Neighborhood?based distributed robust unknown input observer for fault estimation in nonlinear networked systems

In this paper, a robust distributed fault estimation is addressed for class of nonlinear networked systems with actuator faults where influences from process disturbances are minimized. real-time monitoring systems, substantial challenge to find out the size and shape occurred faults, consequently, it significantly more difficult in multi-agent systems. To consider concern, approach has been proposed such that each agent employs an augmented system owing designated communication graph estimating states both its neighbors. Meanwhile, equipped unknown input observer (UIO) decouple partial as much possible reduce cannot be decoupled. form linear matrix inequalities (LMIs), sufficient conditions provided guarantee stability obtain parameter matrices introduced observer. Finally, two numerical examples verify performance scheme.