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Lateral wind field estimation method based on inclination angle of quadrotor unmanned aerial vehicle

A quad-rotor UAV and tilt angle technology, which is applied in the field of atmospheric science, can solve the problems of wind field information application, complexity and poor application effect, and achieve the effect of high measurement accuracy

Inactive Publication Date: 2019-02-22
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

[0003] In the existing UAV flight test and wind field acquisition methods, it is impossible to use the measured wind field information in real time. Generally, the data recorded after the experiment is used to estimate the UAV wind field.
This method loses timeliness and is more complicated, and the application effect is not good

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  • Lateral wind field estimation method based on inclination angle of quadrotor unmanned aerial vehicle
  • Lateral wind field estimation method based on inclination angle of quadrotor unmanned aerial vehicle
  • Lateral wind field estimation method based on inclination angle of quadrotor unmanned aerial vehicle

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Embodiment Construction

[0042] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0043] The present invention will be further described below in conjunction with the accompanying drawings, and taking the process of calibrating the inclination angle and wind speed of a quadrotor UAV and the measurement process of turbulent wind as examples. Apparently, the enumerated examples are only used to explain the present invention, not to limit the scope of the present invention.

[0044] A method for estimating the lateral wind field based on the tilt angle of the four-rotor UAV described in the present invention, such as figure 1 shown, including the following steps:

[0045] Step 1. Establish the relationship between the tilt angle of the quadrotor UAV and the magnitude of the lateral wind speed

[0046] like figure 2 As shown, the quadrotor aircraft is placed in the wind field environment. In order to achieve hovering at the specified position,...

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Abstract

The invention relates to a lateral wind field estimation method based on an inclination angle of a rotor unmanned aerial vehicle. When being in a wind field environment, a quadrotor aircraft needs tokeep an inclination angle to realize hovering at a specified position, so that the component of the lift force in a lateral direction counteracts the influence of the wind resistance. And thus lateralwind disturbance information of the wind farm environment in which the aircraft is located in the hovering state is estimated according to a function relationship, obtained by pre calibration, between the inclination angle of the quadrotor aircraft and the s lateral wind disturbance. According to the invention, the method is based on existing sensing data of standard autopilots like a gyroscope,a GPS receiver, and an accelerometer; and no extra weather measuring devices like a wind speed measuring instrument are needed. Online wind field measurement is realized rapidly and accurately; and the technical support is provided for activities like the aerospace and forest fire prevention.

Description

technical field [0001] The invention relates to a lateral wind field estimation method based on the inclination angle of a four-rotor UAV, which can provide technical support for aerospace, forest fire prevention and other activities, and belongs to the field of atmospheric science and technology. Background technique [0002] In terms of wind field measurement, the real atmospheric wind field information changes with time and space. In order to obtain complete spatio-temporal regional wind field information, widely used wind field measurement methods include: anemometer wind measurement, balloon wind measurement, wind profile radar wind measurement and other methods. In the engineering application of large-scale and real-time wind measurement, the disadvantages of the above-mentioned traditional land-based wind measurement equipment, such as high cost and platform dependence, are reflected. However, the speed of marketization of rotorcraft in UAVs is accelerating, and it h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P13/02G01P5/00
CPCG01P5/00G01P13/025
Inventor 屈耀红吴西伟张峰孙颖
Owner NORTHWESTERN POLYTECHNICAL UNIV
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