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Buenos Aires, Argentina

The Buenos Aires Institute of Technology, is an Argentine private university located in the city of Buenos Aires. Its focus is primarily on Information Technology, Business and Engineering studies.In spite of being a small university, with only about 1650 undergraduate students, ITBA is regarded as one of the best engineering schools in Latin America, with an annual graduation average of 200 engineers, about 10% of the annual national total. ITBA maintains cooperation agreements with over 50 universities in 20 countries. Wikipedia.


Bianchi F.D.,Catalonia Institute for Energy Research IREC | Sanchez Pena R.S.,Buenos Aires Institute of Technology
Automatica | Year: 2011

Here, a methodology is presented which considers the interpolation of linear time-invariant (LTI) controllers designed for different operating points of a nonlinear system in order to produce a gain-scheduled controller. Guarantees of closed-loop quadratic stability and performance at intermediate interpolation points are presented in terms of a set of linear matrix inequalities (LMIs). The proposed interpolation scheme can be applied in cases where the system must remain at the operating points most of the time and the transitions from one point to another rarely occur, e.g., chemical processes, satellites. © 2010 Elsevier Ltd. All rights reserved.


Castane-Selga R.,TU Munich | Sanchez Pena R.S.,Buenos Aires Institute of Technology
IEEE Transactions on Control Systems Technology | Year: 2010

Recent noise at work regulations in the EU (2003) have been established to prevent noise induced hearing loss (NIHL). This imposes better performance results to traditional feedback active noise control (ANC) in motorcycle helmets, which suffer from well known limitations. Here two new ideas are applied to this problem. First, an hybrid (feedforward/feedback) linear time invariant (LTI) controller is designed for a motorcycle helmet ANC, which improves the resulting attenuation. This is achieved by adding an extra pair of microphones which measure the external noise that is then used as the feedforward input signal. In addition and to increase even more the resulting performance, the air velocity is measured in real-time and used as the parameter which schedules a linear parameter varying (LPV) feedback (FB) controller. This is combined with the previous feedforward (FF) controller, resulting in a time-varying hybrid controller. Both hybrid, LTI and LPV controllers are designed using linear matrix inequality (LMI)-based optimization. Two experiments have been carried out to measure the relation between external noise spectra and velocity: a wind tunnel test and a freeway ride experience. The resulting controllers are tested in a simulation which uses actual data obtained from the freeway experiment. The resulting attenuations in this motivating study seem promising for future controller tests to be performed in real-time, with the adequate hardware. © 2006 IEEE.


Saint-Nom R.,Buenos Aires Institute of Technology
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings | Year: 2010

The goal of this paper is to invite the reader to consider role-playing as a method to train Signal Processing students for professional functions they would undertake in their future careers. Interaction, communication skills and learning purposes of SP concepts are key elements of this approach. An example applied to Analog to Digital converters is detailed, to show the advantages of this technique and the enthusiasm awakened. ©2010 IEEE.


Bianchi F.D.,Catalonia Institute for Energy Research IREC | Sanchez-Pena R.S.,Buenos Aires Institute of Technology | Guadayol M.,Alstom
Renewable Energy | Year: 2012

A new design methodology of gain scheduled controllers for wind turbines is presented. The proposed methodology is intended to deal with multi-variable and high order models as those produced by high fidelity aeroelastic simulators. The methodology consists in interpolating the local controller outputs and does not require a uniform state definition either of the local controllers or of the linear models. This allows the design of each controller independently, an essential point in cases of high order models. An aeroelastic model of a typical commercial wind turbine is used to illustrate the methodology. © 2011 Elsevier Ltd.


Aguirre M.P.,Buenos Aires Institute of Technology | Aguirre M.P.,National University of La Plata | Calvino L.,Buenos Aires Institute of Technology | Calvino L.,TU Eindhoven | And 2 more authors.
IEEE Transactions on Industrial Electronics | Year: 2013

In this paper, a multilevel current-source inverter (MCSI) topology is analyzed. The issue of constructing a novel modular single-rating inductor MCSI is explored, taking advantage of the features of field-programmable gate arrays (FPGA) for control and gate signal generation. The proposed topology is built with identical modules where all inductors carry the same amount of current, simplifying the construction and operation of industrial applications with higher efficiency. A new state-machine approach, which is easy to implement in an FPGA, and a proper implementation of the phase-shifted carrier sinusoidal pulse width modulation (PSC-SPWM) allow both current balance in all modules and effective switching-frequency minimization. The performance of the MSCI proposed is simulated with Matlab and is verified by constructing a prototype. © 2012 IEEE.

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