In dictionaries:
Open-loop controller
In control theory, an open-loop controller, also called a non-feedback controller, is a control loop part of a control system in which the control action ("input" to the system) is independent of the "process output", which is the process variable that is being controlled.
Open-loop gain
The open-loop gain of an electronic amplifier is the gain obtained when no overall feedback is used in the circuit.
more...