Optimization of Vertical Flat AUV Structure Based on Response Surface Methodology
To enhance the navigation efficiency of underwater robots,a vertical flat Autonomous Underwater Vehicle(AUV)is designed and optimized in this paper.A three-dimensional model of the underwater robot is conceptualized,and the envelope volume along with lift-to-drag ratio are computed through parameterized modeling.The optimal Latin hypercube method is employed for sampling,resulting in the establishment of a second-order response surface model meeting engineering precision standards.The envelope volume and lift-to-drag ratio are then designated as optimization objectives,subsequently utilizing the NSGA-Ⅱ algorithm to determine the optimal external structure of the underwater robot.After undergoing the optimization process,the physical appearance of the underwater robot exhibits a fuller shape.Comparative analysis with the original design demonstrates a 12.21％increase in lift-to-drag ratio and a 5.26％increase in the envelope volume for the optimized underwater robot.Based on the stability judgment criterion composed of hydrodynamic derivatives,the motion stability of AUV on the horizontal plane at a given speed is analyzed and verified.By processing the model and conducting resistance testing experiments in a circulating water tank,the reliability of the response surface model is demonstrated.This research method can be used to optimize the external structure of underwater robots and improve their hydrodynamic performance.
Vertical flat AUVParameter optimizationLift-to-drag ratioStructural optimizationResponse surface model
万方数据
维普
