The Experts below are selected from a list of 237 Experts worldwide ranked by ideXlab platform

A. Michalski - One of the best experts on this subject based on the ideXlab platform.

  • Eliminating short ending effects in the Primary Transducer of electromagnetic flow meters
    IEEE Transactions on Magnetics, 2003
    Co-Authors: A. Michalski, J. Starzynski, S. Wincenciak
    Abstract:

    This paper describes a new method of Primary Transducer length optimization for electromagnetic flow meters. The method is based on eliminating a short ending effect that appears in the area where the magnetic field rapidly vanishes. The method uses numerical tools compatible with the cross section of the excitation coil design. It is based on a simple two-dimensional mathematical model of the Primary Transducer. The paper presents results of calculations for two water-to-ground conductivity ratios and for a rectangular flow channel.

  • Applying a metric space to design a Primary Transducer of electromagnetic flow meter for open channels
    IEEE Transactions on Instrumentation and Measurement, 2002
    Co-Authors: A. Michalski, W. Piotrowski
    Abstract:

    This paper deals with a problem of selecting an appropriate liquid level as a parameter in designing the exciting coil of the electromagnetic (EM) flow meter. The influence of variable liquid level on the transfer function of the EM flow meter is explained. The method of selecting the optimal liquid level utilizing the metric spaces is described. Some examples of metrics and the results of numerical calculations are presented. With this method, the transfer function of the EM flow meter can be significantly improved.

  • A new approach to estimating the main error of a Primary Transducer for an electromagnetic flowmeter
    IEEE Transactions on Instrumentation and Measurement, 2001
    Co-Authors: A. Michalski
    Abstract:

    The existing methods for estimating the error caused by various flow parameters for electromagnetic flowmeters are based on nonhomogeneity in the distribution of a weight vector. The author presents a new numerical flow generator, called the moving stream method, that allows for an estimate of the Primary error for a flowmeter during the design stage much more precisely than classical methods. It considers the contribution to measurement error that various flow velocities make within a measurement zone. The simulated flows account for all hydrologic conditions existing in the field.

  • A novel approach to eliminating short ending effects in the Primary Transducer of electromagnetic flow meter
    Proceedings of the 17th IEEE Instrumentation and Measurement Technology Conference [Cat. No. 00CH37066], 2000
    Co-Authors: A. Michalski, J. Starzynski, S. Wincenciak
    Abstract:

    This paper describes a new method of Primary Transducer length optimization for electromagnetic flow meters. The method presented is based on eliminating a short ending effect which appears in the area where the magnetic field rapidly vanishes. The authors focused on the method which uses similar numerical tools as the shape design of the cross-section of the excitation coil. The method is based on a simple 2D mathematical model of the Primary Transducer. Some results of calculations for two water to ground conductivities ratio and for the rectangular flow channel are discussed.

  • Applying a metric space to design a Primary Transducer or electromagnetic flow meter for open channels
    Proceedings of the 17th IEEE Instrumentation and Measurement Technology Conference [Cat. No. 00CH37066], 2000
    Co-Authors: A. Michalski, W. Piotrowski
    Abstract:

    This paper deals with a problem of selecting an appropriate liquid level as a parameter in designing the exciting coil of electromagnetic (EM) flow meter. The influence of variable liquid level on transfer function of EM flow meter is explained. The method of selecting the optimal liquid level utilising the metric spaces is described. Some examples of metrics and the results of numerical calculations are presented. With this method, the transfer function of EM flow meter can be significantly improved.

Yuriy Zakharov - One of the best experts on this subject based on the ideXlab platform.

  • APSIPA - Acoustic-Domain Self-Interference Cancellation for Full-Duplex Underwater Acoustic Communication Systems
    2019 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), 2019
    Co-Authors: Yanyan Wang, Yingsong Li, Lu Shen, Yuriy Zakharov
    Abstract:

    In full-duplex (FD) underwater acoustic communication (FD-UWAC) systems, the self-interference (SI) will affect the communication performance. Till now, there is no solution for active cancellation of the wide-band SI in the acoustic domain. In this paper, we propose such a solution with two Transducers, a Primary Transducer and a secondary Transducer. The acoustic signal emitted by the secondary Transducer is generated to cancel the SI signal received at the hydrophone from the Primary Transducer. The performance of the proposed scheme is investigated by simulation. We use the Waymark UWA simulator that allows the virtual signal transmission in various acoustic environments. The simulation results demonstrate that the proposed scheme can provide an effective acoustic SI cancellation for FD-UWAC systems, in terms of the mean square error and bit error ratio.

  • Acoustic-Domain Self-Interference Cancellation for Full-Duplex Underwater Acoustic Communication Systems
    2019 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), 2019
    Co-Authors: Yanyan Wang, Yingsong Li, Lu Shen, Yuriy Zakharov
    Abstract:

    In full-duplex (FD) underwater acoustic communication (FD-UWAC) systems, the self-interference (SI) will affect the communication performance. Till now, there is no solution for active cancellation of the wide-band SI in the acoustic domain. In this paper, we propose such a solution with two Transducers, a Primary Transducer and a secondary Transducer. The acoustic signal emitted by the secondary Transducer is generated to cancel the SI signal received at the hydrophone from the Primary Transducer. The performance of the proposed scheme is investigated by simulation. We use the Waymark UWA simulator that allows the virtual signal transmission in various acoustic environments. The simulation results demonstrate that the proposed scheme can provide an effective acoustic SI cancellation for FD-UWAC systems, in terms of the mean square error and bit error ratio.

