Pulse signal is connected by the customer . signal can be sine wave or square wave . modulation frequency can be to 1mhz few model can be to 10mhz ; inner modulation type no need signal from out side 外调制式激光器留有专用的信号接口，由用户接入脉冲信号，信号可以是正弦波,也可以是方波，调制频率可到1mhz个别型号调制频率可到10mhz 。
At the end of the paper , a novel two - stage low frequency square wave electronic ballast for hid lamps is proposed with detail design process . simulation and experimental results are provided to verify its superiority 最后论文提出了一种新型的两级式低频方波电子镇流器，并给出了详细的设计方法，论文同时提供了仿真及实验结果对电路进行了验证。
Make a comparison among different driving signals , including square , triangle , sinusoidal and sawtooth wave , it is shown that the square wave has the best driving result and the sawtooth wave has the worst one 实验还对方波、三角波、正旋波及锯齿波等几种不同的驱动信号产生微射流的效果进行了对比。结果表明方波信号产生的微射流最强，锯齿波产生的最弱。
The method using square wave excitation presented by the paper is verified by theories and experiments that the method meets the requirement of accuracy , and this method ' s application simplifies manipulations and improve greatly the calibration efficiency 其中本文提出的方波信号激励的比较校准法，理论和实验证明不仅满足校准精度要求，而且简化操作，大大提高了校准的效率。
This paper gives a method to measure the conductivity base on choosing frequency . after adding to the electrode with two ac square waves of appropriate frequencies , we can measure the output dc voltage of the circuit 本论文提出了一种选频电导率测量方法，选择两个合适频率的交流方波施加于电极，测出电路输出直流电压，通过解方程组求出时间常数，然后求得溶液电阻，进而得到溶液电导率。
In the presence of major interference from ascorbic acid or dopamine , the peak potential of uric acid shifts less than 15 mv and the peak current changes slightly obtained square wave voltammetric ( swv ) response at the modified bdd electrode 研究发现在方波伏安信号中常见干扰物抗坏血酸或多巴胺与尿酸共存检测时尿酸在修饰电极上的特征峰电位变化不超过15mv ,峰电流变化仅为几微安培。
In view of predecessors " research achievements we put forward a method using square wave excitation and the fast furrier transformation ( fft ) to realize the comparison calibration for the calibration system of piezoelectric accelerometer 在吸收前人研究成果的基础上，文中提出了工作用压电加速度传感器校准系统应用方波信号激励，同时应用快速傅立叶变换( fft )的方法来实现比较法校准。
Then the paper describes the developing process of elevator door drive system in which square wave bldcm is adopted . when presenting hardware and software of this system , in particular the paper narrates speed regulation means and torque ripple suppression strategy 本文然后详细介绍了采用方波无刷直流电机的电梯门机控制系统的研制过程，并在介绍系统的硬件和软件设计方案时，同时研究了所使用的电机的调速方法和转矩脉动抑制策略。
The whole processing procedure consists of three steps , i . e . , inputting the noisy ap signal to a low - pass filter , constructing a corresponding square wave according to the output of the low - pass filter and then applying it to the wave forming filter to get noise free ap signal 利用矩形波重建方法，将带噪声动作电位信号通过低通滤波器建立相应的矩形波，然后再采用计算机辅助设计法设计一个波形形成数字滤波器，使矩形波通过此滤波器后重建出纯净的细胞动作电位。
Theory analysis and practical measurements of response characteristics are done about two couplers . from the aspect of capacitive coupling , the frequency response characteristics of two sensors are assessed in terms of square wave response . at the same time , the amplitude - frequency relationship characteristics are calculated on the base of antenna model 对所研制的两种内置传感器响应特性进行理论分析与实际测量：从电容耦合原理角度采用方波响应分析传感器及整个测试系统的频率响应特性，从天线模型角度分析幅频响应特性，局部放电实测结果也验证了设计的传感器的性能优良。
