The Theory of Functions / James Harkness and Frank Morley (Review).
H. Maschke (1893/94)
Bulletin of the New York Mathematical Society
Similarity:
H. Maschke (1893/94)
Bulletin of the New York Mathematical Society
Similarity:
Suk J. Seo, Peter J. Slater (2015)
Discussiones Mathematicae Graph Theory
Similarity:
For various domination-related parameters involving locating devices (distinguishing sets) that function as places from which detectors can determine information about the location of an “intruder”, several types of possible detector faults are identified. Two of these fault tolerant detector types for distinguishing sets are considered here, namely redundant distinguishing and detection distinguishing. Illustrating these concepts, we focus primarily on open-locating-dominating sets. ...
J. Sosnowski, P. Gawkowski, A. Lesiak (2004)
Control and Cybernetics
Similarity:
Antoni Ligęza, Jan Maciej Kościelny (2008)
International Journal of Applied Mathematics and Computer Science
Similarity:
The diagnosis of multiple faults is significantly more difficult than singular fault diagnosis. However, in realistic industrial systems the possibility of simultaneous occurrence of multiple faults must be taken into account. This paper investigates some of the limitations of the diagnostic model based on the simple binary diagnostic matrix in the case of multiple faults. Several possible interpretations of the diagnostic matrix with rule-based systems are provided and analyzed. A proposal...
Amir Hossein Hassanabadi, Masoud Shafiee, Vicenç Puig (2016)
International Journal of Applied Mathematics and Computer Science
Similarity:
In this paper, the robust fault detection problem for LPV singular delayed systems in the presence of disturbances and actuator faults is considered. For both disturbance decoupling and actuator fault detection, an unknown input observer (UIO) is proposed. The aim is to compute a residual signal which has minimum sensitivity to disturbances while having maximum sensitivity to faults. Robustness to unknown inputs is formulated in the sense of the H∞ -norm by means of the bounded real...
Ivo Punčochář, Miroslav Šimandl (2014)
International Journal of Applied Mathematics and Computer Science
Similarity:
The paper considers the problem of active fault diagnosis for discrete-time stochastic systems over an infinite time horizon. It is assumed that the switching between a fault-free and finitely many faulty conditions can be modelled by a finite-state Markov chain and the continuous dynamics of the observed system can be described for the fault-free and each faulty condition by non-linear non-Gaussian models with a fully observed continuous state. The design of an optimal active fault...
Adrian Bilski, Jacek Wojciechowski (2016)
International Journal of Applied Mathematics and Computer Science
Similarity:
The aim of this paper is to introduce a strategy to find a minimal set of test nodes for diagnostics of complex analog systems with single parametric faults using the support vector machine (SVM) classifier as a fault locator. The results of diagnostics of a video amplifier and a low-pass filter using tabu search along with genetic algorithms (GAs) as node selectors in conjunction with the SVM fault classifier are presented. General principles of the diagnostic procedure are first introduced,...
Xavier Olive (2012)
International Journal of Applied Mathematics and Computer Science
Similarity:
The European leader for satellite systems and at the forefront of orbital infrastructures, Thales Alenia Space, is a joint venture between Thales (67%) and Finmeccanica (33%) and forms with Telespazio a Space Alliance. Thales Alenia Space is a worldwide reference in telecoms, radar and optical Earth observation, defence and security, navigation and science. It has 11 industrial sites in 4 European countries (France, Italy, Spain and Belgium) with over 7200 employees worldwide. Satellite...
Yvon Tharrault, Gilles Mourot, José Ragot, Didier Maquin (2008)
International Journal of Applied Mathematics and Computer Science
Similarity:
Principal component analysis (PCA) is a powerful fault detection and isolation method. However, the classical PCA, which is based on the estimation of the sample mean and covariance matrix of the data, is very sensitive to outliers in the training data set. Usually robust principal component analysis is applied to remove the effect of outliers on the PCA model. In this paper, a fast two-step algorithm is proposed. First, the objective was to find an accurate estimate of the covariance...
Jan Maciej Kościelny, Zofia M. Łabęda-Grudziak (2013)
International Journal of Applied Mathematics and Computer Science
Similarity:
This paper develops a new approach to double fault isolation in linear systems with the aid of directional residuals. The method of residual generation for computational as well as internal forms is applied. Isolation of double faults is based on the investigation of the coplanarity of the residual vector with the planes defined by the individual pairs of directional fault vectors. Additionally, the method of designing secondary residuals, which are structured and directional, is proposed....
Wang Hong-xia, Ye Xiao-hui, Wang Liang (2010)
Computer Science and Information Systems
Similarity:
Michael Ungermann, Jan Lunze, Dieter Schwarzmann (2012)
International Journal of Applied Mathematics and Computer Science
Similarity:
The paper presents a new approach to the generation of test signals used in service diagnosis. The tests make it possible to isolate faults, which are isolable only if the system is brought into specific operating points. The basis for the test signal selection is a structure graph that represents the couplings among the external and internal signals of the system and the fault signals. Graph-theoretic methods are used to identify edges that disappear under certain operating conditions...