In this paper, we present an energy-efficient on-line diagnosis algorithm for cluster-based wireless sensor networks. It employs local comparisons of sensed data and dissemination of the decision made by the comparison results. Cluster-heads act as checkers for their associated cluster members. Redundant sensor nodes, as far as sensing coverage is concerned, are partially utilized to tolerate m...

As VLSI geometry continues to shrink and the level of integration increases, it is expected that the probability of faults, particularly transient faults, will increase in future microprocessors. So far, fault tolerance has chiefly been considered for special purpose or safety critical systems, but future technology will likely require integrating fault tolerance techniques into commercial syst...

Many model-based fault diagnosis approaches have been proposed so far and some of them are applied in industrial practice. But for modern complex processes, due to the variable nature of faults and model uncertainty, no single approach can diagnose all faults and meet different contradictory criteria. In this paper, the importance of integration of different fault diagnosis schemes in a common ...

In this paper three different approaches for fault detections are compared on example with coal mill used at a power plant. The compared methods are based on: an optimal unknown input observer, static and dynamic regression model-based detections. These approaches are compared on data from a coal mill, where a fault emerges during the test set. The conclusion on the comparison is that observerb...

The reliable execution of a mobile agent is a very important design issue in building a mobile agent system and many fault-tolerant schemes have been proposed so far. Security is a major problem of mobile agent systems, especially when money transactions are concerned . Security for the partners involved is handled by encryption methods based on a public key authentication mechanism and by secr...

Many model-based fault diagnosis approaches have been proposed so far and some of them have been put into industrial practices. But for modern complex processes, due to the variable nature of faults and model uncertainty, no single approach can diagnose all faults and meet different contradictory criteria. In this paper, the importance of integration of different fault diagnostic schemes in a c...

In this paper we consider verification of combinational circuits by test vector simulations. The simulation-based verification under the presence of a fault model uses test pattern generation approach. We consider an implicit fault model that can possibly overcome incompleteness of explicit fault models considered so far. We show that the test vector generation can be enhanced by techniques use...

This paper presents a new fault detection and isolation scheme for dealing with simultaneous additive and parametric faults. The new design integrates a system for additive fault detection based on Castillo and Zufiria, 2009 and a new parametric fault detection and isolation scheme inspired in Münz and Zufiria, 2008 . It is shown that the so far existing schemes do not behave correctly when bot...

This chapter describes a study on workflow scheduling with fault tolerance. It starts with an understanding on workflow scheduling and fault tolerance technologies independently. Next, the chapter surveys the related works on the combination field of workflow scheduling and fault tolerance technologies. Generally, these works are classified into six categories corresponding to the six fault tol...

In this paper, integrated design of observer based fault detection (FD) for a class of uncertain nonlinear systems with Lipschitz nonlinearities is studied. In the context of norm based residual evaluation, the residual generator and evaluator are designed together in an integrated form, and based on it, a trade-off FD system is finally achieved in the sense that for a given fault detection rat...