Log in

Relevant bibliographies by topics / Current signature

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Current signature'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 June 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Current signature.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Current signature"

1

Kutskir, H. "CURRENT METHODS OF SIGNATURES’ TECHNICAL FORGING WITH THE USE OF TECHNICAL MEANS." Theory and Practice of Forensic Science and Criminalistics 21, no. 1 (2020): 309–17. http://dx.doi.org/10.32353/khrife.1.2020_20.

Full text

Abstract:

 Taking into account a significant scientific and technological progress, use of modern monochrome or multicolor photocopiers in the office administration, and the increase in this regard in the number of signatures received for examination by forensic expert units, relevance for continuing to study signatures as one of the essential requisites of many types of documents and methods of their technical forgery becomes obvious. The purpose of the article is to highlight certain issues of current methods of signatures technical forgery. Research methods: general (formal-logical methods of cognition: analysis, synthesis, generalization, analogy), general scientific (observation, measurement, description, comparison), special (visual, microscopic, photographic). Since the fact of handwritten signature execution possesses legal value, it often becomes the object of forgery. For this purpose, a variety of techniques is used. Criminals often resort to the so-called technical forgery of signatures on documents (performing signatures on behalf of another person using various techniques and technical means which helps to achieve the greatest similarity with the original) along with the usual graphic forgery. The essence of signatures technical forgery usually lies in mechanical copying, instead of imitating features of writing-motor skills and the signature-original. By such a signature, you can not measure the level of writing-motor skills of the performer. Each of the methods of signature technical forgery leaves in the signature the signs inherent only to this method. Studying such methods and their features collectively will allow to diagnose the fact of handwritten or technical execution of a signature with a sufficiently high degree of probability.

APA, Harvard, Vancouver, ISO, and other styles

2

A, Jun, Baotong Zhang, Zhiqian Zhang, Hailiang Hu, and Jin-Tang Dong. "Novel Gene Signatures Predictive of Patient Recurrence-Free Survival and Castration Resistance in Prostate Cancer." Cancers 13, no. 4 (2021): 917. http://dx.doi.org/10.3390/cancers13040917.

Full text

Abstract:

Molecular signatures predictive of recurrence-free survival (RFS) and castration resistance are critical for treatment decision-making in prostate cancer (PCa), but the robustness of current signatures is limited. Here, we applied the Robust Rank Aggregation (RRA) method to PCa transcriptome profiles and identified 287 genes differentially expressed between localized castration-resistant PCa (CRPC) and hormone-sensitive PCa (HSPC). Least absolute shrinkage and selection operator (LASSO) and stepwise Cox regression analyses of the 287 genes developed a 6-gene signature predictive of RFS in PCa. This signature included NPEPL1, VWF, LMO7, ALDH2, NUAK1, and TPT1, and was named CRPC-derived prognosis signature (CRPCPS). Interestingly, three of these 6 genes constituted another signature capable of distinguishing CRPC from HSPC. The CRPCPS predicted RFS in 5/9 cohorts in the multivariate analysis and remained valid in patients stratified by tumor stage, Gleason score, and lymph node status. The signature also predicted overall survival and metastasis-free survival. The signature’s robustness was demonstrated by the C-index (0.55–0.74) and the calibration plot in all nine cohorts and the 3-, 5-, and 8-year area under the receiver operating characteristic curve (0.67–0.77) in three cohorts. The nomogram analyses demonstrated CRPCPS’ clinical applicability. The CRPCPS thus appears useful for RFS prediction in PCa.

APA, Harvard, Vancouver, ISO, and other styles

3

Ma, Li Zhen. "Improved VLR Group Signature Based on DTDH Assumption." Advanced Engineering Forum 6-7 (September 2012): 520–24. http://dx.doi.org/10.4028/www.scientific.net/aef.6-7.520.

Full text

Abstract:

In VLR (verifier-local revocation) group signatures, revocation messages are only sent to signature verifiers (as opposed to both signers and verifiers). Consequently there is no need to contact individual signers when some user is revoked. Since signers have no load, the VLR group signature schemes are suitable for mobile environments. To meet the requirement of speediness in mobile communication, reducing computation costs and shortening signature length are two requirements at the current research of VLR group signatures. Based on this idea, an improved version of Zhou’s VLR group signature is given. Compared with the original scheme, the improved scheme not only can achieve the same security level, but also has shorter signature size and lower computation costs.

APA, Harvard, Vancouver, ISO, and other styles

4

Roh, Dongyoung, Sangim Jung, and Daesung Kwon. "Winternitz Signature Scheme Using Nonadjacent Forms." Security and Communication Networks 2018 (June 21, 2018): 1–12. http://dx.doi.org/10.1155/2018/1452457.

