A Voltage Control Algorithm for Multiprocessor System Based on the Lithium Battery Discharge Characteristics

摘要

The more and more extensive application of multiprocessor system to mobile devices has been achieved. The battery-aware voltage scaling algorithm for multiprocessor system was addressed in order to minimize the battery capacity consumption. The proposed algorithm generated task schedule by task assignment, discharge judgment and slack allocation. Based on the characteristic that the battery discharge could be divided into linear discharge and nonlinear discharge two phases, the slack was distributed by different manners during different discharge phases. The simulation results show that battery capacity consumption for the algorithm has relations with battery nonlinearity.