PRINTED CIRCUIT BOARD MOTOR AND CONTROL SCHEME

摘要

A printed circuit board motor is disclosed. The motor (10) comprises a rotor plate (31) embedded with magnets (40), an axle (50), and a printed circuit board stator (20). The printed circuit board (20) comprises two conductors printed on the same surface or on opposite surfaces of the printed circuit board The two conductors produce alternating "square wave" patterns. The printed circuit board circuitry causes the direction of the current flow to reverse at intervals. The rotor rotates in response to the current flow in the stator. The rotation rate can be accurately controlled. The torque and average current consumption can be controlled by "chopping" the current with high frequency modulation whose duty cycle is proportional to the torque and average current consumption which will prolong the battery life of the motor.