An electrical mechanism for moving or controlling something indirectly instead of by hand, such as a door lock Output device the PCM controls such as solenoids, relays, fuel injectors and stepper motors
a hardware output device that translates electrical signals into mechanical actions For example a stepper motor that turns its shaft a certain amount in response to an electrical signal received via a digital-to-analog converter from a computer
That portion of a regulating valve which converts mechanical fluid, thermal energy or electrical energy into mechanical motion to open or close the valve seats
A means provided to execute the output from the controller, (i e , the control action), through operating a final control element This control action is determined such as to reduce the error between the measured value and desired value of the controlled variable
A mechanical, pneumatic, hydraulic or electric device in a control system that furnishes the power to change and/or maintain the position of an element (such as an end-effector) the performs a task The actuator responds to a signal received from the control system
This is the generic term for a device which feedback uses to control the beam Examples are an XCOR (horizontal correction magnet) and PHAS (a phase shifter controlled via a PAU)
That portion of a regulating valve that converts mechanical fluid, thermal energy or electrical into mechanical motion to open or close the valve seats