Carlos Borrás

Carlos Borrás
Industrial University of Santander | UIS · School of Mechanical Engineering

Ph.D., MSc.

About

36
Publications
4,674
Reads
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73
Citations
Introduction
Carlos Borrás currently works at the School of Mechanical Engineering, Industrial University of Santander. Carlos does research in Mechanical Engineering, Electrical Engineering and Electronic Engineering. Their current project is: NonLinear Control, Robotics and Condition and tolerant fault Based Maintenance in hydraulic
Additional affiliations
March 1993 - present
Industrial University of Santander
Position
  • Professor (Associate)
Education
August 2001 - August 2006
University of Oklahoma
Field of study
  • Mechanical Engineering

Publications

Publications (36)
Conference Paper
The usage of “robotic arms” for passive rehabilitation of post-stroke patients has been gaining relevance, considering how it can assist medical personal to carry out their tasks properly. However, when it comes to controlling these kinds of devices, it normally must deal with non-linearities issues resulting from the mathematical model of robotic...
Conference Paper
The rotational inverted pendulum (Furuta pendulum) was designed and built in the laboratory of the school of mechanical engineering of the Universidad Industrial de Santander as a learning challenge of implementing control strategies for graduate students. In this research work, it’s developed a full dynamics model using Lagrangian formulation. The...
Article
This paper presents a trajectory tracking method for the formation flight of drones, which based on the synchronization of desired references in trajectory by means of complex networks in discrete-time. The pinning sliding modes control is used to track the desired trajectory controlling only the trajectory of the leader drone, and the coupling str...
Conference Paper
Hydraulic actuators are widely used in industrial applications due to their excellent power-size relation, their capacity to apply high forces indefinitely, and their high response. Hydraulic servo systems combine the advantages of hydraulic actuators with the versatility of electronics to give the most powerful actuators in modern industrial appli...
Conference Paper
Delays are a common physic effect that is present in a huge quantity of industrial systems with feedback control. Sometimes the impact of the delay presence in a system is neglected without any difference in the performance of the controller. But in some cases, the Delay quantity reaches levels that increase the overshoot significantly or destabili...
Article
Full-text available
An effective asset management has a direct impact on maintenance costs, reliability, and equipment availability, especially in hydraulic machinery. Variable displacement axial piston pump is a major component used in the industry due to its load capacity ratio, pressure management, and high performance. Some of the main faults are wear and abrasion...
Chapter
Variable displacement axial piston hydraulic pumps (VDAP) are the heart of any hydraulic system and are commonly used in the industrial sector for its high load capacity, efficiency, and good performance in the handling of high pressures and speeds. Due to this configuration, the most common faults are related to the wear and tear of internal compo...
Conference Paper
This study presents the mathematical modelling, system identification using grey-box model estimation and position-tracking control for an electro-hydraulic servo system (EHSS) using four control strategies based on LQR formulation: Linear quadratic regulator (LQR) approach for servo systems, linear quadratic integral (LQI), linear quadratic tracki...
Conference Paper
In this study a Neural Network based fault tolerant control is proposed to accommodate oil leakages in a magnetorheological suspension system based in a half car dynamic model. This model consists of vehicle body (spring mass) connected by the MR suspension system to two lateral wheels (unsprung mass). The semi-active suspension system is a four st...
Article
Full-text available
In this work a nonlinear dynamic and mathematic model for the position control of a hydraulic actuator with internal leakage was developed, simulations were made and a basic PID control in order to check the actuator behaviour. An internal leakage emulator was installed bypassing the two chambers of the hydraulic cylinder. Time and position data we...
Article
Full-text available
This study presents the modelling, design and analysis of three controllers applied to the non-linear model of a hydraulic uniaxial seismic shake table. Firstly, the system’s non-linear model is constructed based on the dynamic and mathematical analysis of the hydraulic actuator and the servo valve. Then, three control systems based on the LQR form...
Conference Paper
Industrial hydraulic systems are complex, and show nonlinear dynamic behavior because of their nature. When it is not easy to deal with the nonlinear models, hydraulic systems are usually described by linear or linearized models around operating points. In this work a nonlinear dynamic and mathematic model for the position control of a double rod h...
Poster
Full-text available
Las mesas sísmicas son herramientas desarrolladas por ingenieros mecánicos, electrónicos y civiles para estudiar el comportamiento de estructuras sometidas a terremotos. El pricipal objetivo de una mesa sísmica es reproducir una aceleración de referencia.
Poster
Full-text available
Los actuadores hidráulicos son usados en diversas aplicaciones a nivel industrial por su excelente relación potencia-tamaño, su capacidad de aplicar grandes fuerzas y su alta velocidad de re-spuesta. Los servosistemas hidráulicos combi-nan estas ventajas con la versatilidad del control electrónico para dar lugar a los actuadores más importantes en...
Poster
Full-text available
Los sistemas hidráulicos son ampliamente usados en robótica, mecatrónica y otras aplicaciones industriales debido a su gran confiabilidad y alta precisión . Estos actuadores, debido a su naturaleza, presentan un comportamiento dinámico altamente no lineal y complejo debido a la compresibilidad del fluido hidráulico, la relación flujo-presión de la...
