Controller design for performance guarantees in uncertain regulating systems

This paper presents a controller design methodology for a class of uncertain, multivariable, regulating systems required to maintain operating conditions within small tolerances despite a vector step disturbance. Each control effort is limited by its hardware, i.e., the actuator outputs are limited in magnitude and response speed. The design methodology involves a frequency domain approach based on single loop design. A Gauss elimination technique facilitates the various design steps. The specific class of systems addressed is one which can be modelled as square, multivariable systems with structured (i.e. parametric) and/or unstructured uncertainty.