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Hypersonic aircraft attitude control method based on preset performance

A technology with ultra-high sound speed and preset performance, which is applied in attitude control, vehicle position/route/height control, control/regulation system, etc., and can solve problems such as poor stability and transient performance

Active Publication Date: 2020-10-27
NAVAL UNIV OF ENG PLA
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  • Application Information

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Problems solved by technology

[0004] In order to overcome the above-mentioned problems of poor stability and transient performance of the attitude control of hypersonic aircraft or at least partially solve the above problems, embodiments of the present invention provide an attitude control of hypersonic aircraft based on preset performance method

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  • Hypersonic aircraft attitude control method based on preset performance
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Embodiment Construction

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

[0018] see figure 1 , providing a hypersonic vehicle attitude control method based on preset performance, the method comprising:

[0019] Based on the re-entry attitude motion model of the hypersonic vehicle, a preset performance function of the attitude control of the hypersonic vehicle is set, and an error transformation function is set according to the preset performance function;

[0020] Designing a controller to control the attitude of the hypersonic vehicle according to the error transformation fun...

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Abstract

The embodiment of the invention provides a hypersonic aircraft attitude control method based on preset performance. Aiming at a three-degree-of-freedom reentry attitude motion model of a hypersonic aircraft, an inversion control scheme based on preset performance is designed; the influence of uncertainty and external disturbance on a control system is considered, a linear extended observer (LESO)is constructed for observation and feedback compensation disturbance; and a controller is designed on the basis of the preset performance and inversion control. According to the technical schemes provided by the embodiment of the invention, under the condition that system disturbance can be rapidly observed and compensated, rapid and stable tracking of an attitude control instruction is realized,and it is ensured that the full state of a system meets preset transient and steady state performance.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to an attitude control method of a hypersonic aircraft based on preset performance. Background technique [0002] Compared with the traditional aircraft control system, the hypersonic aircraft control system has the characteristics of strong nonlinearity, strong coupling, fast time-varying, uncertain, non-minimum phase, etc., which brings many challenges to its controller design. [0003] The attitude control of hypersonic aircraft and the flight of the aircraft are very serious. In order to keep the attitude of the aircraft stable, the traditional control method controls the attitude of the aircraft to a stable state, and the control time is very long; in addition, because the target of the stable state is not clear , therefore, in the process of control, it takes a long time to try, and the steady-state performance of the control is relatively poor. Content...

Claims

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Application Information

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IPC IPC(8): G05D1/08G05D1/10
CPCG05D1/0808G05D1/101
Inventor 李海燕韦俊宝李静王斌袁胜智李敏董海迪付嘉祺
Owner NAVAL UNIV OF ENG PLA