Acta IMEKO最新文献

{"title":"Acquisition and integration of differential pressure measurements on sails for boat performances improvement","authors":"Antonio Affanni, Luca Casarsa, Ivan Scagnetto, Francesco Trevisan","doi":"10.21014/actaimeko.v12i4.1555","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1555","url":null,"abstract":"In this paper, we integrated within a specifically developed acquisition system, denoted as Oceanus, the measurements from a differential pressure sensor between the two sides of a sail (windward and leeward sides); experiments have been performed using a light jib sail of a 35 feet cruising-racing yacht. We analyzed the correlation between such a signal and other standard signals usually present on board such as boat speed, intensity and direction of apparent or real wind; moreover, data from Inertial Measurement Units are handled. We also considered the Target Data, which depend on the actual point of sail, and the discrepancy between measured data and the predicted Targets is monitored as an error in terms of the true wind angle and boat velocity. In this way, the trimmer/helmsman can monitor the differential sail pressure together with Target data and decide to reduce the error with a correction in how sails are trimmed, rather than in how the boat is steered to achieve an improvement of boat performances. The resulting telemetry system represents an effective low cost solution, which is affordable even for amateur yachtsmen.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139246276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid parameter identification of three diode photovoltaic systems using the Cheetah optimizer","authors":"Mouncef El marghichi, Ihssan abdelkoddous El Jadli","doi":"10.21014/actaimeko.v12i4.1587","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1587","url":null,"abstract":"This study focuses on accurate parameter identification for solar cells and photovoltaic module simulation using experimental data. To tackle the challenge of modelling these highly nonlinear systems, we propose the novel use of the Cheetah Optimizer (CO) algorithm, inspired by cheetah hunting strategies. The CO algorithm employs mathematical models and randomization parameters to balance exploration and exploitation, avoiding local optima by considering energy limitations. We demonstrate the CO algorithm's effectiveness by applying it to the three-diode model in solar photovoltaic systems, specifically the STP6-120/36 and Photowatt-PWP201 PV modules. Impressively, the CO algorithm achieves remarkably low root mean square error values of 0.0145 A and 0.0019 A, outperforming state-of-the-art methods and ensuring high accuracy. Additionally, it delivers the lowest power errors of 0.16054 W and 0.01484 W for the respective modules, highlighting its exceptional performance. The CO algorithm proves to be a promising tool for precise parameter extraction and optimization, leading to improved modelling and performance of solar photovoltaic systems.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139243957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The use of a Heritage Building Information Model as an effective tool for planning restoration and diagnostic activities: the example of the Troia Cathedral rose window","authors":"Laura Morero, Francesca Visone, N. Abate, A. Amodio, Mariano Prodomo, M. Sileo, Nicola Masini","doi":"10.21014/actaimeko.v12i4.1511","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1511","url":null,"abstract":"The constructive reading of the historical architecture through the study of the published and unpublished sources preserved in the archives, can represent a unique and precious cognitive tool to acquire all fundamental information that constitutes the basis of an aware restoration intervention.Frequently, in case of ancient buildings, reconstruct the complete history of the building is not possible, as the sources are difficult to find, not published or kept in different territorial institutes that are not always easily accessible. The aim of this work is to set up an HBIM (Heritage Building Information Model) system to facilitate the planning of diagnostic and restoration activities by bringing all archive information into a unique digital reference platform, accompanied by three-dimensional models that can be consulted, examined and updated.The creation of the HBIM digital tool for consulting the architectural artefact and related information was only the last phase of this work, which began with: (i) Acquisition of archive sources in order to reconstruct the history of the restoration and renovation work on the monument; (ii) Acquisition of information about the diagnostic analyses and monitoring previously carried out on the monument; (iii) acquisition of data useful for the creation of a digital twin.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139253751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optically stimulated luminescence cross-dating from quartz of different grain size","authors":"R. Galvagno, A. D'anna, Agata Di Stefano, Francesca La Perna, Graziana Mendosa, G. Politi, G. Stella, A. Gueli","doi":"10.21014/actaimeko.v12i4.1523","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1523","url":null,"abstract":"Optically stimulated luminescence (OSL) signals from quartz can be used to determine when a sample was last exposed to sunlight. The total specific energy (dose) absorbed since the last resetting is measured using OSL, and divided by the rate of storage (dose rate) to give the time elapsed from the last heating or daylight exposure. The general equation used to determine the age in luminescence dating is given by the ratio between the Equivalent Dose (ED) and the Annual Dose rate (AD). The ED, measured using luminescence signals, is the total absorbed dose starting from the last \"zero event\" while the AD, evaluated by in situ and extra situ radioactivity measurements, represents the rate at which energy is absorbed from natural radioactivity present in the sample and in the environment. Evaluation of the environmental dose rate component becomes a crucial point in dating since particular conditions of the site (heterogeneity, lack of structure...) could make age measurement inaccurate. In this work, the conditions for applicability of subtraction dating are tested on a sediment of known age; it allows an age determination that is independent of knowledge of the environmental dose-rate.