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2025-07-12

Communication link


The communication link includes data transmission, image transmission, remote control and ground station. Data transmission terminal and ground control station (data terminal such as notebook or mobile phone) receive data information from flight control system. Image transmission is image transmission, which accepts images taken by airborne cameras or video cameras. The remote controller includes two parts, a transmitter and a receiver. The remote controller is also called a transmitter, and the receiver is installed on the machine.

The function of the remote controller is to send instructions to the receiver of the UAV and send the signals to the flight control for processing through the receiver. When the flight control receives the instructions from the ground, it will perform corresponding actions.

Generally, according to the number of channels, the remote controllers are divided into four-channel, six-channel, seven-channel, eight-channel remote controllers, etc. The remote controllers are divided into American hands and Japanese hands because of the different throttle rocker, and the left-hand throttle is American hands and the right-hand throttle is Japanese hands. The common frequency of the radio of the remote control is 2.4GHz.

Ground station: The ground station includes mobile phone ground station and computer ground station. The main function is to debug and monitor the aircraft.


Brushless motor

The coil is wound around the stator, and then the magnet is made into a rotor. It is the magnet that rotates, not the coil, so there is no carbon brush consumption. Since the coil is fixed, how to make the coil produce a changing magnetic field? That's why a brushless machine needs three wires. By using brushless electric modulation, the coil group is correspondingly powered to generate a corresponding magnetic field, so that the magnet rotor can be continuously driven to keep rotating.

Brushless AC motors are mostly designed with external rotors, which are widely used in UAV industry for their high efficiency, low energy consumption, low noise, long service life and high reliability.




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