Time-varying Electrical Impedance Tomography with IMM Scheme

K Y Kim1, S I Kang1, B S Kim1, M C Kim2, and S Kim3

1 Dept. of Electrical & Electronic Engr., Cheju National University (CNU), Cheju 690-756, Korea, kyungyk@cheju.ac.kr

2 Dept. of Chemical Engr.,CNU, Cheju 690-756, Korea, mckim@cheju.ac.kr

3 Dept. of Nuclear & Energy Engr., CNU, Cheju 690-756, Korea, sinkim@cheju.ac.kr

ABSTRACT

An effective electrical impedance imaging scheme is presented for on-line monitoring of the time- varying resistivity distribution inside the object based on the interacting multiple model (IMM) algorithm. The inverse problem is treated as non-linear state estimation problem and time-varying resistivity (state) is estimated on-line with the aid of the IMM algorithm.

Keywords Electrical Impedance Tomography, Kalman Filter, Interacting Multiple Model