| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor control device of a harmonic component-controlled type having simple circuit processing and high precision. <P>SOLUTION: A motor current is projected onto a dq-axis coordinate system rotating at a frequency of fundamental frequency components and harmonic components to obtain a projected signal (coordinate conversion signal) from circuits 18, 19. Cancel signals corresponding to the AC components of each dq-axis coordinate system are canceled from each projected signal by being subtracted with subtractors 8, 9 to extract each DC signal component. This separates the fundamental frequency components of a motor current from the harmonic components without a use of a filter. Each DC signal component is feedback-controlled so as to be converged into each command value, controlling the fundamental frequency components and the harmonic components to target values mutually independently. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
