Recent Publications

2023

D. Hrakova, P. Ripka, T. Kmječ: Enhancing Performance of Fluxgate Sensors Using Annealed Nanocrystalline Core, IEEE Trans. Magn, early access, doi 10.1109/TMAG.2023.3296205

N. George, P. Ripka, and V. Grim: C-Shape Busbar with Frequency Invariant Points for Wideband Current Measurement,  in IEEE Trans. Ind. Electronics, early access doi 10.1109/TIE.2023.3299010

N. George. P. Ripka: Rectangular Busbar with Circular Sensing Part for Wideband Current Measurement, IEEE Trans. Instr. Meas. 72, 9509008.  doi 10.1109/TIM.2023.3289559

M. Mirzaei, P. Ripka. V. Grim: An Eddy Current Speed Sensor with a Novel Configuration of Longitudinal and Transversal Coils, Sensors and Actuators A 352 (2023), 114201, https://doi.org/10.1016/j.sna.2023.114201

M. Mirzaei, P. Ripka. V. Grim: A Novel Structure of an Eddy Current Sensor for Speed Measurement of Rotating Shafts,   IEEE Trans. Energy Conv.38 (2023), Iss. 1, pp.170-179,  https://doi.org/10.1109/TEC.2022.3195921

2022

M. Mirzaei, P. Ripka. V. Grim: A Position Sensor with Novel Configuration of Linear Variable Differential Transformer,IEEE Sensors Journal 21 (2021), 22899 – 22907, 10.1109/JSEN.2021.3105879

M. Mirzaei, P. Ripka: A Linear Eddy Current Speed Sensor with a Perpendicular Coils Configuration, IEEE Trans. Vehicular Technology 70 (2021), pp. 3197-3207, 10.1109/TVT.2021.3065924

P. Ripka, V. Grim, M. Mirzaei: The apparent permeability and the amplification factor of magnetic wires and wire arrays JMMM  527, 2021, 167726

D. Hrakova, P. Ripka, A. Laposa, D. Novotny, J. Kroutil, V. Povolný, O. Kaman, P. Veverka: Inkjet-printed Mn-Zn ferrite nanoparticle core for fluxgate,  JMMM Vol. 563, 1 December 2022, 170003    doi 10.1016/j.jmmm.2022.170003

D. Hrakova, P. Ripka, M. Butta: Sensitivity and noise of parallel fluxgate sensor with amorphous wire cores,  JMMM Vol.563, 1 Dec. 2022, 169981doi.org/10.1016/j.jmmm.2022.169981

P. Ripka, M. Mirzaei, P. Mlejnek: Effect of external DC field on current transformers with amorphous and nanocrystalline cores,  JMMM Volume 563, 1 December 2022, 170019  doi.org/10.1016/j.jmmm.2022.170019 

M. Mirzaei, P. Ripka. V. Grim: A Linear Eddy Current Speed Sensor for Speed Measurement of Conductive Objects, IEEE Trans. Ind. Appl. 58 (2022) Iss. 6, pp 7847-7856, DOI: 10.1109/TIA.2022.3198625

M. Mirzaei, P. Ripka. J. Machac, V. Grim, J. Svatos: Design and modeling of an axisymmetric eddy current sensor for speed measurement of nonmagnetic rods, Sens Act. A 344 (2022), 113728, https://doi.org/10.1016/j.sna.2022.113728

M. Mirzaei, P. Ripka. V. Grim: An Axial Airgap Eddy Current Speed Sensor, IEEE Transactions on Industrial Electronics 69 (2002), 9586-9595, DOI10.1109/TIE.2021.3113001

P. Ripka, D. Hrakova, M. Mirzaei, O. Kaman: Apparent permeability of ordered magnetically soft nanowire arrays, AIP Advances 12, 035128 (2022); https://doi.org/10.1063/9.0000316