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139253318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of volume and centroid uncertainty of a cylindrical segment by two different methods","authors":"Ronan Alves da Paixão, André Melo Carvalhais Dutra, E. C. de Oliveira","doi":"10.21014/actaimeko.v12i4.1302","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i4.1302","url":null,"abstract":"Some solids are seldom studied analytically, unlike spheres, cylinders, and parallelepipeds. When researchers are interested in them, approximations by discretised meshes and numerical calculations are proposed. One of those is the cylindrical segment, which has applications in novel tilt-based industrial hydrometers. More specifically, the cylindrical segment has two means of being characterized: by measuring the radius, the middle height, and the cutting angle; and by measuring the radius and both the minimum height and the maximum height. In this study, one equation from the literature about the cylindrical segment is corrected, and the two measurement forms are compared, along with their impact on the uncertainty of the volume and barycenter of this solid. Particular results depend on specific input uncertainties, measurements, and objectives. Still, for most cases, it turned out that measuring the minimum and maximum heights generally provides lower uncertainty values for the evaluated calculations, especially the centroids.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139253183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Concept and preliminary design of dielectric resonator for anisotropic measurement of the surface impedance","authors":"Kostiantyn Torokhtii, Andrea Alimenti, Pablo Vidal García, Nicola Pompeo, Enrico Silva","doi":"10.21014/actaimeko.v12i3.1447","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i3.1447","url":null,"abstract":"The surface impedance of superconductors as a function of intense (∼ 10 T) static magnetic field at varying orientations with respect to the crystallographic axes is of large interest for both characterization purposes, in view of the material engineering, and from the point of view of devices to be used in fundamental physics experiments. A varying field orientation is customarily obtained with mechanically rotating magnets, whose complexity limits the attainable maximum fields to a few T. Here we propose a special proof of concept design for a measuring cell in which the magnetic field orientation is fixed, while the sample orientation can be changed through its incorporation in a rotating portion of the cell. The main design choices are thus proposed for the measuring cell: a cylindrical dielectric loaded resonator, to be used within the surface perturbation approach for the measurement of the surface impedance of flat samples with typical size 10×10mm2. The main focus in this preliminary work is put on the sensitivity attainable on the surface resistance, i.e. the real part of the surface impedance.The surface impedance of superconductors in function of intense (∼ 10 T) static magnetic field at varying orientations with respect to the crystallographic axes is of large interest for both characterization purposes, in view of the material engineering, and from the point of view of devices to be used in fundamental physics experiments. A varying field orientation is customarily obtained with mechanically rotating magnets, whose complexity limits the attainable maximum fields to a few T. Here we propose a special proof of concept design for a measuring cell in which the magnetic field orientation is fixed, while the sample orientation can be changed through its incorporation in a rotating portion of the cell. The main design choices are thus proposed for the measuring cell: a cylindrical dielectric loaded resonator, to be used within the surface perturbation approach for the measurement of the surface impedance of flat samples with typical size 10 × 10 mm2. The main focus in this preliminary work is put on the sensitivity attainable on the surface resistance, i.e. the real part of the surface impedance.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135193407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introductory notes for the Acta IMEKO third issue 2023 General Track","authors":"Francesco Lamonaca","doi":"10.21014/actaimeko.v12i3.1684","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i3.1684","url":null,"abstract":"","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135193568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introductory notes to selected papers from the 2022 IMEKO TC4 symposium","authors":"Jan Saliga, Jakub Svatos, Platon Sovilj","doi":"10.21014/actaimeko.v12i3.1637","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i3.1637","url":null,"abstract":"","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135193983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Editorial to selected papers from the 2022 IMEKO International Conference on ‘Metrology for Archaeology and Cultural Heritage’","authors":"Michela Ricca, Leonardo Iannucci, Yuval Goren","doi":"10.21014/actaimeko.v12i3.1685","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i3.1685","url":null,"abstract":"","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135193417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phasor measurement unit based based reliability index for renewable-based power systems","authors":"Guglielmo Frigo, Federica Costa, Federico Grasso-Toro","doi":"10.21014/actaimeko.v12i3.1446","DOIUrl":"https://doi.org/10.21014/actaimeko.v12i3.1446","url":null,"abstract":"The fast growing of renewable energy sources is threatening the correct functioning of power systems, both at the transmission and distribution levels where the presence of converter-interfaced generation (CIG) is rapidly increasing. Phasor Measurement Units (PMUs) are widely known devices that can enhance power systems observability; however, their in-field performances are still compromised for what concerns low-inertia and fast transient conditions produced by contingencies. This paper presents a new metric that is able to quantify the discrepancy between the acquired signal and the reconstruction based on the PMU estimates. More specifically, the correspondence between this metric and one of the PMU settings, namely the reporting rate, is examined. This study is carried out in four different scenarios all characterized by a strong presence of distributed CIG, installed at either distribution or transmission levels. The results indicate the significance of evaluating not only such quantity for correct control but also the importance of the choice of the PMU settings in order to maintain proper control.","PeriodicalId":37987,"journal":{"name":"Acta IMEKO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135585995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}