Analytical analysis of magnetic field of eddy-current driver based on equivalent current method

According to the structure parameters of the eddy-current driver, this paper established the magnetic field analytical model of eddy-current driver by utilizing the method of equivalent surface current. We calculated and analyzed the magnetic field of the eddy-current driver with the help of the MATLAB simulation software. The purpose was to explore the regularity of analytical model of magnetic field. Then the result was compared with that of finite element method and measured values. The compared result showed that the space distribution of the axial magnetic field on the surface of copper conductor plate of eddy current drive was periodically distributed along the circumferential Angle. The error of analytic method is less than that of the numerical solution method.