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:
Jul. 09, 2013
Filed:
Mar. 09, 2009
Hsiu-cheng Chang, Taipei, TW;
Hsiu-Cheng Chang, Taipei, TW;
Sea Sonic Electronics Co., Ltd., Taipei, TW;
Abstract
This invention provides a motor control method which comprises the steps of operating a motor at a fanless operation mode when a ambient temperature is lower than a lower temperature, operating the motor at a silent operation mode when the ambient temperature is higher than the lower temperature and lower than a higher temperature, and operating the motor at a cooling operation mode when the ambient temperature is higher than the higher temperature. When the motor operates at the fanless operation mode, the rotation speed of the motor is zero rpm. When the motor operates at the silent operation mode, the motor operates at a constant rotation speed. When the ambient temperature is higher than the higher temperature, the rotation speed of the motor is a linear function of the temperature and varies between the higher temperature and a maximum temperature corresponding to the full rotation speed of the motor.