Patent ID: 8821386

Claim:
A micro robot system movable on three dimensional space, the micro robot system comprising: a micro robot unit including a magnet module having a certain magnetization direction and rotating and proceeding along a wall by a processional rotating magnetic field; and an electromagnetic field generation unit setting an alignment direction of the micro robot unit to have a certain angle with respect to the magnetization direction and generating a magnetic field in the alignment direction to drive the micro robot unit, wherein the electromagnetic field generation unit includes a pair of Helmholtz coil units disposed to face opposite to each other and penetrating a certain axis on the three dimensional space, a pair of Maxwell coil units disposed to face opposite to each other and penetrating the certain axis, two pairs of fixed uniform saddle coil units located on a plane perpendicular to the certain axis and fixedly installed to be orthogonal to each other, and a pair of rotational gradient saddle coil units installed on a rotating member and rotating on the certain axis.