| 摘要 |
PROBLEM TO BE SOLVED: To prevent windup of integral compensation and stabilize current control when the proportional/integral compensation or the like is performed for stabilization of control. SOLUTION: An armature chopper controls an armature current with armature current control means 141, 142 which control a running command signal with a current command given via an LPF means 19 and a rate command means 20 or the like and a feedback signal given by armature current detecting means 143, 144 and the armature current control means is provided with a running limiter 148 to limit duty of the armature chopper depending on the running command signal. A field chopper detects an armature current with the armature current detecting means, defines a pattern indicating the armature current as a field current command via a filter or the like to stabilize the signal, and conducts field current control with a field current control means 161 which controls a current with the field current command and the feedback signal given by the field current detecting means. |
