The electrical signal may be regulated by a simple potentiometer or one of CEI's input hand controllers "Joy Sticks", or by one of our electronic cards in open or closed-loop operation.

电信号可以通过简单的电位器或一个CEI的输入人工控制器“操纵杆”，或者电卡在开路或者闭环电路运行中进行调节。

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The article also lays stress on proposing a practical open loop control system. The system is of many advantages, such as simple structure, low cost, and reliable operation, etc.

并着重提出了一种实用的开环控制系统，因它具有结构简单、成本低、工作可靠等特点。

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While on the condition of the current-open loop, software will take charge of all the control of the motor with low-speed chopped operation.

在电流开环情况下，完全由软件实现电机的低速斩波运行。

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