DSP BASED READ OUT SYSTEM FOR CONTACTLESS HIGH-FREQUENCY INDUCTIVE POSITION SENSORS |
|---|
| B. Aschenbrenner, B. G. Zagar |
- Abstract:
- 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 quadrature 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.
- Keywords:
- inductive sensor, contactless, undersampling, quadrature, synchronous demodulation
- Download:
- IMEKO-WC-2012-TC7-O13.pdf
- DOI:
- -
- Event details
- Event name:
- XX IMEKO World Congress
- Title:
Metrology for Green Growth
- Place:
- Busan, REPUBLIC of KOREA
- Time:
- 09 September 2012 - 12 September 2012