Scale of premix gas is closely relative to single pulse energy, stability of discharge, laser lifetime and so on. 激光系统的混合气体配比与单脉冲能量、放电稳定性和寿命等性能参数有密切关系。
If the light wave as the narrow pulse signal carrier, the relative bandwidth of pulse transmission can be effectively reduced; 如果以光波做为载波入行狭脉冲信号的传输,否以无效的加长脉冲信号的相闭于带阔;
Timing jitter induced by SPM and IXPM could be suppressed totally by adjusting the relative phase between the center frequency of the pulse and the ripples. 通过调整脉冲的中心频率与纹波之间的相位差将有可能完全抑制时间抖动。
For the ultrasonic motor driver, the output voltage and energy efficiency is relative to the duty cycle of the driving pulse. The rationality of 40% duty cycle is proved in this paper firstly. 首先分析了超声电机电源驱动信号的占空比与输出电压幅值和能量利用率之间的关系,提出采用40%占空比驱动信号的合理性。
You may apply the relative difference of pulse counts to watch the change of tire pressure in the design of indirect tire pressure watch system. 进行间接轮胎气压监视系统设计时,可以利用脉冲数的相对差值监测轮胎气压的变化。
A universal software tool is developed for the calculation of relative gain coefficient, peak gain spectrum, pulse transient characteristics, output frequency characteristics, and injection-locking characteristics of pulsed CO_2 lasers. 开发了一个通用的脉冲CO2激光器软件工具。可计算脉冲CO2激光器的相对增益系数、峰值增益谱、脉冲瞬态特性、输出频率特性和注入锁定特性。
The shift of impurity radiation peaking relative to the injection pulse is caused by the molecular agglomeration. 对应于分子束注入脉冲,分子束的团簇效应引起了杂质辐射峰化时间的错位。
Research on the Effect Factors for the Relative Difference of the Pulse Counts of the Wheel Speed Sensor under Lower Slip Rate Condition 低滑移率条件下轮速传感器脉冲数相对差值的影响因素研究
Based on the phase locking of the two beams from the He-Ne laser, the relative phase difference control for femtosecond laser pulse pair is achieved over a large range. 在对He-Ne激光输出的两束光实现相位锁定的基础上,进而提出了一种可对于超短激光双脉冲相对相位差实现超大行程控制的方法。
The dynamic phase locking for the beam from the He-Ne laser and the relative phase difference control for femtosecond laser pulse pair are validated experimentally. 对He-Ne激光的动态相位锁定、以及飞秒激光脉冲对的相对相位差控制分别作了实验验证。
The results show that the two kinds of interface waves exist at the liquid-solid interface and also exist at air-solid interface, but the relative amplitude, the pulse duration for the corresponding wave component at the two kinds of fluid-solid interfaces are different. 计算结果表明,这2种界面波不但存在于液-固界面,而且存在于气-固界面,但这2种流-固界面上波成分的相对幅度、脉冲持续时间不同。
Numerical results demonstrate that the photodissociation probability is sensitive to relative phase of the two-color laser, and the momentum distribution of fragments are also different with different relative phase at the end of pulse. 数值结果显示,光解离几率灵敏地随双色光之间的相对相位的变化而变化,光解离碎片的动量分布也与相对相位的大小有关;
The paper introduced the relative content of receiver for multiple pulse signals, and gives comparation of bit-error-rate under the different pulse repeat frequency, modulation means and different modulation by MATLAB simulation. 最后,本文简单地叙述了多脉冲信号接收机的相关知识,并且也通过仿真给出了不同脉冲重复频率下、不同判决方法和不同调制方法所引起的误码率的对比。
This system which has high reliability and strong antijamming ability can be used to obtain in real time the shape information and the shape center position of the laser spot on target, absolute time and relative time that the laser pulse arrive on the target. 系统可实时监测光斑的形状和形心位置及激光脉冲的绝对时和相对时,激光脉冲发射时间测量精度优于0.2μs。
Through the road test on JETTA passenger car, research the effect of the vehicle velocity, load and tire pressure on the relative difference of pulse counts of wheel sensors. 通过对捷达轿车的道路试验,研究了汽车行驶速度、载荷及轮胎气压对轮速传感器脉冲数相对差值的影响。
