转速环的输出作为电流环的输入。

The output of rev loop is the input of current loop.

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在此基础上，对转速环电流环双环控制系统进行了控制器结构选择与参数设计。

Controller structure is chosen and parameters are designed for double-loop controlling system based on the model.

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调速部分为双闭环直流调速系统，由转速环(内环)和电流环(外环)串联组成。

The part of timing is a double closed loop DC timing system, and it is composed of rev loop (internal loop) and current loop (external), which are series-wound.

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