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Hypersonic aircraft trajectory tracking control method based on output information

A hypersonic, trajectory tracking technology, applied in vehicle position/route/altitude control, attitude control, control/regulation systems, etc., can solve the problems of complex algorithm, unestimable tracking time, poor robust performance, etc., to eliminate the system jitter effect

Active Publication Date: 2021-06-01
QUFU NORMAL UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problems of complex control algorithms, poor robustness and unestimable tracking time of the existing aircraft.

Method used

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  • Hypersonic aircraft trajectory tracking control method based on output information
  • Hypersonic aircraft trajectory tracking control method based on output information
  • Hypersonic aircraft trajectory tracking control method based on output information

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Embodiment Construction

[0052] Such as figure 1 Shown, the specific implementation steps of the present invention are as follows (below taking the hypersonic vehicle longitudinal model as an example to illustrate the specific implementation of the method):

[0053] 1) Using the input-output linearization technology, the longitudinal model of the hypersonic vehicle is transformed into an input-output model containing lumped disturbances (the sum of external disturbances and parameter uncertainties);

[0054] The longitudinal model of the hypersonic vehicle system is:

[0055]

[0056] Among them, V, h, α, γ, q represent the speed, height, angle of attack, track angle and pitch angle rate of the aircraft respectively; μ is the gravitational constant of the earth, r=h+R, R is the radius of the earth, M yy is the control torque, I yy is the moment of inertia, r=h+R e C L =0.6203α,C D =0.6450α 2 +0.0043378α+0.003772,C M (δ)=c e (δ E +d 2 (t)-α),

[0057] The second-order dynamic model...

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Abstract

A hypersonic flight vehicle trajectory tracking control method based on output information comprises the following steps: 1, converting a hypersonic flight vehicle longitudinal model into an input and output model containing lumped interference (the sum of external interference and parameter uncertainty) by using an input and output linearization technology; 2, according to the input and output model established in step 1, designing a fixed time expansion state observer to estimate unknown interference and the state of the input and output model; and 3, designing a fixed-time continuous terminal sliding mode surface based on the fixed-time extended state observer and the output value of the system, and further obtaining a fixed-time continuous terminal sliding mode trajectory tracking control scheme of the hypersonic aircraft system. According to the method, the system output can track the reference trajectory within a fixed time. The method is suitable for the field of hypersonic flight vehicle control.

Description

technical field [0001] The invention relates to a hypersonic vehicle track tracking control method based on output information, which is mainly applied in the technical field of hypersonic vehicle control. Background technique [0002] A hypersonic vehicle is an aircraft flying in near space with a speed greater than Mach 5. It has both the functions of a spacecraft and an aircraft, and is the main force for future space operations and global operations. It can be seen that the research on hypersonic vehicles has important military significance and is becoming the focus of research by various military powers. Hypersonic vehicles have the characteristics of fast speed, short reaction time, and strong penetration capabilities, so they can effectively carry out high-altitude and high-speed It can also conduct direct strikes on the enemy or be used as a weapon launch platform for long-distance raids, which greatly improves the ability of long-range combat. In addition, due to it...

Claims

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Application Information

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IPC IPC(8): G05D1/08G05D1/10
CPCG05D1/0808G05D1/101
Inventor 孙海滨侯林林宗广灯杨东
Owner QUFU NORMAL UNIV
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