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arXiv · 1911.01481

Sliding mode control for a generalization of the Caginalp phase-field system

Pierluigi Colli·Davide Manini
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Abstract

In the present paper, we present and solve the sliding mode control (SMC) problem for a second-order generalization of the Caginalp phase-field system. This generalization, inspired by the theories developed by Green and Naghdi on one side, and Podio-Guidugli on the other, deals with the concept of thermal displacement, i.e., a primitive with respect to the time of the temperature. Two control laws are considered: the former forces the solution to reach a sliding manifold described by a linear constraint between the temperature and the phase variable; the latter forces the phase variable to reach a prescribed distribution $\varphi^*$. We prove existence, uniqueness as well as continuous dependence of the solutions for both problems; two regularity results are also given. We also prove that, under suitable conditions, the solutions reach the sliding manifold within finite time.

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Pierluigi Colli, Davide Manini. 2019-11-04. Sliding mode control for a generalization of the Caginalp phase-field system. https://doi.org/10.1007/s00245-020-09682-3

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