Full text

Abstract:

Hash-based signatures are gaining attention as one of the alternatives that can replace current digital signatures that are not secure against an attack by quantum computers along with lattice-based signatures, multivariate signatures, and code-based signatures. Up to now, all hash-based signatures have used binary representations to generate signatures. In this paper, we propose using the nonadjacent form (NAF) when generating signatures in hash-based signatures. Concretely, we propose a hash-based signature scheme, WSS-N, which is obtained by applying nonadjacent forms (NAF) to the Winternitz signature scheme. We prove that WSS-N is existentially unforgeable under chosen message attacks in the standard model. And we show that WSS-N needs less hash function calls compared to the Winternitz signature scheme using the binary representation, WSS-B. For a specific parameter with a 256-bit security, we can see that WSS-N generates signatures faster than WSS-B by 8%. Finally, we implement both WSS-N and WSS-B and show that WSS-N generates signatures faster than WSS-B on a desktop computer.

APA, Harvard, Vancouver, ISO, and other styles

5

Garcia-Calva, Tomas A., Daniel Morinigo-Sotelo, Vanessa Fernandez-Cavero, Arturo Garcia-Perez, and Rene de J. Romero-Troncoso. "Early Detection of Broken Rotor Bars in Inverter-Fed Induction Motors Using Speed Analysis of Startup Transients." Energies 14, no. 5 (2021): 1469. http://dx.doi.org/10.3390/en14051469.

Full text

Abstract:

The fault diagnosis of electrical machines during startup transients has received increasing attention regarding the possibility of detecting faults early. Induction motors are no exception, and motor current signature analysis has become one of the most popular techniques for determining the condition of various motor components. However, in the case of inverter powered systems, the condition of a motor is difficult to determine from the stator current because fault signatures could overlap with other signatures produced by the inverter, low-slip operation, load oscillations, and other non-stationary conditions. This paper presents a speed signature analysis methodology for a reliable broken rotor bar diagnosis in inverter-fed induction motors. The proposed fault detection is based on tracking the speed fault signature in the time-frequency domain. As a result, different fault severity levels and load oscillations can be identified. The promising results show that this technique can be a good complement to the classic analysis of current signature analysis and reveals a high potential to overcome some of its drawbacks.

APA, Harvard, Vancouver, ISO, and other styles

6

Ritter, P., and H. Lühr. "Near-Earth magnetic signature of magnetospheric substorms and an improved substorm current model." Annales Geophysicae 26, no. 9 (2008): 2781–93. http://dx.doi.org/10.5194/angeo-26-2781-2008.

Full text

Abstract:

Abstract. Based on a comprehensive catalogue with more than 4000 magnetospheric substorm entries from the years 2000–2005, the spatial distribution of the substorm-related magnetic signatures at mid and low latitudes around local midnight was investigated. Superposed epoch analysis of a larger number of recent observatory data from mid and low latitudes revealed a field strength increase that is consistent with the results of earlier studies. For the first time, the magnetic signature of the substorm current wedge formation is studied also in near-Earth satellite data from CHAMP. The average maximal deflection measured on board the satellite is smaller by a factor of 2 than that determined from ground observations. The recurrence frequency of substorms as well as the amplitude of their magnetic signature depends strongly on the prevailing magnetic activity. The observed average substorm-related magnetic field signatures cannot be described adequately by a simple current wedge model. A satisfactory agreement between model results and observations at satellite height and on ground can be achieved only if the current reconfiguration scenario combines four elements: (1) the gradual decrease of the tail lobe field, (2) the re-routing of a part of the cross-tail current through the ionosphere, (3) eastward ionospheric currents at low and mid latitudes driven by Region-2 field-aligned currents, and (4) a partial ring current connected to these Region-2 FACs.

APA, Harvard, Vancouver, ISO, and other styles

7

Roque, A., J. M. F. Calado, and J. M. Ruiz. "Vibration Analysis versus Current Signature Analysis." IFAC Proceedings Volumes 45, no. 20 (2012): 794–99. http://dx.doi.org/10.3182/20120829-3-mx-2028.00286.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Kliman, G. B., and J. Stein. "Methods of Motor Current Signature Analysis." Electric Machines & Power Systems 20, no. 5 (1992): 463–74. http://dx.doi.org/10.1080/07313569208909609.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Nkwinkwa Njouodo, Arielle Stela, Shunya Koseki, Noel Keenlyside, and Mathieu Rouault. "Atmospheric Signature of the Agulhas Current." Geophysical Research Letters 45, no. 10 (2018): 5185–93. http://dx.doi.org/10.1029/2018gl077042.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Bradshaw, E. G., and M. Lester. "SABRE observations of Pi2 pulsations: case studies." Annales Geophysicae 15, no. 1 (1997): 40–53. http://dx.doi.org/10.1007/s00585-997-0040-3.

