Title: Apparatus and method for controlling brushless DC motor
Application Number: 200610140040 Application Date: 2006.10.11
Publication Number: 1949650 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02P6/00;H02P6/20;H02P6/24
Applicant(s) Name: Samsung Electro Mech Address:
Inventor(s) Name: Son Yeon-ho
Attorney & Agent: liwei
Abstract:
    Disclosed is a control apparatus for a brushless DC motor, which has a rotor with n poles (where n is a natural number) that rotates due to a supply current with m phases (where m is a natural number) applied to a stator, controlling the number of output rotations of a gearbox, which is connected to the brushless DC motor and has a predetermined gear reduction ratio-wherein the gear reduction ratio represents a ratio of the number of rotations of the brushless DC motor to the number of output rotations of the gearbox-, the control apparatus comprising: a rotation detector part, which counts the number of rotation pulses generated by the rotation of the rotor from the brushless DC motor; a required rotational amount input part, which receives the number of output rotations as input and converts it to a corresponding required number of rotation pulses; a comparison part, which compares the number of output rotations and the required number of rotation pulses; and a current controller part, which controls a supply current applied to the brushless DC motor according to a comparison result of the comparison part.
Time: 10