2、

The laser output energy, dynamic to static ratio, pulse bandwidth ana spectral line width etc. by Q-switching ware mea-sured and analysed theoretically.

测量了调Q后激光输出的能量、动静比、脉宽、谱宽等,并从理论上进行了一些分析。

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3、

Research on Machine Vision of LED Light Source Technology Based on Pulse Width Modulation

基于PWM的LED机器视觉光源技术的研究

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4、

During the period of the work, surface roughness will be influenced by discharging current, which includes influencing on discharging current energy, width of current pulse and polarity of current.

在加工过程中,表面粗糙度会受到放电电流的影响,其中包括放电电流能量、电流脉冲宽度以及电流极性的影响。

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5、

The experimental results show that pulse width decreases with the increasing of quartz powder doping density and liquid depth.

实验结果表明,产生KrF短脉冲的宽度随酒精中掺杂石英粉末浓度、酒精悬浊液厚度、增加而减小。

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6、

The high frequency switch technology of large power is developed successfully by the perfect control of PWM ( Pulse Width Modulation) and ZCC ( Zero Current Control), ZVC ( Zero Voltage Control) in the unit.

通过PWM(脉宽调制)和ZCC(零电流控制)、ZVC(零电压控制)的完整控制,成功开发应用了大功率高频开关技术。

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7、

The paper presents a novel ultra-audio frequency ( UAF) induction welding power based on ZCS-PWM ( Zero Current Switching-Pulse Width Modulation) technology.

介绍一种基于ZCS-PWM(零电流开关-脉宽调制)技术的新型超音频感应焊接电源。

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8、

A new method to estimate the width of sub-pulse of BPSK signal is proposed.

提出了一种对二相编码(BPSK)信号子脉冲宽度估计的新方法.

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9、

Deficiently, experience is needed in deciding the pulse width and the shift of the wavelet.

不足的是,在选择小波的宽度和平移量时需要一定的经验。

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10、

The limit of DGD monitored by DOP technique can be close to 2 bit periods if pulse width index equals to 0.45;

当脉宽指数为0.45时,对差分群延迟的跟踪上限高达2个位周期;

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11、

This paper focuses on the large power AFW three-dimension wide-area regulation and control system based on blade precision processing, The parameters such as amplitude, frequency and width which determine the pulse power density could be regulated and controlled automatically for wide ranges.

本文研究了基于叶片加工的大功率脉冲激光幅频宽三维广域调控系统,决定脉冲功率密度的幅值、频率和宽度等参数可大范围自动调控。

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12、

The results show: both pulse width and bandwidth are widened in positive dispersion medium, but pulse width is getting more and more narrow along propagating direction in negative dispersion medium, which is a typical soliton pulse.

结果表明:在正色散介质中,脉宽及带宽均展宽,而在负色散介质中,脉冲沿传播方向越来越窄,表现为孤子效应。

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13、

Pulse width: It refers to the emission time of laser beams.

脉冲宽度: 这和激光束的散发时间有关.

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14、

The pulse width, pulse energy and pulse repetition rate of different output coupler are measured.

测量了不同透过率输出镜条件下,输出调Q脉冲的宽度、能量及脉冲重复率。

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15、

The extraction methods of pulse signal envelope feature using the complex wavelet transform and Hilbert transform are discussed in the article, by which we extract the rising edge, falling edge, envelope top drop and pulse width as the final feature values.

研究了对脉冲信号包络特征的提取方法,利用复小波变换和希尔伯特变换获取稳态信号包络,提取上升沿、下降沿、包络顶降以及脉宽等参数作为稳态特征。

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16、

The paper focuses on component part of digital pulse MIG welding inverter power. Main circuit, control circuit, pulse width modulation ( PWM) circuit, drive circuit and wire feeding circuit are respectively analyzed.

论文还重点介绍了数字化脉冲MIG焊软开关逆变弧焊电源的组成结构,并分别就软开关逆变焊机的主电路、控制电路、保护电路、驱动电路以及送丝电路做了详细的分析。

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17、

When Q-switch and gain switch were applied the peak pulse power was increased and pulse width decreased.

利用增益开关和Q开关双机制作用,压窄了调Q脉宽,提高了输出功率。

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18、

On idle, using the voltage-feedback control makes PWM modulator output the pulse disjointedly with blocking-oscillation frequency lowered and the pulse width narrowed. Accordingly not only the no-load loss is less, but also the transformer is not easy to saturate.

系统在空载时由于采用电压反馈控制使PWM调制器间断地输出脉冲,间歇振荡的频率低而脉冲宽度窄,不但空载损耗小,而且使变压器不易饱和;

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19、

It is found that pump pulse intensity is seriously decreased and pulse width is increased by GVD.

结果表明,群速度色散会使泵浦光脉宽增加,功率密度降低;

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20、

Therefore, a controllable couplers used pulse width modulation.

所以一个可控的耦合器用来调制宽脉冲.

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