Braverman E, Chan B
Department of Mathematics and Statistics, University of Calgary, 2500 University Drive N.W., Calgary AB T2N 1N4, Canada.
Chaos. 2014 Mar;24(1):013119. doi: 10.1063/1.4865231.
Investigating a method of chaos control for one-dimensional maps, where the intervention is proportional to the difference between a fixed value and a current state, we demonstrate that stabilization is possible in one of the two following cases: (1) for small values, the map is increasing and the slope of the line connecting the points on the line with the origin is decreasing; (2) the chaotic map is locally Lipschitz. Moreover, in the latter case we prove that any point of the map can be stabilized. In addition, we study pulse stabilization when the intervention occurs each m-th step and illustrate that stabilization is possible for the first type of maps. In the context of population dynamics, we notice that control with a positive target, even if stabilization is not achieved, leads to persistent solutions and prevents extinction in models which experience the Allee effect.
在研究一种针对一维映射的混沌控制方法时,其中干预与固定值和当前状态之间的差异成比例,我们证明在以下两种情况之一中实现稳定是可能的:(1) 对于较小的值,映射是递增的,并且连接直线上的点与原点的直线斜率是递减的;(2) 混沌映射是局部利普希茨的。此外,在后一种情况下,我们证明映射的任何点都可以被稳定。另外,我们研究当干预每第(m)步发生时的脉冲稳定,并说明对于第一种类型的映射实现稳定是可能的。在种群动力学的背景下,我们注意到即使未实现稳定,以正目标进行控制也会导致持久解,并防止在经历阿利效应的模型中灭绝。