効率的な協調設計のための事前学習・微調整フレームワーク：四足ロボットパルクールの事例研究
Pretraining-finetuning Framework for Efficient Co-design: A Case Study on Quadruped Robot Parkour
四足ロボットの脚長などの機構と制御方策を同時最適化する事前学習・微調整フレームワークを提案し、パルクール能力を効率的に向上させる。
著者: Ci Chen, Jiyu Yu, Haojian Lu, Hongbo Gao, Rong Xiong, Yue Wang
分類: cs.RO
原文アブストラクト
In nature, animals with exceptional locomotion abilities, such as cougars, often possess asymmetric fore and hind legs. This observation inspired us: could optimizing the leg length of quadruped robots endow them with similar locomotive capabilities? In this paper, we propose an approach that co-optimizes the mechanical structure and control policy to boost the locomotive prowess of quadruped robots. Specifically, we introduce a novel pretraining-finetuning framework, which not only guarantees optimal control strategies for each mechanical candidate but also ensures time efficiency. Additionally, we have devised an innovative training method for our pretraining network, integrating spatial domain randomization with regularization methods, markedly improving the network's generalizability. Our experimental results indicate that the proposed pretraining-finetuning framework significantly enhances the overall co-design performance with less time consumption. Moreover, the co-design strategy substantially exceeds the conventional method of independently optimizing control strategies, further improving the robot's locomotive performance and providing an innovative approach to enhancing the extreme parkour capabilities of quadruped robots.
