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:
May. 11, 2010
Filed:
Jun. 08, 2005
Alfred Pecher, Stadtlauringen, DE;
Alfred Pecher, Stadtlauringen, DE;
Schaeffler KG, Herzogenaurach, DE;
Abstract
The invention relates to a method and a computer program for determining operating parameters such as, in particular, the rotational speed, the rotational direction, the radial force, the axial force or of structural sound events of a rotating roller bearing to which a sensor arrangement is fixed which, on rotation of the roller bearing delivers a sinusoidal signal, depending on its rotational position, which is sampled at sampling points k, k+1, k+2, . . . To determine the rotational speed, the rotational direction, the radial force and/or the axial force, a mean value is determined by means of estimation and the operating parameters are determined on the basis of a corrected signal which does not obtain an offset by subtraction of the estimated mean value from the sensor signal. To determine structural sound events, the sensor signals are filtered in a high-pass filter and structural sound occurring is determined by estimating a statistical moment of at least the second order. The invention also relates to a roller bearing which is provided with an evaluating device for carrying out the method.