نتایج جستجو برای: fault detection

تعداد نتایج: 617774  

2013
Mingping Xia

The main content of logic circuit fault detection includes describing circuit to be diagnosed, determining fault and circuit initial information, generating circuit location test set. In this study, LASAR is used to carry out the logic circuit simulation so as to create such documents as fault dictionary, node truth value table, etc. for the preparation of fault detection. Due to the limitation...

2005
F. Hamelin T. Boukhobza

This paper deals with the Robust Fault Detection (RFD) problem for multilinear affine uncertain systems and proposes an approach to solve it. Convex Minkowski combinations are used to compute as precisely as possible uncertainty sets according to the parameters variations in a fault-free context. Faults to be detected are characterized either by a parameter change outside its definition interva...

2017
Dong Zhao Dong Shen Youqing Wang

A fault diagnosis and compensation problem for two-dimensional discrete time systems with time-varying state delays is studied in this paper. The concerned two-dimensional systems are described by the Fornasisi– Marchesini second model and are subject to unknown disturbances. First, a fault detection and diagnosis module is designed to obtain the information on sensor faults; a new fault detect...

2009
Andreas Haeberlen Petr Kuznetsov

One of the most important challenges in distributed computing is ensuring that services are correct and available despite faults. Recently it has been argued that fault detection can be factored out from computation, and that a generic fault detection service can be a useful abstraction for building distributed systems. However, while fault detection has been extensively studied for crash fault...

2004
Chun Gong

Distributed-memory systems can incorporate thousands of processors at a reasonable cost. However, with an increasing number of processors in a system, fault detection and fault tolerance become critical issues. By replicating the computation on more than one processor and comparing the results produced by these processors, errors can be detected. During the execution of a program, due to data d...

2006
Chung-Wei CHENG Wen-Peng TSENG Mi-Ching TSAI

Most existing techniques which employ DWT (discrete wavelet transform) to detect servomechanism fault events are based on the analysis of measured motor current signals. However, the outcomes of these techniques tend to be unreliable when the motor suddenly accelerates or generates a very high output torque. Accordingly, to reduce the occurrence of false alarms, this paper develops a fault dete...

Journal: :Expert Syst. Appl. 2012
K. P. Carpenter Dragan Djurdjanovic A. K. da Silva

0957-4174/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.eswa.2012.05.007 ⇑ Corresponding author. Tel.: +1 512 232 0815; fax E-mail addresses: [email protected] (K.P. C as.edu (D. Djurdjanovic), [email protected] (A.K. This paper uses the Growing Structure Multiple Model System (GSMMS) method for fault detection and precedent-free localization of unwanted heating an...

Journal: :فیزیک زمین و فضا 0
داوود مقدس دانش آموخته، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران بهروز اسکویی استادیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران سعید هاشمی طباطبایی مدیربخش ژئوتکنیک، مرکز تحقیقات ساختمان و مسکن ایران لاست پدرسن استاد ژئوفیزیک، بخش علوم زمین، دانشگاه اپسالا، عزیز ناسوتی دانش آموخته، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران

due to their inherent sensitivity to resistivity contrast, em methods have an important role in detection of fault zones. in this paper, we experienced controlled source tensor magnetotelluric (cstmt) method to recognize a fault zone in bam area. an earthquake devastated the town of bam on 26 december 2003. surface displacements reveal that over 2 m of slip occurred at depth on a fault that had...

Heidari, M.,

Identifying fault categories, especially for compound faults, is a challenging task in mechanical fault diagnosis. For this task, this paper proposes a novel intelligent method based on wavelet packet transform (WPT) and multiple classifier fusion. An unexpected damage on the gearbox may break the whole transmission line down. It is therefore crucial for engineers and researchers to monitor the...

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