DC MOTOR DRIVE CONTROLLER

摘要

PROBLEM TO BE SOLVED: To attain downsizing and cost reduction in a drive circuit by restraining peak current which passes through a DC motor, while avoiding degradation in the rising characteristics of the DC motor. SOLUTION: The current passing through a DC motor 14 is detected by a current detecting means 17, and the on/off duty of a drive circuit 15 is computed by a duty computing means 19, based on a current difference obtained by subtracting the current detected by the current detecting means 17 from the preset target current. The driving circuit 15 is by a duty control means 20, based on the computed results of the duty computing means 19.