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:20260513T204643Z 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 (pH Seminar)\n\n\nAbstract\nOriginating in macroscopic me chanics\, port Hamiltonian formulations were proposed and intensively used for the modular modelling and control of conservative and dissipative mul tiphysics systems for which the thermal domain does not need to be explici tly represented. Yet in many cutting-edge engineering applications\, for e xample within the field of soft or micro-nano robotics\, process control\, material sciences\, energy production etc … temperature plays a central role and needs to be explicitly taken into account. This class of systems is referred to as Irreversible Thermodynamic systems. Several attempts ha ve been made to extend port Hamiltonian and Lagrangian formulations to Irr eversible Thermodynamic systems. Among them\, the Irreversible port Hamilt onian formulations\, which consider the entropy as additional state variab le\, are particularly promising for their simplicity\, their constructiven ess and the amount 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. conser vation of the internal energy and irreversible entropy creation. We then s how how the interconnection of two controlled lrreversible port Hamiltonia n Systems via thermal ports has to be state and co-state modulated in orde r to ensure the closed-loop lrreversible port Hamiltonian structure\, sati sfying the first and second laws of Thermodynamics. This modulation and cl osed loop invariants are then used to derive efficient controllers via ene rgy shaping and entropy assignment. In the second part of this talk we pre sent some recent extensions to boundary controlled distributed parameter s ystems defined on a 1D spatial domain and show\, on the heat equation exam ple\, how similar energy shaping and entropy assignment techniques can be used for control 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