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Stability Analysis of Non-Polynomial Systems Based on Polynomial Approximation of Functions

机译:基于函数多项式近似的非多项式系统的稳定性分析

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A computational methodology of estimating the domain of attraction (DA) for descriptor non-polynomial systems are addressed in this paper. For an existing technique of approximating a non-polynomial function by a truncated Taylor expansion and the worst-case remainders, a further investigation is given on the existence of upper and lower polynomial bounds of the non-polynomial function, In formulation of the DA analysis conditions, an implicit form is utilized for dealing with the descriptor systems in polynomial fashion and leads to a stability condition of a scalar polynomial. Apart from the scalar condition, a matrix polynomial condition using an annihilator is also proposed, which admits expanding the DA. Numerical examples show these DA analysis methods.
机译:本文解决了估计描述符非多项式系统的吸引力(DA)域的计算方法。对于通过截短的泰勒膨胀和最坏情况仍然近似非多项式函数的现有技术,在DA分析的制剂中,给出了进一步的研究非多项式功能的上下多项式的存在条件,隐式形式用于处理多项式时尚的描述符系统,并导致标量多项式的稳定性条件。除了标量条件外,还提出了使用湮灭器的矩阵多项式条件,这承认扩展DA。数值示例显示了这些DA分析方法。

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