Browsing by Subject "Mixing"

Now showing items 1-16 of 16

    • Article  

      Adaptive mixing control with multiple estimators 

      Baldi, S.; Ioannou, Petros A.; Kosmatopoulos, E. B. (2012)
      A recently proposed adaptive control scheme with mixing involves the use of precalculated candidate controllers whose output is weighted on the basis of the parameter estimates generated by an online parameter estimator. ...
    • Conference Object  

      The chromomagnetic operator on the lattice 

      Constantinou, Martha G.; Costa, M. G.; Frezzotti, R.; Lubicz, V.; Martinelli, G.; Meloni, D.; Panagopoulos, Haralambos G.; Simula, S. (Proceedings of Science (PoS), 2013)
      We study matrix elements of the "chromomagnetic" operator on the lattice. This operator is contained in the strangeness-changing effective Hamiltonian which describes electroweak effects in the Standard Model and beyond. ...
    • Conference Object  

      Discrete-time Adaptive Mixing Control with stability-preserving interpolation: The output regulation problem 

      Baldi, S.; Ioannou, Petros A.; Mosca, E. (2011)
      The main result of this paper is the extension of the Adaptive Mixing Control (AMC) approach, to the discrete-time setting. The stability and robustness properties of the adaptive mixing control scheme are analyzed. It is ...
    • Article  

      Issues and analysis of mixed semi-automated/manual traffic 1 

      Bose, A.; Ioannou, Petros A. (1998)
      The advance in research and development will make the deployment of automated vehicles a reality in the near future. At the initial stage, semi-automated vehicles with the capability to follow each other automatically in ...
    • Article  

      Large eddy simulation of thermocline flow phenomena and mixing during discharging of an initially homogeneous or stratified storage tank 

      Kaloudis, E.; Grigoriadis, D. G. E.; Papanicolaou, E.; Panidis, T. (2014)
      This study investigates numerically the flow phenomena developing in the discharging process of a rectangular water tank used for thermal energy storage and how these affect the thermal mixing and the associated energy ...
    • Article  

      Large eddy simulations of turbulent mixed convection in the charging of a rectangular thermal storage tank 

      Kaloudis, E.; Grigoriadis, D. G. E.; Papanicolaou, E.; Panidis, T. (2013)
      The Large Eddy Simulation (LES) approach is used to investigate numerically the mixed convection problem arising during the charging process of a rectangular water tank used for thermal energy storage. Two different charging ...
    • Article  

      Multiple model adaptive control with mixing 

      Kuipers, M.; Ioannou, Petros A. (2010)
      Despite the remarkable theoretical accomplishments and successful applications of adaptive control, the field is not sufficiently mature to solve challenging control problems where strict performance and robustness guarantees ...
    • Article  

      Multiple model adaptive mixing control: The discrete-time case 

      Baldi, S.; Ioannou, Petros A.; Mosca, E. (2012)
      Most of the work in multiple model adaptive control with various forms of switching focused on continuous-time systems. The purpose of this technical note is to extend the results of one approach, the adaptive mixing control ...
    • Article  

      Numerical simulations of constant-influx gravity currents in confined spaces: Application to thermal storage tanks 

      Kaloudis, E.; Grigoriadis, D. G. E.; Papanicolaou, E. (2016)
      This study uses Computational Fluid Dynamics (CFD) to investigate numerically the flow phenomena in the intrusion region of a thermal storage water tank during discharge. The early times of the discharging process have ...
    • Article  

      On weak dependence conditions: The case of discrete valued processes 

      Doukhan, P.; Fokianos, Konstantinos; Li, X. (2012)
      We investigate the relationship between weak dependence and mixing for discrete valued processes. We show that weak dependence implies mixing conditions under natural assumptions. The results specialize to the case of ...
    • Conference Object  

      Practical robust adaptive control: Benchmark example 

      Kuipers, M.; Ioannou, Petros A. (2008)
      A novel disturbance rejection solution for a benchmark mass-spring-damper (MSD) system is presented. The proposed design, adaptive mixing control (AMC,) is a deterministic multiple model adaptive control (MMAC) approach ...
    • Article  

      Renormalization and mixing in lattice QCD: The case of the chromomagnetic operator 

      Constantinou, Martha G.; Costa, M. G.; Frezzotti, R.; Lubicz, V.; Martinelli, G.; Meloni, D.; Panagopoulos, Haralambos G.; Simula, S. (2014)
      We study matrix elements of the "chromomagnetic" operator on the lattice. This operator is contained in the strangeness-changing effective Hamiltonian which describes electroweak effects in the Standard Model and beyond. ...
    • Conference Object  

      Robust adaptive multiple model controller design for an airbreathing hypersonic vehicle model 

      Kuipers, M.; Ioannou, Petros A.; Fidan, B.; Mirmirani, M. (2008)
      For airbreathing hypersonic flight vehicles (AHFVs), various uncertainties in addition to the coupling effects between the aerodynamics, propulsion, and structures result in a challenging control model. Capturing these ...
    • Conference Object  

      A scalable iterative convex design for nonlinear systems 

      Baldi, S.; Ioannou, Petros A.; Kosmatopoulos, E. B. (2012)
      A recently developed control scheme for approximately optimal control of nonlinear systems is the so-called Convex Control Design (ConvCD) methodology, that transforms the control problem of generic nonlinear systems into ...
    • Conference Object  

      Stability margins in adaptive mixing control via a Lyapunov-based switching criterion 

      Baldi, S.; Ioannou, Petros A. (2012)
      In all classes of linear adaptive control that involve switching or not there is no guarantee that after the switching stops or the adaptation is switched off the resulting closed loop linear time invariant system is stable ...
    • Article  

      Stability Margins in Adaptive Mixing Control Via a Lyapunov-Based Switching Criterion 

      Baldi, S.; Ioannou, Petros A. (2016)
      This paper proposes a Lyapunov-based switching logic within the framework of adaptive mixing control (AMC), where a weighted combination of a family of candidate controllers can be inserted in the loop to regulate the ...