This book investigates observer-fault estimation techniques in detail while also highlighting
recent research and findings regarding fault estimation. Many practical control systems are
subject to possible malfunctions which may cause significant performance loss or even system
instability. To improve the reliability performance and safety of dynamical systems fault
diagnosis techniques are now receiving considerable attention both in research and
applications and have been the subject of intensive investigations. Fault detection - the
essential first step in fault diagnosis - is a binary decision-making process used to determine
whether or not a fault has occurred. In turn fault isolation is used to identify the location
of the faulty component while fault estimation is used to identify the size of the fault
online. Compared with the problems involved in fault detection and isolation fault estimation
is considerably more challenging.
