Controlling chaos in a satellite power supply subsystem

E. E.N. Macau; L. F. Ramos Turci; T. Yoneyama

doi:10.1140/epjst/e2008-00865-9

EPJ

Controlling chaos in a satellite power supply subsystem

E. E.N. Macau¹, L. F. Ramos Turci² and T. Yoneyama²

¹ Instituto Nacional de Pesquisas Espaciais – INPE, 1503., São Paulo, SP, Brazil
² Instituto Tecnológico de Aeronáutica – ITA, São José dos Campos, SP, Brazil

Abstract

In this work, we show that chaos control techniques can be used to increase the region that can be efficiently used to supply the power requests for an artificial satellite. The core of a satellite power subsystem relies on its DC/DC converter. This is a very nonlinear system that presents a multitude of phenomena ranging from bifurcations, quasi-periodicity, chaos, coexistence of attractors, among others. The traditional power subsystem design techniques try to avoid these nonlinear phenomena so that it is possible to use linear system theory in small regions about the equilibrium points. Here, we show that chaos control can be used to efficiently extend the applicability region of the satellite power subsystem when it operates in regions of high nonlinearity.