APPLICATION OF AN ELECTROMAGNETIC NUMERICAL MODEL IN ACCURATE MEASUREMENT OF HIGH VELOCITIES

Pavel Fiala

fialap@feec.vutbr.cz
Brno University of Technology, Faculty of Electrical Engineering and Communication, Department of Theoretical and Experimental Electrical Engineering (Czechia)

Martin Friedl


Brno University of Technology, Faculty of Electrical Engineering and Communication, Department of Theoretical and Experimental Electrical Engineering (Czechia)

Abstract

The velocity of various objects measured within a large number of disciplines and activities. This paper presents the process of designing an accurate method and equipment for the measurement of velocity in one-shot nonlinear processes, which occur only once and are thus characterized by zero repeatability. The measurement methods must therefore enable the recording, saving, and retroactive evaluation of the processes at a pre-defined accuracy; all these operations are performed to facilitate comparison of the recorded event and other similar processes. However, the electromagnetic method described in the paper does not include the disadvantages of known optical methods. We therefore present the design of an inductive sensor equipped with an electronic signal processing system. This design is based on numerical evaluation of the relativistic effect occurring during the application of the electromagnetic principle in sensing the position and velocity of an object J. Van Bladel. The final section of the paper contains a discussion of the measured results. The authors investigate the use of a coupled model of the magnetic field and analyze the motion of a conductive object in this field. The analysis shows that, for an exact evaluation of the influence of all effects, it is necessary to consider the phenomena related to the movement of a system relative to the other one. It is shown that related distinctive effects affect the resultant electromagnetic field distribution already at the relative velocity of v0= 1m∙s-1.


Keywords:

relativistics, model, numerical model, FEM, electro-hydro-dynamics, moving objects, projectile

Ansys Inc.: Ansys Theory Reference Manual. Program Ansys supplement.
  Google Scholar

Boquan Li, Wang Xiaofei, Pan Habin a Luo Kaiyu: Study on Error Analysis of Measuring Projectile's Speed Using Induction-Type Coil Target. Electrical and Kontrol Engineering (ICECE), 2010 International Conference on [online]. Wuhan, 2010 [04.11.2011].
  Google Scholar

Dědek L., Dědková J.: Elektromagnetismus, VUTIUM, Brno, Czech Republic, 2000.
  Google Scholar

Faiz J., Ebrahimir B. M.: Mixed fault diagnosis in three- phase squirrel-cage induction motor using analysis of air-gap magnetic field. Progress in Electromagnetics Research, Vol. 64, 2006, 239–255.
  Google Scholar

Fiala P.: EMHD model used for linear moving objects analysis. Progress in electromagnetic research, Boston, USA, 5–8.07.2010.
  Google Scholar

Fiala P.: Secondary winding model of current transformer-switchable variant. Research report, Laboratory of modeling and optimization field in electromagnetic systems, FEI VUT and ABB EJF a.s. Brno, no. 1/99, 21.01.1999, Brno, Czech Republic, 1999.
  Google Scholar

Fiala P.: Transformer partial discharge modeling, minimal breakdown value set in critical parts of transformer design. Research report, Laboratory of modeling and optimization field in electromagnetic systems, FEI VUT and ABB EJF a.s. Brno, no. 2/99, 18.03.1999, Brno, Czech Republic, 1999.
  Google Scholar

Fiala P., Szabo Z., Friedl M.: EMHD Models Respecting Relativistic Processes of Trivial Geometries. Progress In Electromagnetics Research Symposium Proceedings, Suzhou, China, 12–16.09.2011.
  Google Scholar

Haňka L.: Teorie elektromagnetického pole. SNTL, Praha, Czech Republic, 1971.
  Google Scholar

Holmes J., Ishimaru A.: Relativistic communications effects associated with moving space antennas. Antennas and Propagation, IEEE Transactions on, Vol. 17, Iss. 4, 1969, 484–488.
  Google Scholar

Hua Y., Liu Q. Z., Zou Y. L., Sun L.: A haybrid FE-BI method for electromagnetic scattering from dielectric bodies partially covered by conductors. Journal of Electromagnetic Waves and Applications, Vol. 22, No. 2–3, 2008, 423–430.
  Google Scholar

Jha P., Raj G., Upadhyaya A.K.: Relativistic and ponderomotive effects on stimulated Raman scattering of intense laser radiation in plasma. Plasma Science, IEEE Transactions on, Vol. 34, Iss. 3, Part 3, 2006, 922–926.
  Google Scholar

Kikuchi H.: Electrohydrodynamics in dusty and dirty plasmas, gravito-electrohydrodynamics and EHD. Kluwer Academic Publishers, 2001.
  Google Scholar

Kuneš J., Vavroch O., Franta V.: Základy modelování. SNTL, Praha, Czech Republic, 1989.
  Google Scholar

Maxwell J. C.: A treatise on electricity and magnetism. London Macmillan and co., Publishers to the University of Oxford, 1873.
  Google Scholar

PROTOTYPA, 2007. Avialable from: http://www.prototypa.cz/menu1.html [09.12.2011]
  Google Scholar

Stratton J.: Teorie elektromagnetického pole, SNTL, Praha, Czech Republic, 1985.
  Google Scholar

Touati S., Ibtiouen R., Touhami O., Djerdir A.: Experimental Investigation and Optimization of Permanent Magnet Motor Based on Coupling Boundary Element Method with Permeances Network. Progress In Electromagnetics Research, Vol. 111, 2011, 71–90.
  Google Scholar

Van Bladel J.: Foucault currents in a conducting sphere moving with constant velocity. IEE Proceedings, Vol. 13S, Pt. A, No. 7, September 1988.
  Google Scholar

Van Bladel J.. Motion of a conducting loop in a magnetic field. IEE Proceedings, Vol. 13.5, Pt. A, No. 4, April 1988.
  Google Scholar

Yarim C., Daybelge U. Sofyali A.: Search for the general relativistic effects on the motion of a spacecraft. Recent Advances in Space Technologies, RAST'09. 4th International Conference, 2009, 553–556.
  Google Scholar

Download


Published
2015-09-02

Cited by

Fiala, P., & Friedl, M. (2015). APPLICATION OF AN ELECTROMAGNETIC NUMERICAL MODEL IN ACCURATE MEASUREMENT OF HIGH VELOCITIES. Informatyka, Automatyka, Pomiary W Gospodarce I Ochronie Środowiska, 5(3), 3–10. https://doi.org/10.5604/20830157.1166544

Authors

Pavel Fiala 
fialap@feec.vutbr.cz
Brno University of Technology, Faculty of Electrical Engineering and Communication, Department of Theoretical and Experimental Electrical Engineering Czechia

Authors

Martin Friedl 

Brno University of Technology, Faculty of Electrical Engineering and Communication, Department of Theoretical and Experimental Electrical Engineering Czechia

Statistics

Abstract views: 158
PDF downloads: 43


License

Copyright (c) 2015 Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska" (IAPGOŚ)

Creative Commons License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.