An actuator is a device that converts energy into motion. It is commonly used in various applications, such as robotics, manufacturing, and automotive systems. Actuators can be powered by different energy sources, including electricity, hydraulic fluid, or compressed air, allowing them to perform tasks like opening valves, moving robotic arms, or adjusting machinery. There are several types of actuators, including electric actuators, pneumatic actuators, and hydraulic actuators. Each type has its advantages and is chosen based on the specific requirements of the application. Actuators play a crucial role in automation, enabling precise control and movement in many modern technologies.