Full text

Abstract:

Abstract. The characteristics of substorm-associated Pi2 pulsations observed by the SABRE coherent radar system during three separate case studies are presented. The SABRE field of view is well positioned to observe the differences between the auroral zone pulsation signature and that observed at mid-latitudes. During the first case study the SABRE field of view is initially in the eastward electrojet, equatorward and to the west of the substorm-enhanced electrojet current. As the interval progresses, the western, upward field-aligned current of the substorm current wedge moves westward across the longitudes of the radar field of view. The westward motion of the wedge is apparent in the spatial and temporal signatures of the associated Pi2 pulsation spectra and polarisation sense. During the second case study, the complex field-aligned and ionospheric currents associated with the pulsation generation region move equatorward into the SABRE field of view and then poleward out of it again after the third pulsation in the series. The spectral content of the four pulsations during the interval indicate different auroral zone and mid-latitude signatures. The final case study is from a period of low magnetic activity when SABRE observes a Pi2 pulsation signature from regions equatorward of the enhanced substorm currents. There is an apparent mode change between the signature observed by SABRE in the ionosphere and that on the ground by magnetometers at latitudes slightly equatorward of the radar field of view. The observations are discussed in terms of published theories of the generation mechanisms for this type of pulsation. Different signatures are observed by SABRE depending on the level of magnetic activity and the position of the SABRE field of view relative to the pulsation generation region. A twin source model for Pi2 pulsation generation provides the clearest explanation of the signatures observed.

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Current signature"

1

Zanger, Michael S. "Current federal identity management and the dynamic signature biometrics option." Thesis, Monterey, Calif. : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/March/09Mar%5FZanger.pdf.

Full text

Abstract:

Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, March 2009.<br>Thesis Advisor(s): Sankar, Pat. "March 2009." Description based on title screen as viewed on April 24, 2009. Author(s) subject terms: Biometrics, Biometrics Task Force, Dynamic Signature Biometrics, Identity Management, IdM Enterprise. Includes bibliographical references (p. 117-118). Also available in print.

APA, Harvard, Vancouver, ISO, and other styles

2

Štěpanovský, Libor. "Vyhodnocení provozního stavu asynchronních motorů jaderné elektrárny Dukovany metodou frekvenční analýzy statorového proudu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442548.

Full text

Abstract:

The masters thesis is concerned with the setting of limits and criteria, the design of database environment and the evaluation of the current state of motors of the important machines related to own consumption of the Nuclear power plant Dukovany. The first part of the thesis is a short description of induction motors, the evaluation method and the inventory of the observed motors related to own consumption of Nuclear power plant Dukovany. The second part of the thesis concerns the design of limits and criteria for evaluating the current state of these important motors. Finally, the thesis shows a short description of the electro monitoring system together with the description of the database environment created. In the supplementary materials of the thesis, there is a design of a protocol template for evaluation of the current state of the motor and a technical report template for regular evaluation in monitored areas MCSA (Motor Current Signature Analysis) of the state of the induction motors.

APA, Harvard, Vancouver, ISO, and other styles

3

Davari, Ardakani Hossein. "Prognostics and Health Management of Engineering Systems Using Minimal Sensing Techniques." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1467987980.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Bouslama, Mohamed. "Approche duale de modélisation TCAD et de caractérisations électriques approfondies pour la détermination de la signature et de la localisation des pièges dans les HEMT GaN sur substrat SiC." Thesis, Limoges, 2020. http://www.theses.fr/2020LIMO0076.

Full text

Abstract:

Les HEMT à base du GaN ont déjà démontré leur potentialité pour toutes les applications forte puissance et haute fréquence. Cependant, cette technologie souffre de limitations dues notamment à un mécanisme complexe de piégeage/dépiégeage de charges qui se produit dans le composant et reste encore aujourd’hui mal compris. Ce mécanisme de piégeage limite les performances RF et mais également la fiabilité du transistor. Dans ce travail, nous avons étudié les mécanismes issus de ce phénomène à l'aide de plusieurs méthodes de mesures approfondies (Paramètres S en basse fréquence, I-DLTS, densités spectrales de courant de bruit) qui nous ont permis d’extraire la signature des pièges. Grâce à de la simulation TCAD sur le logiciel de simulation Sentaurus, nous avons pu identifier l'emplacement physique de certains pièges dans le composant et comprendre les phénomènes physiques mis-en jeu. Cet apport fournira des informations efficaces pour les améliorations technologiques dans le futur<br>GaN-based HEMTs have already demonstrated their supreme potential for all high power and high frequency applications. However, this technology suffers from limitations due to complex trapping/de-trapping mechanisms that occurs in the device and that are still not well understood. This trapping mechanism limits the RF performances but also undermines the device reliability. In this work, we have investigated the trapping mechanisms using different advanced measurements techniques (LF S-parameter measurements, I-DLTS, noise current spectral density) to identify the signature of traps.Thanks to SentaurusTCAD simulation, we have identified and understood the physical location of several traps in the device. This contribution would provide an efficient feedback for future technological improvements

APA, Harvard, Vancouver, ISO, and other styles

5

Micchi, Gianluca. "Mechanical signatures of the current-blockade instability in suspended carbon nanotubes." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0337/document.

