Delay compensated control of the Stefan problem and robustness to delay mismatch - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Robust and Nonlinear Control Année : 2020

Delay compensated control of the Stefan problem and robustness to delay mismatch

(1) , (2) , (1)
1
2

Résumé

This paper presents a control design for the one-phase Stefan problem under actuator delay via a backstepping method. The Stefan problem represents a liquid-solid phase change phenomenon which describes the time evolution of a material's temperature profile and the interface position. The actuator delay is modeled by a first-order hyperbolic partial differential equation (PDE), resulting in a cascaded transport-diffusion PDE system defined on a time-varying spatial domain described by an ordinary differential equation (ODE). Two nonlinear backstepping transformations are utilized for the control design. The setpoint restriction is given to guarantee a physical constraint on the proposed controller for the melting process. This constraint ensures the exponential convergence of the moving interface to a setpoint and the exponential stability of the temperature equilibrium profile and the delayed controller in the  1 norm. Furthermore, robustness analysis with respect to the delay mismatch between the plant and the controller is studied, which provides analogous results to the exact compensation by restricting the control gain.
Fichier principal
Vignette du fichier
DBP_J13.pdf (1.17 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02982645 , version 1 (28-10-2020)

Identifiants

Citer

Shumon Koga, Delphine Bresch-Pietri, Miroslav Krstic. Delay compensated control of the Stefan problem and robustness to delay mismatch. International Journal of Robust and Nonlinear Control, 2020, 30 (6), pp.2304-2334. ⟨10.1002/rnc.4909⟩. ⟨hal-02982645⟩
69 Consultations
49 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More