Method for hovering and automatically facing wind of composite-wing unmanned aerial vehicle

A technology of unmanned aerial vehicles and compound wings, which is applied in the direction of rotorcraft, motor vehicles, non-electric variable control, etc., can solve the problems of poor attitude stability, adjustment of the heading of the aircraft head, and poor realization effect, so as to reduce capacity loss, Save time and cost, avoid the effect of insufficient margin

Active Publication Date: 2021-03-23
CAIHONG DRONE TECH CO LTD
View PDF9 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When most compound-wing UAVs take off and land vertically or hover, human intervention is often required to adjust the heading of the UAV's nose, so the heading of the nose cannot be adjusted in time according to the wind directio

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for hovering and automatically facing wind of composite-wing unmanned aerial vehicle
  • Method for hovering and automatically facing wind of composite-wing unmanned aerial vehicle
  • Method for hovering and automatically facing wind of composite-wing unmanned aerial vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] The invention relates to a method for automatically facing the wind when a compound-wing unmanned aerial vehicle hovers. When the unmanned aerial vehicle takes off and lands vertically in the rotor mode, it is divided into two stages: a fixed-point hovering stage and a heading adjustment stage to control the direction of the UAV nose automatically. Align the direction of the wind and make the nose face the wind to improve the wind resistance of the drone. When the UAV has just taken off or is about to land vertically, the UAV first enters the fixed-point hovering stage. After the UAV fixed-point hovering time t, it immediately enters the heading adjustment stage. According to the roll angle command judgment, combined with the horizontal analysis of the rotor pull Force, rotor rotation reaction torque difference and fixed-wing r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

According to the automatic wind facing method for hovering of the composite wing unmanned aerial vehicle, when the unmanned aerial vehicle vertically takes off and lands in a rotor wing mode, the headdirection of the unmanned aerial vehicle is controlled to be automatically aligned with the incoming flow direction of wind in a fixed-point hovering stage and a heading direction adjusting stage, sothe head faces the wind, and wind resistance of the unmanned aerial vehicle is improved. When the unmanned aerial vehicle just takes off or is ready to vertically land, the unmanned aerial vehicle firstly enters a spot hovering stage, immediately enters a course adjusting stage after the spot hovering time t of the unmanned aerial vehicle, and is judged according to a roll angle instruction, andthe control capability of the yaw rate of the unmanned aerial vehicle is improved by combining the horizontal component force of the rotor tension, the rotor rotation reaction torque difference and afixed wing rudder; and the heading of the nose is adjusted to realize automatic wind alignment.

Description

technical field [0001] The invention relates to a method for automatically facing the wind when a compound-wing unmanned aerial vehicle hovers, and belongs to the technical field of control of the compound-wing unmanned aerial vehicle. Background technique [0002] Due to the advantages of vertical take-off and landing and long endurance, compound wing UAVs are developing rapidly, taking into account the advantages of helicopters and fixed-wing aircraft, and are widely used. However, for compound-wing UAVs, their ability to resist crosswinds during the vertical take-off and landing phase is generally poor, because it mainly relies on the anti-torque torque of the rotor to control the yaw. The yaw moment experienced by the aircraft when it takes off and lands in a strong crosswind. In the crosswind environment, due to the control of the heading and the wind resistance, it is easy to cause the saturation of the attitude control amount, so that the attitude control ability is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B64C27/22G05D1/08
CPCB64C27/22G05D1/0808G05D1/0858
Inventor 罗继安许长春陈著
Owner CAIHONG DRONE TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap