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- W3155758913 abstract "Model-free reinforcement learning (RL) for legged locomotion commonly relies on a physics simulator that can accurately predict the behaviors of every degree of freedom of the robot. In contrast, approximate reduced-order models are commonly used for many model predictive control strategies. In this work we abandon the conventional use of high-fidelity dynamics models in RL and we instead seek to understand what can be achieved when using RL with a much simpler centroidal model when applied to quadrupedal locomotion. We show that RL-based control of the accelerations of a centroidal model is surprisingly effective, when combined with a quadratic program to realize the commanded actions via ground contact forces. It allows for a simple reward structure, reduced computational costs, and robust sim-to-real transfer. We show the generality of the method by demonstrating flat-terrain gaits, stepping-stone locomotion, two-legged in-place balance, balance beam locomotion, and direct sim-to-real transfer." @default.
- W3155758913 created "2021-04-26" @default.
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- W3155758913 date "2021-04-20" @default.
- W3155758913 modified "2023-09-27" @default.
- W3155758913 title "GLiDE: Generalizable Quadrupedal Locomotion in Diverse Environments with a Centroidal Model" @default.
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- W3155758913 doi "https://doi.org/10.48550/arxiv.2104.09771" @default.
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