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Wideband excitation signals for electrical impedance industrial process tomography

Nahvi M., Hoyle B. S.

Zeszyty Naukowe. Elektryka / Politechnika Łódzka

2009

z. 114

99-104

The paper addresses the foundational choice of excitation signal that can extend Electrical Impedance IPT to gain spectral data, allowing the interpretation of material or component identification; or the estimation of the parameters of a process model. It provides a review of candidate signals and their key design characteristics, including: pulse, sinc, maximal length pseudo random binary sequence and linear chirp forms. Features are analysed via an electrical network simulation. Conclusions address signal bandwidth, sampling, measurement duration, and frequency resolution.