http://www.cnr.it/ontology/cnr/individuo/prodotto/ID1132

Capacitive angular-position sensor with electrically floating conductive rotor and measurement redundancy (Articolo in rivista)

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Label

Capacitive angular-position sensor with electrically floating conductive rotor and measurement redundancy (Articolo in rivista) (literal)

Anno

Alternative label

Ferrari, V; Ghisla, A; Marioli, D; Taroni, A (2006)
Capacitive angular-position sensor with electrically floating conductive rotor and measurement redundancy
in IEEE transactions on instrumentation and measurement
(literal)

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Univ Brescia, Dept Elect Automat, I-25123 Brescia, Italy; Univ Brescia, INFM, I-25123 Brescia, Italy (literal)

Titolo

Capacitive angular-position sensor with electrically floating conductive rotor and measurement redundancy (literal)

Abstract

This paper presents a capacitive angular-position sensor with a contactless electrically floating conductive rotor and an interface electronic circuit that is designed to maximize the performance/cost ratio. The sensor includes two separate and independent measurement sections that sense the same angle and provide redundancy in critical applications. The electronic interface is based on a relaxation oscillator that, for each of the two sections, measures an appropriate quantity that relates capacitance ratio to angular position and provides a dc output voltage that varies ratiometrically with respect to the supply voltage. The sensor was built in a version with +/- 11 degrees measuring range for each section. Experimental tests showed a linearity better that 1% of the span. (literal)

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