design method of the aircraft is to meet the flight quality requirements of the aircraft ...

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Application Information

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IPC IPC(8): G06F17/50G06K9/00G06N3/04
CPCG06F30/15G06F30/20G06N3/045G06F2218/08Y02T90/00
Inventor 范国梁袁如意刘振刘朝阳
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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