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. 04, 2007
Filed:
Dec. 21, 2005
Wei-ben Wang, Guangdong, CN;
Wun-chang Shih, Guangdong, CN;
Ching-hsing Huang, Guangdong, CN;
Chien-long Hong, Guangdong, CN;
Chiung-mei Wang, Guangdong, CN;
Chin-jung Chen, Guangdong, CN;
Hsiang-ho Huang, Guangdong, CN;
Huan-chao Lin, Guangdong, CN;
Hsien-sheng Pei, Guangdong, CN;
Wei-Ben Wang, Guangdong, CN;
Wun-Chang Shih, Guangdong, CN;
Ching-Hsing Huang, Guangdong, CN;
Chien-Long Hong, Guangdong, CN;
Chiung-Mei Wang, Guangdong, CN;
Chin-Jung Chen, Guangdong, CN;
Hsiang-Ho Huang, Guangdong, CN;
Huan-Chao Lin, Guangdong, CN;
Hsien-Sheng Pei, Guangdong, CN;
Foxconn Technology Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
A sensorless and brushless motor is disclosed including a stator, a rotor, a control circuit and an induction coil (). The stator includes a stator core () and a stator coil () wound around the stator core. The rotor includes a rotor magnet (). The control circuit is electrically connected with the stator coil for controlling a current energizing the stator coil. The induction coil is mounted to the stator and electrically connected with the control circuit. When the rotor rotates, the induction coil is capable of outputting a signal to the control circuit and in response to the signal, the control circuit is capable of changing a direction of the current flowing in the stator coil. Thus, the commutation control for the stator coil is performed by the induction coil and the conventional Hall sensor is eliminated.