Coordination control method for hypersonic flight vehicle based on dynamic coupling analysis

A hypersonic and dynamic coupling technology, which is applied in the field of aerospace control, can solve problems such as insufficient attention to coupling problems and reduced performance of flight coordination control

Active Publication Date: 2019-08-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

At present, some scholars and research institutions have done in-depth research on the flight control problem, but they have not paid enough attention to the coupling problem
The existing coupling relationship descriptions are mostly linear and maintain a constant value during th

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  • Coordination control method for hypersonic flight vehicle based on dynamic coupling analysis
  • Coordination control method for hypersonic flight vehicle based on dynamic coupling analysis
  • Coordination control method for hypersonic flight vehicle based on dynamic coupling analysis

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Embodiment Construction

[0125] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0126] Such as figure 1 As shown, a hypersonic vehicle coordinated control method based on dynamic coupling analysis includes the following steps:

[0127] (1) Establish a hypersonic vehicle longitudinal system model;

[0128] The established hypersonic vehicle longitudinal system model is as follows:

[0129]

[0130] Among them, H, V, γ, α, and q are the altitude, velocity, track inclination angle, attack angle, and pitch rate of the hypersonic aircraft respectively; z is the z-axis coordinate of the aircraft center of mass projected to the ground coordinate axis system, and M is the aircraft mass, g is the acceleration due to gravity, I yy is the moment of inertia along the y-axis, L, D, T are lift, drag and thrust respectively, m is the pitching moment; the specific expression is:

[0131]

[0132] in, ...

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Abstract

The invention discloses a coordination control method for a hypersonic flight vehicle based on dynamic coupling analysis. The method includes the following steps: establishing a longitudinal system model of the hypersonic flight vehicle; bringing forward a dynamic coupling analysis method of the hypersonic flight vehicle for flight characteristics of the hypersonic flight vehicle; applying the dynamic coupling analysis method of the hypersonic flight vehicle to the longitudinal system model of the hypersonic flight vehicle to obtain a dynamic coupling relationship matrix between a trajectory variable, an attitude variable and a control input variable; and designing a longitudinal system coordination controller of the hypersonic flight vehicle. The method starts from a system dynamic equation, and the obtained coupling relationship matrix is nonlinear and dynamic, which reflects a coupling situation more comprehensively and objectively under an actual flight condition.

Description

technical field [0001] The invention relates to the technical field of aerospace control, in particular to a hypersonic vehicle coordinated control method based on dynamic coupling analysis. Background technique [0002] It is generally believed that greater than 5M a The aircraft flying at high speed is called hypersonic aircraft, which has the advantage of "occupying space and space". It is currently one of the important technical fields that the world's military powers are actively investing in research. However, due to its harsh flight environment, complex nonlinear characteristics, and serious nonlinear coupling of its internal variables, it greatly increases the difficulty of flight control and even threatens flight safety. Therefore, in order to improve the flight quality, it has become a research hotspot and difficulty to study the coupling characteristics among the variables of the hypersonic vehicle, and to design a coordinated control system to deal with the coup...

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Application Information

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IPC IPC(8): G05D1/08G05D1/10
CPCG05D1/0808G05D1/101
Inventor 王玉惠冯星凯吴庆宪张晓辉侯思远徐超
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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