Fault tolerance and fault recovery are integral parts of real-time systems. The literature addresses the issue of fault recovery via two main methods. One is hardware redundancy, and the other is achieved through task replication. Although lots of research has been done in this area, most of the work fell within one of the two streams, or as a combination of both. One point that did not have en...

Ensuring service continuity in safety critical applications is crucial. In some of these applications, multilevel converters play a vital role. this regard, research work presents self-healing fault-tolerant control approach to ensure the resiliency neutral-point clamped converter when semiconductor component encounters an open circuit fault. The defective can be power switch or clamping diode....

Safety critical real-time systems are becoming ubiquitous in many areas of our everyday life. Failures of such systems potentially have catastrophic consequences on different scales, in the worst case even the loss of human life. Therefore, safety critical systems have to meet maximum fault tolerance and reliability requirements. As the design of such systems is far from being trivial, this art...

Fault discovery in the complex systems consist of model based reasoning, fault tree analysis, rule based inference methods, and other approaches. Model based reasoning builds models for the systems either by mathematic formulations or by results of experiments. Fault Tree Analysis shows the possible causes of a system malfunction by enumerating the suspect components and their respective failur...

Replication is widely used to improve fault tolerance in distributed and multi-agent systems. In this paper, we present a different point of view on replication in multi-agent systems. The approach we propose is based on role concept. We define a specific “fault tolerant role” which encapsulates all behaviors related to replication-based fault tolerance in this work. Our strategy is mainly focu...

Following our experience in the development of ExOS, the RTAI/Linux-based real-time operating system for the planetary rover ExoMaDeR, we realized that the management of onboard software configuration requires more powerful capabilities than those currently available, especially to react autonomously and in real-time to unexpected events, e.g. faults. Autonomous dynamic software reconfiguration...

the nnw-trending dena fault, with 140 km length, cuts the major structures of zagros fold-thrust belt in borujen region. the fault has divided the region in two zones, in which different structural, andmorphological features as well assedimentation and seismtectonic characteristics have developed. this study presents a new interpretation for the kinematics of dena fault based on field evidence....

State-machine-based replication is an effective way to increase the availability and dependability of mission-critical applications. However, all practical applications contain some degree of non-determinism. Consequently, ensuring strong replica consistency in the presence of application non-determinism has been one of the biggest challenges in building dependable distributed systems. In this ...

This article proposes a Distributed Realtime Fault-tolerant model, priority Real-time Fault-tolerant algorithm and computational architecture of Distributed Real-time Fault-tolerant. According to this model, the problem of how to schedule a weighted Directed Acyclic Graph (DAG) in Distributed computing system for high reliability can be solved in the presence of multiprocessors faults. When som...