力推定に基づくアドミタンス制御による車輪型二足ロボットの頭部安定化
Head Stabilization for Wheeled Bipedal Robots via Force-Estimation-Based Admittance Control
不整地での頭部振動を抑えるため、6自由度車輪型二足ロボットの接地力をモデルベースで推定し、アドミタンス制御で地形適応性と頭部安定性を高めた。
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著者: Tianyu Wang, Chunxiang Yan, Xuanhong Liao, Tao Zhang, Ping Wang, Cong Wen, Dingchuan Liu, Haowen Yu, Ximin Lyu
分類: cs.RO
原文アブストラクト
Wheeled bipedal robots are emerging as flexible platforms for field exploration. However, head instability induced by uneven terrain can degrade the accuracy of onboard sensors or damage fragile payloads. Existing research primarily focuses on stabilizing the mobile platform but overlooks active stabilization of the head in the world frame, resulting in vertical oscillations that undermine overall stability. To address this challenge, we developed a model-based ground force estimation method for our 6-degree-of-freedom wheeled bipedal robot. Leveraging these force estimates, we implemented an admittance control algorithm to enhance terrain adaptability. Simulation experiments validated the real-time performance of the force estimator and the robot's robustness when traversing uneven terrain.
