Middle-small unmanned aircraft parachute descent recovery control device and control method thereof

Abstract

The invention discloses a middle and small unmanned aerial vehicle parachute landing device and a controlling method. The device comprises two discrete input 'choosing two out of three' circuits A and B, relay driving circuits A and B and relays A and B, all of which are connected by printed panel lines and respectively control the power supply of the engine and the explosive bolt; the method thereof determines three logic states of 'before open', safety 'pre-commanding' and 'open' and times 'effective time of safety pre-commanding' and 'parking time of engine'. The conversion of the logic states is determined by current test and control instructions, logic states and two timed values and thus controls the relays A and B. The unmanned aerial vehicle parachute landing device can prevent the parachute opening controlling signal from being disturbed so as to avoid accidental parachute opening; the method thereof carries out integrated control to the engine parking and the parachute opening, reduces the possibilities of the accidental parachute opening caused by the misoperation of an operator and the winding and cutting of a parachute rope by the propeller, thereby ensuring the safety and the reliability of the unmanned aerial vehicle parachute landing.

Description

technical field [0001] The invention belongs to the technical field of automatic control of unmanned aerial vehicles, and specifically refers to a parachute recovery control device and control method for small and medium-sized unmanned aerial vehicles. Background technique [0002] Small and medium-sized UAVs are widely used in military and civilian fields, such as military reconnaissance, oil pipeline inspection, urban planning, atmospheric environment monitoring, etc. [0003] Small and medium-sized UAVs mostly take off by ejection or rocket boosting, and are recovered by parachute. The parachute command is issued by the ground operator through the ground measurement and control station. After receiving the parachute command, the on-board control system controls the parachute opening device, and the parachute opening device performs the parachute opening action. [0004] The parachute opening device is usually composed of a parachute throwing mechanism and a corresponding...

AI Technical Summary

Problems solved by technology

If there is no integrated control of the engine and the parachute device, and the engine does not stop when the parachute is thrown, the parachute rope is likely to be entangled and cut by the propeller, so that the parachute cannot be opened and the parachute fails.

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