Electric servomotors

A servomotor is an electromechanical drive device used to provide precise control of angular position, speed and acceleration. The electric servomotor is widely used in applications requiring high-precision controlled motion, such as robotics, industrial automation and control systems. The servomotor is a position-servo-controlled electromechanical mechanism.

Electric motor

The servomotor often consists of a direct current (DC) motor or a brushless motor, which produces the rotary movement.

Gearbox

The reducer consists of a set of gears that reduces the speed of the motor while increasing the torque, allowing more precise control of the movement.

Position sensor

A position sensor, such as a potentiometer or encoder, measures the current position of the output axis. This information is used to provide feedback to the controller.

Electronic controller

The electronic controller is an integrated circuit that receives command signals (usually pulse-width modulated or PWM), compares the motor's current position with the desired position and adjusts the motor's speed and direction to achieve and maintain the target position.

Control signal

The actuator receives a control signal that indicates the target position. This signal is often a pulse-width modulated (PWM) signal, where the pulse duration corresponds to a specific angular position.

Feedback

The position sensor (potentiometer or encoder) measures the current position of the output axis and sends this information to the controller.

Comparison and adjustment

The controller compares the current position with the target position and adjusts the motor speed and direction to correct any differences. This continuous feedback process enables the actuator to accurately reach and maintain the desired position.

Servomotors are used in a variety of applications where precise motion control is essential.