V. Grim, P. Ripka: Rogowski Coil with Ferromagnetic Powder Core, Magnetics Letters 13 (2022), pp. 1-4, Art no. 8102304  10.1109/LMAG.2022.3143470

M. Mirzaei, P. Ripka, V. Grim, L. Jelinek and J Svatos: Thickness Evaluation of Hollow Nonmagnetic Cylinders Utilizing a Motional Eddy Current, Measurement Vol. 189 (2022), 110463,  https://doi.org/10.1016/j.measurement.2021.110463

P. Ripka , M. Mirzaei, J.Blazek: Magnetic position sensors, Measurement Science and Technology 33 (2022) Number 2, 022002, https://doi.org/10.1088/1361-6501/ac32eb

P. Ripka, D. Hrakova, V. Grim, M. Mirzaei: Multiwire Parallel Fluxgate Sensors, IEEE Trans Magn. 58 Iss. 2 (Feb. 2022), pp 1-5, 10.1109/TMAG.2021.3093017

M. Mirzaei, P. Ripka. V. Grim: A Simplified 2D Equivalent Model for Magnetic Wire Array, IEEE Trans Magn. 58 Iss. 2 (Feb. 2022), pp 1-5, 10.1109/TMAG.2021.3085485

2021

Ripka (ed.): Magnetic Sensors and Magnetometers, Artech, Boston, ISBN 1-58053-057-5,  2001, 2nd edition 2021.

M. Mirzaei, P. Ripka. V. Grim: An Axial Airgap Eddy Current Speed Sensor, IEEE Transactions on Industrial Electronics,  10.1109/TIE.2021.3113001

M. Mirzaei, P. Ripka. V. Grim: A Position Sensor with Novel Configuration of Linear Variable Differential Transformer, IEEE Sensors Journal,  10.1109/JSEN.2021.3105879

P. Ripka, D. Hrakova, V. Grim, M. Mirzaei: Multiwire Parallel Fluxgate Sensors, IEEE Trans Magn. 10.1109/TMAG.2021.3093017

M. Mirzaei, P. Ripka. V. Grim: A Simplified 2D Equivalent Model for Magnetic Wire Array, IEEE Trans Magn.  10.1109/TMAG.2021.3085485

M. Mirzaei, P. Ripka: A Linear Eddy Current Speed Sensor with a Perpendicular Coils Configuration, IEEE Trans. Vehicular Technology 70 (2021), pp. 3197-3207, 10.1109/TVT.2021.3065924

P. Ripka, V. Grim, M. Mirzaei: The apparent permeability and the amplification factor of magnetic wires and wire arrays JMMM  527, 2021, 167726

M. Mirzaei, P. Ripka, J. Vyhnanek, A. Chirtsov, and V. Grim, “Modeling of hysteresis loops using rational and power functions,” J. Magn. Mag. Mat. 522, 167563, 2021 10.1016/j.jmmm.2020.167563

P. Ripka, V. Grim, M.  Mirzaei, D. Hrakova, J. Uhrig, F. Emmerich, C. Thielemann, J. Hejtmanek, O. Kaman, and R. Tesar:  Modelling and measurement of magnetically soft nanowire arrays for sensor applications, Sensors 2021, 21(1), 3, https://doi.org/10.3390/s21010003

DRESSLER, M., M. JANOŠEK, and M. BUTTA. Reduction of magnetic noise limits of orthogonal fluxgate sensor. AIP Advances. 2021, 11(1), ISSN 2158-3226. DOI 10.1063/9.0000231.

D. Novotný, V. Petrucha, M. Dressler, A. Platil:. Characterization of a Digital AMR Magnetometer for Space Applications. IEEE Transactions on Instrumentation and Measurement. 2021, 70(1), ISSN 0018-9456. DOI 10.1109/TIM.2020.3043867.

