Results 21 to 30 of about 11,947 (254)
Photonics, 2023 In order to address issues such as low demodulation accuracy, large demodulation errors, small dynamic range, and complex algorithms for the extrinsic Fabry–Perot interferometric (EFPI) sensor, a five-step phase-shift algorithm based on a multiwavelength
Zheng Liu +5 more
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The signal demodulation techniques [PDF]
, 2020 Condition monitoring of electrical machines is a broad scientific area, the ultimate purpose of which is to ensure the safe, reliable and continuous operation of electrical machines. Hence, the task of fault detection is still an art, because induction machines are widely used in variable speed drives and in renewable energy conversion systems.
Amirat, Yassine, Benbouzid, Mohamed
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A New Demodulation Method for Mechanical Fault Feature Extraction based on LOD and IEE
Measurement Science Review, 2021 The rolling bearing and gear fault features are generally shown as modulation characteristics of their vibration signals. The empirical envelope (EE) method is an accordingly common demodulation method. However, the EE method has the defects of over- and
Zhang Kang +5 more
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Compressive demodulation of mutually interfering signals [PDF]
2012 IEEE Statistical Signal Processing Workshop (SSP), 2012 The challenge of Multiuser Detection (MUD) is that of demodulating mutually interfering signals given that at any time instant the number of active users is typically small. The promise of compressed sensing is the demodulation of sparse superpositions of signature waveforms from very few measurements.
Yao Xie 0002 +3 more
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EXPERIMENTAL COMPARISON OF HOMODYNE DEMODULATION ALGORITHMS FOR PHASE FIBER-OPTIC SENSOR [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2015 Subject of Research. The paper presents the results of experimental comparative analysis of homodyne demodulation algorithms based on differential cross multiplying method and on arctangent method under the same conditions. The dependencies of parameters
M. N. Belikin +4 more
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Novel adaptation of the demodulation technology for gear damage detection to variable amplitudes of mesh harmonics [PDF]
, 2011 In this paper, a novel adaptive demodulation technique including a new diagnostic feature is proposed for gear diagnosis in conditions of variable amplitudes of the mesh harmonics.
L. Gelman +3 more
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An automated methodology for performing time synchronous averaging of a gearbox signal without speed sensor [PDF]
, 2007 In this paper we extend a sensorless algorithm proposed by Bonnardot et al. for angular resampling of the acceleration signal of a gearbox submitted to limited speed fluctuation.
Gelman, Leonid, Combet, Francois
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Amplitude and Phase Analysis of EEG Signal by Complex Demodulation [PDF]
, 2013 Analysis of amplitude and phase characteristics for delta, theta, and alpha bands at localized time instant from EEG signals is important for the characterizing information processing in the brain.
Sun K. Yoo, Hee Cheol Kang
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GNSS Signal Demodulation Performance in Urban Environments [PDF]
, 2013 International audienceSatellite navigation signals demodulation performance is historically tested and compared in the Additive White Gaussian Noise propagation channel model which well simulates open areas.
Julien, Olivier +7 more
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A Filtering Algorithm of MEMS Gyroscope to Resist Acoustic Interference
Sensors, 2020 To reduce the impact of acoustic interference in a microelectromechanical system (MEMS) gyroscope and to improve the reliability of output data, a filtering algorithm based on orthogonal demodulation is proposed.
Yufei Sun +4 more
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