首页> 外文会议>ASME International Conference on Ocean, Offshore and Arctic Engineering >HYDRODYNAMIC DESIGN OF A MORPHIC AUTONOMOUS UNDERWATER VEHICLE USING NEURAL NETWORKS
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HYDRODYNAMIC DESIGN OF A MORPHIC AUTONOMOUS UNDERWATER VEHICLE USING NEURAL NETWORKS

机译:基于神经网络的形态学水下机器人的水动力设计

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With the advent of Artificial Intelligence and new manufacturing techniques, Autonomous Underwater Vehicles (AUVs) have started to prevail over their manned version in terms of cost efficiency when it comes to accomplish tasks in ocean exploration, offshore platform and ship maintenance or other military missions. As progress has been made over the past years, autonomy remains a topical issue for the untethered AUVs. Drawing its inspiration from nature, this paper aims at minimizing the energy consumed by the device on a specific mission by allowing its shape, parameterized with Bezier curves, to morph throughout time. The framework is restricted to one dimensional trajectories only. A first step consisting of finding the optimal velocity and shapes added mass coefficient in surge as functions of time for a given mission is presented. Then a way of determining the succession of shapes the AUV must take so that it has the right added mass coefficient at any time is proved and used. This last part is made computationally affordable by using a Neural Network instead of a Boundary Element Method to evaluate the hy-drodynamic coefficient in surge of the shape. Outliers detection and elimination are being performed on the training dataset to increase the predictive model reliability and robustness.
机译:随着人工智能和新制造技术的出现,在完成海洋勘探,海上平台和船舶维护或其他军事任务方面,自动水下机器人(AUV)在成本效率方面已经开始超越其载人版本。随着过去几年取得的进步,自主性仍然是不受束缚的AUV的热门话题。从自然界中汲取灵感,本文旨在通过使设备的形状(随Bezier曲线参数化)随时间变化,从而最大程度地减少设备在特定任务上消耗的能量。该框架仅限于一维轨迹。提出了第一步,即找到给定任务的最佳速度和形状随时间变化的质量附加系数。然后证明并使用一种确定AUV必须采取的形状顺序的方法,以便它在任何时候都具有正确的附加质量系数。通过使用神经网络而不是边界元法来评估形状波动中的水动力系数,可以使计算的最后一部分负担得起。正在对训练数据集执行离群值检测和消除,以提高预测模型的可靠性和鲁棒性。

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