|“||detects an incoming signal and respond by changing something in the environment. For example, a relay is an actuator that toggles a mechanical switch, and can thus cause a good number of responses to occur such as enabling illumination, heating system, audible alarm, and so on. Actuators such as motors, pneumatics, and hydraulics can move objects and pump fluids.||”|
|“||[a] peripheral ( output ) device which translates electrical signals into mechanical actions; e.g., a stepper motor which acts on an electrical signal received from a computer instructing it to turn its shaft a certain number of degrees or a certain number of rotations.||”|
|“||[is] a mechanical device for moving or controlling a mechanism or system. It takes energy, usually transported by air, electric current, or liquid, and converts that into some kind of motion.||”|
|“||[is a] device which conveys digital information to effect a change of some property of a physical entity.||”|
- Glossary of Computer System Software Development Terminology.
- IoT-A Terminology (full-text).
- Framework for Cyber-Physical Systems, at 5.