ESTIMATING THE RESPONSE OF ACTUATORS IN A CROSS-DIRECTIONAL CONTROL-SYSTEM

Knowledge of the shape and location of the actuators' response is key to the design of CD controllers. Responses can be extracted from an es timate of the systems' closed loop response by applying a carefully ch osen signal to the actuators' set points which rapidly generates estim ates of the responses with the minimum disruption to the process. The performance and speed of the procedure are illustrated with results fr om an implementation on a CD control system.