E. López
University of the Basque Country
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Featured researches published by E. López.
Computer Applications in Engineering Education | 2012
Francisco J. Velasco; E. Revestido; Emiliano Moyano; E. López
This article describes a remote experimentation environment for marine vehicles (Hardware and Software) and its application in engineering education. The laboratory has an in‐scale model of a turbo‐ferry tf‐120 which keeps all the hydrodynamic characteristics of the full‐scale vessel. The physical model was developed to be autonomous and is controlled remotely from a PC using Wi‐Fi communications. It has the instruments commonly used in vessels such as: GPS, UMI, accelerometers and gyrocompass. A simulation of a manoeuvring model has been developed based on geometrical definitions and compared to a heading identified model. The possibilities of the remote laboratory for engineering education are discussed.
IFAC Proceedings Volumes | 2004
Francisco J. Velasco; Teresa M. Rueda; E. López; Emiliano Moyano
Abstract This article describes the tuning of a QFT controller (Quantitative Feedback Theory) designed in order to reduce the pitch movement generated in a high-speed Turbo Ferry and so reduce the MSI (Motion Sickness Incidence). The objective pursued in the design was to improve the performance of the craft for speeds of 20, 30 and 40 knots and for ssn 4 (sea state number 4), and also the minimization of the control effort. For the QFT controller tuning a linearized model of the ship was used. System specifications are robust stability, sensitivity reduction to the waves effect and minimization of the control effort. In order to control the heave movement we have used a first order controller tuned by means of genetic algorithms applied to the non-linear model of the ship. A Simulink non-linear model has been used to simulate and validate the response of the ship with the designed controllers. It is found that these controllers provide a significant reduction of the vertical acceleration and MSI for the studied cases.
ieee international symposium on intelligent signal processing, | 2007
Francisco J. Velasco; E. Revestido; E. López; Emiliano Moyano
The aim of this paper is to obtain a model for an in- scale fast-ferry model TF-120 including the dynamics and kinematics, using a remote experimentation platform for marine vehicles. The physical model is autonomous and is controlled remotely from a PC using Wi-Fi communications. The identification and validation of the dynamical model is obtained with turning circle maneuverings. In this model are included the kinematical equations. The tests with the autonomous in-scale physical model of the high-speed ship were carried out in the surroundings of the Bay of Santander. With this model, simulations with several turbojets angles are made.
IFAC Proceedings Volumes | 2007
Francisco J. Velasco; E. Revestido; E. López; Emiliano Moyano
Abstract In this paper a parametric lineal model of heading is obtained, using a remote experimentation platform for marine vehicles. This platform has an in-scale fast-ferry physical model, TF-120 which is autonomous and has all the elements required to emulate a real vessel. The physical model is controlled remotely from a PC using Wi-Fi communications. The tests for the data acquisition with the platform for marine vehicles were carried out in the surroundings of the Bay of Santander. The parametric model identified is used to design a PID controller for heading autopilot and a simulation of this system is performed in Simulink.
IFAC Proceedings Volumes | 2005
Teresa M. Rueda; Francisco J. Velasco; E. López; Emiliano Moyano
Abstract In the modelling of systems, it is common to obtain high order mathematical models. This can lead to problems in implementation, computing problems or problems in the design of the controller. It is thus preferable to obtain reduced models of the system. The selection of the most suitable reduced model, with real applications in some cases, should not be taken lightly, but rather an exhaustive study should be made of the suitability of the model, examining the main characteristics required in each case and particularly the controller design techniques to be used. This paper presents a methodological proposal for the selection of a reduced model which is applied to the case of a TF-120 high-speed craft model.
IFAC Proceedings Volumes | 2003
E. López; Francisco J. Velaseo; Teresa M. Rueda; Emiliano Moyano
Abstract This article presents the experience tests on Motion Sickness Incidence (MSI) reduction on a high speed craft caused by heaving and pitching motions. The tests were carried out by means of a scale model ship in irregular waves in a towing tank. Several control structures have been tuned by means of genetic algorithms in order to decrease the MSI in the high-speed craft. To tune the controllers a ship Simulink model was used. It is found that these controllers provide a significant Motion Sickness Incidence reduction.
Archive | 2008
Francisco Jesús Velasco; E. Revestido; E. López; Emiliano Moyano; M. Haro Casado
OCEANS 2011 IEEE - Spain | 2011
E. Revestido; Francisco J. Velasco; Isabel Zamanillo; E. López; E. Moyano
international conference on systems | 2008
Francisco J. Velasco; E. Revestido; E. López; Emiliano Moyano; M. Haro Casado
international conference on system science and simulation in engineering | 2006
E. Revestido; Francisco J. Velasco; Teresa M. Rueda; Emiliano Moyano; E. López; Luis Ángel Esquibel