The Research Of Magnetic Field Simulation System Based On MATLAB And COMSOL

Accurate measurements of the magnetic field around the underwater-vehiclemust eliminate the effects of magnetic interference, The induced magnetic fieldproduced by magnetic field, is a major component of the magnetic interference, Itchanges with the cavity gesture and the location in the geomagnetic field.The studyOf induced magnetic around the underwater-vehicle provide the basis for theelimination of magnetic interference,Thus promoting the development of geomagneticnavigation technology.Currently，due to physical experiments inconvenience to the project team,weshould build a simulation system,using computer simulation to obtain the necessarydata,to facilitate subsequent data processing.Due to the complex shape of thecavity,When using the analytical method,Requires solving domain has a relativelysimple geometry and boundary conditions,the project team selected numerical methodto solve the magnetic field values,Adoption the way of joining COMSOL andMATLAB to construct the simulation system.underwater-vehicle relatively runningslow,on preliminary research stage,Induced magnetic field around the cavity view as astatic magnetic field treatment.First of all,this paper introduce two ways of the numerical Solution of theinduced magnetic field,Based on the finite element method is superior to the integralequation method,the simulation system uses finite element software COMSOL.accor--ding to the needs of the simulation system,choose a way to build simulation system,according the actual situation choose the no current field module to simulation,Writea simulation of MATLAB GUI interface,by call each other between COMSOL andMATLAB,to achieve a data transfer of MATLAB and COMSOL,Construction eachsimulation module of simulation system.have the nature of dedicated, real-time,imp--rove the efficiency of the simulation.Then the experiment permits the simulation system correctness of the results.Finally, the error simulation system were assessed.