A new channel-selecting control method in which keyboard is scanned by hardware circuit for searching the closed key is presented.
提出了一种采用硬件电路扫描键盘，搜索闭合的按键开关，实现通道选择控制的新方法。
The circuit has the function of thermal shutdown, current limiting and closed control loop of current and voltage.
该电路具有过热保护、短路保护功能和电流、电压闭环控制回路功能。
Dynamic performance of closed circuit control system is improved, and the tests are carried out to testify the reasonableness and the feasibility of the designed PLC control system.
同时，使闭环控制系统动态性能大大提高。通过试验，证实了控制系统设计的可行性和合理性。
DC constant current power supply circuit based on current closed-loop feedback control is brought (forward) in this paper and how to design the circuit is also emphatically introduced.
开发了一种基于电流闭环反馈控制的数控直流恒流源，介绍了该电路的设计思路。
Ac asynchronous motor closed circuit vector's control system with former microprocessor is characterized by low speed and inaccuracy.
传统的微处理器对交流异步电机矢量控制，存在着速度和精度的缺陷。
The paper introduces the design of closed-circuit soft water cooling stave control System used in No. 3 blast furnace in Baosteel.
本文介绍了在宝钢3号高炉上采用的软水密闭循环冷却壁控制系统的设计。
The design idea, principle scheme and executive result for restricting zero drift of gas sensors by means of closed loop control circuit are reported.
一种利用闭环控制电路抑制气敏元件零点漂移的设计思想、原理框图及实验结果。
An aeroengine model can be identified from actual closed-loop engine test data if pseudorandom binary sequence as test signal ACTS on feedback circuit of the closed-loop control system.
本文介绍了在航空发动机闭环控制系统的反馈通路上施加伪随机试验信号时，对发动机模型参数进行辨识的方法。
The closed circuit control system with frequency conversion for adjusting speed controlled by industrial computer is introduced with its control function and realization.
文章介绍了一种由工业计算机控制的变频调速闭环控制系统，同时介绍了该系统的控制功能和电气实现。
The utility model provides a food sterilizing cabinet with air wet removing, which is mainly composed of a control circuit and an air closed-circuit circulation system.
本实用新型提供了一种空气去湿食品消毒柜，它主要由控制电路和空气闭路循环系统组成。
This article presents a design of permanent magnetic brushless DC motor control system and mainly involves the hardware circuit design of speed closed loop and power module drive.
介绍了一种永磁无刷直流电机控制系统的设计方案，主要涉及速度闭环和功率模块驱动的硬件电路设计；并通过实验证明该设计可直接用于小型无刷直流电机的控制。
The chip of TL494 functions very strong, and its operation frequency is high. The double closed loop control of output voltage and current is realized by integrating some simple hardware circuit.
TL 494芯片功能强，工作频率高，通过外扩简单的硬件电路即可实现输出电压电流的双闭环控制。
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。
Therefore the research of pump-control-motor closed-circuit for mobile hydraulics driving system and key hydraulic components will have great significance.
因此对工程机械行走驱动泵控马达闭式回路系统及关键液压元件开展研究将有重大意义。
Further study of Circuit exchange regulator presents, takes the starting current as feedback signal to complete closed-loop control of soft start control of the three-phase induction motor.
对交流调压电路进行了进一步的研究，利用起动电流信号作为反馈量，对三相感应电动机软起动控制系统进行闭环控制。
Further study of Circuit exchange regulator presents, takes the starting current as feedback signal to complete closed-loop control of soft start control of the three-phase induction motor.
对交流调压电路进行了进一步的研究，利用起动电流信号作为反馈量，对三相感应电动机软起动控制系统进行闭环控制。
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