Massimo Caruso, Antonino Oscar Di Tommaso, Rosario Miceli, Claudio Nevoloso, Ciro Spataro, Fabio Viola
The paper provides the results of a detailed experimental study on the variations of the characteristics of an interior permanent magnet synchronous motor, when load, speed and/or magnetization conditions vary. In particular, the characterization is carried out by assessing, for several working conditions, the motor parameters that influence its efficiency. From the knowledge of the variability of these parameters, it is possible to develop a dynamic model of the motor, which accurately describes its behaviour and allows estimating the power losses for whatever speed and load. In order to...
TC4 Symposium 2016
· TC4
· 2016
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Alexandru Salceanu, Maria Magdalena Poenaru, Mirela-Adelaida Anghel, Marius Paulet
Since July 1, 2016 the Directive 2013/35 / EU on the protection of human health against the effects of non-ionizing electromagnetic radiation, acquires the force of law. As regards low frequency exposure assessment, it requires a clearly different treatment of electric and respectively magnetic fields, from all the important perspectives: sensors, measuring techniques, biological effects and methods of protection. In this paper we propose a methodology accessible (both for SME employers and for a regulatory and/or control authority at the beginning of its activity) for the characterization...
TC4 Symposium 2016
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· 2016
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Koen Tiels
A polynomial nonlinear state-space (PNLSS) model can capture many nonlinear dynamic behaviors and has been successfully applied in a large range of applications. The model structure can easily deal with multiple input multiple output (MIMO) systems. This paper presents PNLSS 1.0, a toolbox to simulate and estimate PNLSS models in Matlab.
TC4 Symposium 2016
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· 2016
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Paweł Mazurek, Jakub Wagner, Andrzej Miękina, Roman Z. Morawski, Tomasz Ciamulski
The importance of research on new technologies that could be employed in care services for elderly and disabled persons is highlighted. Advantages of radar sensors, when applied for noninvasive monitoring of such persons in their home environment, are indicated. Methods for estimation of the instantaneous velocity and the mean walking velocity (including automatic detection of time intervals when the person is in motion), on the basis of the measurement data from radar sensors and accelerometers, are described. A novel methodology for evaluation of the estimation uncertainty of the person’s...
TC4 Symposium 2016
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· 2016
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Jakub Wagner, Andrzej Miękina, Paweł Mazurek, Roman Z. Morawski, Frode Fadnes Jacobsen, Tobba Therkildsen Sudmann, Ingebjørg Træland Børsheim
This paper is devoted to two sensor technologies that may be employed in care services for elderly and disabled persons. The performance of monitoring systems, based on impulse-radar sensors and on depth sensors, has been systematically compared in a series of experiments which involved the estimation of several healthcare-informative quantities on the basis of data from such sensors. The results of the experiments have shown that, although the estimates based on the radar data are less accurate than those based on the depth data, both types of sensors provide information useful for the...
TC4 Symposium 2016
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· 2016
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Juraj Alojzije Bosnic, Goran Petrovic, Roman Malaric
The aim of the paper is to estimate thermal properties (thermal conductivity and thermal diffusivity) of the concrete wall with unknown insulation. Short theoretical background of diffusive heat transfer and numerical solution of unsteady onedimensional heat conduction equation is presented first. System of discretized equations is solved using MATLAB. Boundary conditions (i.e. temperatures on edges of the wall) required for solving parabolic partial differential equation are obtained from experimental measurements on the wall. One heat flux sensor and one temperature sensor is mounted on...
TC4 Symposium 2016
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· 2016
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Cristian Zet, Cristian Foşalău
The paper presents a new type of current transducer intended to measurement currents in the range of kA. Its operation principle is based on the Giant Magnetoresistance (GMR) effect occurring in multiplayer nanowires embedded in a polymer foil, providing both frequency and voltage outputs. The sensitive element works as a variable resistor mounted in a Colpitts oscillator with the oscillation frequency in the range of MHz. A negative feedback helps improving the current range and linearity
TC4 Symposium 2016
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· 2016
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Marco Crescentini, Pier Andrea Traverso, Paolo Alberti, Aldo Romani, Marco Marchesi, Domenico Cristaudo, Roberto Canegallo, Marco Tartagni
Modern power applications are demanding for broadband current sensors. Hall sensors are a good solution from a general standpoint, but practical implementations are limited to a few hundred kHz. In fact, many parasitic dynamic effects perturb the time response of the Hall sensor, making difficult to experimentally assess the fundamental frequency limit and achieve it in the applications. This paper presents an equivalent electrical model that helps to design a test aimed at experimentally estimating the intrinsic time response of the sensor. According this test, the paper demonstrates that...
TC4 Symposium 2016
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· 2016
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A. Lay-Ekuakille, M. G. De Giorgi, A. Ficarella, S. Urooj, V. Bhateja
The quality of combustion process has an impact on combustion itself and mainly on emissions. This latter is one of the major concerns in an environmental viewpoint; for instance, the amount of oxygen is an indicator of bad and good combustion. It is also a constraint for regulating pollutant production, in particular dust that is also a vector transporting harmful micropollutants. The paper illustrates combustion quality detection by means of imaging. The work aims at retrieving possible precursors of combustion deterioration, and instability and allowing decision makers to provide...
Measurement for the endorsement of the subsoil and historical evidences
· TC19
· 2016
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G. Buttafuoco, T. Caloiero, I. Guagliardi, N. Ricca
Drought is one of the most common natural events having a great negative impact on agriculture being associated with a deficit of water resources over large geographical areas. Drought severity is conventionally assessed by various drought indices, which depend on different types of data. Among them, the Reconnaissance Drought Index (RDI) exhibits significant advantages over the other indices in the calculation of the drought severity by using, simultaneously, the precipitation and the potential evapotranspiration cumulated on a reference time scale processing monthly, seasonal or annual...
Measurement for the endorsement of the subsoil and historical evidences
· TC19
· 2016
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