通过同步发电机激磁控制，可以增强电力系统稳定性。
Power system stability can be strengthened by controlling excitation of synchronous generators.
本文利用磁粉制动器输出转矩与激磁电流成线性这一特性来实现对张力的恒值控制。
This thesis uses the linearity relation of output torque and excitation current to control the tension.
在新型高梯度强磁设备中，采用直流电流互感器对其激磁电流进行测量与闭环控制可获得满意的效果。
D. C. mutual inductor was used in measuring and close-loop control of the exciting current of new high-gradient high-intensity magnetic separator and achieved satisfactory results.
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