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. 25, 2013
Filed:
Jul. 07, 2010
Chien-sheng Lin, Taoyuan Hsien, TW;
Zong-hong Tang, Taoyuan Hsien, TW;
Wen-chuan MA, Taoyuan Hsien, TW;
Chien-Sheng Lin, Taoyuan Hsien, TW;
Zong-Hong Tang, Taoyuan Hsien, TW;
Wen-Chuan Ma, Taoyuan Hsien, TW;
Delta Electronics, Inc., Kuei San, Taoyuan Hsien, TW;
Abstract
A motor control apparatus includes a phase sensing circuit, current sensing circuit, phase lock loop, controller and driving circuit. The phase sensing circuit detects a phase switching state of a magnetic pole of a motor circuit, then generates and outputs a phase switching signal to the phase lock loop during motor operation. The current sensing circuit detects current flowing through a coil of the motor to generate and output a current phase signal to the phase lock loop. The phase lock loop compares a phase difference between the phase switching signal and the current phase signal to generate and output a phase-switch controlling signal to the controller. The controller generates and outputs a driving signal to the driving circuit in accordance with the phase-switch controlling signal. The driving circuit controls the phase switching state of the magnetic pole to drive the motor in accordance with the driving signal.