An interaction predictive approach to fault-tolerant control in network control systems

Abstract

This paper illustrates some of the capabilities of previously proposed network control system (NCS) architectures to carry on functioning in the event of faults, without recourse to system reconfiguration. The principle of interaction prediction is used to set up a coordination strategy that encapsulates an ability to withstand or tolerate certain faults, thereby allowing the system to continue functioning. It is also shown that the coordination strategy can be made more effective if a learning agent is allowed to learn the coordination functions. This facilitates the use of different types of agent at the local level, together with recurrent networks and genetic algorithms (GAs) at the coordination level. The experimental test-bed system is a benchmark three-tank system that has some of the main features of an industrial process control system.

Robust Fault Estimation Using Relative Information in Linear Multi-Agent Networks

“…Subsequently the detection of abrupt faults in discrete systems was considered in [18] and decentralised fault detection schemes have also been proposed [15], [16]. More recently Patton and co-workers have proposed a framework for fault detection in networked systems [19], [20]. A similar problem to that investigated in [21] is considered in this paper -the methodology however is entirely different.…”

A sliding mode observer for monitoring and fault estimation in a network of dynamical systems

“…In comparison, research in FDI for large scale interconnected systems is limited— although some results for large scale systems were obtained in the 1980s and the early 1990s and more recently for vehicle formations . Patton and co‐workers have recently proposed a generic framework for FDI in networked systems () based on unknown input observers. The idea has subsequently been extended to provide an architecture for fault tolerant control in networked systems.…”

An Adaptive Sliding Mode Observer for A Complex Network of Dynamical Systems

“…Recently a second order sliding mode observer has been designed specifically for online monitoring and fault detection in satellite formations, in the presence of uncertainty (Wu and Saif [2007]). Patton and co-workers have recently proposed a generic framework for FDI in networked systems , Kambhampati et al [2007]) based on unknown input observers. In (Noijen et al [2005]), an observercontroller combination is discussed for a single unicycle mobile robot.…”