Results 11 to 20 of about 433,330 (264)

Fault Identification of Broken Rotor Bars in Induction Motors Using an Improved Cyclic Modulation Spectral Analysis

open access: yesEnergies, 2019
Induction motors (IMs) play an essential role in the field of various industrial applications. Long-time service and tough working situations make IMs become prone to a broken rotor bar (BRB) that is one of the major causes of IMs faults.
Zuolu Wang   +5 more
doaj   +1 more source

On Adaptive Energy-Efficient Transmission in WSNs [PDF]

open access: yesInternational Journal of Distributed Sensor Networks, 2013
One of the major challenges in design of wireless sensor networks (WSNs) is to reduce energy consumption of sensor nodes to prolong lifetime of finite capacity batteries. In this paper, we propose energy-efficient adaptive scheme for transmission (EAST) in WSNs. EAST is an IEEE 802.15.4 standard compliant.
Muhammad Tahir 0001   +4 more
openaire   +3 more sources

A Novel Fault Detection Method for Rolling Bearings Based on Non-Stationary Vibration Signature Analysis

open access: yesSensors, 2019
To realize the accurate fault detection of rolling element bearings, a novel fault detection method based on non-stationary vibration signal analysis using weighted average ensemble empirical mode decomposition (WAEEMD) and modulation signal bispectrum ...
Dong Zhen   +4 more
doaj   +1 more source

Modulation Sideband Separation Using the Teager–Kaiser Energy Operator for Rotor Fault Diagnostics of Induction Motors

open access: yesEnergies, 2019
Broken rotor bar (BRB) faults are one of the most common faults in induction motors (IM). One or more broken bars can reduce the performance and efficiency of the IM and hence waste the electrical power and decrease the reliability of the whole ...
Haiyang Li   +4 more
doaj   +1 more source

Hyperspectral Data: Efficient and Secure Transmission [PDF]

open access: yesAlgorithms, 2017
Airborne and spaceborne hyperspectral sensors collect information which is derived from the electromagnetic spectrum of an observed area. Hyperspectral data are used in several studies and they are an important aid in different real-life applications (e.g., mining and geology applications, ecology, surveillance, etc.). A hyperspectral image has a three-
Pizzolante, Raffaele, Carpentieri, Bruno
openaire   +2 more sources

An Improved Cyclic Modulation Spectral Analysis Based on the CWT and Its Application on Broken Rotor Bar Fault Diagnosis for Induction Motors

open access: yesApplied Sciences, 2019
Induction motors (IMs) are widely used in many manufacturing processes and industrial applications. The harsh work environment, long-time enduring, and overloads mean that it is subjected to broken rotor bar (BRB) faults. The vibration signal of IMs with
Dong Zhen   +5 more
doaj   +1 more source

Energy-efficient and high-spectrum-efficiency wireless transmission

open access: yesICST Transactions on Mobile Communications and Applications, 2022
With the deployment and commercialization of the fifth-generation (5G) mobile communication networks, the access nodes and data volume of wireless networks are showing massive and explosive growth. In this paper, we firstly review the research progress on the energy-efficient and spectrum-efficient wireless transmission, from the perspectives of both ...
Yajuan Tang   +29 more
openaire   +2 more sources

Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault

open access: yesEnergies, 2019
This paper investigated the nonlinear vibrations of an uncertain overhung rotor system with rub-impact fault. As the clearance of the rotor and stator is getting smaller, contact between them often occurs at high rotation speeds.
Chao Fu   +4 more
doaj   +1 more source

Improvement and optimization of NMEA2000 based on an autonomous and controllable platform

open access: yesZhongguo Jianchuan Yanjiu, 2021
ObjectivesIn order to expand the application of NMEA2000 communication protocol standard and optimize and improve its transmission efficiency, an NMEA2000 data acquisition and transmission system based on an autonomous and controllable platform is ...
Weibo ZHONG   +3 more
doaj   +1 more source

Transmission Efficiency Limit for Nonlocal Metalenses

open access: yesLaser & Photonics Reviews, 2023
AbstractThe rapidly advancing capabilities in nanophotonic design are enabling complex functionalities limited mainly by physical bounds. The efficiency of transmission is a major consideration, but its ultimate limit remains unknown for most systems.
Shiyu Li, Chia Wei Hsu
openaire   +2 more sources

Home - About - Disclaimer - Privacy