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- W4385507580 abstract "Humanoid robots are expected to navigate in changing environments and perform a variety of tasks. Frequently, these tasks require the robot to make decisions online regarding the speed and precision of following a reference path. For example, a robot may want to decide to temporarily deviate from its path to overtake a slowly moving obstacle that shares the same path and is ahead. In this case, path following performance is compromised in favor of fast path traversal. Available global trajectory tracking approaches typically assume a given -- specified in advance -- time parametrization of the path and seek to minimize the norm of the Cartesian error. As a result, when the robot should be where on the path is fixed and temporary deviations from the path are strongly discouraged. Given a global path, this paper presents a Model Predictive Contouring Control (MPCC) approach to selecting footsteps that maximize path traversal while simultaneously allowing the robot to decide between faithful versus fast path following. The method is evaluated in high-fidelity simulations of the bipedal robot Digit in terms of tracking performance of curved paths under disturbances and is also applied to the case where Digit overtakes a moving obstacle." @default.
- W4385507580 created "2023-08-03" @default.
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- W4385507580 date "2023-07-31" @default.
- W4385507580 modified "2023-09-27" @default.
- W4385507580 title "Overtaking Moving Obstacles with Digit: Path Following for Bipedal Robots via Model Predictive Contouring Control" @default.
- W4385507580 doi "https://doi.org/10.48550/arxiv.2308.00119" @default.
- W4385507580 hasPublicationYear "2023" @default.
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