LIU Lu, XIAO Ling. Measurement and analysis of self-noise in hybrid-driven underwater gliders[J]. Chinese Journal of Ship Research, 2017, 12(4): 132-139. DOI: 10.3969/j.issn.1673-3185.2017.04.021
Citation: LIU Lu, XIAO Ling. Measurement and analysis of self-noise in hybrid-driven underwater gliders[J]. Chinese Journal of Ship Research, 2017, 12(4): 132-139. DOI: 10.3969/j.issn.1673-3185.2017.04.021

Measurement and analysis of self-noise in hybrid-driven underwater gliders

  • 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 1 000 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.
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