Stefan Clara, Hannes Antlinger, Bernhard Jakoby,
"A Viscosity Sensor Utilizing an Electromagnetically Actuated Oscillating Sphere"
: 2011 IEEE Sensors Proceedings, IEEE, 445 Hoes Lane Piscataway, NJ 08855-1331 USA, Seite(n) 1534-1537, 10-2011, ISBN: 978-1-4244-9288-6
A Viscosity Sensor Utilizing an Electromagnetically Actuated Oscillating Sphere
Sprache des Titels:
2011 IEEE Sensors Proceedings
We present a novel viscosity sensor principle which
uses an oscillating metal sphere attached to a wire acting as mechanical spring. The oscillation is electromagnetically excited using four actuation coils. The arrangement of the coils allows a linear oscillation in one plane but also a circular motion if the actuation coils are driven accordingly. The latter causes a constant speed of the sphere and thus a stationary flow around the sphere, which allows probing a different rheological regime (more comparable to conventional falling ball viscometers) compared to the oscillation mode featuring continuous acceleration and deceleration.