Full text

Abstract:

Le couplage fort entre le transport électronique dans une boîte quantique à un seul niveau et un oscillateur nano-mécanique couplé capacitivement peut conduire à une transition vers un état mécaniquement bistable et bloqué en courant. Son observation est à portée de main dans les expériences de pointe menées sur les nanotubes de carbone. Nous étudions donc la réponse mécanique du système et plus précisément la fonction spectrale de déplacement, la réponse linéaire à une solicitation externe et le comportement pendant le retour à l'équilibre. Nous montrons qu'il existe une relation étroite entre les grandeurs électriques (telles le courant électrique et la fonction spectrale des fluctuations du courant) et mécaniques. Nous constatons qu'en augmentant le couplage électromécanique, les deux fonctions spectrales présentent un pic qui s'élargit et se déplace vers les basses fréquences alors que le temps de déphasage de l'oscillateur se raccourcit. Ces effets sont maximaux à la transition où les non-linéarités dominent la dynamique et sont robustes vis-à-vis de l'effet des fluctuations extérieures et de la dissipation. Ces caractéristiques fortes ouvrent la voie à la détection de la transition vers l'état de blocage du courant dans des dispositifs actuellement étudiées par plusieurs groupes<br>The strong coupling between electronic transport in a single-level quantum dot and a capacitively coupled nano-mechanical oscillator may lead to a transition towards a mechanically-bistable and blocked-current state. Its observation is at reach in carbonnanotube state-of-art experiments. Therefore, we investigate the mechanical response of the system, namely the displacement spectral function, the linear response to a driving, and the ring-down behavior, and the electric response, namely the electric current and current spectral function. We show that a close relation between electric and mechanical quantities exists. We find that, by increasing the lectromechanical coupling, the peak in both spectral functions broadens and shifts at low frequencies while the oscillator dephasing time shortens. These effects are maximum at the transition where nonlinearities dominate the dynamics, and are robust towards the effect of external uctuations and dissipation. These strong signatures open the way to detect the blockade transition in devices currently studied by several groups

APA, Harvard, Vancouver, ISO, and other styles

6

Lam, Hoi-yee. "Voltage-current trajectory a 2-dimensional approach to understand electrical load signatures /." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B3890861X.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Lam, Hoi-yee, and 林凱儀. "Voltage-current trajectory: a 2-dimensional approach to understand electrical load signatures." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B3890861X.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Ashnibha, Rmdan Abdussalm. "An investigation into current and vibration signatures of three phase induction motors." Thesis, Manchester Metropolitan University, 2012. http://e-space.mmu.ac.uk/314037/.

Full text

Abstract:

This research aimed at investigating the relationship between three phase induction motors vibration (MVS) and current signatures (MCS). This is essential due to the cost of vibration measuring equipment and in cases where vibration of interest point is not accessible; such as electrical submersible pumps (ESP) used in oil industry. A mathematical model was developed to understand the effects of two types of induction motors common faults; rotor bar imperfections and phase imbalance on the motor vibration and current signatures. An automated test facility was developed in which 1.1 kW three phase motor could be tested under varying shaft rotation speeds and loads for validating the developed model. Time and frequency domains statistical parameters of the measured signals were calculated for fault detection and assessing its severity. The measured signals were also processed using the short time Fourier transform (STFT), the Wigner-Ville distribution (WVD), the continuous wavelet transform (CWT) and discrete wavelet transform (DWT) and wavelet multi-resolution analysis (MRA). The non-stationary components, representing faults within induction motor measured vibration and current signals, were successfully detected using wavelet decomposition technique. An effective alternative to direct vibration measurement scheme, based on radial basis function networks, was developed to the reconstruction of motor vibration using measurements of one phase of the motor current. It was found that this method captured the features of induction motor faults with reasonable degrees of accuracy. Another method was also developed for the early detection and diagnosis of faults using an enhanced power factor method. Experimental results confirmed that the power factor can be used successfully for induction motor fault diagnosis and is also promising in assessing fault severity. The suggested two methods offer inexpensive, reliable and non-intrusive condition monitoring tools that suits real-time applications. Directions for further work were also outlined.

APA, Harvard, Vancouver, ISO, and other styles

9

Souche, Germain. "Signature calorimétrique de cohérence de phase quantique dans des anneaux mésoscopiques." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENY037.

