The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2005
Filed:
Feb. 06, 2004
Wolfgang Schmid, Langenargen, DE;
Uwe Rühringer, Tettnang, DE;
Gerold Kloos, Glebe, AU;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method is described for determining a rotation speed and a rotation direction of a component (), in particular a transmission output shaft, with a sensor device (). In the sensor device (), as a function of a rotation speed and direction of the component (), a first sensor signal and a second sensor signal are generated, which are phase shifted relative to one another and each of which, on reaching an upper switching threshold or a lower switching threshold in the sensor device (), triggers a switching signal. When there are alternating, consecutive switching signals of the two sensor signals, the sensor device () emits a pulse signal as a function of which a variation of a sensor signal is generated, which is used to determine a rotation speed of the component (). After a rotation direction reversal of the component () a pulse signal of the sensor device () is only generated after sensing a rotation movement of the component (), this rotation movement of the component () being sensed when, in alternation, a switching signal of one sensor signal is followed by a switching signal of the other sensor signal.