Annali di Matematica Pura ed Applicata

, Volume 163, Issue 1, pp 93–131 | Cite as

On the direct solution of Riccati equations arising in boundary control theory

  • Franco Flandoli
Article

Abstract

Two classes of Riccati equations arising in the boundary control of parabolic systems are studied by direct methods. The new feature with respect to previous works on this subject is the low regularity of the final data. The classes considered here generalize those of [7]and [5]on one side, and of [14]on the other one. Completely new methods are used to obtain the solution of the Riccati equations, in both cases. The central theme is the dependence of the solutions on a «symmetric» norm of the final data, yielding these new results as well as a new proof of existence for the related algebraic Riccati equation under more general assumptions. The synthesis of the associated linear-quadratic-regulator problems is easily solved using these results.

Keywords

Control Theory Final Data Riccati Equation General Assumption Central Theme 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    P. Acquistapace -F. Flandoli -B. Terreni,Initial boundary value problems and optimal control for non-autonomous parabolic systems, SIAM J. Control Optimiz.,29 (1991), pp. 89–118.Google Scholar
  2. [2]
    A. V.Balakrishnan,Boundary control of parabolic equations: L-Q-R theory, inTheory of Nonlinear Operators, Proc. Fifth Intern. Summer School, Berlin (1977).Google Scholar
  3. [3]
    A. V. Balakrishnan,On a class of Riccati equations in Hilbert space, Appl. Math. Optimiz.,7 (1981), pp. 159–174.Google Scholar
  4. [4]
    G. Da Prato,Quelques résultats d'existence, unicité et regularité pour un probleme de la théorie du contrôle, J. Math. Pures Appl.,52 (1973), pp. 353–375.Google Scholar
  5. [5]
    G. Da Prato -A. Ichikawa,Riccati equations with unbounded coefficients, Ann. Mat. Pura Appl.,140 (1985), pp. 209–221.Google Scholar
  6. [6]
    G. Da Prato -I. Lasiecka -R. Triggiani,A direct study of Riccati equations arising in boundary control problem for hyperbolic equations, J. Diff. Eqs.,64 (1986), pp. 26–47.Google Scholar
  7. [7]
    F. Flandoli,Riccati equation arising in a boundary control problem with distributed parameters, SIAM J. Control Optimiz.,22 (1984), pp. 76–86.Google Scholar
  8. [8]
    F. Flandoli,Algebraic Riccati equations arising in boundary control problems, SIAM J. Control Optimiz.,25 (1987), pp. 612–636.Google Scholar
  9. [9]
    F. Flandoli,A new proof of an a priori estimate arising in boundary control theory, Appl. Math. Letters,2, n. 4 (1989), pp. 341–343.Google Scholar
  10. [10]
    F. Flandoli,A counterexample in the boundary control of parabolic systems, Appl. Math. Letters,3, n. 2 (1990), pp. 47–50.Google Scholar
  11. [11]
    F. Flandoli -I. Lasiecka -R. Triggiani,Algebraic Riccati equation with non-smoothing observation arising in hyperbolic and Euler-Bernoulli equations, Ann. Mat. Pura Appl.,153 (1988), pp. 307–382.Google Scholar
  12. [12]
    J. L. Lions,Optimal Control of Systems Governed by Partial Differential Equations, Springer-Verlag, Berlin (1971).Google Scholar
  13. [13]
    J. L. Lions -E. Magenes,Non-Homogeneous Boundary Value Problems and Applications, Springer-Verlag, New York (1971).Google Scholar
  14. [14]
    I. Lasiecka -R. Triggiani,Dirichlet boundary control problem for parabolic equations with quadratic cost: analyticity and Riccati's feedback synthesis, SIAM J. Control Optimiz.,21 (1983), pp. 41–68.Google Scholar
  15. [15]
    A. Pazy,Semigroups of Linear Operators and Application to Partial Differential Equations, Springer-Verlag, New York (1983).Google Scholar
  16. [16]
    A. Pritchard -D. Solomon,The linear quadratic control problem for infinite dimensional systems with unbounded input and output operators, SIAM J. Control Optimiz.,25 (1987), pp. 121–144.Google Scholar
  17. [17]
    M.Sorine,Sur le semigroupe non lineaire associè a l'equation de Riccati, Rapport du CRMA no. 1055, Université de Montreal (1981).Google Scholar

Copyright information

© Fondazione Annali di Matematica Pura ed Applicata 1993

Authors and Affiliations

  • Franco Flandoli
    • 1
  1. 1.Scuola Normale SuperiorePisa

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