Titlebook: Control and Estimation of Distributed Parameter Systems; International Confer W. Desch,F. Kappel,K. Kunisch Conference proceedings 1998 Spr

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LQR Control of Shell Vibrations via Piezoceramic Actuators,osedness arid convergence of LQR gains using analytic semigroup results combined with LQR theory for unbounded input operators. Finally, numerical examples demonstrating the effectiveness of the method are presented.

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Conference proceedings 1998tial equations. Topics addressed include, but are not limited to - control and stability of hyperbolic systems related to elasticity, linear and nonlinear; - control and identification of nonlinear parabolic systems; - exact and approximate controllability, and observability; - Pontryagin‘s maximum

evanescent

Preconditioners for Karush-Kuhn-Tucker Matrices Arising in the Optimal Control of Distributed Systeg differential equation. The preconditioners have a block structure with blocks being composed of preconditioners for the subblocks of the system matrix .. The effectiveness of the preconditioners is analyzed and numerical examples for an elliptic model problem are shown.

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馬具

Androgen

On a Weakly Damped System Arising in the Control of Noise,ions. Each trajectory is proved to converge to an equilibrium as t → ∞. On the other hand we show that the convergence rate of the energy is not exponential. The proof of this result uses a perturbation argument allowing to modify the boundary conditions so that separation of variables applies.

高原

FLAX

Veronique Riedel,Oliver Schwedesased on a well-posed penalization procedure to approximate state constraints and then to study a parametric family of approximating problems. The final result estab- lishes necessary optimality conditions for the original state-constrained problem by passing to the limit from approximating problems under a proper constraint qualification.

intimate

Ausfallanalyse der Befragungsdaten,cond order condition are closely connected with stability estimates. Using the knowledge about stability estimates, it is shown that already for simple cases the usual sufficient conditions can not be fulfilled.