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:
Jul. 06, 2010
Filed:
Jun. 22, 2007
Robert Bernhard, Garching a.d. Alz, DE;
Robert Bernhard, Garching a.d. Alz, DE;
Dr. Johannes Heidenhain GmbH, Traunreut, DE;
Abstract
In a circuit configuration for ascertaining tilt errors in connection with a position-measuring device, the position-measuring device includes at least one incremental track on a measuring graduation that is able to be read by a scanner, which is movable relative to the measuring graduation in a measuring direction, and the scanner is guided along the measuring graduation and the scanner is rotated with respect to the measuring graduation by an angle of misalignment that is changeable during the relative movement. Perpendicular to the measuring direction, the scanner has a first scanning region and a second scanning region, whereby upon reading the at least one incremental track, at least one first position signal is able to be generated by the first scanning region and at least one second position signal is able to be generated by the second scanning region. The at least one first position signal and the at least one second position signal are supplied to an arithmetic unit in which, from the at least one first position signal and from the at least one second position signal, at least one tilt-error signal is able to be generated by addition and/or subtraction operations, the amplitude of the tilt-error signal being determined by an angle of tilt and being a measure for the angle of misalignment.