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Flight control method of deformable unmanned aerial vehicle

A flight control and drone technology, applied in three-dimensional position/channel control and other directions to achieve the effect of stable flight

Active Publication Date: 2012-10-10
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In the prior art, the parameters of the deformed UAV are generally set according to the controller tuning method of the commonly used fixed-wing aircraft, which has certain limitations, because the dynamic characteristics of the aircraft itself have undergone a large change in the deformed state, and it is necessary to A more comprehensive investigation of the changes in various flight conditions faced by the controller can design a robust controller
At present, there is no control method for the UAV to continue to fly stably after the wings of the deformable UAV are stretched and deformed.

Method used

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  • Flight control method of deformable unmanned aerial vehicle
  • Flight control method of deformable unmanned aerial vehicle

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Embodiment Construction

[0031] In the present invention, the deformable UAV can adopt the aerodynamic layout of canard retractable forward-swept wing and single vertical tail. High-speed cruise adopts a small aspect ratio layout, and low-speed cruise adopts a large aspect ratio layout. Pitch control is achieved through full motion canards. The shape and size of the main wing and the outer wing are determined based on the requirements of flight stability, maneuverability, launch and recovery.

[0032] The flight control computer collects the analog signals, digital signals and discrete signals of each device. According to the control law and control strategy, the deflection of the control surface is controlled, the expansion and deformation of the wings of the UAV and the working state of the engine are realized, so that the aircraft can fly according to the predetermined flight trajectory. And various information such as flight attitude, altitude, position and engine working status are encoded and ...

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Abstract

The invention provides a flight control method of a deformable unmanned aerial vehicle. The deformable unmanned aerial vehicle has a canard type telescopic forward-swept wing and single vertical fin aerodynamic arrangement; according to the adjustment and analysis of a root-locus method, a high-low speed deformable unmanned aerial vehicle can perform the adjustment on parameters of a controller through a design method of a low-speed controller, and therefore the design requirement on the controllers under two flight speeds can be met. Matching the deformation time and the control time of an engine is part of a control strategy of the deformable unmanned aerial vehicle; and as shown in the analysis of the flight mechanics design, the thrust of the engine is changed prior to implementing the process and the strategy under the deformation time.

Description

Technical field [0001] The invention provides a flight control method of a deformable unmanned aerial vehicle, which belongs to the field of controller design and control strategy in a flight control system, and is mainly applied to the deformation control of a deformable unmanned aerial vehicle. Background technique [0002] Transformable drones are the direction of development of a new generation of drones. Traditional aircraft adopt methods of changing the shape of the wing, such as changing the sweep angle and changing the camber of the airfoil, to adapt to different flight states such as take-off and landing, cruising and high-speed flight, and strive to obtain more ideal performance. However, this approach has complex mechanisms, limited functions, and low efficiency, and it is difficult to adapt to the requirements of a wider range of flight environment changes (such as speed, climate, altitude, etc.), resulting in limited application of traditional UAVs. The deforma...

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Application Information

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IPC IPC(8): G05D1/10
Inventor 苏浩秦
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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