Submarine Multi-dimensional Magnetic Field Compensation System Based on Improved Whale Optimization Algorithm

In order to avoid the spatial magnetic field distortion caused by the submarine induced magnetic field, the real-time degaussing current is input in the longitudinal, transverse and vertical directions inside the submarine, and the nine components of Ziz, Yiz, Xiz, etc. on the x, y and z three-direction windings are magnetically applied Compensation to improve the magnetic protection capability of the submarine. Aiming at the high coupling problem when the unidirectional winding is used to compensate the unidirectional component of the magnetic field, this paper proposes a new whale optimization algorithm based on adaptive weighting and simulated annealing strategy. The algorithm uses a time-varying function to control the inertia weight coefficient, and adjusts the adaptive weight to improve the convergence speed of the algorithm; The simulated annealing strategy is introduced to accept poor solutions with a certain probability, and the algorithm's global optimization capability is enhanced. Flux 3D is used to perform high-precision finite element simulation on the three-dimensional space model of the submarine, and the magnetic field distribution and change law of the three-component submarine space are studied, and the three-component magnetic field compensation curve of the submarine's longitudinal, transverse and vertical windings is obtained. Building a real-scale simulation platform to verify the accuracy of the multi-dimensional magnetic field compensation results. The results show that the improved whale optimization algorithm has a magnetic field compensation effect of more than 90% on the Ziz, Yiz, and Xiz components of the vertical winding, and it has a strong global search ability and fast convergence speed, which proves the effectiveness of the algorithm in the submarine magnetic field compensation.