Stability of Planar Nonlinear Switched Systems

Details Stability of Planar Nonlinear Switched Systems Stability of Planar Nonlinear Switched Systems

2005-02-16

arxiv.org/abs/math/0502361v1

Mathematics

Optimization and Control

Scientific paper

We consider the time-dependent nonlinear system $\dot q(t)=u(t)X(q(t))+(1-u(t))Y(q(t))$, where $q\in\R^2$, $X$ and $Y$ are two %$C^\infty$ smooth vector fields, globally asymptotically stable at the origin and $u:[0,\infty)\to\{0,1\}$ is an arbitrary measurable function. Analysing the topology of the set where $X$ and $Y$ are parallel, we give some sufficient and some necessary conditions for global asymptotic stability, uniform with respect to $u(.)$. Such conditions can be verified without any integration or construction of a Lyapunov function, and they are robust under small perturbations of the vector fields.

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