Signal processing for capacitive angular position sensors by the discrete Fourier transform

Author

Thurner, Thomas ; Cermak, Stefan P. ; Brasseur, Georg ; Fulmek, Paul L.

Author_Institution

Inst. of Electr. Meas. & Meas. Signal Process., Graz Univ. of Technol., Austria

Volume

2

fYear

2001

fDate

2001

Firstpage

1135

Abstract

This paper presents a new approach for the evaluation of the signals of robust capacitive angular position sensors. Previously developed sensors used a ratiometric algorithm to calculate the angular position from the signals of the sensors´ segments. Applying the Discrete Fourier Transform (DFT) to the signals of the sensor leads to an increased resolution and accuracy. This is demonstrated by comparing the results from both algorithms applied to simulated data and to data taken from measurement

Keywords

angular measurement; capacitive sensors; discrete Fourier transforms; position measurement; signal processing; DFT; accuracy improvement; capacitive angular position sensors; discrete Fourier transform; resolution improvement; signal processing; Capacitance; Capacitive sensors; Discrete Fourier transforms; Electric variables measurement; Materials science and technology; Position measurement; Signal processing; Signal processing algorithms; Signal resolution; Stators;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE

Conference_Location

Budapest

ISSN

1091-5281

Print_ISBN

0-7803-6646-8

Type

conf

DOI

10.1109/IMTC.2001.928256

Filename

928256