Full text

Abstract:

Dans ce manuscrit, nous présentons des mesures haute résolution de chaleur spécifique Cp réalisées sur des anneaux mésoscopiques d'argent à très basses températures. Le but de cette expérience est de mettre en évidence une possible signature thermique due à la présence de courants permanents. Ce phénomène reste encore mal compris malgré de nombreuses expériences. Il existe en effet des contradictions entre les différents modèles théoriques et les résultats expérimentaux. L'approche thermique que nous exposons ici est un angle nouveau qui n'a jamais été exploré. Sous champ magnétique, une oscillation de période égale au quantum de flux Φ0=h/e (ou moitié) de Cp est attendue théoriquement. L'échantillon étudié est composé d'un grand nombre d'anneaux d'argent mésoscopiques déposés sur une membrane en silicium suspendue. Nous avons réalisé, à différentes températures, de multiples balayages en champ de la chaleur spécifique. Un traitement des signaux obtenus a ensuite été réalisé afin de repérer une éventuelle périodicité. Il a révélé la présence sur le signal de phase d'une oscillation de période h/2e n'apparaissant pas sur le module de la chaleur spécifique. Cette signature est maximale à 100mK. La fréquence et l'amplitude obtenues sont en accord avec les prédictions théoriques. La sensibilité atteinte est de ΔC~10^(-14)J/K sur le module (et de Δφ~10^(-2) degrés sur la phase) soit 10^(-21)J/K par anneau. Les résultats présentés ici apportent donc de nouveaux éléments dans l'analyse des courants permanents<br>In this thesis, we report very high resolution specific heat measurements of normal metal mesoscopic silver rings at very low temperatures. The objective of this experiment is to measure the possible existence of thermal signatures due to the presence of persistent currents. This phenomenon is still misunderstood despite many measurements. Some contradictions exist between experimental results and the different theories. The thermal approach is a new point of view. Under magnetic field, the Cp variation is expected be periodic with the quantum of flux Φ0=h/e or half of the quantum of flux as it has been theoretically predicted. The studied samples is composed by a large number of silver rings with an electronic phase coherence length of few microns at low temperatures. They were deposited on the suspended membrane of a silicon sensor. We have realized, at different temperatures, a large number of identical scans of the heat capacity variation as a function of the applied field. A signal processing work on this data has then been realized to detect signal periodicities. It showed a difference between the module and the phase of the heat capacity. A peak can be observed on the FFT at a frequency corresponding to h/2e on the phase signal. The peak appears particularly at 100mK with a amplitude which is consistent with previous calculations. A sensitivity of ΔC~10^(-14)J/K on the module (Δφ~10^(-2) degrees on the phase) has been reached whether 10^(-21)J/K per ring. Thus, the presented experiences give new elements in the field of persistent currents

APA, Harvard, Vancouver, ISO, and other styles

10

Fabricio, Marcos Aurelio. "Monitoramento de Equipamentos El?tricos Industriais Utilizando IoT." Pontif?cia Universidade Cat?lica de Campinas, 2018. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/1059.

Full text

Abstract:

Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2018-04-10T12:01:51Z No. of bitstreams: 1 MARCOS AUR?LIO BEHRENS.pdf: 3872179 bytes, checksum: edb54d47e1f7953187e4e8675003302b (MD5)<br>Made available in DSpace on 2018-04-10T12:01:51Z (GMT). No. of bitstreams: 1 MARCOS AUR?LIO BEHRENS.pdf: 3872179 bytes, checksum: edb54d47e1f7953187e4e8675003302b (MD5) Previous issue date: 2018-02-08<br>The objective of this work is to monitor the electrical equipment of a production line, aiming at monitoring in real time the state of the operation of the monitored machines, allowing the accomplishment of equipment management and early detection of operational deviations and faults. The developed system performs the measurement of the effective electric current through monitored equipment, use a network of sensors connected to a data concentrator module, which in turn performs the intermediate storage, the preliminary treatment of the data and the subsequent send an Internet platform of Things (Internet of Things - IoT). The preliminary treatment of data for analysis of the time series of values of electric currents to obtain an initial evaluation of the state of operation of the monitored machine. Then, the pre-processed information is sent via the internet, a usage platform for term storage, post-processing and real-time visualization of the data by users of interest. In the data platform, the data is formatted for visualization and evaluation of the users, allowing the presentation of alerts and knowledge when deviations are detected in relation to the normal operational parameters. When a current consumption behavior deviation is detected, correlating a potential failure type, the system signals additional information to a User's interest group (to the supervisor of the production line, for example), which in a planned manner, proceeds to some intervention without equipment, without prejudice of the production. The availability of the full-time series of stored data as well as the history of occurrences recorded throughout the use of the monitoring system but is still looking for correlations between data of other origins and nature, and the interpretation of the same data under other perspectives beyond the operation or maintenance of the machine. The monitoring system proposed in this work allows to provide a minimum of automation in old machines and opens the possibility of independent, parallel and non-intrusive monitoring in machines that already have a modern supervisory system. An industry that achieves the goal of making all its production equipment fully monitored is credited to take the next step towards Industry 4.0.<br>Este trabalho tem como objetivo apresentar um sistema de monitoramento de equipamentos el?tricos de uma linha de produ??o, visando o acompanhamento em tempo real do estado de opera??o das m?quinas monitoradas, permitindo a realiza??o da gest?o de opera??o desses equipamentos e a detec??o antecipada de desvios operacionais e de falhas. O sistema desenvolvido realiza a medi??o da corrente el?trica eficaz consumida pelos equipamentos monitorados, utilizando uma rede de sensores conectados a um m?dulo concentrador de dados, que por sua vez realiza o armazenamento intermedi?rio, o tratamento preliminar dos dados e o posterior envio a uma plataforma de Internet da Coisas (Internet of Things - IoT). O tratamento preliminar de dados visa ? an?lise da s?rie temporal dos valores das correntes el?tricas com o fim de obter uma avalia??o inicial do estado de opera??o da m?quina monitorada. Em seguida, essas informa??es pr?-processadas s?o enviadas via internet a uma plataforma de IoT com o objetivo de armazenamento a longo prazo, p?s-processamento e visualiza??o em tempo real dos dados pelos usu?rios de interesse. Na plataforma de IoT, os dados s?o formatados para exibi??o e avalia??o dos usu?rios considerando formatos gr?ficos compreens?veis, sendo poss?vel a emiss?o de alertas e de relat?rios ao serem detectados desvios em rela??o aos par?metros operacionais normais. Ao ser detectado um desvio de comportamento no consumo de corrente, correlacionando a algum tipo de falha em potencial, o sistema sinaliza informa??es adicionais a um usu?rio de interesse (ao supervisor da linha de produ??o, por exemplo), que de forma planejada, procede a alguma interven??o no equipamento, sem preju?zo da produ??o. A disponibilidade da s?rie temporal completa dos dados armazenados bem como o hist?rico de ocorr?ncias registrados ao longo do uso do sistema de monitoramento permite ainda a busca de correla??es entre dados de outras origens e naturezas, e a interpreta??o dos mesmos dados sob outras ?ticas em contextos al?m da opera??o ou manuten??o da m?quina. O sistema de monitoramento proposto permite prover um m?nimo de automa??o em m?quinas antigas e abre a possibilidade de monitoramento independente, paralela e n?o intrusiva em m?quinas que j? contam com um sistema supervis?rio moderno. Uma ind?stria que atinja o objetivo de tornar o conjunto de seus equipamentos produtivos totalmente monitorado se credencia para dar o pr?ximo passo rumo ? Ind?stria 4.0.

APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Current signature"

1

Thomson, William T., and Ian Culbert. Current Signature Analysis for Condition Monitoring of Cage Induction Motors. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119175476.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Oversight hearing on traumatic brain injury (TBI): Progress in treating the signature wounds of the current conflicts : hearing before the Committee on Veterans' Affairs, United States Senate, One Hundred Eleventh Congress, first [i.e. second] session, May 5, 2010. U.S. G.P.O., 2011.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

König, Karin. Freedom of association, East and West: Current law and practice in Helsinki signatory countries. Helsinki Watch, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

San Francisco (Calif.). Office of the Controller. Audits Division. Airport Commission: Review of Travelex America, Inc., foreign currency exchange operations at the San Francisco International Airport. Office of the Controller, 2003.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Chattopadhyay, Surajit, Madhuchhanda Mitra, Samarjit Sengupta, and Subrata Karmakar. Induction Motor Fault Diagnosis: Approach through Current Signature Analysis. Springer, 2018.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Chattopadhyay, Surajit, Madhuchhanda Mitra, Samarjit Sengupta, and Subrata Karmakar. Induction Motor Fault Diagnosis: Approach through Current Signature Analysis. Springer, 2016.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Culbert, Ian, and William T. Thomson. Current Signature Analysis for Condition Monitoring of Cage Induction Motors: Industrial Application and Case Histories. Wiley & Sons, Incorporated, John, 2016.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

Culbert, Ian, and William T. Thomson. Current Signature Analysis for Condition Monitoring of Cage Induction Motors: Industrial Application and Case Histories. Wiley & Sons, Incorporated, John, 2016.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Culbert, Ian, and William T. Thomson. Current Signature Analysis for Condition Monitoring of Cage Induction Motors: Industrial Application and Case Histories. Wiley-Interscience, 2017.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

Fitzgerald, Jim, and Frank Clark. Heritage F.U.N. Currency Signature Auction #396. Heritage Auctions, Inc., 2006.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Current signature"

