Open AccessDesign of a magnetic encoder using Hall effect
Author(s) -
William Alejandro López-Contreras,
José Danilo Rairán-Antolines
Publication year - 2019
Publication title -
visión electrónica/visión electrónica
Language(s) - English
Resource type - Journals
eISSN - 2248-4728
pISSN - 1909-9746
DOI - 10.14483/22484728.15180
Subject(s) - encoder , rotary encoder , linearization , angular displacement , hall effect sensor , position (finance) , magnet , computer science , voltage , control theory (sociology) , acoustics , physics , electrical engineering , engineering , artificial intelligence , control (management) , nonlinear system , finance , quantum mechanics , economics , operating system
We present the design of a magnetic encoder to measure angular position. The proposed encoder includes two Hall sensors in quadrature in a fixed platform. In addition, and over the sensors, there are two permanent magnets in a shaft. The relative motion between the fixed and the movable components generate a voltage variation in the sensors, which serve to generate the approximation of the angular position. We detail the acquisition process and the linearization method, because we consider that these are the most important contributions of this work. Lastly, we show the application of the encoder in the position control of a direct current motor to show the performance of the encoder estimating fast and slow angular position changes.