Consideration for a high resolution of magnetic rotary encoder

Author

Kikuchi, Y. ; Nakamura, E. ; Wakiwaka, H. ; Yamada, H. ; Yamamoto, Y.

Author_Institution

Graduate Sch. of Sci. & Technol., Shinshu Univ., Nagano, Japan

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4959

Lastpage

4961

Abstract

The structure of a magnetic rotary encoder is very simple compared with an optical type and is not affected in dust and mist conditions. However, a magnetic rotary encoder with an upper limit of encoder resolution of 2000 pulses per revolution (ppr) per track has lower resolution compared with an optical encoder. In this paper, a high resolution magnetic rotary encoder with 4000 ppr per track resolution utilizing a minimum number of magneto-resistive elements has been developed by using a double interpolation method. A parameter analysis of the magnetization and the detection processes for the main magneto-resistive output voltage using a finite element method is described

Keywords

angular measurement; finite element analysis; interpolation; magnetic sensors; magnetoresistive devices; detection; double interpolation; finite element method; high resolution magnetic rotary encoder; magnetization; magneto-resistive element; output voltage; parameter analysis; track resolution; Finite element methods; Interpolation; Magnetic analysis; Magnetic heads; Magnetization; Magnetostatic waves; Optical distortion; Optical sensors; Signal resolution; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539301

Filename

539301