1

Iraji, Maryam, Maryam Dehghani, Mohsen Mohammadi, Navid Vafamand, and Jalil Boudjadar. "Motor Current Signature Analysis Using Shapelet." In Proceedings of the 27th International Conference on Systems Engineering, ICSEng 2020. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65796-3_3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Krämer, Juliane, Dmitry Nedospasov, and Jean-Pierre Seifert. "Weaknesses in Current RSA Signature Schemes." In Information Security and Cryptology - ICISC 2011. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31912-9_11.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Thomson, William T. "Motor Current Signature Analysis for Induction Motors." In Current Signature Analysis for Condition Monitoring of Cage Induction Motors. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119175476.ch1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Thomson, William T. "Motor Current Signature Analysis (MCSA) to Detect Cage Winding Defects." In Current Signature Analysis for Condition Monitoring of Cage Induction Motors. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119175476.ch4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

de las Heras, Lluís-Pere, David Fernández, Alicia Fornés, Ernest Valveny, Gemma Sánchez, and Josep Lladós. "Runlength Histogram Image Signature for Perceptual Retrieval of Architectural Floor Plans." In Graphics Recognition. Current Trends and Challenges. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44854-0_11.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Dyer, Adrian G., Bryan Found, Mara L. Merlino, Avni L. Pepe, Doug Rogers, and Jodi C. Sita. "Eye Movement Evaluation of Signature Forgeries: Insights to Forensic Expert Evidence." In Current Trends in Eye Tracking Research. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-02868-2_16.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Khatri, Purvesh, and Minnie M. Sarwal. "Functional Pathway Analysis for Understanding Immunologic Signature of Rejection: Current Approaches and Outstanding Challenges." In Immunologic Signatures of Rejection. Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7219-4_16.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Pepe, Avni, and Jodi Sita. "Gaze Shifts and Pen Velocity Minima During Line Copying with Consideration to Signature Simulation." In Current Trends in Eye Tracking Research. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-02868-2_6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Culbert, Ian. "Design, Construction, and Manufacture of Squirrel Cage Rotors." In Current Signature Analysis for Condition Monitoring of Cage Induction Motors. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119175476.ch2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Thomson, William T. "MCSA to Estimate the Operational Airgap Eccentricity in Squirrel Cage Induction Motors." In Current Signature Analysis for Condition Monitoring of Cage Induction Motors. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119175476.ch10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Current signature"

1

"AGREEMENT AND ELECTRONIC DIGITAL SIGNATURE." In Current Issue of Law in the Banking Sphere. Samara State Economic University, 2019. http://dx.doi.org/10.46554/banking.forum-10.2019-186/191.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Eren, Levent, and Michael J. Devaney. "Effect of current resampling in Motor Current Signature Analysis." In 2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC). IEEE, 2013. http://dx.doi.org/10.1109/i2mtc.2013.6555437.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Jannssen, J. A. A. J., H. Hasenpflug, and M. Janßen. "COSIMAR: Continuous Operational Signature Monitoring Awareness and Recommendation." In 14th International Naval Engineering Conference and Exhibition. IMarEST, 2018. http://dx.doi.org/10.24868/issn.2515-818x.2018.027.

Full text

Abstract:

Crews of naval vessels lack an up-to-date awareness of those aspects of a ship’s susceptibility to threats that are related to the actual ship signatures (acoustic, magnetic, infrared, etc.). The ship’s susceptibility depends among others on the current configuration of the ship, the environment, the enemy sensor capabilities and the related ship signature levels. For operational purposes, it is desirable that crews have a tool which informs and advises them on the ship signatures, on ways of managing them and on the consequential detection ranges of adversary sensors in the current tactical situation. A functional demonstrator for such a support tool, called COSIMAR (Continuous Operational Signature Monitoring Awareness and Recommendation), has been developed and tested in a laboratory environment in an international project. The background and approach of this international cooperation between Canada, Germany, Norway, Belgium and The Netherlands had been presented at the INEC conference 2014 in Amsterdam. This year's presentation will show the result of this joint effort. The architecture, human machine interface, signature and susceptibility models will be addressed, including the laboratory environment simulating all required platform and environmental input.

APA, Harvard, Vancouver, ISO, and other styles

4

Chaudhry, Rajat, David Blaauw, Rajendran Panda, and Tim Edwards. "Current signature compression for IR-drop analysis." In the 37th conference. ACM Press, 2000. http://dx.doi.org/10.1145/337292.337362.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Guo, Jiegong, Xinhua Cai, and He Yigang. "PRBS Test Signature Analysis of Switched Current Circuit." In 2009 1st International Conference on Information Science and Engineering (ICISE 2009). IEEE, 2009. http://dx.doi.org/10.1109/icise.2009.842.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Gattiker, Anne E., Phil Nigh, and Wojciech Maly. "Current-Signature-Based Analysis of Complex Test Fails." In ISTFA 1999. ASM International, 1999. http://dx.doi.org/10.31399/asm.cp.istfa1999p0377.

