High gain control of Stochastic Differential Equations

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Mai 2010



This work tries to address the problem of assessing the long term dynamics of control systems described by linear, stochastic, differential equations upon application of high gain, proportional, output feedback. Stability of such stochastic systems is characterized by moment exponents and rotation numbers. We present two analytical techniques to determine mean or else almost sure stability and rotation in state space. The first is projection onto the unit sphere, derivation of the associated Fokker-Planck equation on projective space and finally computation of mean exponents and rotation numbers, the stochastic equivalents of the real and imaginary parts of eigenvalues, by using ergodic arguments that allow passing from time to space averages. The second is an expansion technique based on a perturbation analysis of the generator that defines the diffusion. As an alternative or compliment to mean stability we discuss furthermore second mean stabilization and a linear algebraic technique with roots in control theory for calculating second mean exponents.


Iakovos Matsikis was born on Thessaloniki Greece on the 1st July 1974. He graduated from Aristotle's University of Thessaloniki with a degree on applied mathematics. He then moved on to Exeter University in the U.K where he completed his Ph.D. on control of stochastic systems.
EAN: 9783838366531
ISBN: 3838366530
Untertitel: Analytical and Numerical methods for the calculation of moment exponents and rotation numbers. Paperback. Sprache: Englisch.
Verlag: LAP Lambert Acad. Publ.
Erscheinungsdatum: Mai 2010
Seitenanzahl: 156 Seiten
Format: kartoniert
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