Before revision: REDIRECT Control theory#Classical control A closed-loop controller or feedback controller is a control loop which incorporates feedback, in contrast to a open-loop controller or non-feedback controller.A closed-loop controller uses feedback to control states or outputs of a dynamical system.
After revision: A closed-loop controller or feedback controller is a control loop which incorporates feedback, in contrast to a open-loop controller or non-feedback controller.A closed-loop controller uses feedback to control states or outputs of a dynamical system.