J. Phys. IV France
Volume 08, Numéro PR2, June 1998
Soft Magnetic Materials 13
Page(s) Pr2-685 - Pr2-688
Soft Magnetic Materials 13

J. Phys. IV France 08 (1998) Pr2-685-Pr2-688

DOI: 10.1051/jp4:19982159

Fuzzy logic control system for the excitation of a 3-phase single sheet tester

A. Hasenzagl1, H. Pfützner1, A. Saito2 and Y. Okazaki3

1  Institute of Fundamentals and Theory of Electrotechnics, Bioelectricity and Magnetism Laboratory, University of Technology, Gusshausstrasse 27/351, 1040 Vienna, Austria
2  Faculty of Education, Tottori University, Tottori, Japan
3  Faculty of Engineering, Gifu University, Gifu, Japan

The defined rotational magnetization of highly grain oriented SiFe sheets is complicated by the material's strong anisotropy. Especially circular magnetization is usually restricted to induction values of 1.2 T, even if advanced feed-back systems are applied. Specifically for anisotropic materials, a 3-phase excited single sheet tester was developed which offers 1.2 T magnetization without feed-back. For values up to 1.5 T, a digital control system is described which is based on fuzzy algorithms. It offers target approximations with procedure times close to 1 minute, the errors being restricted to some percent.

© EDP Sciences 1998