THE APPLICATION OF AN ITERATIVE IDENTIFICATION AND CONTROLLER-DESIGN TO A SUGAR-CANE CRUSHING MILL

This paper details the application of an iterative identification and control design methodology implemented in a modified form, which has b een successful in improving the performance of a sugar cane crushing m ill. The cornerstone of this iterative method is a frequency weighting derived from closed-loop input-output signals. The modified scheme in cludes a sequence of frequency-weighted controller design iterations u sing the initial plant model. After the controller performance has lev eled out, a plant model re-identification is undertaken, followed by a nother series of controller designs. If plant model re-identification does not result in a controller with improved performance, the iterati ve design is terminated.