A capacitive 4-turn angular-position sensor

Author

Brasseur, Georg

Author_Institution

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

Volume

47

Issue

1

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

275

Lastpage

279

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; capacitive sensors; measurement errors; position measurement; transducers; absolute measurement; accuracy; angular rotor position; automotive applications; axial shifting; capacitive sensor; compact sensor; condensation; cost; dirt; four turn angular-position sensor; metrology applications; prototype sensor; radiometry; ratiometric measurement; resolution; rigid rotor; steering sensor; Automotive engineering; Capacitive sensors; Metrology; Position measurement; Prototypes; Robustness; Sensor phenomena and characterization; Sensor systems; Thickness measurement; Velocity measurement;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.728833

Filename

728833