Autonomous fixed-point recovery method for parachute fixed-wing UAV

Abstract

The invention provides a method for autonomous fixed-point recovery of a parachuted fixed-wing UAV. First, set the recovery point and recovery course, and judge whether the setting meets the recovery conditions; Control the aircraft to fly along the approach and descent route; then generate a recovery route, and control the aircraft to fly along the recovery route; correct the recovery route according to the wind speed and direction measured on the aircraft, and control the aircraft to follow the corrected recovery route; finally, control the engine when the aircraft approaches the recovery point Stop and open your umbrella. The invention greatly simplifies the aircraft recovery operation process, reduces the operating burden of the drone operator, enhances the autonomy of the drone, and reduces the dependence of the drone on communication conditions.

Description

technical field [0001] The invention relates to a drone recovery technology. Background technique [0002] Due to its low cost and wide range of uses, drones have become a hot spot in the industry in recent years. Among them, the parachute fixed-wing UAV is very suitable for exploration, line inspection, forestry and other occasions that require long-term cruising in a large area and poor launch and recovery site conditions due to its long battery life and low site requirements. [0003] Although the requirements for the site are low and there is no need for infrastructure such as runways, the parachute recovery drone still needs to consider the basic conditions of the recovery site when recovering, except for the basic conditions of the ground, such as whether it is flat, whether there is water, and the degree of softness and hardness of the ground. In addition to the local terrain factors that must be artificially investigated, there are also factors such as whether there...

AI Technical Summary

Problems solved by technology

In the process of entering the recovery route, since there is no ground elevation assistance, it is necessary to manually control the approach and lowering process, and it is impossible to truly achieve autonomous recovery

[0005] The current recovery method requires the drone operator to have rich recovery experience. At the same time, under the condition of communication failure between the ground station and the aircraft, since the recovery route cannot be manually uploaded, there is a greater safety risk in aircraft recovery.

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