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arXiv · 2606.20127

Contraction-based Neural Control for Cooperative Aerial Payload Transportation with Variable-length Cables

Yi Lok Lo·Longhao Qian·Hugh H. T. Liu
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Abstract

This paper presents a novel neural nonlinear control framework for a multi-drone slung payload system with variable-length cables and a rigid-body payload. The equations of motion are formulated into a decoupled structure, where the payload and cable length dynamics are governed by independent control channels, facilitating modularized controller design on reduced-order subsystems. A neural control contraction metric (CCM) controller and a neural feedback controller are jointly trained to enforce contraction conditions for the payload subsystem. Separately, a cable length control law is derived that exploits the variable-length degree of freedom for obstacle avoidance. Numerical simulations demonstrate trajectory tracking of a rigid-body payload and gate traversal capabilities of the overall system under the proposed control framework.

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Yi Lok Lo, Longhao Qian, Hugh H. T. Liu. 2026-06-18. Contraction-based Neural Control for Cooperative Aerial Payload Transportation with Variable-length Cables. https://arxiv.org/abs/2606.20127

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