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Robustness of periodic trajectories
KTH, Superseded Departments, Mathematics.
2002 (English)In: IEEE Transactions on Automatic Control, ISSN 0018-9286, E-ISSN 1558-2523, Vol. 47, no 11, 1842-1856 p.Article in journal (Refereed) Published
Abstract [en]

A robustness problem for periodic trajectories is considered in this paper. A nonautonomous system with a periodic solution is given. The problem is to decide whether a stable periodic solution remains in a neighborhood of the nominal periodic solution when, the dynamics of the system is perturbed. The case with a structured dynamic perturbation is considered. This makes the problem a nontrivial generalization of a classical problem in the theory of dynamical systems. A solution to the robustness problem will be obtained by using a variational system obtained by linearizing the system dynamics along a trajectory, which is uncertain but within the prespecified neighborhood of the nominal trajectory. This gives rise to robustness conditions that can be solved using integral quadratic constraints for linear time periodic systems.

Place, publisher, year, edition, pages
2002. Vol. 47, no 11, 1842-1856 p.
Keyword [en]
integral quadratic constraints (IQCs), periodic systems, robust, stability, constraints, stability, systems, motions, orbits, rotor
URN: urn:nbn:se:kth:diva-22045DOI: 10.1109/tac.2002.804480ISI: 000179218000005OAI: diva2:340743
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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