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A control method for fixed-point landing of unmanned aerial vehicles

A control method and unmanned aerial vehicle technology, applied in the field of flight control, can solve problems such as difficult and high-precision fixed-point landing, and achieve the effects of fixed-point landing control, self-balancing effect, and high-precision fixed-point landing control

Active Publication Date: 2022-05-06
CHENGDU AIRCRAFT INDUSTRY GROUP
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Problems solved by technology

[0004] The purpose of the present invention is to provide a control method for fixed-point landing of UAVs to solve the technical problem that it is difficult to achieve high-precision fixed-point landing due to the strong coupling between the pitch angle and the height trajectory during the landing and glide of the UAV.

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  • A control method for fixed-point landing of unmanned aerial vehicles
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Embodiment Construction

[0015] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] The features of various aspects of the embodiments of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be pra...

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Abstract

The invention belongs to the technical field of flight control, and discloses a control method for fixed-point landing of a small fixed-wing unmanned aerial vehicle. This control method not only solves the problem of strong coupling between the height trajectory and the pitch attitude during the landing and glide of the fixed-wing UAV, but also realizes the fixed-point landing control Airspeed self-trimming during glide flight is achieved in case of inaccurate performance data. This control method has verified its correctness and feasibility in the actual flight of a 40kg small UAV, and achieved a high-precision fixed-point landing control effect.

Description

technical field [0001] The invention belongs to the technical field of flight control, and relates to the automatic landing flight control of an unmanned aerial vehicle, in particular to a control method for fixed-point landing of a small fixed-wing unmanned aerial vehicle. Background technique [0002] The current UAV fixed-point landing technology has become a new hotspot in the development of advanced control technology of aviation aircraft in the new century. At present, the autonomous landing and rolling recovery of domestic UAVs is very mature, but generally the requirements for the recovery site are relatively high, which limits the use of The use of man-machines can improve the convenience of drone recovery and reduce the scope of use through fixed-point landing. [0003] Conventional taxiing, take-off and landing fixed-wing UAVs fly at a fixed glide angle during landing and glide, generally around 2.5-3°, and the longitudinal trajectory tracking of UAVs directly aff...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/10
CPCG05D1/101
Inventor 赵创新余长贵夏炎遆好建何智力王毅熊维康王庆琥
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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