Design issues for dynamic voltage scaling
ISLPED '00 Proceedings of the 2000 international symposium on Low power electronics and design
DRPM: dynamic speed control for power management in server class disks
Proceedings of the 30th annual international symposium on Computer architecture
Practical PACE for embedded systems
Proceedings of the 4th ACM international conference on Embedded software
Optimal control of switching systems
Automatica (Journal of IFAC)
Energy management using buffer memory for streaming data
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Low-Power Buffer Management for Streaming Data
IEEE Transactions on Circuits and Systems for Video Technology
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This paper studies a dynamic buffer management problem with one buffer inserted between two interacting components. The component to be controlled is assumed to have multiple power modes corresponding to different data processing rates. The overall system is modeled as a hybrid system and the buffer management problem is formulated as an optimal control problem. Different from many previous studies, the objective function of the proposed problem depends on the switching cost and the size of the continuous state space, making its solution much more challenging. By exploiting some particular features of the problem, the best mode sequence and the optimal switching instants are characterized analytically using a variational approach. Simulation results based on real data shows that the proposed method can significantly reduce the energy consumption compared with another heuristic scheme in several typical situations.