A capacitive 4-turn angular-position sensor

Author

Brasseur, G.

Author_Institution

Inst. fur Allgemeine Elektrotech. und Elektron., Tech. Univ. Wien, Austria

Volume

2

fYear

1997

fDate

19-21 May 1997

Firstpage

1262

Abstract

A robust capacitive 4-turn angular-position sensor for automotive and metrology applications is presented. The main advantages of this low-cost system are its simplicity, speed, high accuracy (±0.35°) and resolution (±0.02°) over the absolute measurement range of more than ±720°, compact sensor outlines, and insensitivity to dirt or condensation. The paper describes the working principle, derives the required relationships for computing the angular rotor position, and discusses measurement results obtained from a prototype sensor with small outlines (50 mm diameter and 8 mm thickness) used as a steering sensor in vehicles

Keywords

angular measurement; automotive electronics; displacement measurement; electric sensing devices; position measurement; rotors; 50 mm; 8 mm; absolute measurement; accuracy; automotive applications; axial shifting; capacitive 4-turn angular-position sensor; flexible rotor bending; metrology applications; ratiometric measurement; resolution; steering sensor; Automotive engineering; Capacitive sensors; Metrology; Position measurement; Prototypes; Robustness; Sensor phenomena and characterization; Sensor systems; Thickness measurement; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE

Conference_Location

Ottawa, Ont.

ISSN

1091-5281

Print_ISBN

0-7803-3747-6

Type

conf

DOI

10.1109/IMTC.1997.612401

Filename

612401