AUV近水面运动建模与波浪跟随控制研究

AUV near surface motion modeling and wave following control

  • 摘要: 【目的】针对无人水下航行器(autonomous underwater vehicle,AUV)执行通信任务的隐蔽性要求,提出一种带折叠天线的AUV近水面通信模式。其关键是实现AUV本体与波面保持恒定距离。【方法】基于切片理论对规则波的波浪力进行预报,建立了AUV的五自由度近水面运动方程。结合视线法(line of sight,LOS)和PID控制器开展AUV本体的波浪跟随控制的仿真研究。【结果】仿真结果表明,空间循迹运动的法向跟踪稳定精度为0.2476m,波浪跟随运动的垂向跟随稳定精度为0.2326m,具有较好的控制效果。同时由统计分析发现,波高和波频对控制效果有显著影响,波高和波频越大,控制效果越差。【结论】所做研究验证了AUV近水面波浪跟随运动的可行性,能够为高隐蔽实时通信等提供理论模型支撑。

     

    Abstract: Objectives To address the covert communication requirements of autonomous underwater vehicles (AUVs), a near-surface communication mode with a foldable antenna is proposed. The key aspect is to maintain a constant distance between the AUV and the wave surface. Methods Utilizing slice theory to forecast the wave forces of regular waves, a five-degree-of-freedom motion equation for the AUV near the water surface is established. Simulation studies on wave-following control of the AUV are conducted using the Line of Sight (LOS) method and PID controllers. Results Simulation results demonstrate that the normal tracking stability precision of the spatial trajectory is 0.2476 meters, and the vertical tracking stability precision of wave-following motion is 0.2326 meters, indicating satisfactory control performance. Statistical analysis reveals that wave height and frequency significantly impact control effectiveness; larger wave height and frequency result in poorer control outcomes. Conclusions The study validates the feasibility of wave following motion for AUVs near the water surface, providing theoretical support for high-covert real-time communication applications.

     

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