Apparatus for controlling an operation of motor and control method thereof
AssigneeLG Electronics Inc.
InventorsSoon Bae Yang, Kwan Yeul Cho, Chan Hee Hong
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Abstract
Disclosed is an apparatus controlling an operation of a motor and control method thereof enabling to prevent a driving force of the motor from being reduced and actuate the motor for hours stably when a washing machine is operated for hours. The present invention includes the steps of detecting a phase voltage value and a phase current value applied to the motor between forward and backward revolution sections of the motor, calculating a phase resistance value based on the detected phase voltage and current values, and controlling the operation of the motor by controlling a voltage applied to the motor in accordance with the calculated phase resistance value.
Claims7
An apparatus for controlling an operation of a motor, comprising:
- a revolution section detect unit configured to calculate an operational frequency of the motor based on phase voltage and current values applied to the motor and configured to output a section detect signal by detecting an operational section of the motor in accordance with the calculated operational frequency,
- a calculation unit configured to receive the phase voltage and current values in accordance with the section detect signal and configured to calculate a phase resistance value;
- a speed/position calculation unit configured to calculate a rotor position of the motor by detecting the calculated phase resistance value and the phase voltage and current values and also configured to calculate a speed of the motor;
- and
- a voltage command generator configured to generate a voltage command and apply a voltage to the motor based on the rotor position and the speed of the motor.
Dependencies are inferred from the claim text.