NDLI: Using Fuzzy Logic to reduce power consumption of notebooks

Content Provider	IEEE Xplore Digital Library
Author	Ying-Wen Bai Ciun-Hung Cheng
Copyright Year	2009
Description	Author affiliation: Department of Electrical Engineering, Fu Jen Catholic University, Taipei, Taiwan (Ying-Wen Bai; Ciun-Hung Cheng)
Abstract	The purpose of this research is to use an FLC (Fuzzy Logic Controller) to manage the power consumption of a notebook or an UMPC (Ultra Mobile PC). The FLC not only controls the LCD backlight and the speed of the fan to reduce the power consumption but also lengthens the battery recharge cycle. The EC (Embedded Controller) in a notebook is a device to assist the onboard power management system which consists of the cooling fan, the keyboard, the LCD backlight brightness and the battery recharging function. This research focuses on two parts: (1) an EC controlled by assembly language and (2) an FLC controlled by high-level language (VC++, Matlab). These two parts cooperate to control the backlight brightness and the speed of the cooling fan, by using the fuzzy control rule as a replacement the traditional method. The fan speed is controlled by the CPU to maintain a constant temperature. The LCD backlight brightness which is based on the keystroke frequency or the touchpad is adjusted by using the FLC.
Starting Page	488
Ending Page	492
File Size	474415
Page Count	5
File Format	PDF
ISBN	9781424429752
DOI	10.1109/ISCE.2009.5156815
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-25
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fuzzy logic Energy consumption Temperature control Brightness Energy management Cooling Control systems Battery management systems Power system management Keyboards Power Consumption Notebook Fuzzy Logic Controller Battery Life
Content Type	Text
Resource Type	Article

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