Blar i NTNU Open på forfatter "Di Meglio, Florent"
-
A distributed parameter systems view of control problems in drilling
Di Meglio, Florent; Aarsnes, Ulf Jakob Flø (Journal article; Peer reviewed, 2015)We give a detailed view of estimation and control problems raised by the drilling process where the distributed nature of the system cannot be ignored. In particular, we focus on the transport phenomena in Managed Pressure ... -
A simplified two-phase flow model using a quasi-equilibrium momentum balance
Aarsnes, Ulf Jakob Flø; Ambrus, Adrian; Di Meglio, Florent; Vajargah, Ali Karimi; Aamo, Ole Morten; van Oort, Eric (Journal article; Peer reviewed, 2016)We propose a simple model of two-phase gas–liquid flow by imposing a quasi-equilibrium on the mixture momentum balance of the classical transient drift-flux model. This reduces the model to a single hyperbolic PDE, describing ... -
An adaptive observer for hyperbolic systems with application to UnderBalanced Drilling
Di Meglio, Florent; Bresch-Pietri, Delphine; Aarsnes, Ulf Jakob Flø (Journal article; Peer reviewed, 2014)We present an adaptive observer design for a first-order hyperbolic system of Partial Differential Equations with uncertain boundary parameters. The design relies on boundary measurements only, and is based on a backstepping ...