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.
|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|