Controller for motor

A controller for motor comprising at least one processor configured to implement:

• a basic voltage command calculator that calculates a voltage command basic value;
• a current detector that detects a current flowing through a winding of a motor;
• a magnetic flux estimator that estimates an interlinkage flux interlinked to the winding, based on an applied voltage applied to the winding and a detection value of the current;
• a torque estimator that estimates an output torque of the motor, based on the detection value of the current and an estimation value of the interlinkage flux;
• a pulsation extractor that extracts a pulsation component from an estimation value of the output torque;
• a pulsation controller that calculates a voltage command correction value, based on an extraction value of the pulsation component;
• a superimposer that calculates a voltage command after superimposing by superimposing the voltage command correction value on the voltage command basic value;
• and
• a voltage applicator that applies voltage to the winding, based on the voltage command after the superimposing.