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Journal Article Coscheduling of Processor Voltage and Control Task Period for Energy-Efficient Control Systems
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Authors
Lee Hyung Sun, 김병국
Issue Date
201002
Source
ACM Transactions on Embedded Computing Systems, v.9 no.3, pp.1-24
ISSN
1539-9087
Publisher
ACM
DOI
https://dx.doi.org/10.1145/1698772.1698773
Project Code
08MC3800, Wearable Personal Companion for u-Computing Collaboration, Cho Il Yeon
Abstract
The Dynamic Voltage Scaling (DVS) technique has been widely studied for energy-constrained real-time systems; however, its application to control systems has not been studied in a variety of aspects. This article presents a novel method to simultaneously schedule processor voltage and control-task periods online, considering energy-efficiency of control systems as a whole. A new performance index is proposed, which contains both control performance and processor energy terms. Then, an online scheduler assigning processor voltage and control-task periods that maximizes the performance index is proposed. The performance of the proposed scheduler under varying control workload is verified using MATLAB simulations and experiments on an actual DVS hardware platform. © 2010 ACM.
KSP Keywords
Control performance, Control systems, Control task, Dynamic voltage scaling, Energy Efficiency, Energy efficient control, Hardware platform, Matlab Simulation, Online scheduler, energy-constrained, novel method