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. 24, 2008
Filed:
Jan. 27, 2006
Yeon-ho Son, Suwon-si, KR;
Yeon-ho Son, Suwon-si, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon-si, KR;
Abstract
The invention relates to a brushless DC motor control apparatus controlling the number of revolutions of a brushless DC motor having a rotor with n poles (where n is a natural number) that rotates due to a supply current with m phases (where m is a natural number) supplied to a stator, comprising: a rotation detector part, which counts the number of revolution pulses from the brushless DC motor caused by the rotation of the rotor, a revolution requirement amount input part, which receives the number of revolutions of the brushless DC motor as input and converts it to a corresponding revolution requirement amount, a comparison part, which compares the number of revolution pulses and the revolution requirement amount, and a current controller part, which controls the supply current supplied to the brushless DC motor according to comparison results from the comparison part. The number of revolutions can be controlled through a digitalized method by detecting and counting counter electromotive forces on a sensorless type brushless DC motor or F/G pulses from a sensor type brushless DC motor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile