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A Condition for Almost Global Stability and Local Asymptotical Stability of Nonlinear System

机译:几乎全球稳定性和非线性系统局部渐近稳定性的条件

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For nonlinear autonomous systems with the origin as a fixed point, the existence of a density function with its time derivative greater than zero implies almost global stability and local asymptotical stability, which is convenient for verification. Further, if the divergence at the origin is less than zero, the existence of a density function with its time derivative greater than zero is both necessary and sufficient condition for almost global stability and local asymptotical stability. Examples illustrate the validity of the results.
机译:对于具有固定点的非线性自治系统,其时间衍生物大于零的密度函数的存在意味着几乎是全局稳定性和局部渐近稳定性,这方便验证。此外,如果原点的发散小于零,则具有大于零的时间衍生物的密度函数的存在是必要的,并且对于几乎全局稳定性和局部渐近稳定性。示例说明了结果的有效性。

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