Title :
Robust design of cascade control
Author :
Maffezzoni, Claudio ; Schiavoni, Nicola ; Ferretti, Gianni
Author_Institution :
Dipartimento di Elettronica, Politecnico di Milan, Italy
Abstract :
A design concept for cascade control that ensures enhanced robustness by minimizing the mutual influence among the cascaded loops is proposed. This is achieved by complete decoupling of the design and performance of two (or more) cascaded control loops. The decoupling applies not only to static aspects (windup and saturations) but also to possible degradation of dynamic performance. The practical impact of the design is illustrated by both analytic and numerical examples.<>
Keywords :
cascade control; control system synthesis; cascade control; control loops; control system synthesis; decoupling; design concept; robustness; Bandwidth; Control systems; Degradation; Frequency domain analysis; Process control; Robust control; Robust stability; Robustness; Transfer functions; Windup;
Journal_Title :
Control Systems Magazine, IEEE
