학술논문

Control of chaotic behaviour and prevention of extinction using constant proportional feedback
Document Type
Article
Source
Nonlinear Analysis: Real World Applications. Dec2011, Vol. 12 Issue 6, p3719-3726. 8p.
Subject
*CHAOS theory
*MATHEMATICAL constants
*FEEDBACK control systems
*MATHEMATICAL mappings
*GLOBAL analysis (Mathematics)
*STABILITY (Mechanics)
*POPULATION dynamics
*ALLEE effect
Language
ISSN
1468-1218
Abstract
Abstract: We study a strategy to control the dynamics of one dimensional discrete maps known as the proportional feedback control method. We completely characterize the maps for which it is possible to stabilize the unstable or even chaotic dynamics towards an asymptotically stable equilibrium employing this method. Additionally, under conditions commonly assumed in modelling population dynamics, we show that the strategy drives the system to the optimal situation from a practical point of view, that is, to a global stable equilibrium since in that case the basin of attraction covers all the possible initial conditions. We also show that in some situations the strategy can be used to prevent the extinction of the population when controlling some models with the Allee effect. [Copyright &y& Elsevier]