| 摘要 |
PROBLEM TO BE SOLVED: To provide a servo motor control system capable of suppressing heat generation caused by a reactive current by reducing the reactive current in a region where voltage saturation does not occur, and enlarging maximum torque that can be obtained in a desired rotational state zone, capable of widening a control region of a rotational state and capable of performing stable rotation up to a high-speed range, and a servo motor control method.SOLUTION: A d-axis current Id commanded by a d-axis current command CId is controlled to be zero during a first term (acceleration area) T1 from a rotation number N of zero to a first rotation number [A] and to flow while being gradually increased during a second term (high-speed area) T2 from exceeding the first rotation number [A] to a second rotation number [B]. An increase mode of the d-axis current Id is increased to gradually approach a primary function straight line DL from a rotation number lower than the first rotation number [A], e.g., the rotation number of zero to the second rotation number [B] during the second term T2 from the first rotation number [A] to the second rotation number [B]. |
