Utilizing the linearity peculiarity of the exciting current of magnetic powder brake and brake moment, the closed loop control system is designed.

利用磁粉制动器的励磁电流与制动力矩成线性关系这一特性，设计了闭环张力控制系统。

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A kind of three-dimensional mutually non-correlative exciting signals generator is designed, and the closed-loop identification experiment of motion platform is done.

本文设计了一种三维互不相关系统辨识激励信号发生器，对运动平台进行了闭环辨识试验。

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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.

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。

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