We solve the feedback stabilization problem for a tank, with friction, containing a liquid modeled by the viscous Saint-Venant system of Partial Differential Equations. A spill-free exponential stabilization is achieved, with robustness to the wall friction forces. A Control Lyapunov Functional (CLF) methodology with two different Lyapunov functionals is employed. These functionals determine specific parameterized sets which approximate the state space. The feedback law is designed based only on one of the two functionals (which is the CLF) while the other functional is used for the derivation of estimates of the sup-norm of the velocity. The feedback law does not require the knowledge of the exact relation of the friction coefficient. Two main results are provided: the first deals with the special case of a velocity-independent friction coefficient, while the second deals with the general case. The obtained results are new even in the frictionless case.
Keywords: Saint-Venant model, shallow water equations, feedback stabilization, Control Lyapunov Functional, PDEs
@article{COCV_2022__28_1_A81_0,
author = {Karafyllis, Iasson and Vokos, Filippos and Krstic, Miroslav},
title = {Feedback {Stabilization} of {Tank-Liquid} {System} with {Robustness} to {Wall} {Friction}},
journal = {ESAIM: Control, Optimisation and Calculus of Variations},
year = {2022},
publisher = {EDP-Sciences},
volume = {28},
doi = {10.1051/cocv/2022076},
mrnumber = {4525178},
zbl = {1506.35163},
language = {en},
url = {https://www.numdam.org/articles/10.1051/cocv/2022076/}
}
TY - JOUR AU - Karafyllis, Iasson AU - Vokos, Filippos AU - Krstic, Miroslav TI - Feedback Stabilization of Tank-Liquid System with Robustness to Wall Friction JO - ESAIM: Control, Optimisation and Calculus of Variations PY - 2022 VL - 28 PB - EDP-Sciences UR - https://www.numdam.org/articles/10.1051/cocv/2022076/ DO - 10.1051/cocv/2022076 LA - en ID - COCV_2022__28_1_A81_0 ER -
%0 Journal Article %A Karafyllis, Iasson %A Vokos, Filippos %A Krstic, Miroslav %T Feedback Stabilization of Tank-Liquid System with Robustness to Wall Friction %J ESAIM: Control, Optimisation and Calculus of Variations %D 2022 %V 28 %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/cocv/2022076/ %R 10.1051/cocv/2022076 %G en %F COCV_2022__28_1_A81_0
Karafyllis, Iasson; Vokos, Filippos; Krstic, Miroslav. Feedback Stabilization of Tank-Liquid System with Robustness to Wall Friction. ESAIM: Control, Optimisation and Calculus of Variations, Tome 28 (2022), article no. 81. doi: 10.1051/cocv/2022076
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