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Accelerating Model Predictive Control for Legged Robots through Distributed Optimization by Amatucci, Lorenzo; Turrisi, Giulio; Bratta, Angelo; Barasuol, Victor; Semini, Claudio is a scholarly article available to read on EtoBox.

What is Accelerating Model Predictive Control for Legged Robots through Distributed Optimization about?

This paper presents a novel approach to enhance Model Predictive Control (MPC) for legged robots through Distributed Optimization. Our method focuses on decomposing the robot dynamics into smaller, parallelizable subsystems, and utilizing the Alternating Direction Method of Multipliers (ADMM) to ensure consensus among them. Each subsystem is managed by its own Optimal Control Problem, with ADMM facilitating consistency between their optimizations. This approach not only decreases the computational time but also allows for effective scaling with more complex robot configurations, facilitating the integration of additional subsystems such as articulated arms on a quadruped robot. We demonstrate, through numerical evaluations, the convergence of our approach on two systems with increasing complexity. In addition, we showcase that our approach converges towards the same solution when compared to a state-of-the-art centralized whole-body MPC implementation. Moreover, we quantitatively compare the computational efficiency of our method to the centralized approach, revealing up to a 75% reduction in computational time. Overall, our approach offers a promising avenue for accelerating MPC s

Author

Amatucci, Lorenzo; Turrisi, Giulio; Bratta, Angelo; Barasuol, Victor; Semini, Claudio

Published

2024

Language

EN