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This article discusses the design and construction of a collaborative robotic torso with two arms that analyzes a bolted connection in a work cell as a didactic process. The handler is made up of two anthropomorphic arms, each one with seven degrees of freedom (DOF). Inverse kinematics for each redundant handler was developed by solving off-line genetic algorithms. The automatic process of a bolted...
In the present project it is focused on patients Amotrophy Lateral Sclerosis (ALS), so these patients do not have control of their motor functions therefore are unable to move on their own, requiring third party assistance to move with his wheelchair. Patients of Amyotrophic Lateral Sclerosis do not lose their cognitive ability, which is why you can use it to control his wheelchair as part of a computer...
Pollutants inside at houses are smoking, gas combustion, use of solvents, household cleaning chemicals, emissions from building materials, and contamination of the exterior aggravates the inside of the house. In this article, we conducted a study to select the best air purifier equipment for an urban house. The selection was carried out by applying the analytic hierarchy process (AHP) methodology...
In this paper, we propose a control model based on NCS theory to solve the vehicle-following problem, which presents both issues: the difficulty in the identification process and a lossy network. To deal with network losses, we use a mode dependent Markov jump linear filter coupled with a statefeedback controller. To handle parameter uncertainty, a polytopic representation of the car model is presented...
This paper presents results of the use of the N4SID method, belonging to the subspaces identification techniques, in its deterministic case, applied to a prototype of a crusher, where this unit operation is part of the mineral processing chain. A mathematical model in discrete-time linear state space system is obtained, where the result indicates that the estimation of the model is satisfactory for...
This paper proposes to optimize wind energy extraction through a hybrid PID-Fuzzy pitch control strategy for wind turbines. The modeling of a 20 kW wind turbine will be reviewed, in which three strategies of pitch control, PID, Fuzzy and Hybrid PID-Fuzzy, will be implemented, comparing the results of the different control strategies.
Consider the problem of H2 filtering of a linear system in a networked control system scenario. More precisely, the communication between the system and the filter is accomplished through a multi-hop network where packet loss, modeled by a Markov chain with a Bernoulli distribution, may occur. The purpose of this paper is to investigate the trade-off between the network resource saving and the performance...
At present time Universidad de Las Américas (UDLA) is processing a huge amount of information between their campuses. An alternative network technology can provide communications to main offices and data center. Wireless networks have limits for area coverage and bit rates including spectrum licensing. FSO technology (Free Space Optics) allows configuring a dedicated link with high bit rates and no...
We present a virtual system for strengthening of lower limbs focused on children with cerebral palsy, in the implementation we use sensors that allow to obtain the angular velocity and rotation of direction of the bicycle, for the design of the virtual environment we use the Labview software, in which two scenarios of different difficulty are created to visualize in virtual form the trajectory that...
This paper focus on the robustness analysis inverse problem of linear electric circuits. The aim is to determine what amount of variations of the input parameters can an electrical or electronic system tolerate, such that the output variables (e.g. conducted noise) does not exceed an upper bound in the frequency domain. Based on the well-known theory of robust control and convex optimization, we propose...
The implementation of devices developed in microstrip technology is commonly found in radio frequency and microwave communications, where it has evolved with a variety of applications, among which fast response filters stand out. In this study, we present the design and behavior of a microstrip Hairpin bandpass filter for a frequency of 2.45 GHz, with a bandwidth greater than 100 MHz, and an insertion...
This paper proposes a procedure for the calculation of losses and energy efficiency of synchronous reluctance machines according to IEC standard 60034-2. This machine does not have norms and standardized procedures for the calculation of efficiency and losses, it is for that reason that the IEC 60034-2-1 standard for synchronous machines is adapted through the different methods that the standard offers,...
The problem of the early detection of forest fires in isolated areas is studied, as is the case of Torres del Paine National Park, as an area of very high tourist interest, an economic engine of the Magallanes region, and currently a world reserve of The Biosphere according to UNESCO. No communication connectivity, and presents important logistical challenges to deploy and install equipment, with...
This article describes a monitoring system that uses wearable devices for vital signs monitoring through clothes and transferring them wirelessly to an Android mobile interface. Allowing emissions of emergency signals when vital signs exceed the nominal values. The reliability of the implemented clothing has been determined with collected data on experimental tests and compared with values from medical...
The developed application allows to have consolidated graphic information of people with disabilities that are located in potential risk areas such as Cotopaxi Volcano. The information is indicated in real time on georeferenced maps and details the person (names, age, sex), the location of the dwelling, type of disability. This information is valuable and ends the realization of the location of these...
We present a mobile application for the vowels learning of in children with SD, the methodology of the application design and the description of utilization are explained. The application was used by 4 children for one month (5 sessions per week), the results show that the application is an aid to primary teachers in teaching vowels in children with DS.
Automatic detection of physiological changes in leaves using close range hyperspectral data is becoming a new tool for biologists. Given the geometry of leaves, the reliability of spectral data strongly depends on a careful spectral and geometric calibrations. In this paper, we evaluate the effect of several calibration approaches on automatic classification of leave regions. For our experiments we...
The acoustic wave propagation in solid structures has a specific impulse response pattern, that allows to identify the impact location over a structure. By using piezoelectric transducers, the vibration on the surface is translated into a voltage signal which is later analyzed to determine the position of the impact. This technique has the potential to transform any solid object into an interactive...
Passivity based control (PBC) method is an energy based control method. The total energy of the system is expressed as a sum of stored energy and dissipated energy. This technique deals with energy shaping as well as damping injection and tracking which is achieved via Hamiltonian operator. Passivity based control is developed by satisfying dissipation matching condition. In this paper the types of...
During the past thirty years there has been enormous interest in the detection of odours by means of electronic instrumentation. This has led to the development of devices called ‘electronic noses’ that typically include an array of selective sensors with a pattern recognition software. The present work describes the design process of an electronic nose prototype for explosive detection. The implementation...
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