Working principle of electric actuator

‌Electromagnetic induction principle‌: When current passes through a coil, a magnetic field is generated. This magnetic field interacts with the internal magnet to generate an attractive or repulsive force, thereby generating movement between the magnet and the coil. By changing the direction of the current, the direction of movement of the magnet can be controlled to achieve forward and reverse rotation of the electric actuator.
‌Motor principle‌: DC motors are usually used in electric actuators. When powered on, the current generates torque in the coil of the motor, causing the rotor of the motor to start rotating. By changing the magnitude and direction of the current, the speed and torque of the motor can be controlled, thereby achieving speed regulation and position control.
‌Transmission mechanism‌: Electric actuators usually use screw transmission or gear transmission mechanism to achieve linear or rotational motion. The design of the transmission mechanism should not only consider the transmission efficiency, but also the accuracy and reliability of the transmission.
‌Position feedback device‌: In order to achieve accurate position control, electric actuators are usually equipped with position sensors or encoders. These devices can sense the position of the actuator in real time and feed back the signal to the control system to achieve closed-loop control.