 

2020

Butta, M.; Vazquez, M.; Del Real, R.; Calle, E., Dependence of the noise of an orthogonal fluxgate on the composition of its amorphous wire-core, AIP Advances. 2020, 2020(2), 025114-1, doi 10.1063/1.5130393

Janošek, M.; Butta, M.; Dressler, M.; Saunderson, E.; Novotný, D.; Fourie, C.: 1-pT noise fluxgate magnetometer for geomagnetic measurements and unshielded magnetocardiography, IEEE Trans. Instrum. Meas. 2020, 69(5), 2552-2560. doi 10.1109/TIM.2019.2949205

M. Mirzaei, P. Ripka, V. Grim, A. Chirtsov: A Novel Position Sensor With a Conical Iron Core, IEEE Trans. Instrum. and meas. Vol. 69 , Iss 11, Nov. 2020, pp. 9178 – 9189, doi:  10.1109/TIM.2020.2999691

M. Mirzaei, P. Ripka, V. Grim, A. Chirtsov: Design and Optimization of an Eddy Current Speed Sensor for Rotating Rods, IEEE Sensors Journal 20 (2020), pp. 12241-12251, doi:  10.1109/JSEN.2020.3000442

M. Mirzaei, P. Ripka, V. Grim: A Novel Eddy Current Speed Sensor with Ferrite E-Core, IEEE Magn. Lett. Vol. 11, Iss. 1 article # 8102905,pp.1-5 DOI: 10.1109/LMAG.2020.2993501

P. Ripka, M. Mirzaei, A. Chirtsov, V. Grim: Temperature stability of the Transformer Position Transducer for Pneumatic Cylinder, JMMM Vol. 503, 1 June 2020, 166636, doi.org/10.1016/j.jmmm.2020.166636

M. Mirzaei, P. Ripka, A. Chirtsov, and V. Grim:  Eddy Current Speed Sensor with Magnetic Shielding, JMMM 502, 15 May 2020, 166568 https://doi.org/10.1109/JSEN.2020.3000442

M. Mirzaei, J. Machac, P. Ripka, A. Chirtsov, J. Vyhnanek, and V. Grim: Design of a Flat Type Magnetic Position Sensor Using Finite Difference Method,  IET Science, Measurement & Technology, Vol. 14, Iss.5, pp. 514 – 524, doi 10.1049/iet-smt.2019.0197

V. Grim, P. Ripka, J. Bauer: DC current sensor using switching-mode excited in-situ current transformer, JMMM Vol. 500 (2020) 166360  doi.org/10.1016/j.jmmm.2019.166370

M. Mirzaei, J. Vyhnanek, A. Chirtsov, V. Grim,  P. Ripka: Design and Modeling of a Linear Speed Sensor with a Flat Type Structure and Air Coils, JMMM Vol. 495 (2020)  article #165834,pp 1-10, https://doi.org/10.1016/j.jmmm.2019.165834

P. Ripka , J.Blazek, M. Mirzaei, P. Lipovský, M. Šmelko, K.Draganova: Inductive position and speed sensors, Sensors 2020, 20(1), 65; https://doi.org/10.3390/s20010065

2019

A. Chirtsov, P. Ripka, V. Grim: Three-Phase Busbar Current Transducer, IEEE Magnetics Letters 10 (2019), Iss. 1 pp 1-5, article # 8110805  www.doi.org/10.1109/LMAG.2019.2957257

P. Ripka, P. Mlejnek, P. Hejda, A. Chirtsov, J. Vyhnanek:  Rectangular array current transducer with integrated fluxgate sensors, Sensors 201919(22), 4964

P. Ripka, V. Grim, A. Chirtsov: A 3-Phase Current Transducer based on microfluxgate sensors, Measurement Vol. 146, November 2019, pp. 133-138  https://doi.org/10.1016/j.measurement.2019.06.028

