Talks and Poster Presentations (with Proceedings-Entry):
M. Poik, D. Kohl, M. Mayr, C. Kerschner, G. Schitter:
"Efficient Demodulation for Measuring the Amplitude of Mechanical Oscillations";
Talk: IEEE International Instrumentation and Measurement Technology Conference Proceedings I2MTC (2020),
Dubrovnik, Kroatien;
05-25-2020
- 05-28-2020; in: "Proceedings of the IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2020)",
(2020),
5 pages.
English abstract:
The accurate detection and demodulation of mechanical oscillations is crucial for the performance of miniaturized resonant sensors and scanners. Demodulation by external instruments such as lock-in amplifiers or spectrum analyzers is not always desired due to their large size, complexity and cost. The demodulation technique proposed in this paper enables a simplified measurement of the oscillation amplitude of a mechanical oscillator with integrated deflection sensors, such as piezoresistive or capacitive elements. Configuring the sensors in an AC bridge circuit operated at the oscillator resonance frequency leads to a direct demodulation at the output of the bridge circuit. The presented method is experimentally verified on an AFM cantilever with integrated piezoresistive elements.
Keywords:
Demodulation, Resonant sensor, Cantilever, AFM
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1109/I2MTC43012.2020.9129045
Electronic version of the publication:
https://publik.tuwien.ac.at/files/publik_291330.pdf
Created from the Publication Database of the Vienna University of Technology.