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Hypersonic flight vehicle preset performance control method and device based on disturbance estimation

A hypersonic, preset performance technology, applied in non-electric variable control, vehicle position/route/altitude control, attitude control, etc., can solve problems such as slow convergence speed, reduce complexity, simplify the design process, and improve convergence. The effect of speed and precision

Active Publication Date: 2022-01-28
NAVAL UNIV OF ENG PLA
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Problems solved by technology

However, the traditional performance function converges to the steady-state value in infinite time, and the convergence speed is slow

Method used

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  • Hypersonic flight vehicle preset performance control method and device based on disturbance estimation
  • Hypersonic flight vehicle preset performance control method and device based on disturbance estimation
  • Hypersonic flight vehicle preset performance control method and device based on disturbance estimation

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[0099] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0100] The present invention decomposes the preset performance control of the aircraft into a speed subsystem and an altitude subsystem through the rigid body model of the longitudinal motion of the hypersonic aircraft, thereby realizing the preset performance control of the hypersonic aircraft according to these two subsystems. The motion rigid body model is:

[0101]

[0102]

[0103...

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Abstract

The invention provides a hypersonic flight vehicle preset performance control method and device based on disturbance estimation. The method comprises steps of carrying out the control of the preset performance of a hypersonic flight vehicle based on a motion rigid body model of the hypersonic flight vehicle according to a finite time convergence preset performance function and a corresponding system error function; respectively determining conversion errors of a speed subsystem and a height subsystem in the model; and controlling the speed and height of the hypersonic aircraft according to the unknown interference item estimated value obtained by the interference observer and each conversion error so that a tracking error of the hypersonic aircraft meets preset transient and steady-state performance. According to the method, a convergence time value can be set according to system tracking performance requirements through a designed performance function, so the tracking error is converged to a steady-state value within a preset finite time, the convergence speed and precision are improved, a virtual instruction derivative item and a disturbance item are combined to be regarded as a total disturbance item, observation compensation is carried out, the design process of the controller is simplified, and complexity is reduced.

Description

technical field [0001] The present invention relates to the technical field of automatic control, in particular to a method and device for controlling preset performance of hypersonic aircraft based on disturbance estimation. Background technique [0002] Hypersonic aircraft is a new type of aircraft that flies at speeds above Mach 5 in adjacent space, and it has great application potential in both civil and military fields. At present, the research on hypersonic vehicle control technology has achieved certain results. [0003] The preset performance method has the unique advantage of being able to take into account both the transient and steady-state performance of the system, and has been widely used in the research of hypersonic vehicle control. However, the traditional performance function converges to the steady-state value in infinite time, and the convergence speed is slow. Therefore, in the application of the preset performance method, how to improve the dynamic pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/08
CPCG05D1/0833Y02T90/00
Inventor 李海燕韦俊宝萧耀友周源董海迪胡云安曾令东鲁琰袁天珺
Owner NAVAL UNIV OF ENG PLA
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