Tuning Legged Locomotion Controllers via Safe Bayesian Optimization
| Autor: | Widmer, Daniel, Kang, Dongho, Sukhija, Bhavya, Hübotter, Jonas, Krause, Andreas, Coros, Stelian |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | This paper presents a data-driven strategy to streamline the deployment of model-based controllers in legged robotic hardware platforms. Our approach leverages a model-free safe learning algorithm to automate the tuning of control gains, addressing the mismatch between the simplified model used in the control formulation and the real system. This method substantially mitigates the risk of hazardous interactions with the robot by sample-efficiently optimizing parameters within a probably safe region. Additionally, we extend the applicability of our approach to incorporate the different gait parameters as contexts, leading to a safe, sample-efficient exploration algorithm capable of tuning a motion controller for diverse gait patterns. We validate our method through simulation and hardware experiments, where we demonstrate that the algorithm obtains superior performance on tuning a model-based motion controller for multiple gaits safely. Comment: This paper has been accepted to the 2023 Conference on Robot Learning (CoRL 2023.) The first two authors contributed equally. The supplementary video is available at https://youtu.be/zDBouUgegrU and the code implementation is available at https://github.com/lasgroup/gosafeopt |
| Databáze: | arXiv |
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