High-altitude and high-speed UAV landing and grounding state control method

A technology of grounding state and control method, which is applied in the direction of attitude control, three-dimensional position/course control, etc., can solve the problems of slow change in lifting speed, small lifting acceleration, and landing action lag, and meet the design requirements, meet performance requirements, and realize The effect of a safe and smooth landing

Active Publication Date: 2021-10-08
CHENGDU AIRCRAFT INDUSTRY GROUP
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AI Technical Summary

Problems solved by technology

Only the wheel-loaded signal is used to judge. If the vertical speed of the aircraft is well controlled when it lands, the vertical speed changes slowly (the vertical acceleration is small), and the pressure sensed by the wheel-loaded signal changes slowly. The status of landing and grounding has not yet been determined, resulting in various landing actions lagging behind; if the two wheel-mounted sensors (generally, the two main aircraft grounding first) all fail, the drone will not judge the landing and grounding, which may rush out of the runway, resulting in failed landing

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  • High-altitude and high-speed UAV landing and grounding state control method

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Embodiment Construction

[0011] refer to figure 1 , figure 2. According to the present invention, the high-altitude high-speed autonomous take-off and landing type UAV landing control system collects differential GPS information through the flight control computer, the altitude values ​​of the inertial navigation GPS, the atmospheric engine 1, the atmospheric engine 2, the radio altimeter 1, and the radio altimeter 2 and Validity signal, to determine whether the equipment is faulty, if yes, set differential GPS, inertial navigation GPS, radio altimeter 1, radio altimeter 2, and effective bit information of atmospheric machine altitude information, otherwise return to determine whether the equipment is faulty; according to differential GPS, The altitude value and validity signal of the inertial navigation GPS are used to judge whether there is an altitude source that is valid. If the altitude is valid, it is judged whether it is within the altitude threshold. If it is true for 5 consecutive shots, t...

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Abstract

The invention discloses a method for controlling the landing state of a high-altitude and high-speed unmanned aerial vehicle, aiming to provide a safer and more reliable control method. The present invention is realized through the following technical solutions: the high-altitude high-speed autonomous take-off and landing type unmanned aerial vehicle landing control system collects differential GPS information through the flight control computer, inertial navigation GPS, atmospheric engine 1, atmospheric engine 2, radio altimeter 1, radio altimeter Altitude value and validity signal in Table 2, to determine whether the equipment is faulty, if so, set the effective bit information of altitude information; according to the altitude value and validity signal of differential GPS and inertial navigation GPS, determine whether there is an altitude source that is valid and the altitude is effective Then judge whether it is within the height threshold. If it is, the signal of the left and right main wheel load sensors will be collected continuously for 5 shots, and then it will be judged whether the wheel load is true for 5 consecutive shots. Landing grounded state operation.

Description

technical field [0001] The technology relates to a method for comprehensive determination of the grounding status of high-altitude and high-speed autonomous take-off and landing unmanned aerial vehicles (UAVs) such as geodesy, meteorological observation, urban environment detection, earth resource exploration, and forest fire prevention. Background technique [0002] In the aviation industry, drones mainly include aircraft body, flight control system, data link system, launch recovery system, power supply system, etc. Statistics show that a large number of manned aircraft accidents occur during takeoff and landing. For autonomous take-off and landing UAVs, because the flight control computer and ground telemetry and remote control personnel have replaced the role of the pilot, the pilot lacks the ability to judge the landing and grounding status, and will automatically perform follow-up operations according to the status of the landing and grounding signs (such as releasing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/10G05D1/08
Inventor 梅颖徐龙盛小银吴佳美
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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