| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving control apparatus capable of quickly suppressing overshoot/undershoot of an average current flowing into an inductive load even when diffusively switching frequencies of a PWM pulse.SOLUTION: A PWM control section, when an inputted frequency command value is changed from a first command value F1 to a second command value F2, controls at least one or more middle PWM pulse P2 between a forward PWM pulse P1 corresponding to the first command value F1 and an after PWM pulse P3 corresponding to the second command value F2 so that a fifth period T5 of the P2 corresponding to a first period T1 of the P1 to a length between the first period T1 of the P1 and the third period T3 of the P3 (however, including the first period T1 and not including the third period T3). Further, the PWM control section sets the sixth period T6 of the P2 corresponding to the second period T2 of the P1 to a length between the fourth period T4 of the P3 and the second period T2 of the P1 (however, including the fourth period T4 and not including the second period T2).SELECTED DRAWING: Figure 4 |
