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:
Aug. 15, 2006
Filed:
Dec. 03, 2004
Heinz-joachim Gilsdorf, Donnersdorf, DE;
Achim Thomae, Bergrheinfeld, DE;
Stefan Rappelt, Gerolzhofen, DE;
Thomas Kutsche, Schweinfurt, DE;
Heinz-Joachim Gilsdorf, Donnersdorf, DE;
Achim Thomae, Bergrheinfeld, DE;
Stefan Rappelt, Gerolzhofen, DE;
Thomas Kutsche, Schweinfurt, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A first acceleration sensor is arranged on a vehicle body for detecting an acceleration signal of the vehicle body and a second acceleration sensor is arranged on a wheel-side axle part for detecting an acceleration signal of the wheel-side axle part, the vehicle body and the wheel-side axle part execute relative movement with respect to each other. The wheel acceleration signal and the body acceleration signal are each integrated twice to form respective distance signals. The difference between the two distance signals at a first time (t) is determined and stored as a gap value. A second distance signal difference is determined at a second time (t) for a new gap value. When the wheel-side axle part reaches a reference position with respect to the vehicle body during the relative movement between the axle part on the wheel side and the vehicle body, a switching signal is generated and is used as a reference signal for determining the absolute position of the wheel side axle part along with the difference calculations.