S. Wincenciak - One of the best experts on this subject based on the ideXlab platform.

  • Eliminating short ending effects in the Primary Transducer of electromagnetic flow meters
    IEEE Transactions on Magnetics, 2003
    Co-Authors: A. Michalski, J. Starzynski, S. Wincenciak
    Abstract:

    This paper describes a new method of Primary Transducer length optimization for electromagnetic flow meters. The method is based on eliminating a short ending effect that appears in the area where the magnetic field rapidly vanishes. The method uses numerical tools compatible with the cross section of the excitation coil design. It is based on a simple two-dimensional mathematical model of the Primary Transducer. The paper presents results of calculations for two water-to-ground conductivity ratios and for a rectangular flow channel.

  • A novel approach to eliminating short ending effects in the Primary Transducer of electromagnetic flow meter
    Proceedings of the 17th IEEE Instrumentation and Measurement Technology Conference [Cat. No. 00CH37066], 2000
    Co-Authors: A. Michalski, J. Starzynski, S. Wincenciak
    Abstract:

    This paper describes a new method of Primary Transducer length optimization for electromagnetic flow meters. The method presented is based on eliminating a short ending effect which appears in the area where the magnetic field rapidly vanishes. The authors focused on the method which uses similar numerical tools as the shape design of the cross-section of the excitation coil. The method is based on a simple 2D mathematical model of the Primary Transducer. Some results of calculations for two water to ground conductivities ratio and for the rectangular flow channel are discussed.

  • Method of optimization of Primary Transducer for electromagnetic flow meter
    Quality Measurement: The Indispensable Bridge between Theory and Reality (No Measurements? No Science! Joint Conference - 1996: IEEE Instrumentation a, 1996
    Co-Authors: A. Michalski, S. Wincenciak
    Abstract:

    This paper presents a modified methodology of the Primary Transducer design for an electromagnetic flow meter. The class of flows considered is restricted to open artificial channels or pipes with rectangular cross section. The project focuses primarily on the shape of the cross section of the exciting coil, to obtain the homogeneity of the vector product (B/spl times/W'). The algorithm for optimization is based on numerical model of flow channel using finite element method. The theoretical consideration refers to the results of the numerical simulation of different channel shapes and sizes.

A Sans - One of the best experts on this subject based on the ideXlab platform.

  • electrophysiological properties of the utricular Primary Transducer are modified during development under hypergravity
    European Journal of Neuroscience, 2003
    Co-Authors: Christian Chabbert, Aurore Brugeaud, Georges Lennan, Jacques Lehouelleur, A Sans
    Abstract:

    : The electrophysiological development of hair cells between birth and the eight postnatal day (P8) was studied in the utricular macula of rats gestated in nest boxes mounted upon a centrifuge, subjecting the animals to a gravitational force of 2G. Whole-cell voltage-clamp recordings were made on cells in the acutely isolated epithelium. Cells were accessed through a tear in the epithelium, no enzymatic dissociation procedures were employed. Under artificially enhanced gravity, the whole cell conductance was dramatically altered in the two types of hair cells. Significant increases occurred from P3-4 in the type I cells while in the type II cells, the effect was delayed until P7-8. Fourfold and threefold increases of the mean slope conductance were observed at P7-8 in the type I and type II hair cells, respectively. These results indicate that the electrophysiological properties of a Primary Transducer such as utricle may be modified by variation of the Primary stimulus during development.

Yanyan Wang - One of the best experts on this subject based on the ideXlab platform.

  • APSIPA - Acoustic-Domain Self-Interference Cancellation for Full-Duplex Underwater Acoustic Communication Systems
    2019 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), 2019
    Co-Authors: Yanyan Wang, Yingsong Li, Lu Shen, Yuriy Zakharov
    Abstract:

    In full-duplex (FD) underwater acoustic communication (FD-UWAC) systems, the self-interference (SI) will affect the communication performance. Till now, there is no solution for active cancellation of the wide-band SI in the acoustic domain. In this paper, we propose such a solution with two Transducers, a Primary Transducer and a secondary Transducer. The acoustic signal emitted by the secondary Transducer is generated to cancel the SI signal received at the hydrophone from the Primary Transducer. The performance of the proposed scheme is investigated by simulation. We use the Waymark UWA simulator that allows the virtual signal transmission in various acoustic environments. The simulation results demonstrate that the proposed scheme can provide an effective acoustic SI cancellation for FD-UWAC systems, in terms of the mean square error and bit error ratio.

  • Acoustic-Domain Self-Interference Cancellation for Full-Duplex Underwater Acoustic Communication Systems
    2019 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), 2019
    Co-Authors: Yanyan Wang, Yingsong Li, Lu Shen, Yuriy Zakharov
    Abstract:

    In full-duplex (FD) underwater acoustic communication (FD-UWAC) systems, the self-interference (SI) will affect the communication performance. Till now, there is no solution for active cancellation of the wide-band SI in the acoustic domain. In this paper, we propose such a solution with two Transducers, a Primary Transducer and a secondary Transducer. The acoustic signal emitted by the secondary Transducer is generated to cancel the SI signal received at the hydrophone from the Primary Transducer. The performance of the proposed scheme is investigated by simulation. We use the Waymark UWA simulator that allows the virtual signal transmission in various acoustic environments. The simulation results demonstrate that the proposed scheme can provide an effective acoustic SI cancellation for FD-UWAC systems, in terms of the mean square error and bit error ratio.