Rotor angle detection via shaft iron remanence for the balancing process of small rotors

Author

Knopik, T. ; Binder, A. ; Gullich, P.

Author_Institution

Darmstadt Univ. of Technol., Darmstadt

fYear

2007

fDate

6-8 Sept. 2007

Firstpage

291

Lastpage

296

Abstract

A magneto-resistive sensor for measuring the rotor position angle is introduced, which is based on the remanence of the ferromagnetic rotor shaft. Based on a mathematical model of the remanence field, a sensor concept for rotor positioning is developed. Several magnetization methods for obtaining a dipole field are discussed and were tested. A sensor prototype SR70 of company SchenckRotec^reg, Darmstadt/Germany, is presented, showing that an accuracy of 1deg (mechanical) for rotor positioning is possible, which allows the use of the sensor for the balancing process.

Keywords

angular measurement; electric sensing devices; magnetoresistive devices; remanence; rotors; shafts; ferromagnetic rotor shaft; magneto-resistive sensor; mathematical model; rotor angle detection; rotor position measurement; rotor positioning; shaft iron remanence; Iron; Magnetic field measurement; Magnetic sensors; Magnetization; Mathematical model; Mechanical sensors; Position measurement; Remanence; Shafts; Testing; balancing; contact less; high-speed; magneto-resistive; positioning; remanence field; sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Diagnostics for Electric Machines, Power Electronics and Drives, 2007. SDEMPED 2007. IEEE International Symposium on

Conference_Location

Cracow

Print_ISBN

978-1-4244-1061-3

Electronic_ISBN

978-1-4244-1062-0

Type

conf

DOI

10.1109/DEMPED.2007.4393110

Filename

4393110