Analysis and Synthesis of High Gain and Variable Structure Feedback Systems.

摘要

This study deals with the analysis and synthesis of two classes of multivariable feedback systems, high gain feedback systems and variable structure systems (VSS), subject to parameter variations and disturbances. First is examined the insensitivity property of high gain state feedback systems. The idea of incorporating high gain feedback loops in observers is then introduced. Then the behavior of the resulting 'two-high-gain loops' system is studied. A design procedure which enhances the insensitivity of the closed loop system for the high gain feedback matrices is developed. Second, the relationship between high gain feedback systems and VSS is established. Third, the robustness property of these two classes of feedback systems with respect to model reduction is investigated. Finally, the insensitivity of these two classes of feedback control is used to enhance the reliability of interconnected systems. Design procedures of high gain feedback and variable structure controllers are illustrated in the designs for a distillation column, a synchronous machine, and the longitudinal motions of an aircraft.