APPLICATION OF AN ELECTROMAGNETIC NUMERICAL MODEL IN ACCURATE MEASUREMENT OF HIGH VELOCITIES
Pavel Fiala
fialap@feec.vutbr.czBrno 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, projectileReferences
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
Authors
Pavel Fialafialap@feec.vutbr.cz
Brno University of Technology, Faculty of Electrical Engineering and Communication, Department of Theoretical and Experimental Electrical Engineering Czechia
Authors
Martin FriedlBrno University of Technology, Faculty of Electrical Engineering and Communication, Department of Theoretical and Experimental Electrical Engineering Czechia
Statistics
Abstract views: 196PDF downloads: 58
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Most read articles by the same author(s)
- Miloslav Steinbauer, Roman Pernica, Jiri Zukal, Radim Kadlec, Tibor Bachorec, Pavel Fiala, MODELING ELECTROMAGNETIC NANOSTRUCTURES AND EXPERIMENTING WITH NANOELECTRIC ELEMENTS TO FORM PERIODIC STRUCTURES , Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska: Vol. 10 No. 4 (2020)
- Pavel Fiala, Karel Bartušek, Jarmila Dědková, Premysl Dohnal, EMG FIELD ANALYSIS IN DYNAMIC MICROSCOPIC/NANOSCOPIC MODELS OF MATTER , Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska: Vol. 9 No. 1 (2019)
