Question

What is a servo motor used for? Applications of servo motor and stepper motor

Answer 1

Servo motors are mainly used in applications such as robotics, CNC machinery or automated manufacturing.

A servo motor is a closed-loop servo mechanism that uses position feedback to control its motion and final position. The control input is a signal (analog or digital) that represents the command position of the output axis. The motor is paired with some type of position encoder to provide position and speed feedback.

Answer 2

Closed-loop servo is actually a servo motor, because it has an encoder structure, which can feedback the motion state of the motor and form a closed-loop control. 

Compared with other open-loop controlled motors, the displacement accuracy of servo motors is relatively high, giving a pulse to move a position, after the power off, the motor rotor will not move, will not continue to rotate due to inertia and other reasons.

What does a closed-loop servo do?

The role of closed-loop servo is mainly precise positioning control and feedback information.

Examples of closed-loop servo functions are as follows:

1. The most common application methods are robotic arms on various automated production lines, three-axis, four-axis, five-axis, etc., such as chip production.

2. The parts processing industry will also use servo motors, such as bending machines, flying shears and so on.

3. Entertainment industry, such as large movable displays, somatosensory game consoles and so on.

4. In the logistics and transportation industry, such as AGV vehicles in large warehouses, its motion steering part adopts an integrated servo system.