Title:DSP Based Read Out System for Contactless High-Frequency Inductive Position SensorsAuthor(s):Bernhard Aschenbrenner, Bernhard ZagarAbstract: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.Booktitle:Proceedings of the XX IMEKO World CongressISBN:978-89-950000-5-2Page Reference:6 page(s)Publishing:9/2012