The Design & Dynamic Analysis Of Remote Operated Vehicle For Submarine Cable

In recent years,submarine cables have often been damaged because of the frequent fishing activities and other factors.It’s very difficult to repair the submarine cable because the cable is in the deep sea,it’s hard to locate the point of failure.The main purpose of this article is to design an underwater robot that can be used to detect submarine cables.First of all,this paper presents a design scheme of a remotely operated vehicle(ROV)based on the analysis of a large number of underwater robots which are used to detect submarine cable.The ROV sits on the submarine cable while detecting the cable.Just like a train travelling on rails.Here is a pulley in the front of the ROV which is used to fit with the outline of the submarine cable,and the pulley with electromagnet inside.This pulley makes the underwater robot better controlled when it works.At the same time,it improves the work efficiency.Then,this paper designed the detailed scheme of underwater robot.And used ANSYS Workbench to analyze the statics of the key components,to make sure the design is effective.Secondly,this paper analyzed the forces of ROV and these forces are mathematically expressed.This above is to establish the mathematical model of ROV and provide the theoretical support for the follow-up simulation.Thirdly,by using the CFD software Fluent,this paper analyzed the forces and moments of ROV with different flow rates,drift angles and attack angles.And this paper used the data of resistance to further refine the main indicators of underwater propulsion,such as the maximum thrust of the propeller,to make sure these propellers can overcome the water resistance.This data can also be used as a reference when predicting kinematic performance and handing performance.Finally,we tested the prototype of ROV,carried out the system debugging and thrust test experiment,to verify the ROV system’s functionality and reliability.