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The design of a physical interface between resident smart mobile devices with Android Operating System and Sensor Networks (WSN) is presented. Through the Open Accessory protocol available on Android, the different layers of software available under the Development Kits are evaluated by identifying access to the sensors available on the device. Finally functional tests are performed with a Zig Bee...
Polyhydroxybutyrate (PHB), a biodegradable polymers of polyhydroxyalkanoates (PHAs) family's, has gained importance in the industrial field in recent years by its physicochemical properties and has been considered as a possible substitute for petroleum-based plastics such as polyethylene and polypropylene. This work contributes to the study of the growth of Cupriavidus necator DSM 545 basically oriented...
This work presents a topology for a pulsed current power supply suitable for particle accelerator applications. The current pulse is generated from the energy provided by a structure tied to the electrical network and by one connected to a capacitor bank; which is used as local energy storage. By using both structures, disturbances on the electrical network are minimized, since the power obtained...
In this paper a mechanical sensorless control strategy for controlling a permanent magnet synchronous generator used in a variable speed wind energy conversion system is proposed. In order to track the wind turbine maximum power point (MPPT) an observer-based generator torque control scheme is designed. The control law is built by using estimates of the mechanical variables. These estimates are obtained...
This paper deals with switched linear systems with persistent disturbances and under arbitrary switching. For these systems, a systematic componentwise ultimate bound computation method has been previously developed. This method does not employ a Lyapunov function, yet yields a mixture of ellipsoidal and polyhedral sets, which are the type of level sets obtained via complex polytopic Lyapunov functions...
This paper proposes a control strategy for the boost dc-dc converter that combines a sliding mode control law with feedforward compensation techniques. The main objective is the improvement of the system's performance in presence of perturbations. In particular, the case where the converter is loaded with a constant current type load and supplied from a slow varying voltage source is considered. To...
This paper describes a technique to object segmentation from Side Scan Sonar (SSS) acoustical data. The current techniques consume a great deal of computational resources to accurately carry out objects segmentation. They also involve the tuning of many parameters to obtain good quality images. This is due to the handling of the large data volume generated by these devices and environmental fluctuations...
A fiber optic frequency domain Fizeau Interferometer (FFI) is a photonic instrument of extremely high resolution, so it can be used as a micrometric distances sensor. Relevant information is modulated in the spectrum and usually it requires hard efforts for demodulation In this work we present a method for automatic processing of these spectra without user intervention. Interfering cavity length is...
In this article an investigation is presented, where factors influencing temperature and humidity ariables in a temperature controlled chamber are analyzed. The objective of this study is to determine whether the humidity can be controlled independently of temperature in order to implement a change in the system to stabilize the relative humidity. After showing the theoretical background, the changes...
A digitalization scheme for multi-band GNSS receivers employing a single A/D converter for all signals is presented. Theoretical analyses are carried out, to compute the degradation in post-correlation signal to noise ratio due to joint filter and digitalization, in comparison to a classic scheme with separate A/D converters for each band. As a case study, a GPS and GLONASS L1 receiver is considered...
Advanced Driver Assistance Systems (ADAS) are a result of many years of research with the main motivation of reducing the amount and the severity of traffic accidents. The use of cameras is now crucial for many of these systems, such as Lane Departure Warning Systems (LDWS). This paper proposes a method to estimate in advance the change of curvature of a road through vanishing points computed from...
A complete characterization of the behavior in human-robot interaction (HRI) includes both: the behavior dynamic and the control laws that characterize as the behavior is regulated with the perception information. In this way, the present work proposes a leader-follower coordinated control that allows to include special dynamic behaviors between humans. Additionally these have been supported by social...
In this paper presents a new algorithm for lossy image compression using a transformed associated graph Johnson is presented. Determining a dynamic threshold is implemented. The results of standard images are presented, establishing its advantages and disadvantages in relation to the JPEG standard. And it opens the door to the development of new image compression transformed from regular distance...
The increasing trend towards delegating complex tasks to artificial agents in safety-critical socio-technical systems makes its performance monitoring of vital importance. In this work a probabilistic approach to online monitoring is proposed on the basis of optimal action selection and Twin Gaussian processes (TGP). A metric built upon the Kullback-Leibler (KL) distance is used to compute the difference...
Inductances of a multiple coupled circuit machine model are calculated from its magnetic equivalent circuit. The modeled considers an electric machine with semi-closed slots.
In the past few years, the use of Complementary Set of Sequences (CSS) had a considerable impact on several applications, such as: OFDM or quasi-synchronous CDMA communication systems, multiuser active sensing systems, or the development of non-destructive testing (NDT). Their use is attractive due to the ideal aperiodic correlation properties of the sequences. There are efficient architectures to...
The calculation of the inductances of a multiple coupled circuit machine model based on its magnetic equivalent circuit is presented in this paper. This approach allows to take into account the winding distribution as well as core and airgap saliencies. In order to validate the proposal, induction machine inductances were calculated and compared with those obtained by the winding function approach...
A geometric approach of the well known winding-function approach for the calculation of electric machine inductances is presented in this paper. An elementary induction machine is used in order to validate the proposal.
In this paper, a model for target tracking with data fusion taken from inertial and altimeter sensors for a quadcopter is proposed. With some environmental restrains and using INS/altitude data, the new position and template changes are predicted. The model dynamics is estimated on the basis of the specifications of the UAV IRIS+, with a pointgrey blackfly camera (PGE-13E4C-CS), a gimbal (TAROT 2D),...
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