Prohlížení Publikační činnost ČVUT dle předmětu "fluxgate"
Zobrazují se záznamy 1-20 z 24
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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 ... -
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. ... -
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 ... -
The Effect of Sensor Size on Axial Gradiometer Performance
(IEEE, 2015)The case of a finite base gradiometer with ideal sensors is considered, then influence of finite-size sensing elements is modeled and finally, comparison with experimental results obtained with two ring-core fluxgates and ... -
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 ... -
Flat Magnetic X-Y Alignment sensor
(Institute of Electrical and Electronics Engineers, Inc., 2024)We propose a novel flat 2-D inductive position sensor based on stationary coils and moving armature. The geometry was optimized by FEM simulations, the predicted parameters of the final design fit well to the measured ... -
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 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 ... -
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 ... -
Magnetostriction Offset of Fluxgate Sensors
(IEEE, 2015)Magnetostriction Offset of Fluxgate Sensors: we examined the origoins of offset both theoretically an experimentally -
Multiwire Core Fluxgate
(Elsevier Science, 2009)Multiwire core fluxgate has higher sensitivity due to the higher cross=sectional area of the core -
Multiwire Parallel Fluxgate Sensors
(IEEE, 2022)Fluxgate sensors with straight wire or rod cores are used in NDT, portable gradiometers and sensor arrays and for the detection of small objects. We show that their sensitivity at the voltage output mode depends on the ... -
Offset drift in orthogonal fluxgate and importance of closed-loop operation
(Elsevier, 2022)In this paper we show an up-to-now unexplained source of offset drift affecting the fundamental mode orthogonal fluxgate. After a sudden change or removal of the magnetic field, we observe an offset transient which lasts ...