On well-posedness, regularity and exact controllability for problems of transmission of plate equation with variable coefficients

Guo, Bao-Zhu; Shao, Zhi-Chao

doi:10.1090/S0033-569X-07-01069-9

Authors: Bao-Zhu Guo and Zhi-Chao Shao
Journal: Quart. Appl. Math. 65 (2007), 705-736
MSC (2000): Primary 35L35, 93C20, 93D15, 93B05, 93B07
DOI: https://doi.org/10.1090/S0033-569X-07-01069-9
Published electronically: October 5, 2007
MathSciNet review: 2370357
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Abstract: A system of transmission of Euler-Bernoulli plate equation with variable coefficients under Neumann control and collocated observation is studied. Using the multiplier method on a Riemannian manifold, it is shown that the system is well-posed in the sense of D. Salamon. This establishes the equivalence between the exact controllability of an open-loop system and the exponential stability of a closed-loop system under the proportional output feedback. The regularity of the system in the sense of G. Weiss is also proved, and the feedthrough operator is found to be zero. These properties make this PDE system parallel in many ways to the finite-dimensional ones. Finally, the exact controllability of an open-loop system is developed under a uniqueness assumption by establishing the observability inequality for the dual system.

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