Search results for "Array"

showing 10 items of 1264 documents

Technical and economical evaluation on the use of reconfiguration systems in some EU countries for PV plants

2017

This paper shows the technical and economical evaluation of the application of a reconfiguration system for photovoltaic (PV) plants, considering the incentives system in some European Union countries. The reconfiguration system is an alternative to the distributed maximum power point tracking technique which used to increase the power production in the PV plants under the mismatch phenomenon. The reconfiguration techniques employ a microprocessor-based or field-programmable gate array-based system that modifies the layout of the PV plant through the change of the connections among modules. After having presented the main features working of the PV reconfiguration system allowing the improv…

EngineeringPartial shading (PS)020209 energy02 engineering and technologySettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciIndustrial and Manufacturing EngineeringMaximum power point trackingGate arrayIncentives policie0202 electrical engineering electronic engineering information engineeringProduction (economics)media_common.cataloged_instancePV system topologyElectrical and Electronic EngineeringEuropean unionPhotovoltaic (PV) power systemmedia_commonMismatch lossebusiness.industryMismatch conditionPhotovoltaic systemControl reconfigurationControl engineeringInvestment (macroeconomics)Reliability engineeringSettore ING-IND/31 - ElettrotecnicaIncentiveControl and Systems EngineeringReconstructionbusinessSettore ING-INF/07 - Misure Elettriche E Elettroniche
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An FPGA-Based Software Defined Radio Platform for the 2.4GHz ISM Band

2006

A prototype of a Software Defined Radio (SDR) platform has been successfully designed and tested implementing a reconfigurable IEEE 802.11 and ZigBee receiver. The system exploits the reconfiguration capability of an FPGA for implementing a number of receiver configurations that share the same RF front-end. Configurations can be switched at run time, or can share the available logic and radio resource.

EngineeringRF front endRadio receiver designExploitbusiness.industrySoftware radioComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSFrequency shift keyingControl reconfigurationSoftware-defined radioRemote radio headEmbedded systemField-programmable gate arraybusinessISM bandreceived signal
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A simple and accurate model of photovoltaic modules for power system design

2014

EngineeringSIMPLE (military communications protocol)business.industryPhotovoltaic systemphotovoltaic arraysolar energyElectrical engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciPower system designMaximum power point trackingSolar micro-invertermodeling and simulationElectronic engineeringGrid-connected photovoltaic power systemrenewable energy sourcebusinessRooftop photovoltaic power station2014 Ninth International Conference on Ecological Vehicles and Renewable Energies (EVER)
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Obtaining dynamic Norton parameters of a solar panel from manufacturer data

2016

Photovoltaic arrays have been shown to possess significant influence on the dynamic performance of coupled source-converter-load system while its dynamic resistance is the most important parameter, contributing to the overall system dynamics. In this paper, a method of deriving the parameters of linearized photovoltaic equivalent circuit from manufacturer data is proposed. The approach allows predicting the range of dynamic Norton parameters for the expected irradiation and temperature operation conditions thus defining clear bounds required for robust design of the system controller.

EngineeringSettore ING-IND/11 - Fisica Tecnica Ambientalebusiness.industryPhotovoltaic systemPhotovoltaic arraysControl engineeringstabilitySystem dynamicsDynamic resistanceRobust designRange (statistics)Solar energy generatorEquivalent circuitbusinessdynamic resistanceSystem controller
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Electronic noses: a review of signal processing techniques

1999

The field of electronic noses, electronic instruments capable of mimicking the human olfactory system, has developed rapidly in the past ten years. There are now at least 25 research groups working in this area and more than ten companies have developed commercial instruments, which are mainly employed in the food and cosmetics industries. Most of the work published to date, and commercial applications, relate to the use of well established static pattern analysis techniques, such as principal components analysis, discriminant function analysis, cluster analysis and multilayer perceptron based neural networks. The authors first review static techniques that have been applied to the steady-s…

EngineeringSignal processingArtificial neural networkElectronic nosebusiness.industrySystem identificationcomputer.software_genreField (computer science)Sensor arrayMultilayer perceptronArtificial intelligenceData miningElectrical and Electronic EngineeringbusinesscomputerLinear filterIEE Proceedings - Circuits, Devices and Systems
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Heavy ion SEE test of 2 Gbit DDR3 SDRAM

2011

New generation 2 Gbit DDR3 SDRAMs from Micron, Samsung and Nanya have been tested under heavy ions. SEFIs significantly outweigh random SEU errors even at low LET; however, SEFIs can be mitigated by frequent re-initialization.

