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:
Jun. 04, 2002
Filed:
Jul. 12, 2000
Hans Helmut, St. Georgen, DE;
Precision Motors Deutsche Minebea GmbH, Spaichingen, DE;
Abstract
The present invention concerns an electronically commutated motor, in which for commutation, the output signals of a number of correspondingly arranged Hall sensors are initially evaluated to generate a multiple-figure digital code and in which, after startup of the motor, only one figure of the code is still generated by evaluation of the output signal of a single Hall sensor, while the remaining figures of the digital code are taken from a table stored in an electronic logic component as bit pattern or determined by means of a corresponding algorithm. The advantage of this expedient is that commutation no longer depends on the position-tolerance arrangement of several Hall sensors, but occurs at the best possible time.