Planar High-Frequency Contactless Inductive Position Sensor
Sprache des Vortragstitels:
2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2013)
Sprache des Tagungstitel:
This paper presents a low cost, precise and reliable inductive absolute position measurement system. It is suitable for rough industrial environments, offers a high inherent resolution (0.1 % of antenna length), can measure target position over a wide measurement range and can potentially measure multiple target locations. The position resolution is improved by adding two additional finer pitched receive channels. This sensor works on similar principles like contactless resolvers. It consists of a rectangular antenna PCB and a passive LC resonance target. A mathematical model and the equivalent circuit of this kind of sensor is explained in detail.