| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving control device for motor capable of appropriate advance angle control of a motor with a simple circuit configuration.SOLUTION: A driving control device for a motor 20 comprises: a motor driving part that drives the motor on the basis of a drive control signal Sd; a control circuit part 4 that controls the rotation of the motor 20 so that a prescribed target rotational speed is reached by outputting the drive control signal Sd; a current detection circuit 6 that detects a driving current passed through the motor 20 as a voltage value; and an advance angle controller 7 that outputs an optimum advance angle signal So. When an advance angle is optimized, the control circuit part 4 outputs the drive control signal Sd so that the advance angle varies in a plurality of ways with respect to the prescribed target rotational speed. The advance angle controller 7 produces PWM (pulse-width modulation) signal Sp according to the peak value of a detection voltage detected by the current detection circuit 6 and outputs the optimum advance angle signal So according to the PWM signal Sp with regard to a plurality of kinds of advance angles. The control circuit part 4 outputs the drive control signal Sd according to the optimum advance angle signal So. |
