The design using ATMEL89C51 single chip to control the step-motor with its controller, driving circuit and LED display circuit to realize step motor open-loop control were introduced.
通过ATMEL89C 51单片机对步进电机进行控制，主要介绍了步进电机控制器、驱动电路和LED显示电路的设计，实现了步进电机的开环控制。
On the basis of three-phase inverting circuit, this paper describes how to make the control method of open loop system in closed loop system.
以三相逆变电路为基础，阐述了如何将开环系统的控制方法用于闭环系统，并且介绍了这种新的控制方法在实际中的应用，证明了该方法的有效性。
This paper gives a particular introduction about comparing circuit, and presents the reasons why the open-loop comparing circuit could not operate stably in a condition full of high-speed noise.
本文详细介绍了比较电路工作特点，分析了开环比较电路在高频噪声干扰环境中不稳定工作的原因。
The open-loop feedback portion of this circuit lets the microcontroller know that a fault condition exists on the line.
电路的开关反馈部分使微处理器分辨线路中存在的错误条件。
Theoretical calculations showed that bidirectional loop redundancy program can improve the data transmission reliability by about 1.7 times compared with unidirectional open circuit program.
理论计算表明，该方案比单向开路方案的数据传输可靠性提高了约1.7倍。
A control circuit comprises a voltage open-loop control circuit and a semi-periodic current hysteresis-loop control circuit.
控制电路包含电压开环控制电路，半周期电流滞环控制电路。
The circuit does not require the open-loop feedback portion of the circuit for the current loop to operate; you can omit it for further cost savings.
这个电路的运行不需要电流环的开环反馈部分，为节省成本可省略这部分。
The circuit does not require the open-loop feedback portion of the circuit for the current loop to operate; you can omit it for further cost savings.
这个电路的运行不需要电流环的开环反馈部分，为节省成本可省略这部分。
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