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1
tesis de grado
Publicado 2018
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This paper entitled "Optimization of the synthesis of a 6-bar Stephenson I mechanism for a knee prosthesis using genetic algorithms and Matlab grip", was developed using the method of genetic algorithms to design of articulated four bar mechanisms applied to this system of six bars. To optimize the mechanism five corresponding prescribed positions defined five positions of the femur, of these positions ten points precision five belonging to the mechanism 1, and five belonging to the mechanism 2. Stephenson I, mechanism was taken as the composition of two mechanisms articulated four separate bars each other, thus applying the programming code optimization synthesis by genetic algorithms for four-bar linkage developed in Matlab, each; with a randomly created population, based on the domain of each variable (length of the links and angle of movement) of eight thousand individuals, and encod...
2
artículo
Publicado 2021
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The objectives of this workshop are: 1). Train participants in the handling of Input Bar, Views, Spreadsheet, Options menu, Slider, Text, Scroll graphical view, Intersection, Perpendicular and some commands of the GeoGebra Classic 5 program; 2). Facilitate significant learning of the formal concept of limit of a real function at a number and at infinity and, 3). Develop the ability to communicate and represent mathematical ideaswith limit of real functions. Development: We explore the GeoGebra Views, tools and commands that we will use. We present an Activity that contains the intuitive and formal definitions of limit of a real function at a number and at infinity, examples on limit of functions to solve and questions oriented to the intuitive concept and later to a dynamic construction of the formal concept of limit, with GeoGebra support. We proceed in a similar way with the concept li...
3
tesis de grado
Publicado 2019
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La presente tesis tiene como objeto el diseño estructural de un Estacionamiento Subterráneo de Concreto Reforzado con barras de GFRP, con dos sótanos y un parque sobre la estructura, ubicado en La Plazuela Gonzales Prada (Ex-Malvinas), en el Distrito de Trujillo y Provincia de Trujillo departamento La Libertad, así mismo dar a conocer los procedimientos de diseño con GFRP con la Norma ACI 440.1R, y escrutar su factibilidad en el diseño de los elementos de los diferentes elementos estructurales teniendo como refuerzo las barras de “Polímero Reforzado con Fibra de Vidrio”; consecuentemente desarrollar las hojas de cálculo para el diseño estructural utilizando las barras de GFRP. El diseño estructural ha sido desarrollado a partir de un diseño arquitectónico realizado en un área 50 m x 49m (2450m2 aprox.); sobre un suelo de perfil tipo S2 (capacidad portante de 3.43 kg/c3)....
4
tesis de maestría
Publicado 2019
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El presente trabajo de investigación realiza una descripción detallada de los grupos electrógenos síncronos, teniendo en cuenta las condiciones necesarias para realizar la sincronización y transferencia automática, también mencionaremos las ventajas de operar varios generadores de corriente alterna en paralelo. El sistema de transferencia estará formado por dos partes principales. 1.- La primera parte será el Controlador Lógico Programable que cumple la función inteligente del sistema, la etapa de control ordena el arranque de los grupos electrógenos de emergencia, su sincronización, puesta en paralelo y transferencia a la barra común, la conexión para alimentar la carga y la protección de los generadores. 2.- La segunda parte será el sistema de fuerza, que estará formado por los interruptores termomagnéticos, interruptores motorizados y toda su periferia, el sistema d...
5
artículo
Publicado 2018
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This paper proposes a procedure to minimize electrical losses present in industrial systems, through a specific program developed for this purpose, based on Genetic Algorithm, and written using MATLAB instructions.The minimization is realized with the placement of shunt capacitors connected to the buses. For validation of the proposed method, it is considered accuracy and speed, and the developed program´s results are compared with the results produced by traditional programs. The program avoids leading power factor at the bus connected with the power distribution company and the user may determine buses where he does not want the installation of capacitors. The Genetic Algorithm's fitness, responsible for guiding the optimization process, is the active power loss. Finally, the program is applied to minimize active losses present at an industrial system, 38 buses.
6
artículo
Publicado 2018
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This paper proposes a procedure to minimize electrical losses present in industrial systems, through a specific program developed for this purpose, based on Genetic Algorithm, and written using MATLAB instructions.The minimization is realized with the placement of shunt capacitors connected to the buses. For validation of the proposed method, it is considered accuracy and speed, and the developed program´s results are compared with the results produced by traditional programs. The program avoids leading power factor at the bus connected with the power distribution company and the user may determine buses where he does not want the installation of capacitors. The Genetic Algorithm's fitness, responsible for guiding the optimization process, is the active power loss. Finally, the program is applied to minimize active losses present at an industrial system, 38 buses.
7
tesis de grado
Publicado 2019
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The present work entitled "Synthesis of a four-link mechanism for a rest chair using the Newton-Raphson method", was developed using the Freudenstein equation to obtain the optimal dimensions of a four-bar mechanism in a rest chair, and ensure stability in the extreme positions of the chair. The angles 1, 2 and 4 of the links of the mechanism were taken based on the ergonomics of a resting chair and taking into account the anatomy of the human body (back, legs and arms) The synthesis of the mechanism was proposed in the Freudenstein equation for a fourlink mechanism, to which the least-squares method was applied to minimize the error in the desired positions (2 and 4) of the links. A system of non-linear equations is obtained by applying the partial derivative with respect to the k constants of Freudenstein to the function that defines the positions of the mechanism. This system of nonli...
8
tesis de maestría
Publicado 2025
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En esta tesis se estudió el algoritmo de optimización de Recocido Simulado (RS), analizando sus características principales, variantes, y los parámetros que afectan sus resultados. Además, se aplicó una de las variantes del RS en el contexto de la reconfiguración de redes de distribución. La reconfiguración de redes de distribución es un problema complejo debido al gran número de configuraciones posibles, cuyo análisis resulta inviable por su alto costo computacional. Por ello, se emplearon algoritmos inteligentes, capaces de reducir las soluciones a explorar y encontrar una solución óptima o cercana con menor costo. Este estudio se centró en algoritmos adaptativos, como el recocido simulado, analizando sus limitaciones y áreas de mejora en escenarios de optimización complejos. Se desarrolló una variante denominada Recocido Simulado Mejorado con Enfriamiento Híbrido (I...
9
tesis de grado
Publicado 2018
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This work entitled "design of a semi-automatic mechanical system to perform physiotherapy exercises for the knee", it was developed using the genetic algorithms method, for the design of the four-bar mechanism. First the dimensions of the lower extremities were found for a person of 1.60 m, for which the book of anthropometric dimensions of the Latin American population and the model of the segments of the human body as a function of height were taken as a reference, based on This information was graphed in the GeoGebra software, and then simulated to obtain the 6 knee positions in flexion and extension in the four-bar mechanism. With the method of optimization of synthesis by genetic algorithm, applied to the generation of movement for six positions of a mechanism of four bars, it was achieved thanks to the Matlab program for it was generated a population of 1000 individuals randomly an...
