نتایج جستجو برای: fault and failure

تعداد نتایج: 16892677  

2014
Lokesh B. Bhajantri

Sensor nodes are prone to failure due to energy depletion and some other reasons in Distributed Sensor Networks (DSNs). In this regard fault tolerance of network is essential in distributed sensor environment. Energy efficiency, network or topology control and faulttolerance are the most important issues in the development of next-generation DSNs. This paper proposes a node fault detection and ...

Journal: :CoRR 2008
George Bosilca Rémi Delmas Jack J. Dongarra Julien Langou

We present a new approach to fault tolerance for High Performance Computing system. Our approach is based on a careful adaptation of the Algorithmic Based Fault Tolerance technique (Huang and Abraham, 1984) to the need of parallel distributed computation. We obtain a strongly scalable mechanism for fault tolerance. We can also detect and correct errors (bit-flip) on the fly of a computation. To...

2002
Ravishankar K. Iyer Zbigniew T. Kalbarczyk

The discussion in this paper focuses on the issues involved in analyzing the availability of networked systems using fault injection and the failure data collected by the logging mechanisms built into the system. In particular we address: (1) analysis in the prototype phase using physical fault injection to an actual system. We use example of fault injection-based evaluation of a software-imple...

2008
Sajjad Fekri Dawei Gu Ian Postlethwaite Michael Athans

This paper presents a novel fault detection and isolation (FDI) architecture applied to the lateral-directional axis of an F-14 aircraft during powered approach to landing under sensor failures. The fault-tolerant architecture employed is based on the so-called “Robust Multiple-Model Adaptive Control” (RMMAC) and hence is referred to as “RMMAC/FDI”. The results demonstrate successful stability ...

2013
D. Maheshwari A. Dhanalakshmi

Fault-Tolerance is an important design issue to construct a reliable mobile ad hoc network. Many types of faults may occur in mobile network such as link failure, node failure, misbehaving nodes, network failure, power and energy consumption etc. This paper mainly aims in surveying the research articles by combining them together to find the fault tolerant research problem in mobile ad hoc netw...

2009
Felix Salfner Miroslaw Malek

Management of an ever-growing complexity of computing systems is an everlasting challenge for computer system engineers. We argue that we need to resort to predictive technologies in order to harness the system’s complexity and transform a vision of proactive system and failure management into reality. We describe proactive fault management, provide an overview and taxonomy for online failure p...

In this study, reservoir water level effects on nonlinear dynamic response of concrete gravity dams are investigated. For this purpose, the nonlinear behavior of the dam concrete is captured using the concrete damage plasticity (CDP) on the non associated flow rule assumption. Water in the reservoir is represented by the Lagrangian (displacement-based) fluid finite elements. The program ABAQUS ...

Journal: :Sci. Comput. Program. 2004
Malgorzata Steinder Adarshpal S. Sethi

Fault localization, a central aspect of network fault management, is a process of deducing the exact source of a failure from a set of observed failure indications. It has been a focus of research activity since the advent of modern communication systems, which produced numerous fault localization techniques. However, as communication systems evolved becoming more complex and offering new capab...

2017
Henk Schepers

For the purpose of a clear discussion) this paper will introduce terms and paradigms used for fault tolerance. In this paper first the notions system, component, environment, design, structure and behaviour are presented. Then, the notions failure and fault are defined. After observing that designing a fault tolerant system is based on the use of redundaucy and fault hypotheses, the fundamental...

1996
Pradeep K. Khosla Christiaan J. J. Paredis

Whether a task can be completed after a failure of one of the degrees-of-freedom of a redundant manipulator depends on the joint angle at which the failure takes place. It is possible to achieve fault tolerance by globally planning a trajectory that avoids unfavorable joint positions before a failure occurs. In this article, we present a trajectory planning algorithm that guarantees fault toler...

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