Exploració per tema "Actuators"

Ara es mostren els items 1-20 de 38

    • A Stiffness-fault-tolerant control strategy for an elastically actuated powered knee orthosis 

      Velasco-Guillen, Rodrigo J.; Grosu, Victor; Carmona Ortiz, Víctor A.; Vanderborght, Bram; Lefeber, Dirk; Font Llagunes, Josep Maria; Beckerle, Philipp (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Elastic actuators can provide safe human-robot interaction and energy efficient mobility. For this purpose they are ideal for wearable robotic applications. However, such actuators are subject to stiffness faults. We present ...

    • A virtual actuator approach for fault tolerant control of switching LPV systems 

      Rotondo, Damiano; Puig Cayuela, Vicenç; Nejjari Akhi-Elarab, Fatiha (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, virtual actuators are proposed as a Fault Tolerant Control (FTC) strategy for switching Linear Parameter Varying (LPV) systems subject to actuator faults. The overall solution relies on the addition of a ...

    • Accurate determination of the frequency response function of submerged and confined structures by using PZT-patches 

      Presas Batlló, Alexandre; Valentín Ruiz, David; Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen; Egusquiza Montagut, Mònica; Bossio, Matias (2017-03-22)
      Article
      Accés obert
      To accurately determine the dynamic response of a structure is of relevant interest in many engineering applications. Particularly, it is of paramount importance to determine the Frequency Response Function (FRF) for ...

    • Active control of vibrant actuators with adaptive adjustment of the reference 

      Bertran Albertí, Eduardo; Montoro López, Gabriel (Fuertes, J.M. (ed.) IEEE, 1999)
      Text en actes de congrés
      Accés obert
      An improved adaptive filter for eliminating periodic vibrations of unknown frequency in rotary machinery is presented. The proposed canceller is based on a usual bank of digital adaptive notch filters, each filter tuned ...

    • Actuator fault diagnosis of singular delayed LPV systems with inexact measured parameters via PI unknown input observer 

      Hassanabadi, Amir Hossein; Shafiee, Masoud; Puig Cayuela, Vicenç (2017-08-11)
      Article
      Accés obert
      In this study, actuator fault diagnosis of singular delayed linear parameter varying (SDLPV) systems is considered. The considered system has a time-varying state delay and its matrices are dependent on some parameters ...

    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...

    • Analysis and design of the 3Cat-8 pointing control system for high-volume data downlink 

      Cruz Martinez, Alberto (Universitat Politècnica de Catalunya, 2023-06-27)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   NanosatLab
      The objective of this bachelors thesis is to conduct a comprehensive analysis of the communication subsystems in the UHF, S, and X bands of the 3Cat-8 mission. This mission aims to develop a satellite under the CubeSat ...

    • Apoderament d'una xarxa d'actuadors amb integració en un gestor web 

      Borràs Conte, Marc (Universitat Politècnica de Catalunya, 2017-10)
      Projecte Final de Màster Oficial
      Accés obert

    • Application of Active Flow Control on airfoils at ultralow Reynolds numbers 

      San Gabriel Romero, Carlos (Universitat Politècnica de Catalunya, 2019-10-29)
      Treball Final de Grau
      Accés obert
      In a previous research Active Flow Control techniques, such as sweeping jets, applied in an ultra-low Reynolds regime (Re=1000) were found effective to reattach an already separated flow achieving lift enhancements but ...

    • Càlcul i disseny d'una màquina industrial. Actuador lineal electromecànic 

      Gómez Mora, Adrià (Universitat Politècnica de Catalunya, 2024-01-29)
      Treball Final de Grau
      Accés obert
      El següent projecte presenta el procés complet d’ideació d’un actuador lineal electromecànic, des del disseny de cada peça i selecció del material juntament passant per l’elaboració dels plànols fins al càlcul dinàmic, ...

    • Characterization of the minimum detectable fault of interval observers by using set-invariance theory 

      Pourasgharlafmejani, Masoud; Puig Cayuela, Vicenç; Ocampo-Martínez, Carlos (IEEE Press, 2016)
      Text en actes de congrés
      Accés obert
      This paper addresses the characterization of the minimum detectable fault when using interval observers. The interval observers consider both input and uncertainty as unknown but bounded. The minimum detectable fault using ...

