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Lyapunov function as potential function:A dynamical equivalence |
Yuan Ruo-Shi (袁若石)a b, Ma Yi-An (马易安)c, Yuan Bo (苑波)d, Ao Ping (敖平)b e |
a School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; b Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, China; c Department of Applied Mathematics, University of Washington, Seattle 98195, USA; d Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; e Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China |
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Abstract For a physical system, regardless of time reversal symmetry, a potential function serves also as a Lyapunov function, providing convergence and stability information. In this paper, the converse is constructively proved that any dynamics with a Lyapunov function has a corresponding physical realization: a friction force, a Lorentz force, and a potential function. Such construction establishes a set of equations with physical meaning for Lyapunov function and suggests new approaches on the significant unsolved problem namely to construct Lyapunov functions for general nonlinear systems. In addition, a connection is found that the Lyapunov equation is a reduced form of a generalized Einstein relation for linear systems, revealing further insights of the construction.
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Received: 20 March 2013
Revised: 16 May 2013
Accepted manuscript online:
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PACS:
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05.45.-a
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(Nonlinear dynamics and chaos)
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05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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89.75.-k
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(Complex systems)
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Fund: Project supported by the National Basic Research Program of China (Grant No. 2010CB529200) and the National Natural Science Foundation of China (Grant Nos. 61073087 and 91029738). |
Corresponding Authors:
Yuan Ruo-Shi
E-mail: yrs12345@sjtu.edu.cn
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Cite this article:
Yuan Ruo-Shi (袁若石), Ma Yi-An (马易安), Yuan Bo (苑波), Ao Ping (敖平) Lyapunov function as potential function:A dynamical equivalence 2014 Chin. Phys. B 23 010505
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