Singular controls and chattering arcs in optimal control problems arising in biomedicine

• Autorzy: Ledzewicz U. , Schattler H.
• Języki publikacji: EN

Abstrakty

EN

We consider an optimal control problem of the Mayer-type for a single-input, control affine, nonlinear system in small dimension. In this paper, we analyze effects that a modeling extension has on the optimality of singular controls when the control is replaced with the output of a first-order, time-invariant linear system driven by a new control. This analysis is motivated by an optimal control problem for a novel cancer treatment method, tumor anti-angiogenesis, when such a linear differential equation, which represents the pharmacokinetics of the therapeutic agent, is added to the model. We show that formulas that define a singular control of order 1 and its associated singular arc carry over verbatim under this model extension, albeit with a different interpretation. But the intrinsic order of the singular control increases to 2. As a, consequence, optimal concatenation sequences with the singular control change and the possibility of optimal chattering arcs arises.

Słowa kluczowe

EN

optimal control; singular controls; biomedical models; anti-angiogenesis

• Wydawca: Systems Research Institute, Polish Academy of Sciences
• Czasopismo: Control and Cybernetics
• Rocznik: 2009
• Tom: Vol. 38, no 4B
• Strony: 1501--1523
• Opis fizyczny: Bibliogr. 53 poz., wykr.

Twórcy

autor

Ledzewicz U.

autor

Schattler H.

• Department of Mathematics and Statistics, Southern Illinois University Edwardsville, Edwardsville, Illinois, 62026-1653, USA,

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