Development of a non-contact multi-DoRF rotary encoder

In this paper, we proposed a method for new determining the orientation of a rotor with three degrees of rotational freedoms without touching the rotor. And, we implemented the prototype using the method and estimated performance of this. Finally, we achieved the following performances; Average of error: 0.117 [deg], Standard deviation of error: 1.846 [deg], Frequency response 63.95 [Hz].