Now showing items 1-11 of 11

    • A review of convex approaches for control, observation and safety of linear parameter varying and Takagi-Sugeno systems 

      López Estrada, Francisco Ronay; Rotondo, Damiano; Valencia Palomo, Guillermo (2019)
      Article
      Open Access
      This paper provides a review about the concept of convex systems based on Takagi-Sugeno, linear parameter varying (LPV) and quasi-LPV modeling. These paradigms are capable of hiding the nonlinearities by means of an ...
    • A simple nonlinear observer for state and unknown input estimation: DC motor applications 

      Martínez García, Citlaly; Astorga Zaragoza, Carlos Manuel; Reyes Reyes, Juan; Puig Cayuela, Vicenç; López Estrada, Francisco Ronay (2020-04-01)
      Article
      Open Access
      The contribution of this brief is to propose a method based on a simple nonlinear observer with an easy-to-compute observer gain, in order to achieve both state and unknown input (UI) estimation. Since the structure of the ...
    • Actuator and sensor fault estimation based on a proportional-integral quasi-LPV observer with inexact scheduling parameters 

      Gomez, Samuel; López Estrada, Francisco Ronay; Valencia Palomo, Guillermo; Rotondo, Damiano; Enriquez Zarate, Josue (2019)
      Conference report
      Open Access
      This paper presents a method for actuator and sensor fault estimation based on a proportional-integral observer (PIO) for a class of nonlinear system described by a polytopic quasi-linear parameter varying (qLPV) mathematical ...
    • Actuator multiplicative fault estimation in discrete-time LPV systems using switched observers 

      Rotondo, Damiano; López Estrada, Francisco Ronay; Nejjari Akhi-Elarab, Fatiha; Ponsart, J. C.; Theilliol, Didier; Puig Cayuela, Vicenç (2016-09-01)
      Article
      Open Access
      This paper proposes an observer for the joint state and fault estimation devoted to discrete-time linear parameter varying (LPV) systems subject to actuator faults. The major contribution of this work is that the observer ...
    • Diagnosis of fluid leaks in pipelines using dynamic PCA? 

      Santos Ruiz, Ildeberto de los; López Estrada, Francisco Ronay; Puig Cayuela, Vicenç (2018-01-01)
      Article
      Restricted access - publisher's policy
      In this paper, a data-driven system based on PCA is described to detect and quantify fluid leaks in an experimental pipeline. A dynamic PCA implementation (DPCA) was used to capture the process dynamics because the system ...
    • Estimación experimental de la rugosidad y del factor de fricción en una tubería 

      Santos Ruiz, Ildeberto de los; Bermúdez Hernández, José Roberto; López Estrada, Francisco Ronay; Puig Cayuela, Vicenç; Torres Ortiz, Flor Lizeth (2018)
      Conference report
      Open Access
      El presente trabajo tiene dos propósitos. (1) Presentar la evaluación númerica y experimental de algunos métodos propuestos para estimar el factor de fricción en régimen turbulento, entre ellos una solución explícita ...
    • Estimation of node pressures in water distribution networks by Gaussian process regression 

      Santos Ruiz, Ildeberto de los; López Estrada, Francisco Ronay; Puig Cayuela, Vicenç; Blesa Izquierdo, Joaquim (2019)
      Conference report
      Open Access
      This paper proposes a method to predict pressures in all nodes of a water distribution network (WDN) by Gaussian process regression (GPR) from pressure measurements in a subset of selected nodes. The pressure sensors are ...
    • Leak diagnosis in pipelines using a combined artificial neural network approach 

      Pérez Pérez, Esvan de Jesús; López Estrada, Francisco Ronay; Valencia Palomo, Guillermo; Torres González, Luis Daniel; Puig Cayuela, Vicenç; Mina Antonio, J. D. (2021-02-01)
      Article
      Restricted access - publisher's policy
      Leakages in pipelines affect the reliability of fluid transport systems causing environmental damages, economic losses, and pressure reduction at the delivery points. Therefore, this paper presents a methodology to detect ...
    • Localización de fugas en redes de distribución de agua mediante k-NN con distancia cosenoidal 

      Santos Ruiz, Ildeberto de los; López Estrada, Francisco Ronay; Puig Cayuela, Vicenç; Blesa Izquierdo, Joaquim; Javadiha, Mohammadreza (2019)
      Conference report
      Open Access
      Se propone la localización de fugas en redes de distribución de agua medianteclasificadores basados en el método de los vecinos más cercanos (k-NN) con métrica de distanciacosenoidal. El uso de distancias cosenoidales ...
    • Online leak diagnosis in pipelines using an EKF-based and steady-state mixed approach 

      Santos Ruiz, Ildeberto de los; Bermúdez, Josu R.; López Estrada, Francisco Ronay; Puig Cayuela, Vicenç (2018-12-01)
      Article
      Open Access
      This paper proposes a methodology for leak detection and isolation (LDI) in pipelines based on data fusion from two approaches: a steady-state estimation and an Extended Kalman Filter (EKF). The proposed method considers ...
    • Simultaneous optimal estimation of roughness and minor loss coefficients in a pipeline 

      Santos Ruiz, Ildeberto de los; López Estrada, Francisco Ronay; Puig Cayuela, Vicenç; Valencia Palomo, Guillermo (Multidisciplinary Digital Publishing Institute (MDPI), 2020-09-01)
      Article
      Open Access
      This paper presents a proposal to estimate simultaneously, through nonlinear optimization, the roughness and head loss coefficients in a non-straight pipeline. With the proposed technique, the calculation of friction is ...