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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Controle n?o-linear do ve?culo omni-direcional via servovis?o e sensor inercial

Lasevitch, Henrique Ricardo Rocha 21 August 2014 (has links)
Made available in DSpace on 2015-04-14T13:56:32Z (GMT). No. of bitstreams: 1 462535.pdf: 2831098 bytes, checksum: 68e2e14cae00038d54ccc16f10fe2911 (MD5) Previous issue date: 2014-08-21 / Auto guided vehicles are robots capable of moving in an intelligent way in order to accomplish different tasks. Nowadays, researches not only aiming industry operation, but also vehicles that may act in hostile environments, either complex or even with more skills and strenght than a human being are being developed everywhere in the world. These vehicles need not only a smart way of displacement, but also need sensors capable of sensing changes in the environment and locate the device with success. This work develops an Omni-Directional vehicle - a vehicle capable of displacement in an XY plane without changing its original orientation and also capable of rotating about its own axis - going from the development of its mathematical model to the control strategy of the trajectory, going through sensoring via Visual Servoing and inertial sensors fused with a Kalman Filter. Also, a prototype was used in experiments for comparison with simulations performed in a virtual environment. / Ve?culos auto guiados s?o rob?s capazes de se deslocar de maneira inteligente afim de cumprir diversas tarefas. Atualmente, pesquisas voltadas n?o somente para a opera??o em ind?strias, mas tamb?m para ve?culos que possam atuar em ambientes in?spitos, complexos ou mesmo com mais agilidade e for?a que um ser humano est?o sendo desenvolvidas em toda a parte do mundo. Esses ve?culos necessitam n?o s? de uma maneira inteligente de se locomover, mas precisam tamb?m de sensores capazes de perceber mudan?as no ambiente e realizar sua localiza??o com sucesso. Este trabalho desenvolve um ve?culo Omni-Direcional - ve?culo capaz de se movimentar em um plano XY mantendo sua orienta??o inicial e tamb?m capaz de rotacionar em seu pr?prio eixo - tratando desde seu modelamento matem?tico, at? o controle de sua trajet?ria, passando pelo sensoriamento utilizando um sensor de vis?o e um sensor inercial com um Filtro de Kalman Extendido para realizar a fus?o destas informa??es. Ser? aplicado um controlador n?o-linear de tempo ?timo denominado PTOS em cada um de seus graus de liberdade. Para isso, um prot?tipo foi utilizado para ensaios reais e compara??o com simula??es feitas em um ambiente virtual.

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