What is “Servo” ?

The word “servo” comes from the Latin word “servus” which means the servant who acts according to his master’s instructions and works faithfully and quickly. To put it simply, servos are devices that conduct follow-up control to a target position and speed. They are good at moving quickly and repeatedly to a target position and are therefore adapted to a wide range of high-speed and high-performance equipments and automated machines used in plants. For example, servos are used in most manufacturing equipment for manufacturing semiconductors and LCD panels.

What can servo do?

Torque control – Torque generated by a motor can be controlled by controlling a current of the motor.

Torque generated by a motor can be controlled by a torque reference input!

Speed control – Speed can be continuously changed in response to a speed reference voltage.

Rotation speed of a motor can be controlled by a speed reference input!

Position control – Rotation angle (position) and rotation speed (travel speed) of a motor can be controlled by a position reference.

Rotation angle (position) and rotation speed of a motor are decided by a position reference.

When a motor stops, an electrical brake (servo clamp) is applied in order to try to save the position of the motor.

Rotation position of a motor can be controlled by a position reference input!

PAGE TOP