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Acceleration of the measurement time of thermopiles using sigma-delta control
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-07-18)
Article
Open AccessThis work presents a double sliding mode control designed for accelerating the measurement of heat fluxes using thermopiles. The slow transient response generated in the thermopile, when it is placed in contact with the ... -
Voltage divider for self-limited analog state programing of memristors
(2019-06-19)
Article
Open AccessResistive switching devices - memristors - present a tunable, incremental switching behavior. Tuning their state accurately, repeatedly and in a wide range, makes memristors well-suited for multi-level (ML) resistive memory ... -
A mixed-signal control system for Lorentz-force resonant MEMS magnetometers
(2019-09-01)
Article
Open AccessThis paper presents a mixed-signal closed-loop control system for Lorentz force resonant MEMS magnetometers. The control system contributes to 1) the automatic phase control of the loop, that allows start-up and keeps ... -
Load shedding scheme with under-frequency and undervoltage corrective actions to supply high priority loads in islanded microgrids
(2019-08-19)
Article
Open AccessIn the last few years, microgrids have become a potential solution to improve reliability and security in the supply of electricity to power systems. When a microgrid changes its operation mode from grid-connected to ... -
State of charge dependency of the overvoltage generated in commercial Li-ion cells
(2019-04-01)
Article
Restricted access - publisher's policyThe overvoltage that is produced in the cells under operation limits the capacity and power they can deliver. A detailed study about the mechanisms that contribute to that overvoltage—and thus to their lifetime—is required ... -
Seat occupancy detection based on a low-power microcontroller and a single FSR
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-02-08)
Article
Open AccessThis paper proposes a microcontroller-based measurement system to detect and confirm the presence of a subject in a chair. The system relies on a single Force Sensing Resistor (FSR), which is arranged in the seat of the ... -
Temperature stability in the sub-milliHertz band with LISA Pathfinder
(Oxford University Press, 2019-07-01)
Article
Open AccessLISA Pathfinder (LPF) was a technology pioneering mission designed to test key technologies required for gravitational wave detection in space. In the low frequency regime (milliHertz and below), where space-based gravitational ... -
Embroidered electrodes for bioelectrical impedance analysis: impact of surface area and stitch parameters
(2019-07-15)
Article
Restricted access - publisher's policyA non-intrusive particle sizing method with a high spatial distribution is used to estimate cloud droplet spectra during flight test campaigns. The interferometric laser imaging for droplet sizing (ILIDS) method derives ... -
LISA pathfinder micronewton cold gas thrusters: in-flight characterization
(American Physical Society (APS), 2019-06-28)
Article
Open AccessThe LISA Pathfinder (LPF) mission has demonstrated the ability to limit and measure the fluctuations in acceleration between two free falling test masses down to sub-femto-g levels. One of the key elements to achieve such ... -
Multiple-fault detection and identification scheme based on hierarchical self-organizing maps applied to an electric machine
(2019-08-01)
Article
Restricted access - publisher's policyStrategies of condition monitoring applied to electric motors play an important role in the competitiveness of multiple industrial sectors. However, the risk of faults coexistence in an electric motor and the overlapping ... -
Data analytics for performance evaluation under uncertainties applied to an industrial refrigeration plant
(Institute of Electrical and Electronics Engineers (IEEE), 2019-01-01)
Article
Open AccessArtificial intelligence has bounced into industrial applications contributing several advantages to the field and have led to the possibility to open new ways to solve many actual problems. In this paper, a data-driven ... -
Fuzzy logic controller parameter optimization using metaheuristic Cuckoo search algorithm for a magnetic levitation system
(Multidisciplinary Digital Publishing Institute, 2019-06-16)
Article
Open AccessThe main benefits of fuzzy logic control (FLC) allow a qualitative knowledge of the desired system’s behavior to be included as IF-THEN linguistic rules for the control of dynamical systems where either an analytic model ...
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