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首页> 外文期刊>International journal of nonlinear sciences and numerical simulation >Dynamics Model and Control of High-Speed Supercavitating Vehicles Incorporated with Time-Delay
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Dynamics Model and Control of High-Speed Supercavitating Vehicles Incorporated with Time-Delay

机译：具有时滞的高速超空车动力学模型与控制

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摘要

High-Speed Supercavitating Vehicles (HSSVs) are characterized by substantially reduced hydrodynamic drag from the fully wetted underwater vehicles. Drag is localized at the nose, where a cavitator generates a cavity that completely envelops the body. In this paper, a vertical plane model incorporated with time- delay effect (memory effect of cavity- vehicle interaction) is developed. Unlike previous models, the authors focus on the immersion angle between supercavity and vehicle used to determine the planing force. Stability analyses are carried out with the delay-dependent pitch-plane model. And a key problem is shown that this time- delay leads to destabilization of limit- cycle motion. A new PID control-algorithm with up-and-down rudder mode is designed, demonstrated by both numerical and experimental studies. The research may be useful for developing the trajectory control system of HSSVs.
机译：高速超空泡飞行器（HSSV）的特点是充分润湿的水下航行器的水动力阻力大大降低。阻力位于鼻子处，空化器会在该处生成一个完全包裹身体的空腔。在本文中，开发了一种包含时滞效应（腔-车相互作用的记忆效应）的垂直平面模型。与以前的模型不同，作者专注于用于确定刨削力的超空洞和车辆之间的浸入角。使用与延迟有关的俯仰平面模型进行稳定性分析。关键问题表明，这种时间延迟会导致极限循环运动的不稳定。设计了一种新的带有上下方向舵模式的PID控制算法，并通过数值和实验研究证明了这一点。该研究对于开发HSSV的轨迹控制系统可能是有用的。

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