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Robot control connects a desired motion or force to actuator commands using measurements and a model. Compare the task, feedback, test conditions and reported limitations when reading results.

MIT · Underactuated Robotics

Research

Extending Harmonic Function Methods via Root Locus for Coordinated Path Generation

This preprint studies coordinated paths for interchangeable robots and goals in planar spaces with polygonal obstacles. The proposed construction uses conformal mapping and a generalized root locus to derive robot-goal assignments and paths. The authors describe safety tests and simulated examples. DailyMecha has summarized the abstract, without independently validating the mathematical claims.

arXiv

Research

Decentralized Bi-Level Optimization for Cooperative Orbital Transportation of a Rigid Payload

The paper presents a decentralized bi-level optimization framework for swarms of small spacecraft transporting a rigid payload. It separates convex thrust allocation from an outer search over payload torque trajectories, using exact gradients to find fuel-efficient solutions without requiring full nonlinear-program convergence. The authors report theoretical convergence guarantees and validate the method in extensive Monte Carlo simulations, including closed-loop recovery from in-flight faults; short-timescale performance scales with the number of agents.

arXiv cs.RO

Research

Whole-Body Motion Guided Reference Generation for Uncertainty-Aware Compliant Assistance

The paper proposes a dual-loop control strategy for exoskeleton assistance. A denoising generator uses whole-body human motion and exoskeleton proprioception, with task descriptions as auxiliary cues, to generate future trajectories. The controller uses the sampled trajectories’ mean as its reference and variance to regulate stiffness through variable admittance control. Experiments report reduced muscle activation versus standard baselines and lower metabolic energy expenditure than the unassisted condition.

arXiv cs.RO