| 摘要 |
PURPOSE:To control an interrupted current stably through a simple circuit configuration by a constitution wherein a current regualtor is obtained through cascade connection of a proportional circuit and a proportional integrating circuit, and an operation parameter of each circuit is made variable according to an armature current value. CONSTITUTION:A current regulator to output an error signal alpha through comparing an armature current detected value Ia and an armature current command value Ia* is obtained through cascade connection of a proportional ciruit 10 and a proportional integrating circuit 12. An arrangement is then such that a parameter as proportional element and integrating element makes a change according to the strength of an armature current, for which, for example, a complementary field effect transistor 16 and an operational ampifier 16 are combined through both the circuits 10 and 12. A control response can now be kept constant irrespective of interrupted current, and hence a stable control on the armature current is obtainable in a controlling circuit using a thristor converter like static Leonard device. |
