3 AXIS FREEDOM TYPE SPHERE MOTOR

摘要

A three-axis degree-of-freedom (DOF) spherical motor of the present invention comprises: a rotor (10) having at least one permanent magnet of which the polarity is exposed to the surface forming a sphere; and a stator (50) rotating the rotor (10) in each direction of three axes with current flows flowing in a transverse coil and a longitudinal coil adjacent to the transverse coil, whereby three rotary drive axes with three decoupled driving torque by Lorentz force using the principle of a voice coil motor (VCM) can be formed, and specifically, a precision position control can be achieved using the characteristics of a linear magnetic field that is linearly proportional to current.