This book investigates the design of unknown input observers to asymptotically estimate unknown inputs of a broad class of dynamical systems, including systems with multiple time delays in both state and output vectors. The analysis is advanced by the introduction of generalized functionals, which provide a powerful framework for handling time-delay systems. This book presents recent advances alongside fundamental theory, offering researchers a valuable resource to understand the essential concepts and to explore state-of-the-art developments in unknown input and generalized functional estimation. It serves as a useful reference for researchers and postgraduate students working in control systems and can also support specialized senior undergraduate courses in control engineering and applied mathematics with a research focus.
Hieu Trinh is Professor of Electrical Engineering at Deakin University, Australia. Van Thanh Huynh and Samson Yu are Senior Lecturers in Mechatronics and Electrical Engineering at Deakin University. Tyrone Fernando is Professor of Electrical Engineering at the University of Western Australia. Their research interests include system dynamics, estimation, and control.