Academic literature on the topic 'Filtre H1'

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Journal articles on the topic "Filtre H1"

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Syrneva, Aleksandra S., Vladimir V. Chesnokov, and Dimitry V. Chesnokov. "Research on Terahertz Filters Employing the Effect of Frustrated Total Internal Reflection." Key Engineering Materials 437 (May 2010): 281–85. http://dx.doi.org/10.4028/www.scientific.net/kem.437.281.

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The optical filter under development employing frustrated total internal reflection is a micromechanical device containing two silicon rectangular prisms. There is flat silicon plane among hypotenuse edges of the prisms. The silicon plane is a Fabry-Perot resonator, with clearances h1 among the plate and prism edges being its mirrors. Theoretical resolution of the optical filter would be R ≈ 1,5∙103 if h1 = 50 µm and R ≈ 3∙105 if h1 = 100 µm with the thickness of the silicon plane being h = 65 µm; wavelength λ = 100 µm; free spectral region Δλ/λ ≈ 0,3…0,4, transmission in the maximum of spectr
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Cao, Huiliang, Yingjie Zhang, Chong Shen, Yu Liu, and Xinwang Wang. "Temperature Energy Influence Compensation for MEMS Vibration Gyroscope Based on RBF NN-GA-KF Method." Shock and Vibration 2018 (December 2, 2018): 1–10. http://dx.doi.org/10.1155/2018/2830686.

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This paper proposed three methods to compensate the temperature energy influence drift of the MEMS vibration gyroscope, including radial basis function neural network (RBF NN), RBF NN based on genetic algorithm (GA), and RBF NN based on GA with Kalman filter (KF). Three-axis MEMS vibration gyroscope (Gyro X, Gyro Y, and Gyro Z) output data are compensated and analyzed in this paper. The experimental results proved the correctness of these three methods, and MEMS vibration gyroscope temperature energy influence drift is compensated effectively. The results indicate that, after RBF NN-GA-KF meth
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Uribe-Murcia, Karen, and Yuriy S. Shmaliy. "UFIR Filtering Under Uncertain One-Step Delayed and Missing Data." WSEAS TRANSACTIONS ON SIGNAL PROCESSING 16 (February 19, 2021): 191–96. http://dx.doi.org/10.37394/232014.2020.16.21.

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This paper develops the unbiased finite impulse response (UFIR) filter for wireless sensor network (WSN) systems whose measurements are affected by random delays and packet dropout due to inescapable failures in the transmission and sensors. The Bernoulli distribution is used to model delays in arrived measurement data with known transmission probability. The effectiveness of the UFIR filter is compared experimentally to the KF and game theory recursive H1 filter in terms of accuracy and robustness employing the GPS-measured vehicle coordinates transmitted with latency over WSN.
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Fu, Yu Long, Xiao Long Xin, and Jun Tao Wang. "State maps on semihoops." Open Mathematics 16, no. 1 (2018): 1061–76. http://dx.doi.org/10.1515/math-2018-0089.

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AbstractIn this paper, we introduce the notion of state maps from a semihoop H1 to another semihoop H2, which is a generalization of internal states (or state operators) on a semihoop H. Also we give a type of special state maps from a semihoop H1 to H1, which is called internal state maps (or IS-maps). Then we give some examples and basic properties of (internal) state maps on semihoops. Moreover, we discuss the relations between state maps and internal states on other algebras. Then we introduce several kinds of filters by state maps on semihoops, called SM-filters, state filters and dual st
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López Sarmiento, Danilo Alfonso, Octavio Jose Salcedo Parra, and René Geovani González Caballero. "EVALUACIÓN DEL DESEMPEÑO DE FILTRO ADAPTADO PARA RADIO COGNITIVA." Redes de Ingeniería 4, no. 2 (2013): 16. http://dx.doi.org/10.14483/2248762x.5921.

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Este proyecto evalúa el rendimiento en la localización de filtros emparejados para la detección del espectro en Radio Cognitiva. Para resolver el problema del modelo de detección espectral se aplican dos hipótesis Ho y H1, las cuales generaron la probabilidad de detección (PD) y la probabilidad de falsa alarma (PFA) sobre una señal para un radio de ruido determinado (SNR). Se muestra como los filtros adaptados mantienen el rendimiento y el cumplimiento de los requisitos establecidos por el IEEE 802.22 en los cambios en la PFA y la potencia del ruido.
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Marquez-Figueroa, Sandra, Yuriy S. Shmaliy, and Oscar Ibarra-Manzano. "Improving Gaussianity of EMG Envelope for Myoelectric Robot Arm Control." WSEAS TRANSACTIONS ON BIOLOGY AND BIOMEDICINE 18 (August 5, 2021): 106–12. http://dx.doi.org/10.37394/23208.2021.18.12.

