| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor control device that accurately performs maximum torque control while suppressing destabilization of a control system.SOLUTION: In an embodiment, the motor control device includes: a rotational position estimation section for estimating a rotational position of a rotor from motor parameters including a q-axis inductance of a motor on the basis of an output current to the motor and a voltage command; a fluctuation component estimation section for estimating a change per current phase change in output torque of the motor corresponding to a high frequency signal whose frequency is higher than a driving frequency of the motor; and an inductance estimation section for estimating an inductance value productive of maximum torque on the basis of the change per current phase change in output torque, and setting it as the q-axis inductance in the rotational position estimation section. |
