基于几何相似性的载人潜水器无动力潜浮运动预报

Prediction of unpowered descend and ascend motion of human occupied vehicle based on geometric similarity

无动力下潜和上浮可以大大节省潜水器的能源,提高潜水器在水下的作业时间,是潜水器水下作业能力的重要基础之一。本文以载人潜水器受力分析为基础,基于几何相似性理论,获取载人潜水器潜浮速度与潜水器水中重力之间的关系,建立载人潜水器无动力潜浮运动预报模型。以“蛟龙”号载人潜水器为例,采用所建立的潜浮运动预报模型对7000 m无动力潜浮运动进行预报,通过对比分析可知,本文所建立预报模型的预报精度优于基于标准运动模型的预报精度,验证了本文所建立模型的可行性和有效性,为在实际应用中对无动力潜浮运动的准确预报提供了可靠的技术手段。

Unpowered descend and ascend can greatly save the energy of Human Occupied Vehicle(HOV),improve the underwater operation time of HOV,is one of the important bases of underwater operation ability of HOV.Based on the force relationship of HOV and geometric similarity theory,this paper obtains the relationship between speed and underwater gravity of HOV,and establishes the prediction model of unpowered descend and ascend motion.Taking“Jiaolong”HOV as an example,the prediction model established was used to forecast 7000 m unpowered descend and ascend motion.Through comparative analysis,it can be seen that the prediction accuracy of the prediction model established in this paper is higher than the based on the standard motion model,which verifies the feasibility and effectiveness of the model established in this paper.It provides a reliable technical means to predict unpowered descend and ascend motion.