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Hypersonic aircraft anti-interference backstepping control method considering input limitation

A hypersonic, backstepping control technology, applied in adaptive control, general control system, non-electric variable control, etc.

Pending Publication Date: 2020-07-03
HUNAN AIRTOPS INTELLIGENT TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

But the general approximation properties of neural networks / fuzzy systems are only valid on a given bounded closed region

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  • Hypersonic aircraft anti-interference backstepping control method considering input limitation
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  • Hypersonic aircraft anti-interference backstepping control method considering input limitation

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Embodiment 1

[0053] An anti-jamming backstepping control method for hypersonic aircraft considering input limitation, including the following steps:

[0054] Step 1: Take the parameter uncertainty, unmodeled dynamics and external disturbances in the mathematical model of the hypersonic vehicle's unpowered reentry process together as the total disturbance, and establish the mathematical model of the hypersonic vehicle's attitude loop and angular rate loop , And write the mathematical model of each loop into a form suitable for the design of the control method; specifically, write the mathematical model of the attitude loop and angular rate loop into a form suitable for the design of anti-interference backstepping control methods.

[0055] The mathematical model of the unpowered reentry process of the hypersonic vehicle can be written as the following formula (a):

[0056]

[0057] Among them: α, β, μ, γ are the aircraft's angle of attack, sideslip angle, pitch angle and track angle respectively; p...

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Abstract

The invention provides a hypersonic aircraft anti-interference backstepping control method considering input limitation. The hypersonic aircraft anti-interference backstepping control method comprisesthe steps of 1, establishing models of an attitude loop and an angular rate loop; 2, designing a preset performance function to constrain steady-state and transient-state performances of state variable tracking errors of an attitude loop and an angular rate loop of an aircraft; 3, designing a high-gain extended state observer, and obtaining an output estimation value and a total disturbance estimation value of each loop; and 4, designing a disturbance compensation control method based on the framework of a backstepping method so as to enable the tracking error of the system to be converged toa preset region under the condition of facing input saturation constraints. Tracking control over the attitude loop and the angular rate loop of the hypersonic aircraft is achieved, the dynamic performance and the steady-state performance of the whole control system are improved through the preset performance control method, and the anti-interference performance and the robustness of the whole system are improved through the design of an observer.

Description

Technical field [0001] The invention relates to the technical field of hypersonic aircraft control, in particular to an anti-interference and backstepping control method for hypersonic aircraft considering input limitation. Background technique [0002] Hypersonic aircraft refers to aircraft, missiles, artillery shells and other winged or wingless aircraft that fly at speeds above five times the speed of sound. It combines the advantages of traditional aircraft and spacecraft and is currently the research focus of major powers in the world. However, hypersonic aircraft has the characteristics of large flight envelope, highly nonlinear model, and uncertain parameters, and the flight environment is complex, and there are unpredictable interference and uncertain factors during the flight, which brings a lot to the design of the controller. Difficulties. [0003] Traditional PID control is widely used in the control of hypersonic aircraft due to its simple structure. However, the PID ...

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Application Information

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IPC IPC(8): G05B13/04G05D27/02
CPCG05B13/042G05B13/048G05D27/02
Inventor 罗世彬吴瑕
Owner HUNAN AIRTOPS INTELLIGENT TECH CO LTD
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