PI controller design for robust stability of a steam generator unit in the presence of additive uncertainty

Abstract

A graphical design method for finding all achievable Proportional Integral (PI) controllers that stabilize a non-reheat steam generator unit for a range of plant parameters has been introduced. Additive Uncertainty is used to describe the uncertain perturbed system for simplification of design. A key advantage of this procedure is that it depends only on the frequency response of the system and does not require the plant transfer function coefficients.