With the increasing complexity of VLSI devices, more complex faults have appeared. Many methods for diagnosing the single stuck-at fault have been studied. Often multiple defects on a failing chip better reflect the reality. So, we propose an efficient diagnosis algorithm for multiple stuck-at faults. By using vectorwise intersections as an important metric of diagnosis, the proposed algorithm ...

A continuing task in engineering is to increase the reliability, availability and safety of technical processes and to achieve these fault diagnosis becomes an advanced supervision tool in the present industries. Vibration in rotating machinery is mostly caused by unbalance, misalignment, shaft crack, mechanical looseness and other malfunctions. The objective of this paper is to propose a model...

The past research in fault localization in distributed data centers has used either monitoring or probing techniques in isolation. In this paper, we argue that effective fault localization solutions can be built by exploiting the information captured by both the techniques. Based on this concept, we propose an adaptive probing solution for fault localization where information from monitoring ag...

In dynamic systems that adapt to users’ needs and changing environments, dependability needs cannot be avoided. This paper proposes an orthogonal fault tolerance model as a means to manage and reason about multiple fault tolerance mechanisms that co-exist in dynamically adaptive systems. One of the key challenges associated with dynamically evolving fault tolerance needs is the feature interact...

Fault localization is an important and expensive task in software debugging. Some probabilistic graphical models such as probabilistic program dependence graph (PPDG) have been used in fault localization. However, PPDG is insufficient to reason across nonadjacent nodes and only support making inference about local anomaly. In this paper, we propose a novel probabilistic graphical model called B...

A cluster of sensor nodes in Cluster-based Wireless Sensor Network (CWSN) is cooperating to achieve some objectives. For CWSN, the fault-tolerance and reliability has been an important topic. The problem of reaching agreement in the distributed system is one of the most important issues to design a fault-tolerance system. In previous works, reach a common agreement among healthy nodes to cope w...

Operations, maintenance and reliability of wind turbines have received much attention over the years due to the rapid expansion of wind farms. This paper explores early fault diagnosis technique for a 5MW wind turbine system subjected to multiple faults, where genetic optimization algorithm is employed to make the residual sensitive to the faults, but robust against disturbances. The proposed t...

Continuous scaling of CMOS technology makes it possible to integrate a large number of heterogeneous devices that need to communicate efficiently on a single chip. For this efficient routers are needed to takes place communication between these devices. As the chip scales, the probability of both permanent and transient faults is also increasing, making Fault Tolerance (FT) a key concern in sca...

ABSTRACT: In this work, a model based fault diagnosis methodology for PEM fuel cell systems is presented. The methodology is based on computing residuals, indicators that are obtained comparing measured inputs and outputs with analytical relationships, which are obtained by system modelling. The innovation of this methodology is based on the characterization of the relative residual fault sensi...