Computer Science – Other Computer Science
Scientific paper
2008-09-29
Information Technology Journal, 7(6): 942-947, 2008
Computer Science
Other Computer Science
4 figures
Scientific paper
10.3923/itj.2008.942.947
The goal of this work is to minimize the energy dissipation of embedded controllers without jeopardizing the quality of control (QoC). Taking advantage of the dynamic voltage scaling (DVS) technology, this paper develops a performance-aware power management scheme for embedded controllers with processors that allow multiple voltage levels. The periods of control tasks are adapted online with respect to the current QoC, thus facilitating additional energy reduction over standard DVS. To avoid the waste of CPU resources as a result of the discrete voltage levels, a resource reclaiming mechanism is employed to maximize the CPU utilization and also to improve the QoC. Simulations are conducted to evaluate the performance of the proposed scheme. Compared with the optimal standard DVS scheme, the proposed scheme is shown to be able to save remarkably more energy while maintaining comparable QoC.
Dong Jinxiang
Liu Liping
Ma Longhua
Sun Youxian
Xia Feng
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