Unmanned aerial vehicle recovery parachute intelligent decelerating system and decelerating method thereof

Abstract

The invention discloses an unmanned aerial vehicle recovery parachute intelligent decelerating system and a decelerating method thereof. The unmanned aerial vehicle recovery parachute intelligent decelerating system comprises an unmanned aerial vehicle body, a cable winding device and a control unit,wherein the cable winding device comprises a main parachute cord, a cable winding mechanism, a releasing mechanism and a control lead, wherein the main parachute cord is fixedly connected with the unmanned aerial vehicle body, the cable winding mechanism is wound to the main parachute cord, the releasing mechanism is arranged under the cable winding mechanism, and the control lead is electrically connected with the releasing mechanism; the other one of the control lead communicates with a control center of the unmanned aerial vehicle body; and the control unit comprises a height sensor, a power supply module and a high-accuracy sensor module and a height setting module, wherein the height sensor is mounted under the unmanned aerial vehicle body, the power supply module is electrically connected with the height sensor, and the high-accuracy sensor module and the height setting module areelectrically connected with the power supply module. According to the unmanned aerial vehicle recovery parachute intelligent decelerating system and the decelerating method thereof, before an unmanned aerial vehicle which parachutes normally is going to land, the cable winding device mounted in the middle of the main parachute cord of a parachute rapidly tightens the main parachute cord so as torapidly reduce the falling speed of the unmanned aerial vehicle and reduce the impact of the ground to the unmanned aerial vehicle during landing.

Description

technical field [0001] The invention relates to an unmanned aerial vehicle, in particular to an intelligent deceleration system for an unmanned aerial vehicle recovery umbrella. Background technique [0002] UAVs first appeared in the 1920s. In 1914, the First World War was in full swing. The two generals of the United Kingdom, Carder and Pichel, made a proposal to the British Military Aviation Society. [0003] At present, when most types of unmanned aerial vehicle recovery parachute devices take into account the factors of the landing point, the third constant-velocity falling stage is generally designed (the first stage is the gravity acceleration stage before the parachute is opened, and the second stage is the pull force of the parachute after the parachute is less than The deceleration stage during the gravity, the third stage is the uniform speed stage when the umbrella pulling force is equal to the gravity). [0004] Taking the speed of the third stage after the par...

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Problems solved by technology

[0004] Taking the speed of the third stage after the parachute is opened as 5m/s as an example, since the distance between the parachute and the UAV is constant, the falling speed of the parachute is consistent with the falling speed of the body, so the UAV lands The front falls at a constant speed

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