Ara es mostren els items 21-36 de 36

  • Modelling of a charge control method for capacitive MEMS 

    Giounanlis, Panonios; Blokhina, Elena; Feely, Orla; Domínguez Pumar, Manuel; Pons Nin, Joan; Gorreta Mariné, Sergio (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Charging of dielectric materials in microelectromechanical systems (MEMS) actuated electrostatically is a major reliability issue. In our previous work we proposed a feedback loop control method that is implemented as ...
  • Piezo-MUMPS batch #1. First Report. 

    Pons Nin, Joan; Gorreta Mariné, Sergio; Domínguez Pumar, Manuel; Blokhina, Elena; O'Connell, D. (2013-07-12)
    Report de recerca
    Accés restringit per acord de confidencialitat
  • Pulsed digital oscillators for electrostatic MEMS 

    Gorreta Mariné, Sergio; Ruiz Fernández, Daniel; Blokhina, Elena; Pons Nin, Joan; Jimenez Serres, Vicente; O'Connell, D.; Feely, Orla; Madrenas Boadas, Jordi; Domínguez Pumar, Manuel (2012)
    Article
    Accés restringit per política de l'editorial
    This paper introduces a new actuation scheme for implementing Pulsed Digital Oscillators (PDOs) for electrostatic MEMS resonators. In this scheme, the capacitance of the device is biased with a voltage and it is periodically ...
  • Real-time characterization of dielectric charging in contactless capacitive MEMS 

    Domínguez Pumar, Manuel; Gorreta Mariné, Sergio; Pons Nin, Joan; Blokhina, Elena; Giounanlis, Panonios; Feely, Orla (2015-03-01)
    Article
    Accés obert
    This paper presents a new method to characterize the dynamics of the charge trapped in the dielectric layer of contactless microelectromechanical systems. For sampled-time systems, this allows knowing the state of the net ...
  • Second order sigma-delta control of charge trapping for MOS capacitors 

    Bheesayagari, Chenna Reddy; Gorreta Mariné, Sergio; Pons Nin, Joan; Domínguez Pumar, Manuel (2017-09-01)
    Article
    Accés restringit per política de l'editorial
    This paper presents the circuit topology of a second order sigma-delta control of charge trapping for MOS capacitors. With this new topology it is possible to avoid the presence of plateaus that can be found in first-order ...
  • Self-calibrating closed-loop circuit for configurable constant voltage thermal anemometers 

    Gorreta Mariné, Sergio; Barajas Ojeda, Enrique; Kowalski, Lukasz; Atienza García, María Teresa; Domínguez Pumar, Manuel; Jimenez Serres, Vicente (Institution of Electrical Engineers, 2015-09-17)
    Article
    Accés obert
    A new circuit is described which applies a configurable voltage across an RTD while the current flowing through it is measured with a current mirror. The circuit also allows working with voltages above the IC supply voltage ...
  • Sigma-delta effects and charge locking in capacitive MEMS under dielectric charge control 

    Giounanlis, Panagiotis; Gorreta Mariné, Sergio; Domínguez Pumar, Manuel; Pons Nin, Joan; Feely, Orla; Blokhina, Elena (2016-05)
    Article
    Accés obert
    This work investigates, analytically and experimentally, the effects induced by the use of a first-order sigma-delta (S¿) feedback loop as a control method of dielectric charging for capacitive microelectromechanical systems ...
  • Simultaneous control of dielectric charge and device capacitance in electrostatic MEMS 

    Gorreta Mariné, Sergio; Pons Nin, Joan; Domínguez Pumar, Manuel (2015-12)
    Article
    Accés obert
    This letter presents a double closed loop for simultaneously controlling the net dielectric charge and the device capacitance in contactless electrostatic MEMS devices. The first loop controls the net charge trapped in ...
  • Simultaneous control of dielectric charging and device capacitance for contactless electrostatic MEMS 

    Gorreta Mariné, Sergio (Universitat Politècnica de Catalunya, 2016-09-20)
    Projecte/Treball Final de Carrera
    Accés restringit per decisió de l'autor
    Simultaneous control of dielectric charging and device capacitance for contactless electrostatic MEMS
  • Sliding mode analysis applied to improve the dynamical response of a spherical 3D wind sensor for Mars atmosphere 

    Atienza García, María Teresa; Kowalski, Lukasz; Gorreta Mariné, Sergio; Jimenez Serres, Vicente; Castañer Muñoz, Luis María; Domínguez Pumar, Manuel (2017-11-01)
    Article
    Accés obert
    The objective of this paper is to show how the structure of a thermal wind anemometer can be tuned to ensure a fast response when the sensor works in closed loop configuration (constant temperature operation). If the thermal ...
  • Sliding-mode analysis of the dynamics of sigma-delta controls of dielectric charging 

    Domínguez Pumar, Manuel; Gorreta Mariné, Sergio; Pons Nin, Joan (Institute of Electrical and Electronics Engineers (IEEE), 2016-03-08)
    Article
    Accés obert
    The purpose of this paper is to show that sigma-delta controllers of dielectric charge can be analyzed using the tools of sliding-mode controllers, in the infinite sampling frequency approximation. This allows to study the ...
  • Sliding mode control of heterogeneous systems 

    Domínguez Pumar, Manuel; Gorreta Mariné, Sergio; Atienza García, María Teresa; Blokhina, Elena; Pons Nin, Joan (2017-06-01)
    Capítol de llibre
    Accés restringit per política de l'editorial
    This paper establishes a link between closed-loop controls for heterogeneous systems and sliding mode controls. We demonstrate that sliding mode analysis matches with experimental results from dielectric charge controllers. ...
  • Spherical wind sensor for the atmosphere of mars 

    Kowalski, Lukasz; Atienza García, María Teresa; Gorreta Mariné, Sergio; Jimenez Serres, Vicente; Domínguez Pumar, Manuel; Silvestre Bergés, Santiago; Castañer Muñoz, Luis María (2016-04-01)
    Article
    Accés obert
    A novel wind speed and direction sensor designed for the atmosphere of Mars is described. It is based on a spherical shell divided into four triangular sectors according to the central projection of tetrahedron onto the ...
  • Thermal dynamics modeling of a 3D wind sensor based on hot thin film anemometry 

    Atienza García, María Teresa; Kowalski, Lukasz; Gorreta Mariné, Sergio; Jimenez Serres, Vicente; Domínguez Pumar, Manuel (2018-02-01)
    Article
    Accés obert
    The objective of this paper is to obtain time-varying models of the thermal dynamics of a 3D hot thin film anemometer for Mars atmosphere. To this effect, a proof of concept prototype of the REMS (Rover Environmental ...
  • Time-varying thermal dynamics modeling of the prototype of the REMS wind sensor 

    Atienza García, María Teresa; Kowalski, Lukasz; Gorreta Mariné, Sergio; Jimenez Serres, Vicente; Domínguez Pumar, Manuel (2017)
    Text en actes de congrés
    Accés obert
    The objective of this work is to show the results from the analysis of the thermal dynamics of a prototype of the REMS 3D wind anemometer using the tools of Diffusive Representation (DR). DR is a mathematical tool that ...
  • Understanding complexity in multiphysics systems-on-a-chip: modern approaches for design 

    Blokhina, Elena; O'Connell, D.; Andrade Miceli, Dennis; Gorreta Mariné, Sergio; Pons Nin, Joan; Domínguez Pumar, Manuel; Feely, Orla; Galayko, Dimitri (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The aim of this paper is to formalise the term “complexity” in the context of modern microelectronics, propose the definitions of key terms and discuss a case study. Our aim is to show that the term “complex system” is ...