EngineeringSingle event upsetGigabitbusiness.industryElectronic engineeringOptoelectronicsHeavy ionbusinessField-programmable gate arrayDDR3 SDRAM2011 12th European Conference on Radiation and Its Effects on Components and Systems
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<title>Architecture for real-time wood inspection</title>

2000

This study has been realized to improve industrial machines that allow to analyze planks by detecting their width and too important defects thanks to a computer vision system. These machines are currently piloted by software with the help of PCs. The aim of our work is to realize a hardware card to increase the processing speed.

EngineeringSoftwarebusiness.industryEmbedded systemSystems architectureImage processingArchitecturebusinessField-programmable gate arrayEdge detectionSPIE Proceedings
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Recent advances on intelligent packaging as tools to reduce food waste

2018

[EN] Food waste is one of the main issues for international organisms. It is not only an ethical and economic issue but it also depletes the environment of limited natural resources. Among strategies suitable for fighting such challenge, intelligent packaging is an interesting tool to reduce waste derived from households and retailers. A revision of 45 recent advances in the area of optical systems for freshness monitoring is reported herein. The study covers fruits, vegetables, fish products and meat since they are the most representative fields of application. Furthermore, a discussion about the main research challenges and opportunities that will be faced by intelligent packaging in the …

EngineeringStrategy and ManagementActive packaging02 engineering and technology01 natural sciencesIndustrial and Manufacturing EngineeringOptoelectronic noseChromogenic arrayQUIMICA ORGANICAQUIMICA ANALITICAPROYECTOS DE INGENIERIAEnvironmental planningGeneral Environmental ScienceRenewable Energy Sustainability and the Environmentbusiness.industry010401 analytical chemistryQUIMICA INORGANICA021001 nanoscience & nanotechnologyIntelligent packagingNatural resource0104 chemical sciencesBiotechnologyFood packagingFood wasteEconomic issueFood freshness0210 nano-technologybusiness
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Task scheduling control of BGA solder joint process in flexible manufacturing system

2006

This paper describes an open loop control method of the solder joint process in a rework station for faulty printed circuit board (PCBs) containing electronic components in packages ball grid arrays (BGAs). In particular, a mathematical model describing the solder joint process is, first of all, obtained. Then, the desired thermal profile of the junctions BGA-PCB is determined according to the physical constraints of the rework station framework. The control parameters corresponding to the above desired thermal profile are identified using the above mathematical model. Finally, the open loop control algorithm is implemented on the supervisor interface of the rework station in order to carri…

EngineeringSupervisorbusiness.industryReworkFlexible manufacturing systemMechanical engineeringBall Grid Arrays (BGA)GridControl parameterOpen loop control algorithmsPrinted circuit boardSettore ING-INF/04 - AutomaticaEmbedded systemBall grid arrayvisual_artSolderingElectronic componentvisual_art.visual_art_mediumbusiness
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Compact instrumentation for radiation tolerance test of flash memories in space environment

2010

Aim of this work is the description of a test equipment, designed to be integrated on board of a microsatellite, able to investigate the radiation tolerance of non-volatile memory arrays in a real flight experiment. An FPGA-based design was adopted to preserve a high flexibility degree. Besides standard Program/Read/Erase functions, additional features such as failure data screening and latch-up protection have been implemented. The instrument development phase generated, as a by-product, a non-rad-hard version of the instrument that allowed performing in-situ experiments using 60Co and 10 MeV Boron irradiation facilities on Ground. Preliminary measurement results are reported to show the i…

EngineeringTolerance analysisbusiness.industrySystem testingSettore ING-INF/01 - ElettronicaFlash memorySpace equipmentNon-volatile memoryNon-volatile memoryFPGA-based instrumentationRadiation hardneInstrumentation (computer programming)businessField-programmable gate arrayRadiation hardeningInstrumentationComputer hardwareSpace environment
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