actuator

An actuator is a mechanical or electrical device that changes a signal or energy input into a physical movement, action, or effect. Its main purpose is to convert a control signal into a physical action or change in a certain system. Actuators are used in a variety of fields and applications, including automation, robotics, industry, medicine, and many others.

There are several types of actuators:

Electric Actuators: These actuators use electrical energy to generate motion. Examples include stepper motors, servo motors, electromagnetic actuators, and linear motors.

Hydraulic Actuators: These actuators use hydraulic pressure to generate motion. Hydraulic cylinders and hydraulic motors are examples of hydraulic actuators.

Pneumatic Actuators: These actuators work with the help of compressed air to generate motion. Examples include pneumatic cylinders and pneumatic motors.

Electromagnetic Actuators: These actuators use an electromagnetic field to control movement. Examples are solenoids and solenoid valves.

Piezoelectric actuators: These actuators use the effect of a piezoelectric material to generate movement when electrical voltage changes.

Thermal Actuators: These actuators use thermal changes to generate motion. An example is a biometallic spring actuator.

Actuators have a wide range of uses. They can be used to control valves, dampers, lifting mechanisms, robotic arms, opening and closing systems, precision positioning and many other applications that require controlled movement or action.