Listar por autor "González Varela, Francisco Javier"

Mostrando ítems 21-30 de 30

    • Non-intrusive parallelization of multibody system dynamic simulations 

      González Varela, Francisco Javier; Lugrís-Armesto, Urbano; Luaces, Alberto; González Castro, Manuel Jesús (Springer, 2009)
      [Abstract] This paper evaluates two non-intrusive parallelization techniques for multibody system dynamics: parallel sparse linear equation solvers and OpenMP. Both techniques can be applied to existing simulation software ...

    • Numerical and experimental investigation on the synthesis of extended Kalman filters for cable-driven parallel robots modeled through DAEs 

      Bettega, Jason; Boschetti, Giovanni; Rodríguez Frade, Borja; González Varela, Francisco Javier; Piva, Giulio; Richiedei, Dario; Trevisani, Alberto (2023-10-09)
      [Abstract] Cable-driven parallel robots are parallel robots where light-weight cables replace rigid bodies to move an end-effector. Their peculiar design allows obtaining large workspaces, high dynamic handlings, ease of ...

    • On the Cosimulation of Multibody Systems and Hydraulic Dynamics 

      Rahikainen, Jarkko; González Varela, Francisco Javier; Naya, Miguel A.; Sopanen, Jussi (Springer, 2020-02)
      [Abstract] The simulation of mechanical devices using multibody system dynamics (MBS) algorithms frequently requires the consideration of their interaction with components of a different physical nature, such as electronics, ...

    • On the effect of linear algebra implementations in real-time multibody system dynamics 

      González Varela, Francisco Javier; Dopico, Daniel; González Castro, Manuel Jesús; Luaces, Alberto (Springer, 2007)
      [Abstract] This paper compares the efficiency of multibody system (MBS) dynamic simulation codes that rely on different implementations of linear algebra operations. The dynamics of an N-loop four-bar mechanism has been ...

    • On the Effect of Multirate Co-simulation Techniques in the Efficiency and Accuracy of Multibody System Dynamics 

      González Varela, Francisco Javier; Naya, Miguel A.; González Castro, Manuel Jesús; Luaces, Alberto (Springer, 2010)
      [Abstract] Dynamic simulation of complex mechatronic systems can be carried out in an efficient and modular way making use of weakly coupled co-simulation setups. When using this approach, multirate methods are often ...

    • Performance indicators for wheeled robots traversing obstacles 

      Nowac, William; González Varela, Francisco Javier; MacMahon, Sadhbh; Kövecses, József (2020-04)
      [Abstract] An important element of wheeled robot operations on uneven and unstructured terrain is the ability to overcome obstacles. In this letter, we deal with a part of this obstacle negotiation problem. We particularly ...

    • Real-time Simulation of Cable Pay-Out and Reel-In with Towed Fishing Gears 

      González Varela, Francisco Javier; Luaces, Alberto; González, Manuel; Prada, Amelia de la (Elsevier, 2017-02)
      [Abstract] Achieving real-time simulation of fast cable pay-out and reel-in manoeuvres with towed fishing gears is a challenging task. This work presents two new simulation methods based on simplified cable models for ...

    • Thermal Parameter and State Estimation for Digital Twins of E-Powertrain Components 

      Rodríguez Frade, Borja; Sanjurjo, Emilio; Tranchero, Mauricio; Romano, Claudio; González Varela, Francisco Javier (IEEEAccess, 2021-07)
      [Abstract] The performance of powertrain components in electric vehicles is tightly intertwined with their thermal behavior. In practical applications, their temperature must be monitored and kept below certain thresholds ...

    • Use of Penalty Formulations in Dynamic Simulation and Analysis of Redundantly Constrained Multibody Systems 

      González Varela, Francisco Javier; Kövecses, József (Springer, 2013)
      [Abstract] The determination of particular reaction forces in the analysis of redundantly constrained multibody systems requires the consideration of the stiffness distribution in the system. This can be achieved by ...

    • Use of performance indicators in the analysis of running gait impacts 

      Pàmies-Vilà, Rosa; González Varela, Francisco Javier; Kövecses, József; Font-Llagunes, Josep M. (2018)
      [Summary] Foot-ground impact is a critical event during the running cycle. In this work, three performance indicators were used to characterize foot-ground impact intensity: the effective preimpact kinetic energy, ...