An efficient digital controller for active shielding circuits

Author

Antonini, G. ; Cristina, S.

Author_Institution

Dipt. di Ingegneria Elettrica, L´´Aquila Univ., Italy

Volume

1

fYear

2000

fDate

2000

Firstpage

49

Abstract

Active shielding has been previously considered as an effective means for the attenuation of extremely low frequency magnetic fields. In the present paper an effective (digital) discrete time controller for active shields is presented pointing out its capability to drive active circuits in order to generate a magnetic field with the same amplitude as the incident one but oppositely directed. The digital controller is tested with several magnetic field waveforms showing very good tracking capabilities due to its wide bandwidth. Finally the proposed discrete time controller is used to drive an active circuit to reduce the low frequency magnetic shield radiated by the power section of an electronic system

Keywords

active networks; controllers; digital control; discrete time systems; magnetic shielding; active circuits; active shielding circuit; attenuation; efficient digital controller; extremely low frequency magnetic fields; magnetic field waveforms; power section; tracking capabilities; Active circuits; Bandwidth; Digital control; Drives; Frequency; Magnetic circuits; Magnetic field measurement; Magnetic fields; Magnetic materials; Magnetic shielding;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2000. IEEE International Symposium on

Conference_Location

Washington, DC

Print_ISBN

0-7803-5677-2

Type

conf

DOI

10.1109/ISEMC.2000.875536

Filename

875536