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:
Dec. 30, 2014
Filed:
Mar. 17, 2011
Ulrich Vollmer, Weilheim, DE;
Ulrich Vollmer, Weilheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for determining the actual angle position of a rotatable magnetic component in an electric drive () having an odd number of pole pairs. An actual angle measurement value (φ) of the rotatable component is measured using an angle sensor () which only measures the actual angle measurement value (φ) within a predefined reduced angular area, and an associated device () for determining an actual angle position of a rotatable magnetic component in an electric drive (). According to the invention, the actual angle measurement value (φ) measured exclusively for the reduced angular area is converted using the direction and the sign of the magnetic field of the rotatable magnetic component in a clear angular position in non-reduced angular area, the direction and sign of the magnetic field of the rotatable magnetic element () being determined by applying first test impulses (U, U, U) to the electric drive () and by evaluating the resulting second test impulses (I, I, I, I, I) which are produced in the electric drive () in reaction with the applied first test impulses (U, U, U).