arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.0142nlin.CD
收藏

几何定义的局部结构变化对混沌Hamilton系统的控制作用

Controlling Effect of Geometrically Defined Local Structural Changes on Chaotic Hamiltonian Systems

Yossi Ben Zion, Lawrence Horwitz

摘要:

通过定义共形度规,将混沌保守哈密顿系统的一个有效特征--由哈密顿量结构导出的黎曼度规张量的曲率,推广到标准形式的一类势模型.测地线方程通过切空间中的逆映射再现了原势模型的Hamilton方程。在这个空间中的测地线偏差的第二协变导数产生一个动力学曲率,导致(能量依赖)标准不稳定行为不同于通常的李雅普诺夫准则。我们在这里表明,这个标准可以建设性地用于修改本地的潜在的混沌哈密顿模型,以这样一种方式,实现稳定的运动。由于我们的不稳定性判据是局部的坐标空间,这些结果提供了一个新的和最小的方法实现控制的混沌系统。

英文摘要:

An effective characterization of chaotic conservative Hamiltonian systems in terms of the curvature associated with a Riemannian metric tensor derived from the structure of the Hamiltonian has been extended to a wide class of potential models of standard form through definition of a conformal metric. The geodesic equations reproduce the Hamilton equations of the original potential model through an inverse map in the tangent space. The second covariant derivative of the geodesic deviation in this space generates a dynamical curvature, resulting in (energy dependent) criteria for unstable behavior different from the usual Lyapunov criteria. We show here that this criterion can be constructively used to modify locally the potential of a chaotic Hamiltonian model in such a way that stable motion is achieved. Since our criterion for instability is local in coordinate space, these results provide a new and minimal method for achieving control of a chaotic system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