BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Yann Le Gorrec (FEMTO-ST\, Besançon) DTSTART:20240911T140000Z DTEND:20240911T150000Z DTSTAMP:20260423T023942Z UID:PHSeminar/7 DESCRIPTION:Title: Modelling\, interconnection and control of irreversible port Hamiltonian systems\nby Yann Le Gorrec (FEMTO-ST\, Besançon) as part of Port-Ham iltonian Seminar\n\n\nAbstract\nOriginating in macroscopic mechanics\, por t Hamiltonian formulations were proposed and intensively used for the modu lar modelling and control of conservative and dissipative multiphysics sys tems for which the thermal domain does not need to be explicitly represent ed. Yet in many cutting-edge engineering applications\, for example within the field of soft or micro-nano robotics\, process control\, material sci ences\, energy production etc … temperature plays a central role and nee ds to be explicitly taken into account. This class of systems is referred to as Irreversible Thermodynamic systems. Several attempts have been made to extend port Hamiltonian and Lagrangian formulations to Irreversible The rmodynamic systems. Among them\, the Irreversible port Hamiltonian formula tions\, which consider the entropy as additional state variable\, are part icularly promising for their simplicity\, their constructiveness and the a mount of information they can encode.\n\nIn the first part of this talk we recall some definitions and properties of finite dimensional Irreversible port Hamiltonian systems. We show how this structure allows to cope with the first and second principles of Thermodynamics i.e. conservation of the internal energy and irreversible entropy creation. We then show how the i nterconnection of two controlled lrreversible port Hamiltonian Systems via thermal ports has to be state and co-state modulated in order to ensure t he closed-loop lrreversible port Hamiltonian structure\, satisfying the fi rst and second laws of Thermodynamics. This modulation and closed loop inv ariants are then used to derive efficient controllers via energy shaping a nd entropy assignment. In the second part of this talk we present some rec ent extensions to boundary controlled distributed parameter systems define d on a 1D spatial domain and show\, on the heat equation example\, how sim ilar energy shaping and entropy assignment techniques can be used for cont rol design.\n\nThis talk is based on a joint work with Hector Ramirez and Bernhard Maschke.\n LOCATION:https://researchseminars.org/talk/PHSeminar/7/ END:VEVENT END:VCALENDAR