Control systems design methodologies have long suffered the traditional and myopic dichotomy between time and frequency domain approaches, each of them being specialized to cope with only scarcely overlapping performance requirements. This book is aimed at bridging the two approaches by presenting design methodologies based on the minimization of the norm (H2/Hoo) of a suitable transfer function.In a concise and self-contained manner this book presents basic background material on robust control theory, as well as more recent achievements, such as robust stability and robust performance in the presence of parameter uncertainties. It features a new perspective on classical LQC results and further sections on:. robust synthesis. nonclassical optimization problems. analysis and synthesis of uncertain systemsA systematic book on this topic is long overdue and Control Theory and Design will be essential reading for graduates and those entering the research field. As care has been taken to supply all the required mathematical background, the book is also suitable for undergraduate students with some knowledge of basic systems and control.