Electromagnetic coil structure with controllable induced electric field and construction method thereof

The invention discloses an electromagnetic coil structure with a controllable induced electric field and a construction method of the electromagnetic coil structure, and belongs to the technical field of noninvasive nerve regulation and control. The electromagnetic coil structure with the controllable induced electric field comprises at least three coils, each coil is defined by three sections of wires, then three end points are formed, the three end points are a, b and c respectively, the at least three coils are arranged in the same three-dimensional coordinate system, in each coil, the included angle between the ac section and the Z-axis negative direction is an acute angle, and the included angle between the ac section and the Z-axis negative direction is an acute angle. And the at least three coils are spatially and symmetrically distributed around the target spot. According to the invention, the three-dimensional direction of the induced electric field in the small target area can be randomly controlled