• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2025, Vol. 61 ›› Issue (24): 363-376.doi: 10.3901/JME.2025.24.363

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Research on Cooperative Transportation of Underwater Payload Based on Cooperative Formation Control of Multiple Unmanned Underwater Vehicles

PANG Wen1,2, ZHU Daqi1,2, LIN Shuhan3, CHEN Mingzhi1,2   

  1. 1. School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093;
    2. Institute of Underwater Robotics and Intelligent Systems, University of Shanghai for Science and Technology, Shanghai 200093;
    3. Business School, University of Shanghai for Science and Technology, Shanghai 200093
  • Received:2025-01-10 Revised:2025-08-11 Published:2026-01-26

Abstract: Aiming at the application scenario of underwater object transportation in a multi-obstacle environment, the formation reconfiguration and trajectory planning issues during the cooperative transportation and point-to-point delivery of underwater object by multiple unmanned underwater vehicles(UUVs) are explored. A formation control and motion planner for the multi-UUV cooperative transportation system is designed. Firstly, to meet the formation control requirements of multi-UUV cooperative transportation, a formation controller for the multi-UUV system is designed based on rigid graph theory, affine transformation, and backstepping control theory. The core function of this controller is to control the multi-UUV system to form a specific formation configuration, thereby steadily lifting and transporting underwater object. During transportation, the system can reconfigure the shape of the formation using affine transformation according to different obstacle environment information or specific task requirements. The stability of the closed-loop formation control system is analyzed using Lyapunov function, which verifies the reliability of the control scheme. Secondly, to address the trajectory planning challenges of multi-UUV cooperative transportation in complex multi-obstacle environments, a collision-free trajectory planning algorithm suitable for multi-UUV formations is designed based on the fluid disturbance strategy, ensuring that the formation can safely avoid obstacles in complex environments. Finally, the effectiveness of the proposed algorithm is verified using Matlab simulations. The simulation results show that the UUVs in the formation can quickly form and stably maintain the desired transportation formation, and can flexibly maneuver along the planned trajectory to avoid obstacles. Ultimately, the goal of collaborative transportation of large underwater object by multiple UUVs is achieved.

Key words: multi-unmanned underwater vehicle, formation control, underwater cooperative transportation, motion planning

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