    • Control of flow separation at a swept, multielement airfoil by periodic excitation 

      Griera Tapia, Jordi (Universitat Politècnica de Catalunya, 2022-09)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Technische Universität München
      Airfoils at high angle of attack, such as for flaps with large deflection angle, suffer from leading edge separation, creating a large-scale separation region behind the airfoil. Under such conditions the lift force cannot ...

    • Correcting the ADCS jitter induced blurring in small satellite imagery 

      Llaveria Godoy, David; Camps Carmona, Adriano José; Hyuk, Park (2020-09)
      Article
      Accés obert
      Earth Observation missions have increasingly demanding requirements, i.e., higher spatial resolutions and SNR, and lower revisit times, etc. High-resolution images have to be captured with precise pointing accuracy which ...

    • Detection of icing and actuators faults in the longitudinal dynamics of small UAVs using an LPV proportional integral unknown input observer 

      Rotondo, Damiano; Cristofaros, A; Johansen, T; Nejjari Akhi-Elarab, Fatiha; Puig Cayuela, Vicenç (IEEE Press, 2016)
      Text en actes de congrés
      Accés obert
      This paper proposes a linear parameter varying proportional integral unknown input observer (PI-UIO) for the diagnosis of actuator faults and icing in unmanned aerial vehicles. It is shown that in presence of sensor noise, ...

    • Diseño de una plataforma de desarrollo de algoritmos de control para Actuadores electrostáticos MEMS 

      Casas Martínez, José Luis (Universitat Politècnica de Catalunya, 2014-03-26)
      Projecte/Treball Final de Carrera
      Accés obert
      [ANGLÈS] The design of a platform for development of algorithms to control electrostatic actuators MEMS is proposed. This platform forms, an electronic circuit for the estimation of the distance or the capacity of an ...

    • Estudio del comportamiento dinámico de un actuador lineal para mini-cargadoras 

      Alemany Juvanteny, Ignasi (Universitat Politècnica de Catalunya, 2017-06-10)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Roquet Hydraulics
      L'objectiu bàsic del TFG és l'estudi del comportament fluid-mecánio d'un cilindre hidràulic quan arriba al final de carrera.

    • Fault tolerant control of uncertain dynamical systems using interval virtual actuators 

      Rotondo, Damiano; Cristofaro, Andrea; Johansen, Tor Arne (2018-01-25)
      Article
      Accés obert
      In this paper, a model reference fault tolerant control strategy based on a reconfiguration of the reference model, with the addition of a virtual actuator block, is presented for uncertain systems affected by disturbances ...

    • Fault tolerant control of unstable LPV systems subject to actuator saturations using virtual actuators 

      Rotondo, Damiano; Ponsart, J. C.; Theilliol, Didier; Nejjari Akhi-Elarab, Fatiha; Puig Cayuela, Vicenç (International Federation of Automatic Control (IFAC), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      An active fault tolerant control (FTC) strategy for open-loop unstable linear parameter varying (LPV) systems subject to actuator saturations and faults is proposed in this paper. At first, the nominal controller is designed ...

    • Flow topology and heat transfer analysis of slotted and axisymmetric synthetic impinging jets 

      Miró Jané, Arnau; Soria Guerrero, Manel; Cajas García, Juan Carlos; Rodríguez Pérez, Ivette María; Moulinec, Charles (2021-06)
      Article
      Accés obert
      This work is focused on exploring the flow and heat transfer capabilities for slotted and axisymmetric cavity configurations for synthetic impinging jets; the jet is enclosed between two isothermal parallel plates, impinging ...

    • Fluid flow and heat transfer simulation of an electro hydraulic actuator 

      Oehler Couso, Daniel (Universitat Politècnica de Catalunya / Technische Universität Wien, 2016)
      Projecte/Treball Final de Carrera
      Accés obert
      Every technological system has to be improved and developed with time to stay competitive in the market. These means anticipate and solvent every possible problem that can appear in a mechanical system and propose new ...