Conference Paper
En este trabajo se desarrolló el modelo dinámico y matemático no lineal para el control de posición de un actuador hidráulico. Se implementaron tres estrategias de control: control PID, control óptimo (LQR) y control por Feedback Linearization. La estrategia de control no lineal Feedback Linerizarion permitió obtener el mejor desempeño dinámico en...
Conference Paper
Axial piston variable displacement pumps (VDAP) are the heart of every hydraulic system, and are they commonly used in the industry for its high capacity, efficiency (volume and total), and good performance in the handling of high pressures and speeds. Faults are usually associated with wear and leakage processes, which cause significant decreases...
Article
Full-text available
Los robots paralelos son utilizados en diversas áreas como la simulación de movimiento, la medicina y la manufactura, entre otras. Se han diseñado y construido numerosos de ellos teniendo en cuenta aspectos como grados de libertad, modelos matemáticos que aproximan la dinámica real del sistema donde actúan, y las estrategias de control para que res...
Article
We discuss trade-offs of different double quantum dot and charge sensor lay-outs using computer assisted design (CAD). We use primarily a semi-classical model, augmented with a self-consistent configuration interaction method. Although CAD for quantum dots is difficult due to uncontrolled factors (e.g., disorder), different ideal designs can still...
Article
Full-text available
In this paper, negative sequence analysis and motor current signature analysis (MCSA) based approaches are applied to perform short fault detection of a single phase winding in an induction motor. The fault detection is carried out using the negative sequence analysis and spectral analysis of current signals. An experimental analysis is presented,...
Article
Full-text available
Quantum dot (QD) layouts are becoming more complex as the technology is being applied to more sophisticated multi-QD structures. This increase in complexity requires improved capacitance modeling both for the design and accurate interpretation of QD properties from measurement. A combination of process simulation, electrostatic simulation, and comp...
Article
Full-text available
We observe resonant tunneling in silicon split gate point contacts implanted with antimony and defined in a self-aligned poly-silicon double gate enhancement mode Si-MOS device structure. We identify which resonances are likely candidates for transport through the antimony donor as opposed to unintentional disorder induced potentials using capacita...
Article
Full-text available
In this paper a comparison between two popular fault detection methodologies is performed for detecting rotor broken bars in an induction motor: Motor Current Signature Analysis (MCSA) and Vibration Analysis. Tests are performed in a 3-phase, 2 hp induction motor dedicated for this type of study. Experiments are performed under different levels of...
Article
We observe resonant tunneling in split gate point contacts defined in a double gate enhancement mode Si-MOS device structure. We determine the capacitances from the resonant feature to each of the conducting gates and the source/drain two dimensional electron gas regions. In our device, these capacitances provide information about the resonance loc...
Article
Full-text available
We present transport measurements of a tunable silicon metal-oxide-semiconductor double quantum dot device with lateral geometry. Experimentally extracted gate-to-dot capacitances show that the device is largely symmetric under the gate voltages applied. Intriguingly, these gate voltages themselves are not symmetric. Comparison with numerical simul...
Article
We present a new portable infrared-based hemispherical scatterometer to rapidly and accurately determine out of plane reflectance function (BRDF) of homogeneous surfaces. The position of the 12 detectors has been selected based on angular distribution scheme of the S4 quadrature of the discrete-ordinates method. The reflectance data obtained from t...
Article
This paper is motivated by the challenge to develop mechanical resonators with fundamental resonant frequencies in the infrasonic range 1-20 Hz that fit onto a single-chip module. In this paper, we present preliminary findings based on finite element modeling (FEM) analysis of designs prepared for fabrication based on SUMMiT VTM surface micromachin...
Conference Paper
An approach for estimating and classifying backlash clearance fault condition in hydraulic actuators is presented. Three networks (ADALINE network, a nonlinear neuron network, and multilayer perceptron network) are trained and applied to an experimental hydraulic system to identify the gap between an actuator pin and a load mass. The networks are t...
Article
The Composite Fuels Laboratory at the University of Oklahoma has designed and built two new fueling stations to produce and provide an alternative fuel, trademark Super-GasTM to be used for vehicle propulsion. Two fluid power systems have been designed and adapted to accomplish these requirements. Both the fluid power system and the automatic contr...
Article
We report low-temperature transport measurements of a silicon metal-oxide-semiconductor (MOS) double quantum dot (DQD). In contrast to previously reported measurements of DQD's in Si MOS structures, our device has a lateral gate geometry very similar to that used by Petta et al. to demonstrate coherent manipulation of single electron spins. This ga...
Article
Thesis (M.S.)--University of Oklahoma, 2001. Includes bibliographical references (leaves 99-104).

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Projects

Projects (4)
Project
Develop a control system based on LQR formulation for a hydraulic uniaxial seismic shake table.
Project
characterize the tobacco drying process by means of thermal diffusion coefficients and drying coefficients.