Now showing items 1-20 of 23

    • Actuator-fault detection and isolation based on interval observers and invariant sets 

      Xu, Feng; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Stoican, Florin; Olaru, Sorin (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      This paper proposes an interval observer-based actuator fault detection and isolation (FDI) approach. An interval observer matching the healthy system mode is designed to monitor the system. When the system is in different ...
    • Actuator-fault detection and isolation based on set-theoretic approaches 

      Xu, Feng; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Stoican, Florin; Olaru, Sorin (2014-06-01)
      Article
      Open Access
      In this paper, an actuator-fault detection and isolation (FDI) approach is proposed. The FDI approach is based on a bank of interval observers, each of which is designed to match a healthy or faulty system mode. To ensure ...
    • Closed-loop actuator-fault detection and isolation using invariant set and tubes 

      Xu, Feng; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Stoican, Florin; Olaru, Sorin (2014)
      Conference report
      Restricted access - publisher's policy
      This paper proposes a new actuator-fault detection and isolation (FDI) strategy for closed-loop discrete time-invariant systems by using invariant sets and tubes. In this approach, invariant sets are used for fault detection ...
    • Closed-loop actuator-fault detection and isolation using invariant sets and tubes 

      Xu, Feng; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Stoican, Florin; Olaru, Sorin (2014)
      Conference report
      Restricted access - publisher's policy
      This paper proposes a new actuator-fault detection and isolation (FDI) strategy for closed-loop discrete time-invariant systems by using invariant sets and tubes. In this approach, invariant sets are used for fault detection ...
    • Combining set-theoretic UIO and invariant sets for optimal guaranteed robust fault detection and isolation 

      Xu, Feng; Tan, Junbo; Wang, Ye; Puig Cayuela, Vicenç; Wang, Xueqian (2019-06-01)
      Article
      Restricted access - publisher's policy
      This paper proposes an optimal guaranteed robust fault detection and isolation (FDI) method combing the set-theoretic unknown input observer (SUIO) and the robust positively invariant (RPI) sets for linear time-invariant ...
    • Diagnosis and fault-tolerant control using set-based methods 

      Xu, Feng (Universitat Politècnica de Catalunya, 2014-11-27)
      Doctoral thesis
      Open Access
      The fault-tolerant capability is an important performance specification for most of technical systems. The examples showing its importance are some catastrophes in civil aviation. According to some official investigations, ...
    • Fault detection and isolation based on the combination of a bank of interval observers and invariant sets 

      Xu, Feng; Stoican, Florin; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Olaru, Sorin (2013)
      Conference report
      Restricted access - publisher's policy
      In this paper, a fault detection and isolation (FDI) approach using a bank of interval observers is developed. From the methodological point of view, a bank of interval observers is designed according to different dynamical ...
    • Generalized set-theoretic unknown input observer for LPV systems with application to state estimation and robust fault detection 

      Xu, Feng; Tan, Junbo; Wang, Xueqian; Puig Cayuela, Vicenç; Liang, Bin; Yuan, Bo; Liu, Houde (2017-02-16)
      Article
      Open Access
      This paper proposes to design an unknown input observer (UIO) for the linear-parameter-varying (LPV) system on the basis of the set theory, which is named as the set-theoretic UIO (SUIO). The advantage of the SUIO consists ...
    • Improved fault detection and isolation strategy using a bank of interval observers 

      Xu, Feng; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Stoican, Florin; Olaru, Sorin (2014)
      Conference report
      Restricted access - publisher's policy
      In this paper, an improved algorithm for actuator-fault detection and isolation (FDI) using a bank of interval observers is presented, where each interval observer matches one considered system mode. In this approach, ...
    • Improved fault detection and isolation strategy using a bank of interval observers 

      Xu, Feng; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Stoican, Florin; Olaru, Sorin (International Federation of Automatic Control (IFAC), 2014)
      Conference report
      Restricted access - publisher's policy
      In this paper, an improved algorithm for actuator-fault detection and isolation (FDI) using a bank of interval observers is presented, where each interval observer matches one considered system mode. In this approach, ...
    • Mixed active/passive robust fault detection and isolation using set-theoretic unknown input observers 

