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EP0477653A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Rotary encoder, in particular turning angle sensor for vehicles

Assignee: Wilhelm Ruf KG
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Filing: 1991-09-10
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Granted: —
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Expires: 2011-09-10
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Abstract

Abstract Translated from German Der Drehwinkelgeber besteht aus zwei von einer gemeinsamen Welle (5) antreibbaren Potentiometern, deren Schleiffedern (7, 9) in gleichem radialen Abstand von der Welle (5) angeordnet sind und deren Widerstandsbahnen (36) gleichen Durchmesser aufweisen und axial gegeneinander versetzt sind. Die Schleiffeder des einen Potentiometers wird direkt und die des zweiten Potentiometers mittels eines Untersetzungsgetriebes betätigt. Hierdurch werden die elektrischen Eigenschaften, wie Linearität, Hysteresefreiheit und Auflösungsvermögen verbessert und gleichzeitig ist es möglich, die Nennwerte der Widerstände beider Potentiometer weitestgehend übereinstimmend auszulegen. The rotary encoder consists of two potentiometers that can be driven by a common shaft (5), the sliding springs (7, 9) of which are arranged at the same radial distance from the shaft (5) and whose resistance tracks (36) have the same diameter and are axially offset from one another. The grinding spring of one potentiometer is actuated directly and that of the second potentiometer by means of a reduction gear. This improves the electrical properties, such as linearity, freedom from hysteresis and resolving power, and at the same time it is possible to design the nominal values of the resistances of both potentiometers to be largely identical.

Inventors

  • 👤 Werner Flierl

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 21:40
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/30

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