Effects Analysis Based on Computer Simulation of Autonomous Underwater Vehicle Throw Limiting Period on the Initial Trajectory

We have set up an AUV (autonomous underwater vehicle) space trajectory mathematical model. Then, the fourth-order Runge-Kutta method and full pivoting Gaussian elimination method are used for the computer simulation of different control distance for the different balancing weighting properties. The initial ballistic changes in the law are researched. The simulation results are as follows. In conditions of relatively small quality of the AUV and large distance between quality heart and floating heart, the AUV initial trajectory is vulnerable to the phenomenon of the arch of water if the up-control distance is short, and the range of the arch of water will become larger if the down-control distance becomes longer. In the other conditions, the initial trajectory has a larger bag depth if the up-control distance is short. If the down-control distance becomes longer, the phenomenon of the arch of water will be more obvious and the range of fluctuation within the transition process becomes larger. According to comprehensive analysis, the setting range of the up-control and down-control distance for two different AUV characteristics is presented.