A criterion for the stability of motion of nonlinear system |
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Authors: | Zhao Jun-san |
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Institution: | Northwestern Polyteclmical University, Xi’an |
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Abstract: | As to an autonomous nonlinear system, the stability of the equilibrium state in a sufficiently small neighborhood of the equilibrium
state can be determined by eigenvalues of the linear part of the nonlinear system provided that the eigenvalues are not in
a critical case. Many methods may be used to detect the stability for a linear system. A lot of researches for determining
the stability of a nonlinear system are completed by mathematicians and mechanicians but most of them are methods for the
special forms of nonlinear systems. Till now, none of these methods can be conveniently applied to all nonlinear systems.
The method introduced by this paper gives the necessary and sufficient conditions of the stability of a nonlinear system.
The familiar Krasovski's method is a special case of this method. |
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Keywords: | |
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