Predictive Control with Indirect Adaptive Laws for Payload Transportation by Quadrupedal Robots
- URL: http://arxiv.org/abs/2603.08831v1
- Date: Mon, 09 Mar 2026 18:43:31 GMT
- Title: Predictive Control with Indirect Adaptive Laws for Payload Transportation by Quadrupedal Robots
- Abstract summary: This paper develops a novel hierarchical planning and control framework for robust payload transportation by quadrupedal robots.<n>An indirect adaptive law estimates the unknown parameters of the reduced-order (template) locomotion model under varying payloads.<n>The robot successfully manages dynamic payloads with 73% of its mass on rough terrains.
- Score: 36.62645789321095
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: This paper formally develops a novel hierarchical planning and control framework for robust payload transportation by quadrupedal robots, integrating a model predictive control (MPC) algorithm with a gradient-descent-based adaptive updating law. At the framework's high level, an indirect adaptive law estimates the unknown parameters of the reduced-order (template) locomotion model under varying payloads. These estimated parameters feed into an MPC algorithm for real-time trajectory planning, incorporating a convex stability criterion within the MPC constraints to ensure the stability of the template model's estimation error. The optimal reduced-order trajectories generated by the high-level adaptive MPC (AMPC) are then passed to a low-level nonlinear whole-body controller (WBC) for tracking. Extensive numerical investigations validate the framework's capabilities, showcasing the robot's proficiency in transporting unmodeled, unknown static payloads up to 109% in experiments on flat terrains and 91% on rough experimental terrains. The robot also successfully manages dynamic payloads with 73% of its mass on rough terrains. Performance comparisons with a normal MPC and an L1 MPC indicate a significant improvement. Furthermore, comprehensive hardware experiments conducted in indoor and outdoor environments confirm the method's efficacy on rough terrains despite uncertainties such as payload variations, push disturbances, and obstacles.
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