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The objective of the paper is to present the implementation of the first sigma-delta control of Surface Potential (SP) for nanostructured layers made of metal oxides in gas sensors. The objective of this type of controls is to improve the time response and reliability of these sensors. This is done by generating adequate temperature waveforms aiming at generating a constant surface potential in the...
The objective of this letter is to show the first results obtained with a control designed to keep the average surface potential of a nanostructured layerconstant. This condition is equivalent to keeping constant the resistivity of the layer measured at a constant reference temperature. The proposed closed-loop control achieves this objective by adequately changing the average temperature of the temperature...
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