Bernhard Aschenbrenner, Bernhard Zagar,
"DSP Based Read Out System for Contactless High-Frequency Inductive Position Sensors"
: Proceedings of the XX IMEKO World Congress, 9-2012, ISBN: 978-89-950000-5-2
DSP Based Read Out System for Contactless High-Frequency Inductive Position Sensors
Sprache des Titels:
Proceedings of the XX IMEKO World Congress
This paper presents a precise and low cost absolute position inductive measurement system for rough industrial environments.
This transducer works on similar principles as contactless resolvers but consists of a rectangular antenna PCB, a passive LC resonance target and a signal processing unit.
The read out electronics utilize undersampling to demodulate the transducer in?phase and quadra ture output signals. Furthermore, the corresponding position is estimated from a lookup table (LUT) to avoid singularities in the inverse tangent and cotangent calculation.
The mechanical transducer arrangement, signal condition electronics design and measured results will be presented.