Robust control methods.

Robustness of control systems of disturbances and uncertainties has always been the central issue in the feedback control. The feedback would not be needed for most control systems if there were no disturbances and uncertainties. A constant gain feedback controller may be designed to cope with parameter changes providing that such changes are within certain bounds. This motivated many researchers to study and accomplish several kinds of control systems, requiring a mathematical theory. The H? optimal control theory is one of the off-line modern feedback control methods that make it possible to design a constant gain feedback controller which is able to stabilize the real plant in each of its modes. The H? is an extended topics which involves the study of various fields of mathematics and control. In this thesis a brief discussion of the H? control theory and its application are presented.Available from STL Prague, CZ / NTK - National Technical LibrarySIGLECZCzech Republi