| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor drive control device that can drive a motor on the basis of a PWM signal and can be used in a wide range of applications.SOLUTION: A motor drive control device 1 performs drive control on a motor 20 on the basis of a rotational speed command signal Sc that is a PWM signal. A control circuit section 4 decides whether or not to operate in a control mode of drive control based on a rotational frequency signal Sr. In a non-control mode, a drive control signal Sd is generated in driving the motor 20 on the basis of first speed command information S1 corresponding to the rotational speed command signal Sc. In the control mode, on the other hand, the drive control signal Sd is generated in driving the motor 20 on the basis of second speed command information S2 corresponding to a clock signal S3 generated on the basis of the rotational speed command signal Sc and to the rotational frequency signal Sr. |
