• Desarrollo de Tecnologías del Habla en Costa Rica 

      Coto Jiménez, Marvin (2020)
      Las tecnologías del habla son un conjunto de conocimientos, técnicas y recursos empleados para propiciar la interacción de las personas con dispositivos electrónicos, o bien entre personas con mediación de un dispositivo. ...
    • Fractional order model identification: Computational optimization 

      Guevara Betancourt, Edder; Meneses Navarro, Helber; Arrieta Orozco, Orlando; Vilanova Arbós, Ramón; Visioli, Antonio; Padula, Fabrizio (2015-10-26)
      This paper deals with the identification of fractional models with one fractional parameter. This kind of models are capable to represent an extensive range of dynamics, including overdamped and oscillatory behaviors. The ...
    • I-PD controller as an structural alternative to servo/regulation tradeoff tuning 

      Vilanova Arbós, Ramón; Arrieta Orozco, Orlando; González Apellániz, Roberto; Garrido, Xabier G. (2018)
      One of the recurrent topics in the PI/PID literature of recent years is the incorporation of the tradeoff between the two possible modes of closed-loop operation: servo and regulation. Tuning rules are usually provided as ...
    • Improvement of the Control System Performance based on Fractional-Order PID Controllers and Models with Robustness Considerations 

      Meneses Navarro, Helber; Guevara Betancourt, Edder; Arrieta Orozco, Orlando; Padula, Fabrizio; Vilanova Arbós, Ramón; Visioli, Antonio (2018)
      In this paper we assess the performance improvement achievable by using onedegree-of-freedom fractional-order proportional-integral-derivative controllers (FOPI/FOPID) instead of their integer-order counterparts (PI/PID). ...
    • Multi-objective optimal tuning of two degrees of freedom PID controllers using the ENNC method 

      Contreras Leiva, Mónica Patricia; Rivas Zúñiga, Francisco; Rojas Fernández, José David; Arrieta Orozco, Orlando; Vilanova Arbós, Ramón; Barbu, Marian (2016-10-13)
      In this paper the Enhanced Normalized Normal Constrained method is applied to find the optimal tuning of second order PID controllers. This tuning takes into account both the servo and regulatory modes simultaneously, as ...
    • Robust PI/PID controllers for load disturbance based on direct synthesis 

      Vilanova Arbós, Ramón; Arrieta Orozco, Orlando; Ponsa, Pere (2018-10)
      It is recognized that disturbance rejection is much more important than set-point tracking for many process control applications, leading set-point tracking to a secondary level of interest. In this paper a proposal for ...
    • Robustness/performance tradeoff for anisochronic plants with two degrees of freedom PID controllers 

      Espinoza Bolaños, Mauricio; Rojas Fernández, José David; Vilanova Arbós, Ramón; Arrieta Orozco, Orlando (2015)
      In this paper, the anisochronic model (which is able to represent both over-damped and under-damped process with the same topology) is used for the tuning of PI and PID controllers. The relationship between robustness and ...