Control method for flight path of airship on stratosphere

A technology of stratospheric airship and control method, which is applied in the field of automatic control and can solve problems affecting the performance of the control system

Active Publication Date: 2012-10-31
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

For the uncertainties and external disturbances in the flight process, the sliding mode control method is usually used to design the trajectory control system in the existing literature. The sliding mode control is robust to parameter perturbation and external disturbances, but due to the Law switching back and forth between different control logics causes chattering, which affects control system performance

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  • Control method for flight path of airship on stratosphere
  • Control method for flight path of airship on stratosphere
  • Control method for flight path of airship on stratosphere

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Embodiment Construction

[0045] In order to make the purpose, technical scheme and advantages of the patent of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings:

[0046] Please refer to the attached figure 1 , figure 2, The present invention provides a method for controlling the trajectory of a stratospheric airship, which is used to control the trajectory of a stratospheric airship, which adjusts control parameters online through fuzzy rules to suppress buffeting and improve system performance. In order to illustrate the working principle of the present invention more clearly, the given command track is:

[0047] n d =[x d ,y d , ψ d ] T =[-500sin(0.01t), 500cos(0.01t), 0.01t] T

[0048] where x d 、y d 、ψ d They are the parameterized command X coordinate, command Y coordinate and command heading angle respectively. Please refer to the attached image 3 , the accompanying drawing i...

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Abstract

The invention discloses a control method for the flight path of an airship on the stratosphere. The control method comprises the following steps: firstly, giving out an instruction flight path of the airship; secondly, calculating an error margin e between the induction flight path of the airship and the actual flight path; thirdly, selecting a sliding mode surface s and a reaching law, designing a sliding mode control law and calculating the system control amount tau; and fourthly, designing a fuzzy controller with the sliding mode surface s as an input of the fuzzy controller and with a control parameter as an output of the fuzzy controller and adjusting the control parameter according to a fuzzy rule. According to the control method, the induction flight path can be stably tracked, the problem of buffeting caused by sliding mode control is solved, favorable robustness and dynamic performance are realized and an effective scheme is provided for designing a flight path control system of the airship on the stratosphere.

Description

technical field [0001] The invention relates to a flight control method in the field of aerospace and aviation, in particular to a method for controlling the track of a stratospheric airship, which belongs to the technical field of automatic control. Background technique [0002] Stratospheric airship refers to an aircraft that uses buoyant gas (helium) to provide static lift, and relies on the control system and propulsion system to stay at a fixed point in the stratosphere airspace and maneuver at low speed. With the advantages of high ratio, good stealth performance, and strong survivability, it can be widely used in reconnaissance and surveillance, theater early warning, communication relay, environmental monitoring, emergency disaster relief, scientific detection and other fields. It has important commercial and military application value, and has become a Research hotspots in the field of aviation. The overall layout, flight mechanism, and working mode of the stratosp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/10
Inventor 郑伟杨跃能邹东升吴杰
Owner NAT UNIV OF DEFENSE TECH
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