Stability verification for monotone systems using homotopy algorithms

Details Stability verification for monotone systems using homotopy algorithms Stability verification for monotone systems using homotopy algorithms

2010-05-05

arxiv.org/abs/1005.0741v1

Mathematics

Numerical Analysis

Scientific paper

A monotone self-mapping of the nonnegative orthant induces a monotone discrete-time dynamical system which evolves on the same orthant. If with respect to this system the origin is attractive then there must exists points whose image under the monotone map is strictly smaller than the original point, in the component-wise partial ordering. Here it is shown how such points can be found numerically, leading to a recipe to compute order intervals that are contained in the region of attraction and where the monotone map acts essentially as a contraction. An important application is the numerical verification of so-called generalized small-gain conditions that appear in the stability theory of large-scale systems.

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