Introduction -- State Observers for Different Types of Systems -- Linear Functional Observers -- A Parametric Approach to the Design of Reduced-Order Linear Functional Observers -- Functional Unknown Input Observers: Further Results and Applications -- Functional State and Unknown Input Observers for Nonlinear Systems -- Simultaneous State and Input Estimation -- Further Notes on Functional Observers.

The theory of linear functional observers, which is the subject of this book, is increasingly becoming a popular researched topic because of the many advantages it presents in state observation and control system design. This book presents recent information on the current state of the art research in this field. This book will serve as a useful reference to researchers in this area of research to understand the fundamental concepts relevant to the theory of functional observers and to gather most recent advancements in the field. This book is useful to academics and postgraduate students researching into the theory of linear functional observers. This book can also be useful for specialized final year undergraduate courses in control systems engineering and applied mathematics with a research focus.