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arXiv 2610.12972cs.RO

面向未知负载下人形机器人的自适应全身模型预测控制(MPC)与最优姿态规划

Adaptive Whole-Body MPC with Optimal Posture Planning for Humanoid Robots under Unknown Payloads

VinRobotics;Vingroup;Center for AI Research (CAIR), VinUniversity(VinUniversity人工智能研究中心(CAIR))

Manh Cuong Nguyen, Duc Cuong Vu, Viet Anh Vu, Duc Tuan Pham, Toan Nguyen, Minh Hiep Phung, Ngo Anh Vien, Minh Nhat Vu

AI总结:

本文针对人形机器人未知负载下的平衡问题,提出整合质心MPC、自适应模糊平衡控制器与最优姿态规划器的自适应全身控制架构,经实验验证可提升平衡鲁棒性并降低跟踪退化。

摘要:

执行搬运和物料处理任务的人形机器人必须在未知且变化的负载下保持平衡,但负载不确定性会显著影响全身动力学,可能导致传统控制器失稳。本文提出一种自适应全身控制架构,整合三个组件:(i)生成动态可行参考运动的质心模型预测控制器(MPC);(ii)自适应模糊平衡控制器,通过在支撑腿关节分配校正力矩,补偿负载引发的模型失配;(iii)基于三重积分器模型构建的基于航路点的最优姿态规划器,生成满足质心(CoM)稳定性约束、关节极限及全身可行性要求的平滑坐站与站坐轨迹。这些组件协同实现了在显著负载不确定性下的稳定下放、抓取、提升、搬运和放置行为。大量仿真与硬件实验表明,与非自适应基线相比,所提框架提升了姿态转换及提升任务中的平衡鲁棒性,降低了跟踪退化。

英文摘要:

Humanoid robots performing lifting and material-handling tasks must maintain balance despite unknown and varying payloads. However, payload uncertainty significantly affects whole-body dynamics and may destabilize conventional controllers. We propose an adaptive whole-body control architecture that integrates three components: (i) a centroidal model predictive controller (MPC) that generates dynamically feasible reference motions, (ii) an adaptive fuzzy balance controller that compensates for payload-induced model mismatch by generating corrective torques distributed across the supporting-leg joints, and (iii) a waypoint-based optimal posture planner built on a triple-integrator model that produces smooth sit-to-stand and stand-to-sit trajectories satisfying center-of-mass (CoM) stability constraints, joint limits, and whole-body feasibility requirements. Together, these components enable stable lowering, grasping, lifting, carrying, and placing behaviors under significant payload uncertainty. Extensive simulation and hardware experiments demonstrate that the proposed framework improves balance robustness and reduces tracking degradation during posture transitions and lifting tasks compared to non-adaptive baselines.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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