Unmanned aerial vehicle autonomous grabbing device and control method thereof

The invention discloses an unmanned aerial vehicle autonomous grabbing device and a control method thereof. The unmanned aerial vehicle autonomous grabbing device comprises a mechanical structure and a control module. The mechanical mechanism comprises a connecting base, a lifting device connected with the unmanned aerial vehicle through the connecting base, a supporting assembly arranged at the upper end of the lifting device and a planet wheel assembly arranged in the center of the lower end of the lifting device. The control module comprises a binocular camera, a power supply module, a first processor, a second processor, a first distance sensor, a second distance sensor and a third distance sensor; the power supply module comprises a motor driving module and a steering engine driving module. A matched express box is not needed, flexible grabbing of express goods of different sizes can be achieved by matching with the variable grabbing space of the planet wheel set, and the flexible grabbing device is comp