نتایج جستجو برای: fault detection

تعداد نتایج: 617774  

2013
Guohai Liu Wei Tang Wenxiang Zhao

This paper proposes a parametric model for inter-turn fault detection in a faulttolerant permanent-magnet (FTPM) machine, which can predict the effect of the shortcircuit fault to various physical quantity of the machine. For different faulty operations, a new effective stator inter-turn fault detection method is proposed. Finally, simulations of vector-controlled FTPM machine drives are given ...

2010
Jamal BEIZA Seyed Hossein HOSSEINIAN Behrooz VAHIDI

This paper presents a novel approach for fault detection and identification in order to estimate voltage sag during a fault. One of the best approaches for voltage sag estimation is instantaneous voltage estimation. The approach uses traditional state estimation where redundant measurements are available. The proposed method is used to estimate voltage sag performance during a fault. At the fau...

2015
Danesh Tarapore Anders Lyhne Christensen Jonathan Timmis

Fault detection is one of the most prominent challenges in the field of multirobot systems (MRS). Most existing faulttolerant systems prescribe a characterisation of normal behaviours (fault-free behaviours), and train a model to recognise them. Behaviours not recognised by the model are labelled abnormal. MRS employing these models do not transition well to scenarios involving gradual changes ...

2010
Lee Pike

I revisit the fault-tolerance of cyclic redundancy checks (CRCs), expanding on the work of Driscoll et al [1]. I introduce the concepts of Schrödinger-Hamming weight and Schrödinger-Hamming distance, and I argue that under a fault model in which stuck-at-one-half or slightly-out-of-spec faults dominate, current methods for computing the fault detection of CRCs may be over-optimistic. Keywords-c...

Journal: :Int. J. Control 2015
S. Ghasemi K. Khorasani

Abstract—In this paper, the problem of fault detection and isolation in the attitude control subsystem of spacecraft formation flying is considered. In order to design the fault detection method, an extended Kalman filter is utilized which is a nonlinear stochastic state estimation method. Three fault detection architectures, namely, centralized, decentralized, and semi-decentralized are design...

2006
MANUEL J. LÓPEZ LUIS GARCÍA

This paper describes a new procedure to design robust H∞ controller with time domain specifications and a fault detection method for MIMO system. Controller design parameters and fault detection method are calculated solving multi-objective optimization problems which are based on genetic algorithms. Simulations tests are carried out to evaluate our design procedure, and satisfactory simulation...

2016
Hussein Taha Hussein Mohamed Ammar Mohamed Moustafa Hassan

This article presents a method for fault detection and diagnosis of stator inter-turn short circuitin three phase induction machines. The technique is based on the stator current and modelling in the dqframe using an Adaptive Neuro-Fuzzy artificial intelligence approach. The developed fault analysis method is illustrated using MATLAB simulations. The obtained results are promisingbased on the n...

2014
J. A. WAGH S. K. SHINDE

A wavelet transform method for fault detection of power supply circuit is presented. The wavelet transform is applied to the healthy and faulty circuit under test (CUT) to obtain transform coefficients. Standard deviation (SD) of transform coefficients are extracted to create fault dictionary. The simulation result shows effectiveness of transform based method for fault detection of power suppl...

In this paper, a new method for fault detection, location, and classification in multi-terminal DC microgrid (MTDC) is proposed. MTDC grids have expanded due to some issues such as the expansion of DC resources, loads, and aims to increase power quality. Diagnosing the types and location of faults is important to continue the service and prevent further outages. In this method, a circuit kit is...

2008
Jordi Meseguer Vicenç Puig Teresa Escobet

This paper proposes a fault diagnosis method using a timed discrete-event approach based on interval observers which improves the integration of fault detection and isolation tasks. The interface between fault detection and fault isolation considers the degree of fault signal activation and the occurrence time of the diagnostic signals using a combination of several theoretical fault signature ...

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