Prohlížení dle předmětu "fluxgate"
Zobrazují se záznamy 1-20 z 30
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A 3-Phase Current Transducer based on microfluxgate sensors
(Elsevier, 2019)Novel 3-phase DC/AC current transducer for 3-phase current lines is based on 8 integrated fluxgate sensors. Using full information from each sensor rather than gradiometric pairs, we suppress crosstalk between individual ... -
AC/DC Current Transformer With Single Winding
(IEEE, 2014)AC/DC Current Transformer With Single Winding is a device which allows simultaneously measure AC and DC current using fluxgate effect -
A Busbar Current Sensor With Frequency Compensation
(IEEE, 2017)DC/AC yokeless galvanically insulated electric current sensors are required for applications, e.g., in automotive and aerospace engineering, where size, weight, and/or price are strictly limited. A busbar current sensor ... -
Contribution to the Ring-Core Fluxgate Theory
(The Royal Swedisch Academy of Sciences, 1989)Existing theories for open-core fluxgate are not fitting experimental results in the case of ring-core sensors. Simple description based on transfer functions which takes into account the interaction between two half-cores ... -
Current Sensor in PCB Technology
(IEEE, 2005-06)A novel DC/AC current sensor works on the fluxgate principle. The core in the form of a 7/10-mm ring made of electrodeposited permalloy is sandwiched in the middle of a printed circuit board (PCB), whereas the sensor ... -
D. Hrakova, P. Ripka, A. Laposa, D. Novotny, J. Kroutil, V. Povolný, O. Kaman, P. Veverka
(Elsevier, 2022)Non-planar fluxgate sensors measuring the magnetic fields in the uT range are required for electric current, position, and torque transducers. We report the first sensor based on an inkjet-printed 17 mm diameter ring core. ... -
Double Coil-Less Fluxgate in Bridge Configuration
(IEEE, 2010-02)In this paper, a new method for excitation of coil-less fluxgate is presented. The purpose of this method is to reduce the spurious component of the output voltage, allowing us to increase the amplification. The method is ... -
Effect of Electroplated Ni1-xFex Composition on the Field-Induced Anisotropy
(IEEE, 2016)Field-induced anisotropy has been proposed as an effective method to produce ferromagnetic rings with radial anisotropy for fluxgate cores. Compared with stress-induced anisotropy, this method easily allows generating a ... -
Effect of Stress Induced Anisotropy on the Noise of Ring-core Fluxgate
(IEEE, 2015)In this paper we show how an anisotropy perpendicular to the direction of excitation is favourable to obtain low noise in fluxgate sensors. We produced ring cores by electroplating NiFe thin film (6 μm) over a bended copper ... -
Effects of Core Dimensions and Manufacturing Procedure on Fluxgate Noise
(Polish Academy of Sciences, 2014)The effect of demagnetizing factor and manufacturing procedure on noise of the fluxgate probes, manufactured from metallic glasses, is presented. The fluxgate probes were either tape-wound, or flat, wet-etched ringcore ... -
Enhancing Performance of Fluxgate Sensors Using Annealed Nanocrystalline Core
(IEEE, 2023)The magnetic core is one of the most important parts of a fluxgate sensor. This article presents a study of fluxgate sensors with a core based on nanocrystalline Fe73.5Cu1Nb3Si13.5B9 wire and compares their performance to ... -
Field Annealed Closed-path Fluxgate Sensors Made of Metallic-glass Ribbons
(Elsevier Science, 2012)One-step field annealing of Co-based metallic glass was chosen to acquire low-magnetostrictive material with anisotropy required to reduce noise by favoring magnetization rotation. Despite the risk of bending stress ... -
Flugate Sensor With Pulse Feedback
(IEEE, 2016)Fluxgate sensors have typically only 100 μT range, which sometimes limits their applications. The main obstacle for increasing the measurement range is the power dissipated in their feedback coil. Until now, the feedback ... -
A Fluxgate Current Sensor With an Amphitheater Busbar
(IEEE, 2016)Large dc and ac electric currents are often measured by open-loop sensors without a magnetic yoke. A widely used configuration uses a differential magnetic sensor inserted into a hole in a flat busbar. The use of a ... -
Fluxgate magnetometr pro misi LVICE2
; Vedoucí práce: Petrucha Vojtěch; Oponent práce: Vopálenský Michal
(České vysoké učení technické v Praze. Vypočetní a informační centrum.Czech Technical University in Prague. Computing and Information Centre., 2023-02-01)Záměrem této práce byl návrh a realizace tříosého fluxgate magnetometru, který je určen pro vesmírnou výzkumnou misi LVICE$^{2}$. Práce obsahuje porovnání specifikací vybraných komerčně dostupných magnetometrů. Je zde ... -
Fluxgate Offset Study
(IEEE, 2014)Offset and its long-term stability is a weak point of fluxgate sensors. Even the ultrastable sensors kept at no vibrations and stable temperature at magnetic observatories show offset drift. Such drift of the fluxgate ... -
Fluxgate senzor s tištěným jádrem
; Vedoucí práce: Ripka Pavel; Oponent práce: Malátek Michal
(České vysoké učení technické v Praze. Vypočetní a informační centrum.Czech Technical University in Prague. Computing and Information Centre., 2024-01-31)S velkým pokrokem výroby materiálů se hledají i nové způsoby jejich využití. Fluxgate senzory se těší popularitě díky své citlivosti a odolnosti, jejich nevýhodou je však náročná a nákladná výroba. Tato práce si klade za ... -
Influence of Magnetostriction of NiFe Electroplated Film on the Noise of Fluxgate
(IEEE, 2014)We electroplated NiFe thin-film over a copper layer using different current density. Magnetostriction is changed from negative to positive values, with minimum magnetostriction found at around Fe19Ni81 composition. When ... -
Linearity of Pulse Excited Coil-Less Fluxgate
(IEEE, 2009-10)In this paper, we study the open-loop linearity of pulse excited coil-less fluxgate. Narrow current pulses can be used instead of classical sinewave for the excitation of the coil-less fluxgate. This method has shown several ...