Electromagnetic railgun armature magnetic field measurement and analysis based on B-Dot probe signal

Through the armature magnetic field measurement of different position, conduing to analyze and understand changes of armature magnetic field in electromagnetic railgun launch process. Emission in a railgun test process, installed in the use of B-Dot probes electromagnetic rail gun barrel side of different position, current through the armature to produce magnetic measurements were carried out. Analysis and calculation of the inductive voltage waveform obtaining by B-Dot probe using MATLAB, reducing the magnetic induction intensity results measured. At the same time on the electromagnetic emission process magnetic field simulation by using the electromagnetic simulation software, obtaining the 3D simulation results of B-Dot probe position. Through analyzing and calculating the magnetic field at the B probe, the measured magnetic field is obtained with the B-Dot probe were compared, error from B-Dot probe measurements of armature magnetic field. Carried on the comparative analysis of the magnetic field waveform and current waveform of different position B-Dot probes to obtain, verify the relationship between the magnetic field with the current changes.