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:
Feb. 20, 1996
Filed:
Oct. 19, 1994
Rikio Yoshikawa, Shizuoka, JP;
Shuichi Kobayashi, Shizuoka, JP;
Kokusan Denki Co., Ltd., Shizuoka, JP;
Abstract
A control device for a brushless motor capable of stopping the brushless motor without any complicated control. The control device includes a rotation control section to which an output of a position detector detecting a polarity of a magnet field of a rotor on a side of a stator is fed and which generates a driving signal of a predetermined polarity based on the output of the position detector input thereto. Also it includes a motor driving section to which the driving signal is fed and which flows an excitation current through a driving coil for a phase determined depending on a polarity of the driving signal input thereto. The rotation control section includes a latch circuit which feeds the motor driving section with a signal of a polarity corresponding to that of an output signal of the position detector while it is fed with a rotation command and holds, when it is fed with a stop command, the signal fed to the motor driving section at a polarity thereof obtained at the time of feeding of the stop command thereto.