Patent ID: 9712092
Date: 2017-07-18
CPC Classifications: H02P

Claim:
1. A motor control apparatus comprising: a motor including a rotor with a permanent magnet and a stator with a coil forming an electromagnetic field and progressing or retreating a screw so as to generate pressure in a piston provided in a brake for braking a vehicle; an encoder outputting an encoder pulse and a reference pulse to correspond to rotation of the motor; an electronic control unit controlling the motor based on the encoder pulse and the reference pulse of the encoder, wherein, the electronic control unit determines the location of the rotor based on the encoder pulse and the reference pulse input from the encoder when the motor rotates by forcibly rotating the motor so as to rotate the motor in a first rotation direction or a second rotation direction to control the motor when the motor starts; and a hall sensor sensing the location of the rotor, wherein the electronic control unit determines whether the hall sensor is normal or abnormal and when the hall sensor is normal, controls the motor to correspond to an output signal for each phase of the motor, which is output from the hall sensor.