What Is The Current Situation Of The Drone Motor?

- Nov 19, 2018-

What is the current situation of the drone motor?

According to the bubble net article, consumer-grade UAVs use DC brushless motors, which have certain requirements in terms of motor structure design and motor control algorithms. They also require strict performance testing and technical verification systems to ensure Product reliability. With the development of high-performance chips, the motor can not only meet the information fusion of the navigation sensor, but also realize the optimal control of the drone, and the technical threshold is not high.

The vibration amplitude of the motor has an important influence on the performance of the drone. During the flight, the motor generally brings more intense vibration. Once the damping control is not good, it will generate a large acceleration during the flight, which will inevitably bring about the change of the gyro output, which will cause the angle to change. The action will be delayed, and the intuitive feeling to the user is that the drone is not stable.

According to the increase of acceleration and weight, it will bring more pressure to the whole motor system. The drone can hover and can do aerial photography because the MEMS can detect the pitch angle and roll of the drone during flight. The corner changes. When the motor control system detects an angle change, it can control the motor to rotate in the opposite direction to achieve a stable effect. Professional-grade drones require at least four to six brushless motors to drive the rotors of the drone, and motor drive controllers to control the speed and direction of the drone. The motor control system is very important for the stability of the drone. Therefore, the motor system of the professional-grade drone is more accurate and reliable, which is the direction that the motor enterprises in the field of UAV motors need to improve.

In addition, the quality of the winding on the motor also plays an important role in the performance of the drone. The number of coils is directly related to the magnitude of the electromagnetic force. If one or more turns around a circle, the distribution of the magnetic field will be changed, so the electromagnetic force will be affected, and the electromagnetic force directly affects the output power of the motor. Therefore, once the number of windings changes, it directly affects the performance of the drone. It is understood that there are currently two types of unmanned motor windings, manual winding and machine winding. According to industry insiders, the cost of manual winding is higher. The machine winding requires a wire feeder and cannot be full (ie, the iron core is full). Therefore, the high-power and high-efficiency motors seen on the market are manually wound.

In the case that consumer-grade UAVs have become Red Sea, professional-grade UAVs have ushered in a period of rapid development, but professional-grade UAVs have particularly high requirements for related motor and motor control, and they have switched from smart terminals and other fields. Can the manufacturer of the motor provide a more accurate and stable motor and control solution? This is an important opportunity to grasp the rapid development of professional-grade drones.

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