      Xu, Feng; Tan, Junbo; Wang, Xueqian; Puig Cayuela, Vicenç; Liang, Bin; Yuan, Bo (2017-12-19)
      Article
      Open Access
      IEEE This paper proposes a robust fault detection and isolation (FDI) approach that combines active and passive robust FDI approaches. Standard active FDI approaches obtain robustness by using the unknown input observer ...
    • Nonlinear model predictive control with constraint satisfactions for a quadcopter 

      Wang, Ye; Ramírez Jaime, Andrés Felipe; Xu, Feng; Puig Cayuela, Vicenç (2016)
      Conference report
      Open Access
      This paper presents a nonlinear model predictive control (NMPC) strategy combined with constraint satisfactions for a quadcopter. The full dynamics of the quadcopter describing the attitude and position are ...
    • On the relationship between interval observers and invariant sets in fault detection 

      Xu, Feng; Stoican, Florin; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Olaru, Sorin (2013)
      Conference report
      Restricted access - publisher's policy
      In this paper, the relationship between two settheoretic fault detection (FD) approaches, the interval observerbased and the invariant set-based approaches, is investigated. In FD, interval observers monitor the system ...
    • Robust fault detection and isolation based on zonotopic unknown input observers for discrete-time descriptor systems 

      Wang, Ye; Puig Cayuela, Vicenç; Xu, Feng; Cembrano Gennari, Gabriela (2019-01-01)
      Article
      Restricted access - publisher's policy
      In this paper, we propose a robust fault detection and isolation (FDI) strategy based on zonotopic unknown input observers (UIOs) for discrete-time descriptor linear time-varying (LTV) systems subject to uncertainties and ...
    • Robust MPC for actuator-fault tolerance using set-based passive fault detection and active fault isolation 

      Xu, Feng; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Olaru, Sorin; Niculescu, Silviu-Iulian (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Open Access
      In this paper, an actuator fault-tolerant control (FTC) scheme is proposed, which is based on tube-based model predictive control (MPC) and set-theoretic fault detection and isolation (FDI). As a robust MPC technique, ...
    • Robust MPC for actuator-fault tolerance using set-based passive fault detection and active fault isolation 

      Xu, Feng; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Olaru, Sorin; Niculescu, Silviu-Iulian (2017-03-01)
      Article
      Open Access
      In this paper, a fault-tolerant control (FTC) scheme is proposed for actuator faults, which is built upon tube-based model predictive control (MPC) as well as set-based fault detection and isolation (FDI). In the class of ...
    • Robust state estimation and fault detection combining unknown input observer and set-membership approach 

      Xu, Feng; Tan, Junbo; Wang, Xueqian; Puig Cayuela, Vicenç; Liu, Houde; Liang, Bin; Yuan, Bo (IEEE Press, 2016)
      Conference report
      Open Access
      This paper aims to propose a new robust state-estimation and fault-detection method by combining the unknown input observer (UIO) and the set-membership estimator (SME). It is known that both the SUIO and the SME can be ...
    • Sensor-fault detection and Isolation using Interval Observers 

      Xu, Feng; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Stoican, Florin; Olaru, Sorin (2013)
      Conference report
      Restricted access - publisher's policy
      This paper proposes an interval observer-based sensor fault detection and isolation (FDI) approach for the closed-loop systems. In this proposed approach, residuals are defined in such a way that their components are ...
    • Sensor-fault tolerance using robust MPC with set-based state estimation and active fault isolation 

      Xu, Feng; Olaru, Sorin; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Niculescu, Silviu-Iulian (2017-05-25)
      Article
      Open Access
      In this paper, a sensor fault-tolerant control scheme using robust model predictive control (MPC) and set-theoretic fault detection and isolation (FDI) is proposed. The robust MPC controller is used to control the plant ...
    • Sensor-fault tolerance using robust MPC with set-based state estimation and active fault isolation 

      Xu, Feng; Olaru, Sorin; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos; Niculescu, Silviu-Iulian (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Open Access
      In this paper, a sensor fault-tolerant control (FTC) scheme using robust model predictive control (MPC) and set theoretic fault detection and isolation (FDI) is proposed. The MPC controller is used to both robustly control ...