Results 11 to 20 of about 2,911,926 (286)

Diagnosis of Combination Faults in a Planetary Gearbox using a Modulation Signal Bispectrum based Sideband Estimator [PDF]

open access: yes, 2015
This paper presents a novel method for diagnosing combination faults in planetary gearboxes. Vibration signals measured on the gearbox housing exhibit complicated characteristics because of multiple modulations of concurrent excitation sources, signal ...
Gu, Fengshou   +12 more
core   +4 more sources

Modulation techniques for data superposition on amplitude-modulated signals [PDF]

open access: yes, 1983
Double-sideband amplitude-modulation is widely used because of its simplicity in transmission and reception, but in a number of applications the inclusion of a data channel has become an additional requirement.
Al-Jalili, Yazan Othman Ahmad
core   +7 more sources

Inter-Turn Short Circuit Detection Based on Modulation Signal Bispectrum Analysis of Motor Current Signals [PDF]

open access: yes, 2013
Motor current signature analysis (MCSA) is a common practice in industry for finding motor faults. However, because of small modulations caused by faults and high noise contamination, it is difficult to quantify the modulation in measured signals which ...
Gu, Fengshou   +5 more
core   +3 more sources

Modulation Signal Bispectrum Analysis of Motor Current Signals for Stator Fault Diagnosis [PDF]

open access: yes, 2012
Induction motors are the most widely used electrical machines in industry. To diagnose any possible incipient faults, many techniques have been developed.
Gu, Fengshou   +9 more
core   +3 more sources

A robust fault detection method of rolling bearings using modulation signal bispectrum analysis [PDF]

open access: yes, 2015
Envelope analysis is a widely used method for bearing fault detection. To obtain high detection accuracy, it is critical to select an optimal narrowband for envelope demodulation.
Gu, Fengshou   +4 more
core   +4 more sources

A Novel Method for the Fault Diagnosis of a Planetary Gearbox based on Residual Sidebands from Modulation Signal Bispectrum Analysis [PDF]

open access: yes, 2014
This paper presents a novel method for the fault diagnosis of planetary gearboxes based on an accurate estimation of residual sidebands using a modulation signal bispectrum (MSB).
Gu, Fengshou   +4 more
core   +3 more sources

EQUIPMENT FOR FOOD PROCESSING LOW-FREQUENCY ELECTROMAGNETIC FIELD WITH MODULATED CHARACTERISTICS

open access: yesВестник Северо-Кавказского федерального университета, 2022
The article is devoted to the innovative scientific and practical direction in the food industry - the impact on raw materials and products of its processing by a modulated electromagnetic field of the low-frequency range.
Valentin Shipulin   +3 more
doaj  

Cannabinoids in the Modulation of Oxidative Signaling

open access: yesInternational Journal of Molecular Sciences, 2023
Cannabis sativa-derived compounds, such as delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD), and components of the endocannabinoids system, such as N-arachidonoylethanolamide (anandamide, AEA) and 2-arachidonoylglycerol (2-AG), are extensively studied to investigate their numerous biological effects, including powerful antioxidant effects ...
Cristina Pagano   +6 more
openaire   +2 more sources

Adaptive Delta Modulation Simulation and Analysis Using MatLab

open access: yesParadigma, 2023
The system for converting analog signals to digital signals has become a necessity, considering that the tools currently used are digital computers. One of the analog-to-digital conversion systems is the delta modulation system. In delta modulation, only
Djadjat Sudaradjat, Andi Rosano
doaj   +1 more source

Implementation of Pulse Radar Waveform Based on Software Radio Platform

open access: yesMATEC Web of Conferences, 2015
Based on the frequency and phase modulated signal, the authors design some commonly-used pulse radar baseband waveform, such as linear frequency modulated waveform, nonlinear frequency modulated waveform, Costas waveform, Barker coding waveform and multi-
Wang Dong, Dong Jian, Xiao Shunping
doaj   +1 more source

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