M. Mirzaei, P. Ripka, J. Vyhnanek, A.Chirtsov, V. Grim: Rotational Eddy Current Speed Sensor, IEEE Transactions on Magnetics vol. 55, no. 9, pp. 1-10, Sept. 2019, Art no. 4003710, 10.1109/TMAG.2019.2918163

P. Ripka: Contactless measurement of electric current using magnetic sensors, Technisches Messen Early Access 10.1515/teme-2019-0032

P. Ripka, M. Mirzaei, A. Chirtsov, J. Vyhnanek: Transformer Position Transducer for Pneumatic Cylinder, Sensors Act. A 294 (2019) 91–101

Ch. Zheng et al.: Magnetoresistive Sensor Development Roadmap (Non-Recording Applications), IEEE Transactions on Magnetics  55 Iss: 4 , April 2019 article # 0800130  DOI: 10.1109/TMAG.2019.2896036

M. Mirzaei, P. Ripka, A. Chirtsov, J. Vyhnanek: Eddy current linear speed sensor, IEEE Transactions on Magnetics, Vol. 55 (2019) Issue: 1, Article #4000304

2018

P. Ripka; A. Chirtsov: Busbar current transducer with suppression of external fields and gradient;, IEEE Transactions on Magnetics Vol. 54 Issue: 11, 2018, Article # 4002504

M. Mirzaei; P. Ripka: Analytical Functions of Magnetization Curves for High Magnetic Permeability Materials, IEEE Transactions on Magnetics Vol. 54 Issue: 11, 2018, Article #  2002105

P. Ripka, A. Chirtsov, M. Mirzaei: Inductance position sensor for pneumatic cylinder, AIP Advances 8, 048001 (2018)

M. Mirzaei, P. Ripka, and A. Chirtsov: The effect of conductor permeability on electric current transducers, AIP Advances 8, 047506 (2018)

Petrucha, V.; Fúra, V.; Platil, A.: Cross-field Effect in a Triaxial AMR Magnetometer with Vector and Individual Compensation of a Measured Magnetic Field, IEEE Transactions on Magnetics. 2017, 53(4)
Ripka, P.; Chirtsov, A.; Mirzaei, M.; Vyhnánek, J.: Inductance position sensor for pneumatic cylinder
AIP Advances. 2017, 8(4),
Ripka, P.; Vyhnánek, J.; Grim, V. : A Busbar Current Sensor With Frequency Compensation
IEEE Transactions on Magnetics. 2017, 53(4), 1-5.
Vyhnánek, J.; Ripka, P.: Experimental Comparison of the Low-Frequency Noise of Small-Size Magnetic Sensors, IEEE Transactions on Magnetics. 2017, 53(4)
Butta, M.; Ripka, P.: Effect of Electroplated Ni1-xFex Composition on the Field-Induced Anisotropy

2017

IEEE Transactions on Magnetics. 2016, 52(5)
Butta, M.: Effect of Saccharin in Electroplated NiFe Alloy on the Noise of Fluxgate
IEEE Transactions on Magnetics. 2016, 52(5)
Butta, M.; Přibil, M.; Ripka, P.
Noise dependence on temperature in fluxgates with electroplated core
Sensors and Actuators. 2016, 2016(244)
Butta, M.: Orthogonal Fluxgate Magnetometers
In: High Sensitivity Magnetometers. Basel: Springer, 2016. pp. 63-102. Smart Sensors, Measurement and Instrumentation. vol. 19.
Janošek, M.: Parallel Fluxgate Magnetometers  In: High Sensitivity Magnetometers. Basel: Springer, 2016. pp. 41-61. Smart Sensors, Measurement and Instrumentation. vol. 19. ISSN 2194-8402
Ripka, P.; Přibil, M.; Schaeffer, V; Snoeij, M: Flugate Sensor With Pulse Feedback
IEEE Transactions on Magnetics. 2016, 52(5)
Ripka, P.; Přibil, M.; Petrucha, V.; Grim, V.; Draxler, K.: A Fluxgate Current Sensor With an Amphitheater Busbar IEEE Transactions on Magnetics. 2016, 52(7)
Ripka, P.; Draxler, K.; Styblíková, R.: DC-Compensated Current Transformer
Sensors. 2016, 16(1), 114-123.

