Optimal and adaptive battery discharge strategies for Cyber-Physical Systems

Author

Zhang, Fumin ; Shi, Zhenwu

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Savannah, GA, USA

fYear

2009

fDate

15-18 Dec. 2009

Firstpage

6232

Lastpage

6237

Abstract

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.

Keywords

adaptive control; discharges (electric); feedback; optimal control; scheduling; secondary cells; Rakhmatov-Vrudhula-Wallach model; adaptive battery discharge strategy; adaptive discharge profile; battery capacity prediction; cyber-physical systems; dynamic battery model; feedback control laws; online scheduling algorithm; optimal discharge profile; square wave impulsive current; time varying discharge current; Analytical models; Batteries; Computational modeling; Dynamic voltage scaling; Electrodes; Energy management; Feedback control; Mobile computing; Predictive models; Scheduling algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on

Conference_Location

Shanghai

ISSN

0191-2216

Print_ISBN

978-1-4244-3871-6

Electronic_ISBN

0191-2216

Type

conf

DOI

10.1109/CDC.2009.5400561

Filename

5400561