05.1 - Graduação (UACSA)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2909
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2 resultados
Resultados da Pesquisa
Item Sistema de powertrain de um veículo elétrico(2022-10-06) Florentino, João Pedro de Sá; Méllo, João Paulo Ramos Agra; http://lattes.cnpq.br/2430890141645755; http://lattes.cnpq.br/9987759193674873The automotive vehicle market is currently experiencing an advance in the development of electric vehicles, a market trend driven by the technological advancement of this sector and by a need to reduce pollution caused by automotive vehicles. In this way, it is necessary to develop a mathematical and simulation model that is capable of making predictions about the behavior of the vehicle for specific situations. In this work, a model for the powertrain system applicable to electric vehicles was developed, with mathematical models of vehicle dynamics, electric motors and magnetic flux and speed control loop. To this end, a literature review was carried out on such points. The mathematical models developed were used in simulation environments to verify the behavior of the developed control system, as well as the reaction of the powertrain system to specific situations common to the use of electric vehicles. The results show that the mathematical models developed realistically represent the dynamic behavior of electrical machines, as well as the dynamic behavior of vehicles and satisfactory responses of the control loop. Thus, it can be concluded that the models developed meet the requirements proposed at the beginning of the work.Item Projeto de uma caixa de redução por engrenagens cilíndricas retas para um veículo Baja SAE(2021-12-10) Andrade, Douglas Santana; Farias Filho, João Gutemberg Barbosa de; http://lattes.cnpq.br/0718103459959119; http://lattes.cnpq.br/6243297653363605The system designed by the present work is a gearbox that uses straight cylindrical gears to reduce the rotation speed of the engine and increase the torque transmitted to the wheels. The design is made based on the maximum stresses present in the parts. These tensions will serve as a parameter to choose the materials to make the gears, shafts, keys and select the bearings. The study of the tensions present in the axes is done through the calculation of bending moment and shear force. The gears are designed according to the AGMA standard for cylindrical spur gears. The selection of the bearings is made by comparing the result of the calculation of the theoretical load on the bearing and the parts present in the catalogs. The material to be used as braces is selected by comparing the stress results with the tensile strength limit of each material. Throughout the calculation of the geometry of the parts, it is noticed that it is possible to design the box to be compact and resistant so that it has an easy installation on the vehicle.