Patent · US Active

Control device and method for evaluating a control device

US7868271B2 · kind B2 · utility

0Cited by

6References

17Claims

0Family size

Assignee

E.G.O. Elektro-Geraetebau GmbH · DE

Inventors

Wolfgang Hamm · Bretten, DE
Martin Baier · Ettlingen, DE
Ralf Dorwarth · Oberderdingen, DE

Key dates

Filing date	Nov 2, 2007
Grant date	Jan 11, 2011
Priority date	—
Expiry date	Jan 29, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH01C10/34
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A control device for converting a control movement along a control path into a control signal has the control path corresponding to different control stages or control types. The control device has two measuring tracks with a linearly changing resistance associated with each track. In one embodiment, these measuring tracks are positioned concentric to each other in a semicircle. A voltage U, which is tapped via two opposite interconnected sliders, is applied to both measuring tracks at a junction point while the other junction point is connected to ground. If the detected values of the tapped voltages deviate from a corresponding stored value or pairs of values, there must be a fault, due to, for example a broken slider. This makes it possible to perform a test for determining the fault or a malfunctioning control device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.