混合驱动水下滑翔机自噪声测量及分析

摘要

[目的]混合驱动水下滑翔机是一种融合了传统自主式无人潜航器(AUV)和水下滑翔机(AUG)驱动方式的新型水下航行器.为研究混合驱动水下滑翔机自噪声的噪声源分布及基本特征,[方法]首先进行自噪声采集系统的设计与研制,并在消声水池中进行噪声分析实验.以2016年8月南海某海域1000 m深度范围内的观测数据为研究对象,通过分步运转法,得到实航下滑翔机平台不同工作状态下的自噪声数据.[结果]试验分析与研究结果表明,设计和研制的自噪声采集系统工作稳定,在滑翔工作模式下水下滑翔机的机械噪声对自噪声的贡献最大,500 Hz以上的高频段时自噪声与浮力调节单元工作密切相关,在1 kHz达到峰值.[结论]所得结论对水下滑翔机减振降噪措施的实施和性能的改进可提供一些指导.%The Hybrid-driven Underwater Glider (HUG) is a new type of submersible vehicle which combines the functions of traditional Autonomous Underwater Vehicles(AUV)and Autonomous Underwater Gliders (AUG). In order to study its noise source distribution and basic self-noise characteristics,a self-noise acquisition system based on the HUG was designed and developed,and a noise analysis test carried out in a free-field pool. In August 2016,the sea trial of the Petrel II glider was conducted in the South China Sea,with observation data at a depth range of 1000 m as the research object. The self-noise data of the glider platform under different working conditions was obtained through the step-by-step operation method. The experimental analysis and results show that the self-noise acquisition system is stable. The contribution of mechanical noise to self-noise is greatest when the glider works in the gliding mode,while the self-noise band above 500 Hz is closely related to the work of the buoyancy adjustment unit,and peaks at 1 kHz. According to the analysis of the basic characteristics of self-noise,this provides some guidance for the implementation of vibration and noise reduction.