Materials docents: Recent submissions

Now showing items 13-24 of 2246

    • Transition to turbulence in Taylor-Couette flow 

      Manyer, Pau; Matons, Joan (Universitat Politècnica de Catalunya, 2021-06-04)
      Coursework
      Open Access
      The document hereby presents the results during the study of Taylor-Couette ow patterns and their transition to a turbulent regime, computed using numerical methods with the code nsCouette. Successfully, simulations ...

    • Bidirectional Speed Estimation Using a Single Asymmetric Encoder Wheel 

      Planas Lisbona, Mireia; Sallés Rius, Anna; Sebastián Esandi, Naila (Universitat Politècnica de Catalunya, 2021-06-04)
      Coursework
      Open Access
      The aim of this project is to design an asymmetric encoder and develop an algorithm able to estimate the angular speed and direction of rotation using a single set of slits and detectors. This proposed algorithm will be ...

    • Frequency chirp reduction in Mach-Zehnder modulators 

      Calero, Héctor; Guerrero, Quim (Universitat Politècnica de Catalunya, 2021-06-04)
      Coursework
      Open Access
      We present our study of the Mach-Zehnder modulator (MZM) and the transmission of pure tone radiofrequency signals through an optical ber link. Our results show that the detected signal at the receiver vanishes at a speci ...

    • Terminal Control Of A 2-Link Robot Manipulator 

      De Castro, Josep Maria; Domínguez Pla, Paula; Palau, Nil (Universitat Politècnica de Catalunya, 2021-06-04)
      Coursework
      Open Access
      This paper describes a comparative evaluation of different controllers for a position regulation 2-link robot manipulator. The equation of motion for two link robot is a nonlinear di erential equation. The controllers, namely ...

    • Boundary conditions and Rankine-Hugoniot condition in computational acoustics 

      Florit, Enric; Gómez, Roger (Universitat Politècnica de Catalunya, 2021-06-04)
      Coursework
      Open Access
      In this work we derive a procedure that permits the implementation of suitable boundary condi- tions in the nite volume method for problems in acoustics. Afterwards, we validate the procedure through numerical experiments ...

    • Modelling and designing a Paul ion trap 

      Capellas, Samuel; Hajjar, Rafah (Universitat Politècnica de Catalunya, 2021-06-04)
      Coursework
      Open Access
      The present article consists in the modelling an design of a Paul ion trap using the Method of Moments for numerical integration. Firstly, we have developed some preliminary work with simple geometries in two and three ...

    • Path Integral approach to the 2D Ising model through the Worm Algorithm 

      Cavallar, Alberto; Simó, Enric (Universitat Politècnica de Catalunya, 2021-06-03)
      Coursework
      Open Access
      The aim of this article is to present a Path Integral Monte Carlo method known as the Worm Algorithm (WA) and analyze its promising performance by studying a particular problem. For this purpose, the well-known 2D Ising ...

    • Modelling and Design of a Paul Ion Trap 

      Adell, Raúl; Capella, F.Xavier; Jímenez, Víctor (Universitat Politècnica de Catalunya, 2021-06-03)
      Coursework
      Open Access
      A Paul ion trap is a device designed to con ne charged particles in a small region of uniform, dynamic quadrupole potential. The aim of this project is to simulate numerically the distribution of charges and the potential ...

    • Control of a Flat System: Tractor With a Steerable Trailer 

      Ruiz Luyten, Max; Vilà Casadevall, Jordi (Universitat Politècnica de Catalunya, 2021)
      Coursework
      Open Access
      This paper develops and implements a control policy for a tractor with a steerable trailer in a simulated environment. Starting from the kinematic model of the system, we verify constructively that there exists a prolongation ...

    • Bidirectional optoantenna for radio over ber architectures 

      Cela París, José María; Casas Casajuana, Damià (Universitat Politècnica de Catalunya, 2021-06-05)
      Coursework
      Open Access
      This paper proposes an innovative optoantena design, result of the combination of a laser and photodiode for ber transmission and reception with a dual port full-duplex antenna. This antenna can operate at di erent ...

    • Controller design for point-to-point trajectory generation through feedback linearization of nonlinear control systems 

      Pedrals, Carles; Trius, Juan (Universitat Politècnica de Catalunya, 2021-06-02)
      Coursework
      Open Access
      In this paper some of the most common methods of nonlinear control are explored, firstly introducing the theorems and mathematical background upon which they are built, and then exploring their results. Using a solved ...

    • M81 Extragalactic nova explosions 

      Real Fraxedas, Fèlix; Jumilla Lorenz, Jordi; Sala Cladellas, Glòria (Universitat Politècnica de Catalunya, 2021-06-04)
      Coursework
      Open Access
      Using data from the Joan Oró telescope (located in Montsec, Catalonia) and the reference catalogue from Max Planck Institute, we will observe the evolution of different novae in the M81 galaxy. This article explains the ...