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Several methods have been developed in biomedical signal processing to extract the envelope and features of electromyography (EMG) signals and predict human motion. Also, efforts were made to use this information to improve the interaction of a human body and artificial protheses. The main operations here are envelope acquiring, artifacts filtering, estimate smoothing, EMG value standardizing, feature classifying, and motion recognizing. In this paper, we employ EMG data to extract the envelope with a highest Gaussianity using the rectified signal, where we deal with the absolute EMG signals s
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Smith, Vivianne C., Joel Pokorny, Barry B. Lee, and Dennis M. Dacey. "Primate Horizontal Cell Dynamics: An Analysis of Sensitivity Regulation in the Outer Retina." Journal of Neurophysiology 85, no. 2 (2001): 545–58. http://dx.doi.org/10.1152/jn.2001.85.2.545.

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The human cone visual system maintains sensitivity over a broad range of illumination, from below 1 troland to 1,000,000 trolands. While the cone photoreceptors themselves are an important locus for sensitivity regulation—or light adaptation—the degree to which they contribute in primates remains unclear. To determine the range of sensitivity regulation in the outer retina, the temporal dynamics, neural gain control, and response range compression were measured in second-order neurons, the H1 horizontal cells, of the macaque retina. Situated at the first synapse in the retina, H1 cells receive
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Liu, Hai, Maiying Zhong, and Rui Yang. "Simultaneous Disturbance Compensation and H1/H∞ Optimization In Fault Detection Of UAVs." International Journal of Applied Mathematics and Computer Science 28, no. 2 (2018): 349–62. http://dx.doi.org/10.2478/amcs-2018-0026.

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Abstract This paper deals with the problem of robust fault detection (FD) for an unmanned aerial vehicle (UAV) flight control system (FCS). A nonlinear model to describe the UAV longitudinal motions is introduced, in which multiple sources of disturbances include wind effects, modeling errors and sensor noises are classified into groups. Then the FD problem is formulated as fault detection filter (FDF) design for a kind of nonlinear discrete time varying systems subject to multiple disturbances. In order to achieve robust FD performance against multiple disturbances, simultaneous disturbance c
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Liu, Siru, Kensaku Kawamoto, Guilherme Del Fiol, et al. "The potential for leveraging machine learning to filter medication alerts." Journal of the American Medical Informatics Association 29, no. 5 (2022): 891–99. http://dx.doi.org/10.1093/jamia/ocab292.

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Abstract Objective To evaluate the potential for machine learning to predict medication alerts that might be ignored by a user, and intelligently filter out those alerts from the user’s view. Materials and Methods We identified features (eg, patient and provider characteristics) proposed to modulate user responses to medication alerts through the literature; these features were then refined through expert review. Models were developed using rule-based and machine learning techniques (logistic regression, random forest, support vector machine, neural network, and LightGBM). We collected log dat
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Abotaleb, Mostafa, Janusz Mindykowski, Boleslaw Dudojć, and Romuald Maśnicki. "Simulation of Foundation Fieldbus Manchester Coded 31.25 kbps H1 Bus Using MATLAB and Simulink." Scientific Journal of Gdynia Maritime University, no. 123 (September 30, 2022): 18–31. http://dx.doi.org/10.26408/123.02.

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The purpose of this article is to provide an understanding of possible techniques through which a H1 31.25 kbps Foundation Fieldbus Manchester coded signal can be modulated or demodulated. This understanding will be rendered through MATLAB and SIMULINK models, simulating both ideal and practical as well as noiseless and noisy conditions during the modulation/demodulation process. The simulation models will differentiate between the modulation methods adopted to generate ideal rectangular as well as practical trapezoidal waveforms for the Manchester coded signal. The analysis of the simulation
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Dissertations / Theses on the topic "Filtre H1"

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Mohammedi, Irryhl. "Contribution à l’estimation robuste par intervalle des systèmes multivariables LTI et LPV : Application aux systèmes aérospatiaux." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0142.

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Les travaux présentés dans ce mémoire de thèse visent à développer de nouvelles approches basées sur une nouvelle classe particulière d’estimateurs d´état : les filtres dits par intervalles. Tout comme la classe des observateurs intervalles, l’objectif est d’estimer les bornes supérieures et inférieures des états d’un système, à chaque instant de temps. L’approche proposée repose sur la théorie des systèmes monotones et sur la connaissance a priori du domaine d’appartenance, supposé borné, des incertitudes de modèle et des entrées exogènes (perturbations, bruit de mesure, etc). L’élément clé d
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Conference papers on the topic "Filtre H1"

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J. de Oliveira, Bárbara, Víctor C. S. Campos, and Márcio F. Braga. "Estimação de Estados de uma Câmara Termoeletricamente Controlada utilizando Projetos de Filtros H1." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1748.

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O objetivo deste trabalho é apresentar e comparar duas estratégias de filtros para estimação de estados aplicados em uma Câmara Termoeletricamente Controlada (CTC). A CTC é composta por cinco sensores digitais de temperatura que representam os estados do sistema. A aplicação dos métodos é executada em duas etapas. Na primeira etapa, os filtros são implementados de forma off-line no software MATLAB R2018a, a partir dos dados reais do sistema. Enquanto, na segunda etapa, os filtros são aplicados em tempo real no sistema físico. São apresentados dois teoremas para a obtenção dos parâmetros dos fi
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