偏心構造を利用した小型かつ高性能な磁気式アブソリュートエンコーダの開発

抄録

Small size, fast response characteristics, and high positioning accuracy are exposed in current actuator especially the haptics applications. However, it is inevitable that the encoder necessary for controlling the actuator is large in size due to high resolution and absolute. The magnetic encoder is a key issue to satisfy requirement. This paper shows a new design of a magnetic absolute encoder with the eccentricity. Signal caused by the eccentricity have difference which contain current position of magnetic rotor. Our proposal method calculate current position of magnetic rot0r by using look up table an obtained several calibration. We confirm improvement of the precision by experiment.