M. Mirzaei, P. Ripka, V. Grim, A. Chirtsov: A Novel Position Sensor With a Conical Iron Core, IEEE Trans. Instrum. and meas.Vol. 69 , Iss 11, Nov. 2020, pp. 9178 – 9189, doi:  10.1109/TIM.2020.2999691

M. Mirzaei, P. Ripka, V. Grim, A. Chirtsov: Design and Optimization of an Eddy Current Speed Sensor for Rotating Rods, IEEE Sensors Journal 20 (2020), pp. 12241-12251, doi:  10.1109/JSEN.2020.3000442

M. Mirzaei, P. Ripka, V. Grim: A Novel Eddy Current Speed Sensor with Ferrite E-Core, IEEE Magn. Lett. Vol. 11, Iss. 1 article # 8102905,pp.1-5 DOI: 10.1109/LMAG.2020.2993501

P. Ripka, M. Mirzaei, A. Chirtsov, V. Grim: Temperature stability of the Transformer Position Transducer for Pneumatic Cylinder, JMMM Vol. 503, 1 June 2020, 166636, doi.org/10.1016/j.jmmm.2020.166636

M. Mirzaei, P. Ripka, A. Chirtsov, and V. Grim:  Eddy Current Speed Sensor with Magnetic Shielding, JMMM 502, 15 May 2020, 166568 https://doi.org/10.1109/JSEN.2020.3000442

M. Mirzaei, J. Machac, P. Ripka, A. Chirtsov, J. Vyhnanek, and V. Grim: Design of a Flat Type Magnetic Position Sensor Using Finite Difference Method,  IET Science, Measurement & Technology, Vol. 14, Iss.5, pp. 514 – 524, doi 10.1049/iet-smt.2019.0197

V. Grim, P. Ripka, J. Bauer: DC current sensor using switching-mode excited in-situ current transformer, JMMM Vol. 500 (2020) 166360  doi.org/10.1016/j.jmmm.2019.166370

M. Mirzaei, J. Vyhnanek, A. Chirtsov, V. Grim,  P. Ripka: Design and Modeling of a Linear Speed Sensor with a Flat Type Structure and Air Coils, JMMM Vol. 495 (2020)  article #165834,pp 1-10, https://doi.org/10.1016/j.jmmm.2019.165834

P. Ripka , J.Blazek, M. Mirzaei, P. Lipovský, M. Šmelko, K.Draganova: Inductive position and speed sensors, Sensors 2020, 20(1), 65; https://doi.org/10.3390/s20010065   

2019

A. Chirtsov, P. Ripka, V. Grim: Three-Phase Busbar Current Transducer, IEEE Magnetics Letters 10 (2019), Iss. 1 pp 1-5, article # 8110805  www.doi.org/10.1109/LMAG.2019.2957257

P. Ripka, P. Mlejnek, P. Hejda, A. Chirtsov, J. Vyhnanek:  Rectangular array current transducer with integrated fluxgate sensors, Sensors 201919(22), 4964

P. Ripka, V. Grim, A. Chirtsov: A 3-Phase Current Transducer based on microfluxgate sensors, Measurement Vol. 146, November 2019, pp. 133-138  https://doi.org/10.1016/j.measurement.2019.06.028

M. Mirzaei, P. Ripka, J. Vyhnanek, A.Chirtsov, V. Grim: Rotational Eddy Current Speed Sensor, IEEE Transactions on Magnetics vol. 55, no. 9, pp. 1-10, Sept. 2019, Art no. 4003710, 10.1109/TMAG.2019.2918163

P. Ripka: Contactless measurement of electric current using magnetic sensors, Technisches Messen Early Access 10.1515/teme-2019-0032

