Detection meeting control: Unstable steady states in high-dimensional nonlinear dynamical systems

Huanfei Ma, Daniel W. C. Ho, Ying-Cheng Lai, Wei Lin

Research output: Contribution to journalArticle

3 Citations (Scopus)


We articulate an adaptive and reference-free framework based on the principle of random switching to detect and control unstable steady states in high-dimensional nonlinear dynamical systems, without requiring any a priori information about the system or about the target steady state. Starting from an arbitrary initial condition, a proper control signal finds the nearest unstable steady state adaptively and drives the system to it in finite time, regardless of the type of the steady state. We develop a mathematical analysis based on fast-slow manifold separation and Markov chain theory to validate the framework. Numerical demonstration of the control and detection principle using both classic chaotic systems and models of biological and physical significance is provided.
Original languageEnglish
Article number042902
Number of pages9
JournalPhysical Review. E, Statistical, Nonlinear and Soft Matter Physics
Publication statusPublished - 2 Oct 2015


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