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Self-adaptive fault-tolerant control method for hypersonic aircraft

A hypersonic, fault-tolerant control technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problem of not considering the influence of disturbance on it

Active Publication Date: 2019-12-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] Purpose of the invention: In order to solve the problems in the prior art that the disturbance is not considered when estimating the fault, the present invention provides an adaptive fault-tolerant control method for hypersonic aircraft

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Embodiment Construction

[0060] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0061] Such as figure 1 As shown, the present embodiment provides an adaptive fault-tolerant control method for a hypersonic vehicle, which specifically includes the following steps:

[0062] (a) Modeling the hypersonic vehicle system, while considering the dynamic impact of modeling uncertainties such as external disturbances on the system;

[0063] (b) Consider H ∞ Performance indicators, establish a robust adaptive observer, obtain the observer design conditions through Lyapunov stability analysis, and ensure that the estimation error of the observer is uniformly bounded under the condition of interference;

[0064] (c) Consider H ∞ Performance indicator...

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Abstract

The invention discloses a self-adaptive fault-tolerant control method for a hypersonic aircraft, and the method specifically comprises the steps: carrying out the modeling of a hypersonic aircraft system, and considering the dynamic impact on the system from the modeling uncertainty of external interference and the like; establishing a robust adaptive observer by considering an H-infinity performance index, obtaining a design condition through Lyapunov stability analysis, and ensuring estimation error convergence in the presence of interference. An active fault-tolerant controller is constructed, so that a fault system is stable, and a certain H-infinity performance requirement is met. A semi-physical simulation platform of the hypersonic aircraft is built, and the effectiveness of the proposed fault estimation and fault-tolerant control scheme is verified on the semi-physical simulation platform. According to the invention, the precision of the observer is improved, and the external interference is better inhibited.

Description

technical field [0001] The invention belongs to the field of automation technology and control, and in particular relates to an adaptive fault-tolerant control method for a hypersonic aircraft. Background technique [0002] At present, hypersonic aircraft are being applied more and more in military and civilian fields. Due to the particularity of hypersonic vehicle missions, the complexity of the flight environment and other factors, the requirements for the safety and reliability of airborne systems are getting higher and higher. If sensors, actuators or airframes fail, a hypersonic aircraft could be involved in a major accident. In order to improve the safety of hypersonic vehicles in my country, the controller, as its core component, has received great attention in the research on fault diagnosis and fault-tolerant control of actuators in hypersonic vehicle systems. [0003] Atmospheric turbulence is an important factor affecting the performance of hypersonic vehicles. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04G05B13/02
CPCG05B13/042G05B13/0265
Inventor 方一帆姜斌冒泽慧吕迅竤
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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