A rotor unmanned aerial vehicle electro-mechanical synchronous docking device based on permanent magnet

By installing a permanent magnet structure on the drone to achieve stable docking, the problem of short flight time and limited payload of small drones is solved. It provides fast and safe aerial docking and separation capabilities, and has electrical signal transmission function. The connection structure is easy to install and replace.

CN118372995BActive Publication Date: 2026-06-09NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Filing Date
2024-03-22
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Small drones have short flight times and limited payload capacity, making it difficult to complete large-scale tasks. Furthermore, existing docking devices have low fault tolerance, are difficult to replace after damage, and are unstable in control.

Method used

It adopts a fully symmetrical permanent magnet structure, including a connecting plate, a permanent magnet connecting block and a permanent magnet. The permanent magnet provides attractive and repulsive forces to achieve stable docking of the UAV, and transmits electrical signals through wires to achieve communication. The connecting plate uses carbon plates and keyways to reduce weight and simplify installation.

Benefits of technology

It enables rapid, stable, and safe docking and separation of small UAVs in the air, is robust, can automatically correct for position and attitude errors, has electrical signal transmission capabilities, and the connection structure is easy to install and replace.

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Abstract

This invention discloses a docking device installed on both sides of a small rotary-wing unmanned aerial vehicle (UAV), relating to the fields of UAVs, electromagnetics, mechanics, and dynamics. The device enables aerial docking of small UAVs, fully utilizing their advantages of small size and high flexibility while compensating for limited payload capacity. The method involves installing docking mechanisms on both sides of the UAV, including permanent magnets, connecting plates, and permanent magnet connection structures. The permanent magnets are connected to the UAVs via the permanent magnet connection mechanism and connecting plates. Wires connect the permanent magnets to the flight control system, enabling communication between the two UAVs after docking. During the docking process, docking is completed when the guiding force provided by the permanent magnets exceeds the lateral aerodynamic force, thus limiting the relative movement between the UAVs. Simultaneously, the attraction and repulsion forces of the permanent magnets in this mechanism provide a certain guiding effect, exhibiting robustness. This invention enables rapid docking of UAVs, and in the event of significant misalignment, the two UAVs can be separated, improving docking safety.
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