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

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 ...

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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