Furthermore, single pulse laser beam is captured fully and stably by synchronously triggering laser. Thus the relative intensity distribution and beam quality parameters of pulse CO2 laser we are obtained. 并采用同步发射激光技术,保证了单次激光脉冲的完整、稳定捕获,得到了脉冲CO2激光相对光强分布及相关光束质量参数。
The key components of a micro EDM tool include micro feed mechanism of electrode, attached unit producing relative movement between electrode and workpiece, micro pulse power supply and a subsystem to detect and control machining process, etc. 微细电火花加工的关键设备技术涉及电极的微进给伺服机构、电极和工件的附加相对运动机构、微小能量放电电源以及加工状态检测与控制系统等。
The paper focuses on the effect of axially relative position of coil and work on pulse force distribution, though there are some other factors. 影响磁脉冲力的因素很多,但是本文主要研究线圈与工件的轴向相对位置对磁脉冲力分布的影响;
The relative slipping velocity law of pulse electrochemical finishing in gears are studied in the paper. 研究齿轮脉冲电化学光整加工过程中电极间相对滑动速度的变化规律。
The interaction distance relates to the standard deviation, the initial relative phases, the pulse width and the relative amplitude. 相互作用距离与初始间隔、初始相对相位、脉宽和初始相对振幅有关。
The results show that the compression ratio and compressed peak power of the bright pulse depend upon the initial relative peak power of the dark pulse to the bright pulse. 结果表明,亮脉冲的压缩程度与暗孤子相对于亮脉冲的初始峰值功率有关。
The study result shows that: in the single-photon resonance case, relative carrier-envelope phase has evident control of pulse propagating form and spectra characteristic of two-color ultrashort laser pulses with small area. 结果表明:在单光子共振情况中,相对载波包络位相对小面积双色脉冲的传播形式及频谱特性有显著的控制作用。
When the area of input two-color pulse increases, relative carrier-envelope phase dependence of pulse form and spectra characteristic is weaker. 当入射双色脉冲面积增大时,脉冲波形及频谱特性对相对载波包络位相的依赖性有所减弱。
Theoretical predictions for the relationships between relative signal intensities and the optimal pulse flip angles are in excellent agreement with experimental results. 实验得到的相对信号强度与脉冲翻转角关系充分肯定了理论预测的准确性。
The device can be applied to measure the relative value of laser pulse peak power, therefore it can monitor the fluctuation of output energy when Z-scan experiment is carried out. 本装置能够实现对激光脉冲峰值功率相对值的测量,在Z扫描实验时,达到对激光器输出能量变化进行实时监测的目的。
Based on those features, we extract 8 relative features from pulse signals and experimental results show that the relative features is more effective than original features. 在此基础上本文对上述三类脉象信号样本进行观察和分析后提取了8维相对时域特征用于分类,实验表明这些相对时域特征的效果优于原有的时域特征。
Feasibility, technique and relative technology of pulse stacking has been studied and stable precisely programmable shaped pulse was obtained. 对脉冲堆积时域整形的基本理论进行了详细的分析研究,实验研究了技术的可行性、方法和相关工程技术,获得了稳定的高精度可编程整形脉冲。
Discrete Fourier Transform ( DFT) is used to realize the coherent integration, which improves the relative ambiguous frequency estimation precision of coherent pulse group. This algorithm has low computational complexity and high estimation precision for Doppler frequency rate-of-change. 针对单载频雷达脉冲信号,提出了基于相关的脉冲群间多普勒频率变化率高精度估计算法,通过离散傅立叶变换实现了相参积累,提高了相参脉冲群相对模糊频率估计精度。
Employing a sample consisting of 82 GRB pulses we find that the spectral lags are correlated with the pulse widths. However, there have no correlation between the relative spectral lags and the relative pulse widths. 我们运用一个包含82个伽玛暴脉冲的样本研究发现:伽玛暴谱延迟和脉冲宽度之间存在一个较强的相关关系,而相对谱延迟和相对脉冲宽度之间却没有相关性。