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电路放大倍数
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  “电路放大倍数”译为未确定词的双语例句
     2. For solving conflict between frequency band and gain of amplifier, some research on design technology of amplifier circuit have been done, and a novel amplifier circuit has been obtained. And high gain and wide frequency band of RF amplifier have been achieved, the simulated results indicate that the gain and frequency band of this circuit are 27 and 1 GHz respectively, and meet the requirements for RF amplifier.
     2、针对射频放大器中放大倍数与频率带宽成反比的问题,进行了射频放大电路结构的优化设计技术研究,设计出一种新颖的放大电路结构,从模拟结果表明,该电路放大倍数可达到27倍,频率带宽达到1GHZ,基本满足了射频放大器的需要;
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     Some measures were put forword to improve the detecting sensitivity,such as choosing the photo-electricity tube with linked rectangle,high frequency response,low noise as detection parts and applying adjustable diaphragm,multi-adjustable comparison voltage.
     提出选择拼接长条形、具有高频响应、低噪声的光电接收管作为探测器件,采用可调光阑、多路可调比较电压、提高电路放大倍数的措施,可以提高天幕靶的探测灵敏度.
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  相似匹配句对
     Basic Direct Current Circuits
     直流电路
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     Digital ICs
     数字电路
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     Analysis and Simulative Study of Voltage Gain in Common Emitter Amplifier
     共射电路电压放大倍数的分析及其仿真研究
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     Measure of amplification of open-loop voltage in the negative feedback of voltage-series
     电压串联负反馈放大电路中开环电压放大倍数的测量
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The transient response of a shunt-peaked compensated video stage, with shunt resistance across the peaking coil, is analysed. It is shown that the effect of the shunt resistance is to suppress the oscillating characteristic of the compensated circuit, without altering either the amplification of the stage or the initial slope of the output signal. It may be used as a simple means for .adjusting the transient characteristics of such a compensated stage.

本文分析在并联补偿电感上加分路电阻的视频放大级的瞬态反应。结果指出,分路电阻的作用是减弱电路的振荡性,对于电路的放大倍数以及输出信号的起始陡度都没有影响,可以作为调节瞬态特性的一种简便的方法。

To analyse multi-loop negative feedback amplifier, a method with block diagram topology of many times loop-opening is put forward in this paper. The method is to make the multi-loop negative feedback amplifier monodirectionalize, then to compute multi-loop negative loop by loop. The general expression of amplification factor of multi-loop negative feedback amplifier is defined by recurrence formala. An example is given to show the use of this 'method. The correctness of the analyzing result of the exampls is...

To analyse multi-loop negative feedback amplifier, a method with block diagram topology of many times loop-opening is put forward in this paper. The method is to make the multi-loop negative feedback amplifier monodirectionalize, then to compute multi-loop negative loop by loop. The general expression of amplification factor of multi-loop negative feedback amplifier is defined by recurrence formala. An example is given to show the use of this 'method. The correctness of the analyzing result of the exampls is proved by small signal model mothod.

本文针对多环负反馈放大电路的分析问题,提出了多次拆环方框图分析法。这种分析方法的基本思想在于通过多次拆环来使多环负反馈放大电路单向化,然后分层次进行计算,并用递推形式定义了多环负反馈放大电路放大倍数的一般表达式。通过举例,说明了这种分析方法的应用,并用微变等效电路分析法,证明了分析结果的正确性。

The mathematical model of a brushless DC motor direct drive system with integral DSP motor controller ADMC 331 is deduced and a full digital vector control brushless DC motor direct drive system is introduced in this paper. The influence of the leading angle (lagging angle) of the current reference signal the parameters and drive mode of the system to the dynamic characteristics are analyzed. The results of simulation and experiment indicate that the deterioration of the dynamic characteristics of the system...

The mathematical model of a brushless DC motor direct drive system with integral DSP motor controller ADMC 331 is deduced and a full digital vector control brushless DC motor direct drive system is introduced in this paper. The influence of the leading angle (lagging angle) of the current reference signal the parameters and drive mode of the system to the dynamic characteristics are analyzed. The results of simulation and experiment indicate that the deterioration of the dynamic characteristics of the system is caused by leading angle (lagging angle) of the current reference signal. With the magnetic field orient control, the brushless DC motor system can obtain a maximum output torque and the best dynamic characteristics. When the gain of the current ratio regulator and enlargement factor of power inverter are increased, dynamic characteristics of the system will become better, when the compound drive mode of sine wave plus triple and quintuple harmonics is used, the dynamic characteristics of the system can be improved.

在推导了转子表面安装永磁体无刷直流电动机的数学模型的基础上,介绍了一种以集成数字信号处理器 ADMC 331为核心全数字矢量控制无刷直流电动机直接驱动系统。着重分析了电流参考信号超前角(滞后角)、系统参数和驱动方式对无刷直流电动机系统动态性能的影响。仿真及试验结果证明超前(或滞后)角的存在都会使系统的动态性能变差,无刷直流电动机系统处于磁场定向控制的情况下,电机的输出转矩最大,系统的动态性能最好;增大电流比例调节器增益和功率逆变驱动电路放大倍数可以使系统获得更好的动态性能;采用正弦波加三次、五次谐波的复合驱动方式时,系统的动态性能得到提高。

 
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