Full text

Abstract:

Abstract This article provides an analysis of a class of failures observed during the SEMATECH-sponsored Test Methods Experiment. The analysis focuses on use of test-based failure analysis and IDDQ signature analysis to gain insight into the physical mechanisms underlying such subtle failures. In doing so, the analysis highlights techniques for understanding failure mechanisms using only tester data. In the experiment, multiple test methods were applied to a 0.45 micrometer effective channel length ASIC. Specifically, ICs that change test behavior from before to after burn-in are studied to understand the physical nature of the mechanism underlying their failure. Examples of the insights provided by the test-based analysis include identifying cases where there are multiple or complex defects and distinguishing cases where the defect type is likely to be a short versus an open and determining if the defect is marginal. These insights can be helpful for successful failure analysis.

APA, Harvard, Vancouver, ISO, and other styles

7

Prathiba, M. K., and L. Basavaraj. "Online Handwritten Signature Verification System Based OnBayes’ Theorem." In Third International Conference on Current Trends in Engineering Science and Technology ICCTEST-2017. Grenze Scientific Society, 2017. http://dx.doi.org/10.21647/icctest/2017/49104.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

AlBader, Mesaad, and Hamid A. Toliyat. "Wavelet Scattering Transform Based Induction Motor Current Signature Analysisa." In 2020 International Conference on Electrical Machines (ICEM). IEEE, 2020. http://dx.doi.org/10.1109/icem49940.2020.9270810.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Caiman, Dadiana-Valeria, and Toma-Leonida Dragomir. "Two voltage-current load signature classes for residential consumers." In 2018 22nd International Conference on System Theory, Control and Computing (ICSTCC). IEEE, 2018. http://dx.doi.org/10.1109/icstcc.2018.8540715.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Gheitasi, Alireza, Peter Wolfs, and Sanath Alahakoon. "Distributed Motor Current Signature Analysis in an IoT Environment." In 2019 29th Australasian Universities Power Engineering Conference (AUPEC). IEEE, 2019. http://dx.doi.org/10.1109/aupec48547.2019.211811.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Current signature"

1

Castleberry, K. N. High-vibration detection using motor current signature analysis. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/366465.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Castleberry, K. N. Instrumentation for motor-current signature analysis using synchronous sampling. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/273820.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Blakeman, E. D., and R. C. Kryter. Noninvasive testing of solenoid-operated valves using transient current signature analysis. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/463637.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Gabe V. Garcia. Eddy Current Signature Classification of Steam Generator Tube Defects Using A Learning Vector Quantization Neural Network. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/836575.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Revill, James, Alisha Anand, and Giacomo Persi Paoli. Exploring Science and Technology Review Mechanisms Under the Biological Weapons Convention. The United Nations Institute for Disarmament Research, 2021. http://dx.doi.org/10.37559/sectec/2021/sandtreviews/01.

Full text

Abstract:

Since the Biological Weapons Convention (BWC) opened for signature in 1972, biology and other converging disciplines have advanced considerably. These changes could have profound implications for a science-based disarmament agreement like the BWC. To address changes in biology and biotechnology, BWC States Parties have established processes to review developments in science and technology (S&T), including annual expert meetings on this topic. However, shortcomings are evident in the current approaches and many BWC States Parties have expressed support for a more systematic review of science and technology under the Convention. This study seeks to inform discussions on establishing a dedicated and systematic S&T review process under the BWC through an examination of existing S&T review-type mechanisms employed in different regimes beyond the BWC, a survey of States Parties views on a possible review mechanism and a study of past and present discourse on this issue in the BWC. Based on the analysis conducted, this study also presents options for BWC States Parties to consider ahead of the Ninth BWC Review Conference.

APA, Harvard, Vancouver, ISO, and other styles

6

Blevins, Matthew, Gregory Lyons, Carl Hart, and Michael White. Optical and acoustical measurement of ballistic noise signatures. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/39501.

Full text

Abstract:

Supersonic projectiles in air generate acoustical signatures that are fundamentally related to the projectile’s shape, size, and velocity. These characteristics influence various mechanisms involved in the generation, propagation, decay, and coalescence of acoustic waves. To understand the relationships between projectile shape, size, velocity, and the physical mechanisms involved, an experimental effort captured the acoustic field produced by a range of supersonic projectiles using both conventional pressure sensors and a schlieren imaging system. The results of this ongoing project will elucidate those fundamental mechanisms, enabling more sophisticated tools for detection, classification, localization, and tracking. This paper details the experimental setup, data collection, and preliminary analysis of a series of ballistic projectiles, both idealized and currently in use by the U.S. Military.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!