Results 21 to 30 of about 174,670 (291)

Modeling and Control Design Based on Petri Nets Tool for a Serial Three-Phase Five-Level Multicellular Inverter Used as a Shunt Active Power Filter

open access: yesEnergies, 2021
In this work, we represent a shunt active power filter (SAPF) based on a serial three-phase flying capacitor multilevel inverter (FCMI) controlled by a Petri Nets representation (PNs). This structure is chosen for its significant performances.
Sana Othman   +4 more
doaj   +1 more source

Friction factor from velocity profiles in smooth turbulent channel flows [PDF]

open access: yesE3S Web of Conferences, 2022
Fluid dynamics plays an important role in many Renewable energies studies, i.e. wind and tidal turbines, wave energy geothermal and solar power, …). Friction factor f is an important parameter for the determination of pressure drop in different processes
Payet-Taille Hélène   +2 more
doaj   +1 more source

Geometry-controlled phase transition in vibrated granular media

open access: yesScientific Reports, 2022
We report experiments on the dynamics of vibrated particles constrained in a two-dimensional vertical container, motivated by the following question: how to get the most out of a given external vibration to maximize internal disorder (e.g.
René Zuñiga   +2 more
doaj   +1 more source

Security Threats in Intelligent Transportation Systems and Their Risk Levels

open access: yesRisks, 2022
Intelligent Transport Systems (ITSs) are part of road transportation sector evolution and constitute one of the main steps towards vehicle automation.
Besma Zeddini   +2 more
doaj   +1 more source

Optimized Fractional Order Based Droop Control with Improving the Flexibility of a Microgrid [PDF]

open access: yesE3S Web of Conferences, 2022
This work presents an improved four-levels hierarchical control strategy for flexible microgrid based on three-phase voltage source inverters (VSIs) connected in parallel.
Hadjaidji Fatma-Zohra   +2 more
doaj   +1 more source

Integrated Design Methodology of Automated Guided Vehicles Based on Swarm Robotics

open access: yesApplied Sciences, 2021
In recent years, collaborative robots have become one of the main drivers of Industry 4.0. Compared to industrial robots, automated guided vehicles (AGVs) are more productive, flexible, versatile, and safer.
Khalil Aloui   +4 more
doaj   +1 more source

QHAR: Q-Holonic-Based ARchitecture for Self-Configuration of Cyber–Physical Production Systems

open access: yesApplied Sciences, 2021
Production systems must be able to adapt to increasingly frequent internal and external changes. Cyber-Physical Production Systems (CPPS), thanks to their potential capacity for self-reconfiguration, can cope with this need for adaptation.
Douha Macherki   +5 more
doaj   +1 more source

A New Compact Triple-Band Triangular Patch Antenna for RF Energy Harvesting Applications in IoT Devices

open access: yesSensors, 2022
This work proposes a new compact triple-band triangular patch antenna for RF energy harvesting applications in IoT devices. It is realized on Teflon glass substrate with a thickness of 0.67 mm and a relative permittivity of 2.1.
Chemseddine Benkalfate   +3 more
doaj   +1 more source

A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding

open access: yesSensors, 2022
In this paper, a new RF Energy Harvesting (RF-EH) system for Wireless Sensor Network (WSN) feeding is proposed. It is based on two different monitored architectures using switch circuits controlled by the input powers. One architecture is more adapted to
Chemseddine Benkalfate   +3 more
doaj   +1 more source

Category Theory Framework for System Engineering and Safety Assessment Model Synchronization Methodologies

open access: yesApplied Sciences, 2022
In recent decades, there has been a significant increase in systems’ complexity, leading to a rise in the need for more and more models. Models created with different intents are written using different formalisms and give diverse system representations.
Julien Vidalie   +3 more
doaj   +1 more source

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