Quadcopter drones, with their flexible maneuverability, convenient portability and increasingly powerful functions, have been widely used in many fields such as aerial photography, agricultural plant protection, logistics and transportation, and security inspection. This article will introduce the operation principle, advantages and applications of quadcopter drone in depth.

Quadcopter drone operation principle

A quadcopter drone, as the name suggests, has four rotors, each driven by a brushless motor. Its core operation principle is to control the rotational speed of the four rotors to realize the adjustment of flight attitude. The rotation speed of the four rotors is not constant, but is adjusted in real time according to the attitude and commands of the aircraft.

Lift Control: Increase the RPM of the four rotors at the same time, the drone will rise; decrease the RPM at the same time, the drone will fall.

Forward and backward movement: If the front and rear rotors increase the RPM at the same time, and the rear rotors decrease the RPM at the same time, the drone moves forward; on the contrary, it moves backward.

Left-Right Movement: If the left and right rotors increase the RPM at the same time, and the other two rotors decrease the RPM at the same time, the drone will move to the left; conversely, it will move to the right.

Rotation Control: The four rotors operate at different speeds to realize the rotation of the drone. For example, if two rotors rotate at high speeds and the other two rotors rotate at low speeds, the UAV will rotate around a vertical axis.

This control is realized through the light Control System (FCS), a complex system that contains sensors such as gyroscopes, accelerometers, and magnetometers, as well as microprocessors and control algorithms. The sensors monitor the attitude and speed of the UAV in real time, and the microprocessor calculates the required rotational speed of each rotor based on these data and flight instructions, and precisely controls the rotational speed of each motor through the Electronic Speed Controller (ESC).

Advantages

The quadcopter drone has the following superiorities over any other types of drones:
Ease of control: The quadcopter drone is relatively simple and can be easily learned. Even a naïve person can get the command of its basic controlling skills within a short period.
Small and compact: Being of small and compact construction, it becomes easy to carry and transport.
Good Stability: The four-rotor configuration makes the quadcopter drone relatively stable, a good attitude for flight maintained even during wind.
Vertical Takeoff and Landing: runway is needed for vertical takeoff and landing, greatly increasing the convenience factor.
Relatively low cost: Among all other species, this drone is of relatively lower cost.
Strong expandability: According to different application requirements, it can be equipped with various sensors and devices, such as cameras, LIDAR, infrared sensors, and so on.

Application areas

The application fields of the quadcopter drone are very wide and mainly include the following:

Aerial photography: This is currently one of the most important application areas for a quadcopter drone due to its flexible maneuverability and the function of a high-definition camera capable of shooting high-quality aerial video and photos.

Agricultural plant protection: Drones can carry spraying equipment for pesticide application and fertilizer application. This will enhance agricultural productivity and simultaneously reduce pesticide wastage.

Logistics and Transportation: Drones can deliver express parcels, especially in places where conventional means face some accessibility constraints. As for drone deliveries, they shine.

Security inspection: Drones can be used to inspect power lines, pipelines, and other facilities—improving efficiency and cutting security risks to nil.

Search and Rescue: Drones can be used for search and rescue operations, such as searching for missing persons and disaster site surveys.

Surveying and mapping: High-precision sensors fitted onto drones achieve 3D modeling and terrain mapping by use of the drones.

Film and TV production: Which they are utilized in filming movies, TV dramas, and other film and TV works. From this activity, they give unique perspectives and images.

Conclusion

As an advanced technology, quadcopter drone is profoundly changing the way we live and work. Its convenience, flexibility and versatility make it show great application potential in various fields. We sell several cost-effective quadcopter drones, if you need, you can check our product line.