Study of the possibility, method and design of control based on imperfect model

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We had five joint meetings during the term of this research project, in which each member of the group presented their recent work concerning this research project. Very enthusiastic discussions took place which led to fruitful collaborations.In the field of robust and H^* control, we have made some substantial contributions to the so-called non-standard problems which include servo and state feedback control. Also, we obtained some significant results on the fundamental structure of H^* control and H^* estimafion.Some members of our group made a remarkable contribution to infinite-dimensional systems, specially robust control of systems with time-delay. Also, they obtained some novel results on digital control theory based on hybrid approach.The above theoretical results were applied to the control of flexible structures, manipulators and synchronous motors. These applications exhibit some practical significance of the achievement of our research group.