低成本水下机器人用声学通信实现边界控制,无需外部传感器
Boundary Control Behaviors of Multiple Low-cost AUVs Using Acoustic Communication
- 用声波信号测距和测速,估算中心信标位置并控制多机行为
- 在模拟、泳池和海洋实测中均成功完成围栏与环形巡逻任务
- 适用于无人自主水下系统,特别适合资源受限的群控场景
本研究提出基于声学通信的多自主水下航行器(AUV)边界与路径控制方法。采用单一中心声学信标,设计两种模型:基于距离变化(RVB)的模型仅依赖声学调制解调器测得的距离数据;基于航向估计(HEB)的模型结合距离与距离变化率,估算信标位置并执行指定行为。验证了两种边界控制行为:围栏(Fencing)确保AUV不越界,环形巡逻(Milling)使AUV沿预设路径绕信标循环运动。所有测试在仿真、泳池(含人工水流)及海洋实地环境中完成,所有AUV均为全自主运行,未使用外部输入或传感器。研究提供了定量与定性分析,聚焦多机器人系统的效能与应用价值。
原文摘要 · Abstract (English)
This study presents acoustic-based methods for the control of multiple autonomous underwater vehicles (AUV). This study proposes two different models for implementing boundary and path control on low-cost AUVs using acoustic communication and a single central acoustic beacon. Two methods are presented: the Range Variation-Based (RVB) model completely relies on range data obtained by acoustic modems, whereas the Heading Estimation-Based (HEB) model uses ranges and range rates to estimate the position of the central boundary beacon and perform assigned behaviors. The models are tested on two boundary control behaviors: Fencing and Milling. Fencing behavior ensures AUVs return within predefined boundaries, while Milling enables the AUVs to move cyclically on a predefined path around the beacon. Models are validated by successfully performing the boundary control behaviors in simulations, pool tests, including artificial underwater currents, and field tests conducted in the ocean. All tests were performed with fully autonomous platforms, and no external input or sensor was provided to the AUVs during validation. Quantitative and qualitative analyses are presented in the study, focusing on the effect and application of a multi-robot system.
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