Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 01, 2022 - June 04, 2022
In this research, we propose a structure to reduce the number of sensors in magnetic force difference type magnetic encoders. In the previous research, the problem of not being able to calculate the absolute angle due to the multipolarity of the magnet was solved by eccentric rotation, which enabled high resolution and calculation of absolute angle. However, when the number of sensors is less than the number of poles of the magnet, a large error occurs in a specific section. Therefore, we devised a method to calculate angles with high accuracy using fewer sensors than the number of poles by adjusting the magnetic force of the multi-pole magnet using the magnetic force difference for each pole.
