Prohlížení Publikační činnost ČVUT dle autora "Vyhnánek J."
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AMR Gradiometer for Mine Detection
Autor: Vyhnánek J.; Janošek M.; Ripka P.
(Elsevier Science, 2012)Anisotropic magnetoresistors (AMRs) are used to build an advanced mine detector. The sensing head involves a gradiometric pair of AMR sensors and a continuous-wave driven excitation coil, so the gradiometer is capable of ... -
AMR Proximity Sensor With Inherent Demodulation
Autor: Ripka P.; Vyhnánek J.; Janošek M.; Včelák J.
(IEEE Sensors Council, 2014)Our novel position sensor is based on the combination of the eddy-current and permeability effects. The primary field is excited by a coil, but instead of induction coil, the sensing part uses anisotropic magnetoresistor ... -
Crossfield response of industrial magnetic sensors
Autor: Ripka P.; Vyhnánek J.; Chirtsov A.
(IOS Press, 2017)Magnetic sensors used for non-destructive testing, metal detection and other applications are subjected to large perpendicular field. In this paper we show that the existing models describing the response of anisotropic ... -
Design and modeling of a linear speed sensor with a flat type structure and air coils
Autor: Mirzaei M.; Ripka P.; Chirtsov A.; Vyhnánek J.; Grim V.
(Elsevier, 2020)This paper presents the design and modeling of a linear eddy current speed sensor with a flat type structure and an air coil configuration. The theory of the eddy current speed sensor is based on utilizing the speed component ... -
Design of a flat-type magnetic position sensor using a finite-difference method
Autor: Mirzaei M.; Macháč J.; Ripka P.; Chirtsov A.; Vyhnánek J.; Grim V.
(The Institution of Engineering and Technology (IET), 2020)This study presents an analysis and the design of a new flat-type position sensor with an external armature. One excitation coil and two antiserially connected pickup coils are used in the stationary part. Solid iron ... -
Eddy Current Linear Speed Sensor
Autor: Mirzaei M.; Ripka P.; Chirtsov A.; Vyhnánek J.
(IEEE, 2019)Novel eddy current speed sensor with axisymmetric coils and solid iron rod as moving part is presented. The analysis is performed for both dc and ac coil currents and for variable iron rod translational speed. The coil ... -
Effects of Core Dimensions and Manufacturing Procedure on Fluxgate Noise
Autor: Janošek M.; Vyhnánek J.; Zikmund A.; Butvin P.; Butvinová B.
(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 ... -
Experimental Comparison of the Low-Frequency Noise of Small-Size Magnetic Sensors
Autor: Vyhnánek J.; Ripka P.
(IEEE, 2017)Small-size ac magnetic-field sensors are used for nondestructive testing (NDT), magnetic particle detection, and other applications, which require high spatial resolution. Up to now, inductive coils dominated this area, ... -
Modeling of hysteresis loops using rational and power functions
Autor: Mirzaei M.; Ripka P.; Vyhnánek J.; Chirtsov A.; Grim V.
(Elsevier, 2021)Simple and precise hysteresis models with a small number of parameters allowing fast calculation are required for the magnetic analysis, as the field is calculated in a very large number of points. This paper presents a ... -
Rectangular Array Current Transducer with Integrated microfluxgate Sensors
Autor: Chirtsov A.; Ripka P.; Vyhnánek J.
(IEEE SENSORS, 2018)Novel rectangular yokeless current transducer with the range 400 A using 16 microfluxgate sensors around the busbar conductor is presented in this paper. Compared to yokeless transducers utilizing the differential pair of ... -
Rotational Eddy Current Speed Sensor
Autor: Mirzaei M.; Ripka P.; Vyhnánek J.; Chirtsov A.; Grim V.
(IEEE, 2019)A novel eddy current speed sensor is developed to measure the rotational speed of conductive objects. The sensor consists of one excitation coil and two pick-up coils around a rotating cylinder or rod. The sensor does not ... -
Temperature Influence on Position Transducer for Pneumatic Cylinder
Autor: Mirzaei M.; Ripka P.; Chirtsov A.; Vyhnánek J.
(IEEE SENSORS, 2018)In this paper, temperature sensitivity of inductance position transducer of a pneumatic cylinder system is presented. The magnetic solid iron rod and aluminum piston position changes the inductance of the tubular coil ... -
Transformer position sensor for a pneumatic cylinder
Autor: Ripka P.; Mirzaei M.; Chirtsov A.; Vyhnánek J.
(Elsevier, 2019)A novel transformer-based sensor for a pneumatic cylinder enables measurements of the piston position to be made through a thick conductive cylinder. Unlike existing industrial solutions, which are mainly based on a moving ...