نتایج جستجو برای: fault isolation

تعداد نتایج: 189042  

2010
Y. H. Dennis Wei Yu Zhou Yifei Sun

This paper analyzes the nature of FDI local networks in production and R&D activities in China and discusses their implications for technological dynamism and regional development. We investigate foreign ventures (or foreign-invested enterprises, FIEs) in the information and communication technology (ICT) industry, based on a large-scale survey of ICT firms conducted in three mega-city regions ...

2003
Sol Picciotto

The recent proliferation of corporate social responsibility (CSR) codes and standards has been matched only by the boom in writings on the subject. This paper will focus mainly on the interaction between these codes and formal legal requirements, at national and international levels. It starts from the perspective that the recent spate of voluntary corporate codes for TNCs must be understood in...

2002
Chee Pin Tan Christopher Edwards

This paper describes a method for designing sliding mode observers for detection and reconstruction of faults, that is robust against system uncertainty. The method uses H∞ concepts to design the observer, minimising the effect of the uncertainty on the reconstruction of the faults. A VTOL aircraft example taken from the fault detection literature is used to demonstrate the method and its effec...

2011
David Martínez-Rego Oscar Fontenla-Romero Amparo Alonso-Betanzos

2008
E. Sobhani-Tehrani

This paper presents two novel hybrid schemes for component fault diagnosis in a general nonlinear system. Unlike most fault diagnosis techniques, the proposed solution detects, isolates, and identifies the severity of faults in the system within a single integrated framework. The proposed technique is based on a bank of adaptive neural parameter estimators (NPE) and a set of parameterized fault...

2006
Carthik A. Sharma Ronald F. DeMara

Adaptive fault isolation methods based on discrepancyenabled pairwise comparisons are developed for reconfigurable logic devices. By observing the discrepancy characteristics of multiple Concurrent Error Detection (CED) configurations, fault isolation is realized without requiring additional test vectors or data coding schemes. Hence the reprogrammability of Field Programmable Gate Arrays (FPGA...

2012
Joshua D. Carl Ashraf Tantawy Xenofon D. Koutsoukos

Modern electrical power disribution systems play a critical role in system operations. Therefore, early fault detection and isolation is essential to maintaining system safety and avoiding catastrophic failures. This paper discusses a fault isolation scheme based on a qualitative fault signature-based isolation mechanism that applies to abrupt, incipient and intermittent faults in the system. W...

2007
Jonas Biteus

To improve safety, reliability, and efficiency of automotive vehicles and other technical applications, embedded systems commonly use fault diagnosis consisting of fault detection and isolation. Since many systems are constructed as distributed embedded systems including multiple control units, it is necessary to perform global fault isolation using for example a central unit. However, the draw...

Journal: :Applied Mathematics and Computer Science 2012
Hao Yang Bin Jiang Vincent Cocquempot Lingli Lu

This paper focuses on supervisory fault tolerant control design for a class of systems with faults ranging over a finite cover. The proposed framework is based on a switched system approach, and relies on a supervisory switching within a family of pre-computed candidate controllers without individual fault detection and isolation schemes. Each fault set can be accommodated either by one candida...

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