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:
Mar. 13, 2007
Filed:
Jan. 03, 2005
András Lelkes, Bad Dürrheim, DE;
András Lelkes, Bad Dürrheim, DE;
Minebea Co., Ltd., Nagano-Ken, JP;
Abstract
The invention relates to a method to control an electronically commutated motor in which the motor current is influenced as a function of an operating parameter of the motor. According to the invention, the motor current is adaptively switched as a function of the operating parameter of the motor. This means that the waveform over time of the motor current envelope is changed as a function of the operating parameter in such a way that for a value of the operating parameter below a fixed threshold value, a motor current for minimum noise generation is applied and for a value of the operating parameter above the fixed threshold value, a motor current for maximum efficiency of the motor is applied.