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Ara es mostren els items 61-80 de 112

    • Excitation of multiple spatial modes of a MENS cantilever in the pulsed digital oscillator 

      Blokhina, Elena; Feely, Orla; Domínguez Pumar, Manuel (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
      Text en actes de congrés
      Accés obert
      The aim of this paper is to apply an approach that will allow us to consider different mechanical modes of a MEMS cantilever in the form of separate mass-spring-damper equations with the appropriate form of an external ...

    • Exploring the performance of a miniature 3D wind sensor under extreme martian winds up to the dust devil scale 

      Domínguez Pumar, Manuel; Kowalski, Lukasz; Jiménez Serres, Vicente; Rodríguez Pérez, Ivette María; Soria Guerrero, Manel (2019)
      Text en actes de congrés
      Accés obert
      The objective of this paper is to explore the performance of a miniature 3D spherical wind sensor for Mars atmosphere, working under extreme wind speeds, up to the Dust Devil scale. The experimental campaign has been made ...

    • Fluid dynamics and heat transfer in the wake of a sphere 

      Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Soria Guerrero, Manel; Gómez, Samuel; Domínguez Pumar, Manuel; Kowalski, Lukasz (2019-04)
      Article
      Accés obert
      Direct numerical simulation and large-eddy simulation have been performed for a heated sphere at Reynolds numbers of $Re=1000$ and $Re=10^4$, respectively. The Prandtl number for both simulations has been $Pr=0.7$. ...

    • General dynamics of pulsed digital oscillators 

      Domínguez Pumar, Manuel; Pons Nin, Joan; Ricart Campos, Jordi (IEEE, 2008-02-08)
      Article
      Accés obert
      The objective of this work is to analyze pulsed digital oscillators (PDOs), as dynamical systems. It is proved that under some conditions, the bitstream at the output of the oscillator is that of the sign of a sampled ...

    • Heat flow dynamics in thermal systems described by diffusive representation 

      Domínguez Pumar, Manuel; Atienza García, María Teresa; Kowalski, Lukasz; Novio Vázquez, Santiago; Gorreta Mariné, Sergio; Jiménez Serres, Vicente; Silvestre Bergés, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2016-09-01)
      Article
      Accés obert
      The objective of this paper is to analyze the dynamics of heat flow in thermal structures working under constant temperature operation. This analysis is made using the tools of sliding mode controllers. The theory is ...

    • Impedance spectroscopy interpretation of silica and polystyrene colloidal suspensions 

      Véliz Noboa, Bremnen Marino; Orpella García, Alberto; Domínguez Pumar, Manuel; Bermejo Broto, Sandra (2020-03-01)
      Article
      Accés obert
      Impedance spectroscopy differences between colloidal 295-nm silica and 300-nm polystyrene nanoparticles in deionized water are analyzed in this work. Using two different two-electrode measurement setups, designed for this ...

    • Improving resilience of sensors in planetary exploration using data-driven models 

      Kumar, Dileep; Domínguez Pumar, Manuel; Sayrol Clos, Elisa; Torres Redondo, Josefina; Marín Jiménez, Mercedes; Gómez-Elvira Rodríguez, Javier; Mora Sotomayor, Luis; Navarro Lopez, Sara; Rodríguez Manfredi, José Antonio (Institute of Physics (IOP), 2023-09-04)
      Article
      Accés obert
      Improving the resilience of sensor systems in space exploration is a key objective since the environmental conditions to which they are exposed are very harsh. For example, it is known that the presence of flying debris ...

    • INSTRUMENTACIO ELECTRONICA 1 (Examen 2n Quadr.) 

      Domínguez Pumar, Manuel (Universitat Politècnica de Catalunya, 2001-06-07)
      Examen
      Accés restringit a la comunitat UPC

    • INSTRUMENTACIO ELECTRONICA 1 (Examen 2n Quadr.) 

      Domínguez Pumar, Manuel (Universitat Politècnica de Catalunya, 2001-06-11)
      Examen
      Accés restringit a la comunitat UPC

    • Light source position microsensor 

      Quero Reboul, Jose Manuel; Guerrero Conejo, Antonio Francisco; Garcia Franquelo, Leopoldo; Domínguez Pumar, Manuel; ameijeiras, iñaki; Castañer Muñoz, Luis María (Institute of Electrical and Electronics Engineers (IEEE), 2001)
      Text en actes de congrés
      Accés obert
      There exist industrial applications where an accurate estimation of a light source position is needed. That is the case for a heliostat, a device that projects sunlight upon a focus hundreds of meters distant. In this paper ...

