Contents I. Introduction
The growing requirement for productivity leads to more challenging operating conditions for many practical systems. Such conditions would increase the possibility of system failures. Many practical control systems are subject to possible component malfunctions that may cause significant performance degradation and even instability of the system. To improve the reliability of such systems, the development of fault detection and isolation (FDI) and fault tolerant control (FTC) has received considerable attention in the past two decades and has motivated much research in these fields (see, e.g., [1]–[4] and the references therein).
