Listar Ingeniería eléctrica por título
Mostrando ítems 2-21 de 149
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A Comparative Study on Denoising Algorithms for Footsteps Sounds as Biometric in Noisy Environments
(2022-08-03)Biometrics is the automated identification of a person based on distinctive characteristics, such as fingerprints, face, voice, or the sound of footsteps. This last characteristic has significant challenges considering the ... -
A comparison of bio-inspired optimization methodologies applied to the tuning of industrial controllers
(2016-11-09)A comparison of different bio-inspired methods is presented for the problem of tuning the parameters of a PID industrial controller for second order plus time delay plants. The compared algorithms are representative of ... -
A DMC implementation for a binary distillation column: a MIMO approach
(2022-11)Distillation columns are essential equipment for many industries, they are in charge of separating liquid mixtures based on the volatility differences of their components. Traditional PID control techniques have proven not ... -
A first approach to acoustic characterization of Costa Rican children’s speech
(2020-03-27)As human interaction with computers becomes more pervasive, the value of developing automatic speech recognition, text-to-speech synthesis, and related speech technologies become more important for people of all ages, ... -
A modeling methodology to evaluate the impact of temperature on Solar Home Systems for rural electrification
(2018)Solar Home Systems (SHS) have recently gained prominence as the most promising solution for increasing energy access in remote, off-grid communities. However, the higher than standard testing conditions (STC) temperatures ... -
A Novel Control System for Medium-Voltage Hexverter-Based Drives
(2020-09-23)In this paper, a novel control system for the Hexverter-based drive is proposed and analysed. Unlike previously proposed control schemes, the proposed one does not require the information of the machine variables to ... -
A performance evaluation of several artificial neural networks for mapping speech spectrum parameters
(2020)In this work, we compare different neural network architectures, for the task of mapping spectral coefficients of noisy speech signals with those corresponding to natural speech. In previous works on the subject, fully-connected ... -
A practical method for considering shading on photovoltaics systems energy yield
(2023-10-01)Along with the widespread adoption of solar energy, it is fundamental to develop methods and tools that help practitioners during the design phase of photovoltaic (PV) systems. Currently, multiple commercial software can ... -
A risk-based methodology for defining the time of intentional controlled islanding
(2015-10-05)Power systems are operated close to their stability limits and this increases the probability of cascading outages leading to large-area blackouts. To mitigate these phenomena, intentional controlled islanding (ICI) has ... -
A simple methodology for estimating battery lifetimes in Solar Home System design
(2017)The proliferation of Solar Home Systems (SHS) in recent times hopes to provide an alleviating solution to the global problem of energy poverty. Battery is usually the most expensive but important part of an SHS; it is also ... -
A survey on 3D Perception for robot object manipulation tasks
(2019)Un sistema confiable de manipulación de objetos requiere de percepción sofisticada. Aspectos importantes de este sistema es ser capaz de detectar la forma, tamaño y pose de los objetos a manipular. Estas capacidades se ... -
An experimental study on fundamental frequency detection in reverberated speech with pre-trained recurrent neural networks
(2020)The detection of the fundamental frequency (f0) in speech signals is relevant in areas such as automatic speech recognition and identification, with multiple potential applications. For example, in virtual assistants, ... -
An Experimental Study on Speech Enhancement Based on a Combination of Wavelets and Deep Learning
(2022-06-20)The purpose of speech enhancement is to improve the quality of speech signals degraded by noise, reverberation, or other artifacts that can affect the intelligibility, automatic recognition, or other attributes involved ... -
An Object Manipulation System Architecture for Humanoid Robots Based on Primate Cognition
(2018)Currently one of the most important challenges is to bring robots out of factory floors to work alongside humans. Because these environments are characterized by a very large variety of objects, a key factor is to provide ... -
An Overview of Applications of the Modular Multilevel Matrix Converter
(2020-10-22)The modular multilevel matrix converter is a relatively new power converter topology suitable for high-power alternating current (AC)-to-AC applications. Several publications in the literature have highlighted the converter ... -
An Overview of Modelling Techniques and Control Strategies for Modular Multilevel Matrix Converters
(2020-09-08)The Modular Multilevel Matrix Converter is a relatively new power converter topology appropriate for high-power Alternating Current (AC) to AC purposes. Several publications in the literature have highlighted the converter ... -
Analysis of Atomic Manipulation Tasks in human- shared scenarios (a Kitchen and a Collaborative Workshop Table) for a Humanoid Robot
(2018)In this paper we analyze the vocabulary of an action description language to be used, together with a low level object controller, by a humanoid robot in two specific scenarios: a kitchen and a collaborative workshop ... -
Análisis acústico de vocales de niños costarricenses
(2020-06-23)En este artículo se presenta un análisis acústico de vocales pronunciadas por niños costarricenses con edades entre los 6 y los 12 años. Estos análisis tienen como objetivo lograr una mejor comprensión de las características ... -
Análisis bibliométrico de los proyectos de graduación de Ingeniería Eléctrica de la Universidad de Costa Rica 1999-2018
(2020-01-01)El objetivo de esta investigación fue realizar un análisis bibliométrico de los proyectos de graduación de pregrado en la Escuela de Ingeniería Eléctrica de la Universidad de Costa Rica, entre los años 1999 y 2018. El ...