| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric motor drive system capable of attaining, in driving two or more electric motors mechanically connected with each other at variable speed, control for easily keeping the respective rotational speed variations constant according to the load applied to the two or more electric motors. <P>SOLUTION: The electric motor drive system includes: a speed variation calculating section A16a and a speed variation calculating section B16b for operating the respective speed variation estimating values for the electric motors 2a, 2b according to the currents detected by current detecting sections 4a, 4b and the corresponding current command values of the electric motors; and a speed uniformization voltage correction calculating section 17 for outputting the values to correct the magnitudes of the voltages applied to the electric motor 2a, 2b so that the respective speed fluctuation estimated values operated by the speed variation calculating section A16a and the speed variation calculating section B16b become the same predetermined value. <P>COPYRIGHT: (C)2009,JPO&INPIT |
