Dynamics of Time-Varying Discrete-Time Linear Systems: Spectral Theory and the Projected System

Authors:
Fabian Wirth
Affiliations:
-
Venue:
SIAM Journal on Control and Optimization
Year:
1998

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Abstract

We study structural properties of linear time-varying discrete-time systems. At first an associated system on projective space is introduced as a basic tool to understand the linear dynamics. We study controllability properties of this system and characterize in particular the control sets and their cores. Sufficient conditions for an upper bound on the number of control sets with nonempty interior are given. Furthermore, exponential growth rates of the linear system are studied. Using finite-time controllability properties in the cores of control sets the Floquet spectrum of the linear system may be described. In particular, the closure of the Floquet spectrum is contained in the Lyapunov spectrum.