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Project: Development and implementation of an impedance analyzer based on analog to digital conversion and powerful signal processing algorithms

Acronym: IMPANA
Main Objective:
The research team’s expertise in test and characterization of analog to digital converters, signal processing algorithms, power quality measurements, development of modern digital instrumentation and impedance measurements will be used in the development and implementation of an inexpensive accurate impedance analyzer to operate in the frequency range from 10 Hz up to 1 MHz.
Following the team’s previous work, a instrument prototype including all the system electronics and the software will be built. The device is based on the traditional I-V method coupled with analog to digital conversion and signal processing algorithms to be executed in the prototype digital signal processor. The algorithms to be implemented will determine the parameters of the sine signals that best fit the acquired samples of two channels and thus estimate the unknown impedance parameters.
The accuracy of the final instrument will depend on the project progress but basic accuracies of 0.1% for the impedance magnitude and 0.01º for the phase or better are expected.
Reference: PTDC/EEA-ELC/72875/2006
Funding: FCT/PTDC
Start Date: 01-09-2007
End Date: 01-12-2010
Team: Pedro Miguel Pinto Ramos, Fernando Manuel Tim Tim Janeiro, Tomás Radil, Mouhaydine Tlemçani
Groups: Instrumentation and Measurements – Lx
Local Coordinator: Pedro Miguel Pinto Ramos
Links: Internal Page
Associated Publications