The design and application of a novel vectored thruster for special-shaped AUV
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AUVs, as the primary platform, have significantly contributed to underwater surveys in scientific, and military fields. Enhancing the manoeuvrability of autonomous underwater vehicles is crucial for their development. A novel vectorial thruster is present in this paper. The thrust-vectoring mechanism of the novel vectorial thruster has two rotational degrees of freedom achieved by a linear actuator and a steering engine. The effectiveness of the AUVs is notably enhanced at low forward speeds with the specially designed thrust-vectoring mechanism. A theoretical analysis has been conducted to investigate and verify the kinematics of the thrust-vectoring mechanism. the spatial attitude control test and propulsive force test of the vectorial thruster are made to evaluate its performance. Finally, open-hoop control was applied to the control of a real SAUV, and experiments were conducted in a water tank The experimental results demonstrate that the performance of this type of vectorial thruster is acceptable, and the design is worthy of further research.
自主水下航行器(Autonomous Underwater Vehicles,AUVs)作为核心作业平台,已在科学与军事领域的水下勘测工作中发挥了重要作用。提升AUV的机动性能,对其技术发展而言至关重要。本文提出了一种新型矢量推进器(vectorial thruster)。该新型矢量推进器的推力矢量机构(thrust-vectoring mechanism)具备两个旋转自由度,通过线性执行器(linear actuator)与转向舵机(steering engine)协同实现。采用该专属设计的推力矢量机构后,AUV在低前进航速下的机动效能得到显著提升。本文针对该推力矢量机构的运动学特性开展了理论分析,以探究并验证其运动规律。随后开展了该矢量推进器的空间姿态控制试验与推进力测试,以评估其综合性能。最后,将开环控制(open-hoop control)应用于实体半自主水下航行器(Semi-Autonomous Underwater Vehicle,SAUV)的控制,并在水槽中开展了相关试验。试验结果表明,该型矢量推进器的性能表现符合预期,其设计方案具备进一步研究的价值。




