Stabilization of linear time-varying systems

Anderson, Brian D.O.; Ilchmann, Achim GND; Wirth, Fabian R. GND

For linear time-varying systems with bounded system matrices we discuss the problem of stabilizability by linear state feedback. It is shown that an optimal control approach yields a criterion in terms of the cost for stabilizability. The constants appearing in the criterion of optimality allow for the distinction of exponential and uniform exponential stabilizability. We show that the system is completely controllable if, and only if, the Lyapunov exponent is arbitrarily assignable by a suitable feedback. For uniform exponential stabilizability and the assignability of the Bohl exponent this property is known. Also, dynamic feedback does not provide more freedom to address the stabilization problem.

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Anderson, Brian D.O. / Ilchmann, Achim / Wirth, Fabian R.: Stabilization of linear time-varying systems. 2012.

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