Hypersonic aircraft high-safety anti-interference control method by considering attack angle limitation

A control method and hypersonic technology, applied in vehicle position/route/altitude control, attitude control, control/regulation system, etc., can solve the problem of inability to guarantee the angle of attack constraint a priori, relying on high-level full state measurement, etc., to achieve strong attack Corner safety constraint characteristics, the effect of achieving precise tracking control, and low online computational complexity

Active Publication Date: 2020-06-12
ZHONGBEI UNIV
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that most of the existing control methods rely on high-speed full-state measurement and the angle of attack constraint cannot be guaranteed a priori in complex flight environments, the present invention provides a high-safety anti-jamming control method for hypersonic aircraft considering the limited angle of attack

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  • Hypersonic aircraft high-safety anti-interference control method by considering attack angle limitation
  • Hypersonic aircraft high-safety anti-interference control method by considering attack angle limitation
  • Hypersonic aircraft high-safety anti-interference control method by considering attack angle limitation

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with specific examples.

[0037] A high-safety anti-interference control method for a hypersonic vehicle considering a limited angle of attack, comprising the following steps:

[0038] (1) Establish AHV longitudinal motion / dynamic model including external disturbance:

[0039]

[0040] Among them, V is velocity, h is altitude, γ is track inclination, α is angle of attack, Q is pitch angle velocity, Φ is throttle opening, δ e is the rudder deflection angle, f j and g j (j=V, γ, α, Q) denote the aggregate disturbance and AHV nominal dynamics, respectively, defined as follows:

[0041]

[0042]

[0043]

[0044]

[0045] Among them, m=300 and I yy =86722.54 represents the mass and moment of inertia of the aircraft respectively, g=1.41×10 16 represents the gravitational constant, Δ represents the perturbation of the aerodynamic coefficient, d ve = 1 means the external disturbance of the ...

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Abstract

The invention discloses a hypersonic aircraft high-safety anti-interference control method by considering attack angle limitation, and relates to the field of control of hypersonic aircrafts. The method comprises the following steps: firstly, establishing an AHV longitudinal motion / kinetic model containing external interference; secondly, constructing a full-loop matching / non-matching interferenceobserver for the height subsystem in combination with a minimum parameter learning neural network (MLPNN) and an extended state observer, and designing a minimum parameter learning neural network approximator for the speed subsystem so as to reconstruct an AHV flight state and multi-source interference online; and finally, introducing an obstacle Lyapunov function, and constructing an attack angle limited feedback controller, it is ensured that attack angle response is within a safe range, and accurate tracking control over a given height / speed instruction under an output feedback framework is achieved through interference estimation and compensation. The method solves the problems that most of existing control methods depend on hypersonic full-state measurement and attack angle constraints cannot be priori guaranteed in a complex flight environment.

Description

technical field [0001] The invention relates to the control field of hypersonic aircraft, specifically a high-safety anti-jamming control method for a hypersonic aircraft considering a limited angle of attack, which mainly solves the problem of safety and stability of a hypersonic aircraft in a complex flight environment considering the intake characteristics of a scramjet engine control issues. Background technique [0002] Hypersonic vehicle (AHV) has rapid response capability, strong penetration capability, strong destruction capability, high maneuverability and precision strike capability. It has the advantages of fast, long-range strike and high altitude, and can reach anywhere in the world within 1-2 hours. Complete containment and destruction of enemy targets. In terms of flight altitude, it exceeds the flight range of existing aircraft, reaching more than 30 kilometers, and can perform cruise flight in the near space at the edge of the atmosphere. [0003] The flig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/08
CPCG05D1/0825Y02T90/00
Inventor 邵星灵张文豪张文栋刘俊
Owner ZHONGBEI UNIV
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