P. Ripka, M. Mirzaei, A. Chirtsov, J. Vyhnanek: Transformer Position Transducer for Pneumatic Cylinder, Sensors Act. A 294 (2019) 91–101 

Ch. Zheng et al.: Magnetoresistive Sensor Development Roadmap (Non-Recording Applications), IEEE Transactions on Magnetics  55 Iss: 4 , April 2019 article # 0800130  DOI: 10.1109/TMAG.2019.2896036

M. Mirzaei, P. Ripka, A. Chirtsov, J. Vyhnanek: Eddy current linear speed sensor, IEEE Transactions on Magnetics, Vol. 55 (2019) Issue: 1, Article #4000304

2018

P. Ripka; A. Chirtsov: Busbar current transducer with suppression of external fields and gradient;, IEEE Transactions on Magnetics Vol. 54 Issue: 11, 2018, Article # 4002504

M. Mirzaei; P. Ripka: Analytical Functions of Magnetization Curves for High Magnetic Permeability Materials, IEEE Transactions on Magnetics Vol. 54 Issue: 11, 2018, Article #  2002105

P. Ripka, A. Chirtsov, M. Mirzaei: Inductance position sensor for pneumatic cylinder, AIP Advances 8, 048001 (2018)

M. Mirzaei, P. Ripka, and A. Chirtsov: The effect of conductor permeability on electric current transducers, AIP Advances 8, 047506 (2018)

Petrucha, V.; Fúra, V.; Platil, A.: Cross-field Effect in a Triaxial AMR Magnetometer with Vector and Individual Compensation of a Measured Magnetic Field, IEEE Transactions on Magnetics. 2017, 53(4)
Ripka, P.; Chirtsov, A.; Mirzaei, M.; Vyhnánek, J.: Inductance position sensor for pneumatic cylinder
AIP Advances. 2017, 8(4),
Ripka, P.; Vyhnánek, J.; Grim, V. : A Busbar Current Sensor With Frequency Compensation
IEEE Transactions on Magnetics. 2017, 53(4), 1-5.
Vyhnánek, J.; Ripka, P.: Experimental Comparison of the Low-Frequency Noise of Small-Size Magnetic Sensors, IEEE Transactions on Magnetics. 2017, 53(4)
Butta, M.; Ripka, P.: Effect of Electroplated Ni1-xFex Composition on the Field-Induced Anisotropy

2017

IEEE Transactions on Magnetics. 2016, 52(5)
Butta, M.: Effect of Saccharin in Electroplated NiFe Alloy on the Noise of Fluxgate
IEEE Transactions on Magnetics. 2016, 52(5)
Butta, M.; Přibil, M.; Ripka, P.
Noise dependence on temperature in fluxgates with electroplated core
Sensors and Actuators. 2016, 2016(244)
Butta, M.: Orthogonal Fluxgate Magnetometers
In: High Sensitivity Magnetometers. Basel: Springer, 2016. pp. 63-102. Smart Sensors, Measurement and Instrumentation. vol. 19.
Janošek, M.: Parallel Fluxgate Magnetometers  In: High Sensitivity Magnetometers. Basel: Springer, 2016. pp. 41-61. Smart Sensors, Measurement and Instrumentation. vol. 19. ISSN 2194-8402
Ripka, P.; Přibil, M.; Schaeffer, V; Snoeij, M: Flugate Sensor With Pulse Feedback
IEEE Transactions on Magnetics. 2016, 52(5)
Ripka, P.; Přibil, M.; Petrucha, V.; Grim, V.; Draxler, K.: A Fluxgate Current Sensor With an Amphitheater Busbar IEEE Transactions on Magnetics. 2016, 52(7)
Ripka, P.; Draxler, K.; Styblíková, R.: DC-Compensated Current Transformer
Sensors. 2016, 16(1), 114-123.