A passivity-based stability criterion for a class of interconnected systems and applications to biochemical reaction networks

Details A passivity-based stability criterion for a class of interconnected systems and applications to biochemical reaction networks A passivity-based stability criterion for a class of interconnected systems and applications to biochemical reaction networks

2007-05-22

arxiv.org/abs/0705.3188v1

Biology

Quantitative Biology

Quantitative Methods

See http://www.math.rutgers.edu/~sontag/PUBDIR/index.html for related (p)reprints

Scientific paper

This paper presents a stability test for a class of interconnected nonlinear systems motivated by biochemical reaction networks. One of the main results determines global asymptotic stability of the network from the diagonal stability of a "dissipativity matrix" which incorporates information about the passivity properties of the subsystems, the interconnection structure of the network, and the signs of the interconnection terms. This stability test encompasses the "secant criterion" for cyclic networks presented in our previous paper, and extends it to a general interconnection structure represented by a graph. A second main result allows one to accommodate state products. This extension makes the new stability criterion applicable to a broader class of models, even in the case of cyclic systems. The new stability test is illustrated on a mitogen activated protein kinase (MAPK) cascade model, and on a branched interconnection structure motivated by metabolic networks. Finally, another result addresses the robustness of stability in the presence of diffusion terms in a compartmental system made out of identical systems.

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