Optimal and adaptive battery discharge strategies for Cyber-Physical Systems
Fumin Zhang, Zhenwu Shi · 2009
We introduce a dynamic battery model that describes the variations of the capacity of a battery under time varying discharge current. This model is input-output equivalent to the Rakhmatov-Vrudhula-Wallach (RVW) model that has been verified by experimental data. Our model allows battery capacity prediction for feedback control laws and online scheduling algorithms that are building blocks for cyber-physical systems (CPS) theory. We design optimal and adaptive discharge profile for a square wave impulsive current to achieve maximum battery life. Simulation results are provided to compare battery life for different discharge profiles.