Optical receiver is used to transform the optical pulse signal received from fiber-optic into current pulse signal by photoemission, and the output current signal is amplified. 光接收机的基本功能是用光检测器将光纤中的微弱的光脉冲信号通过光电效应转换成电脉冲信号,并且给予足够的放大。
Simulation results show that input signal and the output signal are both sinusoidal, and they also indicate that the double closed-loop structure could reduce output harmonious waves, improve the current quality and speed converter dynastic response. 仿真结果表明变换器的输出电压和输入电流都为正弦波,减少了输出谐波分量,提高了输入电流品质,加快了变换器的动态响应过程。
As for the fourth chapter, the testing results of the experiment kits are listed in detail, including the driving signal waves, the inversion circuit output waves and HF impulse current measurement circuit simulation waves. 第四章详细地给出系统测试结果,包括触发信号发生器的驱动波形、逆变电路输出的波形以及峰值采样电路仿真波形。
In each cell, a high frequency signal is injected into the output bus to transfer the output current information of the cell, so that the current information of other cells can be known by detecting the high frequency signals in the output bus. 在该控制方案中,各电源模块向输出母线注入一高频低幅值正弦信号,该信号频率与本模块输出电流的幅值成反比。
Detection circuit in vector system includes three parts: synchronous signal detection of source voltage, zero-crossing detection of cycloconverter load current, output phase current detection of cycloconverter. 在实际系统中,检测电路包括三个部分:同步信号检测、零电流检测、输出相电流检测。
The principle of the method and the signal processing are introduced. The relationship of Hall probe output and the square-wave current amplitude is found and the theoretical explanation is also given. 介绍方法的基本原理和信号处理方法,给出了方波电流幅度和霍尔输出的关系曲线,并从理论上进行了解释。
And we set the stage for implement the active filter by using Digital Signal Processor ( DSP) to select out the harmonic compensation signal in the collection source signals and convert it to the output current analog signal as the controlling signal of the linear power filter. 并采用数字信号处理器(DSP)实现从采集的电源信号中分析出谐波补偿信号,并将此信号转换成模拟信号输出,作为有源电力滤波器的控制信号,使有源电力滤波成为可能。
The reason of the instability of the image signal on oscilloscope in Frank-Hertz experiment with Ar-filled Frank-Hertz tube is that the output current of Frank-Hertz tube is too small, and contaminated with power frequency electromagnetic signal of environment, and the energy spectrum is influenced by noise. 充氩管夫兰克-赫兹实验装置的示波器显示图像不稳定,其原因是夫兰克-赫兹管输出电流太小,受到环境中的工频电磁波的污染,以及能谱信号受到了噪声相位的干扰。
The technique uses the AC signal on the output line to realize current share control. The method has some merits which are not in possession of the other current share methods and is suit for current share control with great number of module parallel converter system. 利用变换器输出端传递的交流信号来实现均流控制具有其它均流控制方法所不具备的优点,非常适用于大量模块并联时的均流控制。
Leakage protection application specific integrated circuit mainly used for leakage signal amplifying, electrical level transform, delay output driving etc. is the major critical component of the leakage protector ( residual current operated circuit breaker). 漏电保护专用集成电路是漏电保护器(剩余电流动作断路器)的关键组成器件,主要起漏电信号放大、电平转换、延时输出驱动等作用。
The current limit comparator and another sub-module current limit state machine work together to achieve the current control mode, and generate the PWM control signal, and also limit the maximum output current value. 其中电流极限比较器和另一个子模块电流极限状态机协同工作实现了电流控制模式,并且产生了PWM控制信号,同时还限定了最大的输出电流值。
The output of photomultiplier tube need to be transformed into voltage signal and then was entered into the lock-in amplifier for phase detection. That is because the output of the photomultiplier tube was current signal. 因为光电倍增管输出的是电流信号,所以要将电流信号转换成电压信号后再输入锁相放大器进行相位检测。
The analysis of APF control strategy, highlights the principles of signal generator and phase locked loop, harmonic separation method and concrete realization of FFT, adaptive control and parameters self regulation functions, principles of output current regulator controlled by direct pulse width. APF控制策略分析,重点介绍了信号发生器及锁相环的原理,FFT的谐波分离方法与具体实现,自适应控制与参数自整定功能,直接脉宽控制的输出电流调节器的原理。
It converts digital-controlling signal by microprocessor output into analog current or voltage signal needed for system controlling, it is a necessary key interface circuit as output controlling of digital-analog hybrid signal system. 它将微处理器输出的数字控制信号转换成系统控制需要的模拟电流或电压信号,是数模混合信号系统输出控制必不可少的关键接口电路。
A preliminary analysis of its generating mechanism is discussed. The effects of angle and distance between the signal source and the model to the output current of the new model are studied. 初步分析了其发电机理,探讨了这种发电机模型的输出特性,分析了激励信号源与电机模型间距离、角度对电机输出电流特性的影响。