Boundary controllability of the finite-difference space semi-discretizations of the beam equation

Liliana León; Enrique Zuazua

ESAIM: Control, Optimisation and Calculus of Variations (2002)

  • Volume: 8, page 827-862
  • ISSN: 1292-8119

Abstract

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We propose a finite difference semi-discrete scheme for the approximation of the boundary exact controllability problem of the 1-D beam equation modelling the transversal vibrations of a beam with fixed ends. First of all we show that, due to the high frequency spurious oscillations, the uniform (with respect to the mesh-size) controllability property of the semi-discrete model fails in the natural functional setting. We then prove that there are two ways of restoring the uniform controllability property: a ) filtering the high frequencies, i . e . controlling projections on subspaces where the high frequencies have been filtered; b ) adding an extra boundary control to kill the spurious high frequency oscillations. In both cases the convergence of controls and controlled solutions is proved in weak and strong topologies, under suitable assumptions on the convergence of the initial data.

How to cite

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León, Liliana, and Zuazua, Enrique. "Boundary controllability of the finite-difference space semi-discretizations of the beam equation." ESAIM: Control, Optimisation and Calculus of Variations 8 (2002): 827-862. <http://eudml.org/doc/245824>.

@article{León2002,
abstract = {We propose a finite difference semi-discrete scheme for the approximation of the boundary exact controllability problem of the 1-D beam equation modelling the transversal vibrations of a beam with fixed ends. First of all we show that, due to the high frequency spurious oscillations, the uniform (with respect to the mesh-size) controllability property of the semi-discrete model fails in the natural functional setting. We then prove that there are two ways of restoring the uniform controllability property: $a)$ filtering the high frequencies, $i.e.$ controlling projections on subspaces where the high frequencies have been filtered; $b) $ adding an extra boundary control to kill the spurious high frequency oscillations. In both cases the convergence of controls and controlled solutions is proved in weak and strong topologies, under suitable assumptions on the convergence of the initial data.},
author = {León, Liliana, Zuazua, Enrique},
journal = {ESAIM: Control, Optimisation and Calculus of Variations},
keywords = {beam equation; finite difference semi-discretization; exact boundary controllability},
language = {eng},
pages = {827-862},
publisher = {EDP-Sciences},
title = {Boundary controllability of the finite-difference space semi-discretizations of the beam equation},
url = {http://eudml.org/doc/245824},
volume = {8},
year = {2002},
}

TY - JOUR
AU - León, Liliana
AU - Zuazua, Enrique
TI - Boundary controllability of the finite-difference space semi-discretizations of the beam equation
JO - ESAIM: Control, Optimisation and Calculus of Variations
PY - 2002
PB - EDP-Sciences
VL - 8
SP - 827
EP - 862
AB - We propose a finite difference semi-discrete scheme for the approximation of the boundary exact controllability problem of the 1-D beam equation modelling the transversal vibrations of a beam with fixed ends. First of all we show that, due to the high frequency spurious oscillations, the uniform (with respect to the mesh-size) controllability property of the semi-discrete model fails in the natural functional setting. We then prove that there are two ways of restoring the uniform controllability property: $a)$ filtering the high frequencies, $i.e.$ controlling projections on subspaces where the high frequencies have been filtered; $b) $ adding an extra boundary control to kill the spurious high frequency oscillations. In both cases the convergence of controls and controlled solutions is proved in weak and strong topologies, under suitable assumptions on the convergence of the initial data.
LA - eng
KW - beam equation; finite difference semi-discretization; exact boundary controllability
UR - http://eudml.org/doc/245824
ER -

References

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  1. [1] J. Ball and M. Slemrod, Nonharmonic Fourier series and the stabilization of distributed semi-linear control systems. Comm. Pure Appl. Math. 37 (1979) 555-587. Zbl0394.93041MR528632
  2. [2] E. Crépeau, Exact Controllability of the Boussinesq Equation on a Bounded Domain. Adv. Differential Equations (to appear). Zbl1161.93302MR1947955
  3. [3] A. Haraux, Séries lacunaires et contrôle semi-interne des vibrations d’une plaque rectangulaire. J. Math. Pures Appl. 68 (1989) 457-465. Zbl0685.93039
  4. [4] A.E. Ingham, Some trigonometrical inequalities with applications to the theory of series. Math. Z. 41 (1967) 367-379. Zbl0014.21503MR1545625
  5. [5] J.A. Infante and E. Zuazua, Boundary observability for the space semi-discretizations of the 1-d wave equation. Math. Model. Numer. Anal. 33 (1999) 407-438. Zbl0947.65101MR1700042
  6. [6] E. Isaacson and H.B. Keller, Analysis of numerical methods. John Wiley and Sons (1966). Zbl0168.13101MR201039
  7. [7] V. Komornik, Exact controllability and stabilization: The multiplier method. Masson and John Wiley, RAM 36 (1994). Zbl0937.93003MR1359765
  8. [8] G. Lebeau, Contrôle de l’ équation Schrödinger. J. Math. Pures Appl. 71 (1992) 267-291. Zbl0838.35013
  9. [9] L. León, Controle Exato da Equação da Viga 1-D Semi-discretizada no Espaço por Diferenças Finitas, Ph.D. Thesis. Instituto de Matemática, Universidade Federal de Rio de Janeiro (2001). 
  10. [10] J.L. Lions, Contrôlabilité exacte, stabilisation et perturbations de systèmes distribués, Tome 1. Masson, RMA 8, Paris (1988). Zbl0653.93002
  11. [11] J.L. Lions and E. Magenes, Problèmes aux limites non homogènes et applications, Vols. 1 and 2. Dunod, Paris (1968). Zbl0165.10801MR247243
  12. [12] S. Micu, Uniform Boundary Controllability of a Semi-Discrete 1-D Wave Equation. Numer. Math. (to appear). Zbl1002.65072MR1912914
  13. [13] S. Micu and E. Zuazua, Boundary controllability of a linear hybrid system arising in the control of noise. SIAM J. Control Optim. 35 (1997) 1614-1637. Zbl0888.35017MR1466919
  14. [14] J. Simon, Compact sets in the space L P ( 0 , T , B ) . Ann. Mat. Pura Appl. CXLVI (1987) 65-96. Zbl0629.46031MR916688
  15. [15] J.C. Strikwerda, Finite difference schemes and partial differential equation. Chapman and Hall (1995). Zbl1071.65118
  16. [16] J.W. Thomas, Numerical partial differential equations; finite difference methods. Springer, Texts Appl. Math. 22 (1995). Zbl0831.65087MR1367964
  17. [17] R.M. Young, An introduction to nonharmonic Fourier series. Academic Press, Pure Appl. Math. A Series of Monographs and Textbooks (1980). Zbl0493.42001MR591684
  18. [18] E. Zuazua, Boundary observability for the finite space semi-discretization of the 2-d wave equation in the square. J. Math. Pures Appl. 78 (1999) 523-563. Zbl0939.93016MR1697041
  19. [19] E. Zuazua, Contrôlabilité exacte en un temps arbitrairement petit de quelques modèles de plaques. Appendix I in [10] (1988) 465-491. 

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