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The quality of a model is determined by how closely it mimics the true plant. In this paper we have used the model of customized robotic arm, previously designed by the authors. This paper talks about the consequences of structured uncertainties on the robustness of a controller. We have incorporated structured uncertainties into a system of customized robotic gripper arm by using the method of μ-synthesis...
This paper presents an artificial neural networks (ANN) and proportional-integral-derivative (PID) controller design for electrohydraulic active vehicle suspension model, considering nonlinear dynamics of the actuator. First, the PID controller is used to estimate the suspension control force required for the system stabilization. An ANN configuration is proposed to deal with the nonlinear actuator...
In this paper a multi-objective probabilistic dispatch model is proposed. Fuel thermal units, photovoltaic arrays and wind turbines are considered. The unavailability factors are taken into account. The solution strategy is based on the Monte-Carlo method and a ε-constrained optimization algorithm. The proposed methodology is applied to the Northern Chilean electrical system. The results involve:...
This paper presents a industrial processes simulator compatible with PLC Siemens S7-1200 implemented in LabVIEW software, it consists of two industrial processes (mixer and control level), this system provides help on the practical learning of industrial automation by means of PLC, thanks to its ease of use and performance indicators and existing failures.
Industrial robots are reliable machines for manufacturing tasks such as assembly, welding, painting and palletizing operations. They have been traditionally programmed by an operator using a teach pendant in a point-to-point scheme with limited sensing capabilities such as industrial vision systems and force/torque sensing. Today, industrial robots can react to environment changes specific to their...
We propose the formalism of the Dirac-Delta functions with polynomial argument to measure the probability of call completion (PCC) which plays an importance role in the development and assessment of the telecommunications. The measurement of the PCC is also translated as a rough estimate of the Quality-of-Service of providers of cellular communication. In order to test the model, the Dirac-Delta operator...
In this work, a training module for AVR microcontrollers was developed; the system consists of blocks of input, output, display, communication and programming. Typical practices of modern control are presented, which was made by students of this area. To evaluate system usability, surveys were applied that indicate this module is an integral solution in the teaching — learning process of AVR microcontrollers.
For the learning and teaching process is not enough to count with the right type of methodology according to the objectives. The successful implementation of this is in some cases is linked to the way it is carried out; in other words, the application itself. There are projects in this field which fail to succeed simply because teachers who are new do not have prior experience and make mistakes in...
This paper describes a study about the impact of electrical fast transients (EFT) on performance of communication protocols. A method of fast transient injection is applied in an experimental CAN network with the objective of verifying an impact on jitter and how it influences the communication process. An experiment was conducted in laboratory with a model of typical CAN network configuration with...
This article describes the preparation of a Wi-Fi wireless network in production system, with intrusion detection systems Snort and Kismet; for subsequent evaluation under attack. Through Penetration Testing with Backtrack 5 R3 using Fern WiFi Cracker and Ettercap to monitor response reaction of IDSs. Once the attacks are completed, the results are analyzed, in terms of the captured traffic by the...
In this paper an alternative rehabilitation of fine motor skills in upper extremity is proposed by using haptic force feedback devices. The proposed feedback system handles textures and movements in a 3D graphical environment specially designed to develop abilities and skills that improve the motor performance of the patient. The system is implemented through bilateral interaction of Unity3D software...
This article describes the design and implementation of an electronic prototype of high availability, that would facilitate the residential Internet user to have and evaluate using an interface graphic description highly reliable and detailed network parameters as bandwidth is proposed, delay, jitter, throughput and service downtime without using a commercial network manager. This way you could make...
In this paper, a simulated study of three different control strategies; Linear Quadratic Regulator (LQR), Integer order PID and Fractional order PID (FOPID), is performed in order to stabilize an inverted pendulum on a cart. First, a nonlinear model of the cart-pendulum system is presented which is used later in the simulations. The tuning parameters of all three controllers are obtained using the...
On this paper, worldwide Digital TV Standards (TDT) are reviewed as well as the approach and needs for point to area propagation modeling currently used worldwide to predict TDT broadcasting coverage. One of the models currently used for coverage calculations, the deterministic ITM (Irregular Terrain Model — Longley-Rice) based on Technical Note 101 Vol-I and II, as well as the empirical ITU-R-P1546-5...
The author, as part of a project to study and develop a proposal based on telemedicine, made a first study on the state of the art (both in Latin America and nationally); and it is found that, despite some isolated efforts of some services and health centers in general, do not yet exist in Chile a policy or plan Telemedicine officially declared. As a result of research, data collection, and developed...
Inferring foliar temperatures is motivated by the high cost related to measure each plant's temperatures in a vineyard. Foliar temperature is correlated with the plants water potential, which allows farmers to take irrigation decisions. In order to deal with this situation, we utilized information obtained from several temperature infrared sensors integrated into a motor vehicle that runs a vineyard...
Este artículo abarca un estudio del análisis hiperespectral en el proceso de fermentación de granos de cacao violeta. La aplicación de técnicas de procesamiento de imágenes hiperespectrales en el cacao es escasa. Este artículo presenta un estudio basado en el cálculo de índices espectrales, encontrando una correlación con los parámetros bioquímicos que indican una correcta evolución de la fermentación...
The strong rising on demand for agricultural crop quantity and quality, beyond the growing concern of non-point pollution, are requiring higher levels on agricultural production systems efficiency and environmental safety. Measurement of the nitrogen (N) on cultivation is one successful method of increase the agricultural production systems. Nitrogen application can increase productivity, decrease...
Background: Interest in the integration of the agile software development process (ASDP) and user-centred design (UCD) has grown over the last decade. However, there are not many papers that study this issue holistically and uncover the current state of this integration. Objective: This study sets out to answer the following research question: What is the current state of integration between agile...
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