    • Low pressure spherical thermal anemometer for space missions 

      Kowalski, Lukasz; Jiménez Serres, Vicente; Domínguez Pumar, Manuel; Gorreta Mariné, Sergio; Silvestre Bergés, Santiago; Castañer Muñoz, Luis María (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The novelty of this 2D thermal anemometer is the spherical compact and robust design with improved sensitivity in the range of 600-900Pa of carbon dioxide pressure and 0.25 to 10 m/s wind speed. The small size (11.2mm ...

    • Low-cost thermal s-d air flow sensor 

      Domínguez Pumar, Manuel; Masana Nadal, Francisco; Jiménez Serres, Vicente; Bermejo Broto, Sandra; Amírola Sanz, Jorge; Ballester, Javier; Fueyo, Norberto; Castañer Muñoz, Luis María (2002-10)
      Article
      Accés obert
      This paper describes the design and optimization of a hot-wire air flowmeter. A low-cost design of the packaging allows good thermal contact with the airflow, as well as good thermal isolation between the hot and cold ...

    • MEMS miniaturized low-noise magnetic field sensor for the observation of sub-millihertz magnetic fluctuations in space exploration 

      Manyosa i Vilardell, Xavier; Roma Dollase, David; Arqué, M.; Bonastre Majoral, Biel; Jiménez Serres, Vicente; Ramos Castro, Juan José; Pons Nin, Joan; Martín Hernández, Víctor; Salvans Tort, Josep; Gómez, Susan F.; Domínguez Pumar, Manuel (Elsevier, 2024-05-15)
      Article
      Accés obert
      The objective of this paper is to show that, using magnetic field modulation with a MEMS resonator, it is possible to reduce the noise floor of a commercial Tunneling Magnetic Resistance by one order of magnitude, in the ...

    • MEMS technologies for energy harvesting 

      Domínguez Pumar, Manuel; Pons Nin, Joan; Chávez Domínguez, Juan Antonio (Springer, 2016-11-11)
      Capítol de llibre
      Accés obert
      The objective of this chapter is to introduce the technology of Microelectromechanical Systems, MEMS, and their application to emerging energy harvesting devices. The chapter begins with a general introduction to the most ...

    • Model identification of time-varying diffusive systems 

      Atienza García, María Teresa; Kowalski, Lukasz; Gorreta Mariné, Sergio; Pons Nin, Joan; Jiménez Serres, Vicente; Domínguez Pumar, Manuel (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a characterization method based on diffusive representation for a class of linear or nonlinear time-varying diffusive systems. The system variation with time may come as a result of the own actuation ...

    • 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 ...

    • Multiphysics simulation of REMS hot-film anemometer under typical martian atmosphere conditions 

      Kowalski, Lukasz; Castañer Muñoz, Luis María; Domínguez Pumar, Manuel; Jiménez Serres, Vicente (COMSOL, 2010)
      Text en actes de congrés
      Accés obert
      The purpose of this paper is to describe numerical electro-thermal simulations of the REMS wind sensor unit [3] and the results obtained by using COMSOL multiphysics. This device is a hot-film anemometer for 2D wind ...

    • Novel capacitive proximity sensor based on electrosprayed silica nanoparticles embedded in NaCl electrolyte 

      Cedeño Mata, Kristel Michelle; Orpella García, Alberto; Domínguez Pumar, Manuel; Bermejo Broto, Sandra (Elsevier, 2023-08-01)
      Article
      Accés restringit per política de l'editorial
      This paper presents the development and analysis of novel capacitive proximity sensors (CPS) based on SiO2 nanoparticles and NaCl. The fabricated devices have been designed using a simple electrode structure intending to ...

    • On some properties of the output of a pulsed digital oscillator working with multiple resonances 

      Blokhina, Elena; Feely, Orla; Ricart Campos, Jordi; Domínguez Pumar, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2010)
      Text en actes de congrés
      Accés obert
      In this paper, we study the possible output of the pulsed digital oscillator (PDO) with multiple resonant modes of the mechanical resonator in the feedback loop. PDOs are simple circuits that allow linear resonators to ...

    • On the boundary layer development and heat transfer from a sphere at moderate Reynolds numbers 

      Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Soria Guerrero, Manel; Gómez, Samuel; Domínguez Pumar, Manuel; Kowalski, Lukasz (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Direct and large-eddy numerical simulations have been performed for a heated sphere at Reynolds numbers 200, 300, 500, 750, 1000 and 104, in the context of the development of a spherical wind sensor for Mars atmosphere ...