| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for optimizing synchronous motor control which can excellently follow the variation of the inductance of a vector-controlled synchronous motor, to suppress torque variation and torque ripple, and to provide a synchronous motor control device which can be optimized to suppress the torque variation and torque ripple. <P>SOLUTION: The inductance of a d-axis and a q-axis in a torque equation and a voltage equation used for the vector control is set as a function of the current and the electric angle of the d-axis and as a function of the current and the electric angle of the q-axis, respectively. The inductance of each axis exhibiting nonlinear characteristics is linearized as follows. Harmonic components, which are superposed on the nonlinear inductance of each axis varying in three dimensions corresponding to the current and the electric angle of each axis, are extracted, and the currents of each axis, which act as a weighting coefficient of the harmonic components, are used to set a weight function. The currents of each axis, which act as the weighting coefficient of the amplitude offset components of the inductance of each axis, are used to set an amplitude offset function. <P>COPYRIGHT: (C)2009,JPO&INPIT |
