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LaSalle's invariance principle (also known as the invariance principle, Barbashin-Krasovskii-LaSalle principle, or Krasovskii-LaSalle principle ) is a criterion for the asymptotic stability of an autonomous (possibly nonlinear) dynamical system. == Global version == Given a representation of the system : for all (negative semidefinite) Let be the union of complete trajectories contained entirely in the set . Then the set of accumulation points of any trajectory is contained in . If we additionally have that the function is positive definite, i.e. : , for all : and if contains no trajectory of the system except the trivial trajectory for , then the origin is asymptotically stable. Furthermore, if is radially unbounded, i.e. : , as then the origin is globally asymptotically stable. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「LaSalle's invariance principle」の詳細全文を読む スポンサード リンク
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