Motor control device
AssigneeMitsubishi Electric Corporation
InventorsKazumasa Ito, Tetsuya Tanabe
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Abstract
A motor control device stores correction wave information in a storing unit in advance, monitors a state amount (a torque command or motor speed) specifying a driving state for causing a pulsation in generated torque of a motor, selects, from a storing unit, correction wave information corresponding to positive or negative of the state amount, and generates a sine wave-like correction wave with respect to a periodical torque pulsation (a torque ripple or cogging torque) based on the selected correction wave information, and controls the motor based on a corrected torque command obtained by combining the torque command and the generated correction wave, instead of the torque command input from a host apparatus to control the motor.
Claims17
A motor control device for controlling a motor based on an input torque command, comprising:
- a positive-negative determining unit for determining positive or negative by indicating whether a state amount specifying a driving state for causing a pulsation in generated torque of the motor is positive polarity or negative polarity;
- a correction-wave-information selecting unit for selecting, from a storing unit that stores correction wave information, correction wave information corresponding to positive or negative indicated by a determination result of the positive-negative determining unit;
- and
- a correction-wave generating unit for generating a sine wave-like correction wave with respect to a periodical torque pulsation, based on the selected correction wave information,
- wherein the motor control device controls the motor based on a corrected torque command obtained by combining the torque command and the generated correction wave, instead of the input torque command.
Dependencies are inferred from the claim text.