Algoritmos de navegação de robôs móveis com tração nas quatro rodas utilizando sistemas de localização absolutos GNSS e RTK
DOI:
https://doi.org/10.53660/255.prw414bPalavras-chave:
Geolocalização, Robôs Móveis, GNSS, GPS, ROSResumo
A robótica móvel é uma área em grande crescimento na pesquisa científica e na indústria, devido a sua versatilidade e capacidade de substituir os humanos, especialmente em trabalhos perigosos, e por apresentar melhor desempenho em certas aplicações. Várias delas são em ambientes externos, como em indústrias, aplicações aeroespaciais, petroquímicas, dentre outras. Esse artigo mostra a implementação de um sistema de localização de um robô móvel em ambiente outdoor, utilizando sistema de navegação global por satélite e odometria. Pretende-se, assim, obter uma forma robusta de localização, permitindo uma navegação confiável em diferentes terrenos. Testes foram realizados com a navegação por satélite e a odometria. Percebeu-se que o robô pôde trabalhar bem em ambientes externos capturando corretamente a localização GPS quando comparado com o Google Earth Pro. Com relação a odometria, houve pequenos erros quando o robô se moveu em linha reta, o que aumentou ao se realizar rotações. Isso se deve à característica do funcionamento do robô diferencial 4WD, onde as curvas geram deslizamento das rodas. Além disso, pode‑se demonstrar o bom funcionamento quando feita a fusão dos dados de GNSS, IMU e odometria.
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