| Summary: | 碩士 === 國立成功大學 === 系統及船舶機電工程學系碩博士班 === 97 === The purpose of this thesis is to design a small Autonomous Underwater Vehicle platform composed of modular section. The advantages of the AUV are easy to carry, easy to repair or upgrade. The overall plan is divided into seven sections, bow section, bow and stern side thruster, bow and stern buoyancy engine, main control section, and stern section.
The bow section is a fairing hemispherical dome. The control system located in the main section control all the functions of the AUV. There are two sets of the buoyancy engine, one is at the bow, and the other is at the stern. They control the AUV's pitch and heave movement. The bow and stern side thruster control AUV’s yaw and sway movement, and the thruster in the stern section is responsible for the surge.
In terms of design, in order to avoid affecting wireless network with the normal operation of communications equipment, the use of acrylic cylinder as the carrier shell. And design two of spin-in module for the connection and watertight with the other section.
In order to adjust the AUV's payload, this article contains an analysis of each module of the device configuration. Use the flotation material to maintain the AUV a floating body in a neutral state.
The AUV has a removable glider foil to provide lift upward, so that AUV in the navigation process can slow down the speed of sinking and sliding forward.
CFD simulation of AUV in the fluid dynamics and application of computational fluid dynamics software package FLUENT simulation of three-dimensional analysis to figure out the AUV in a variety of angle of attack, the relationship between resistance, lift and speed, and verified with the experimental data, set out to achieve with the best control parameters.
The results of this comparison showed that the credibility of the numerical simulation. It can be used as a reference for future design direction of performance and appearance forecast.
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