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- W4384519105 abstract "This letter addresses the problem of traversing through unknown, tilted, and narrow gaps for quadrotors using Deep Reinforcement Learning (DRL). Previous learning-based methods relied on accurate knowledge of the environment, including the gap's pose and size. In contrast, we integrate onboard sensing and detect the gap from a single onboard camera. The training problem is challenging for two reasons: a precise and robust whole-body planning and control policy is required for variable-tilted and narrow gaps, and an effective Sim2Real method is needed to successfully conduct real-world experiments. To this end, we propose a learning framework for agile gap traversal flight, which successfully trains the vehicle to traverse through the center of the gap at an approximate attitude to the gap with aggressive tilted angles. The policy trained only in a simulation environment can be transferred into different domains with fine-tuning while maintaining the success rate. Our proposed framework, which integrates onboard sensing and a neural network controller, achieves a success rate of 87.36% in real-world experiments, with gap orientations up to <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink><tex-math notation=LaTeX>$60^circ$</tex-math></inline-formula> . To the best of our knowledge, this is the first letter that performs the learning-based variable-tilted narrow gap traversal flight in the real world, without prior knowledge of the environment." @default.
- W4384519105 created "2023-07-18" @default.
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- W4384519105 date "2023-09-01" @default.
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- W4384519105 title "Learning Agile Flights Through Narrow Gaps with Varying Angles Using Onboard Sensing" @default.
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- W4384519105 doi "https://doi.org/10.1109/lra.2023.3295655" @default.
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