• Control pulse is coupled into this pulse shaper by wavelength division multiplexer. Nonlinear phase shift of signal laser is induced by control pulse because of cross phase modulation.

    脉冲整形器利用波分复用器将控制光脉冲引入光纤环形镜中,控制光脉冲由于交叉相位调制在信号光上产生非线性附加

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  • The article theoretically analyzes the impact of self phase modulation caused by nonlinear refractive index on ultrashort pulse.

    理论上分析非线性折射率引起脉冲位相调制超短脉冲的影响

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  • The effect of wakefield, which depends on the initial pulse shape and width, leads to the asymmetry of pulse self phase modulation.

    波场效应导致脉冲相位调制对称性大小与初始脉冲形状脉宽大小有关。

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  • This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.

    PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究。

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  • The resonant soft switching inverter arc welding power source uses LCL type structure in the main circuit, and selects phase shifting pulse wide modulation technique in the control system.

    研制的谐振开关弧焊逆变电源电路采用新型LCL结构控制系统选用恒频控制方案。

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  • An circular radial shearing interferometer based on spatial phase modulation is proposed to measure the transient near infrared laser pulse wavefront with high precision.

    提出了一种基于空间相位调制技术可用于红外瞬态前高精度检测环形径向剪切干涉仪

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  • The effects of group-velocity mismatch and dispersion, third-order nonlinear phase modulation on pulse shape, spectrum distribution and conversion efficiency of second-harmonic pulse were discussed.

    详细讨论了速度失配、群速度色散三阶非线性相位调制效应对倍频光脉冲波形光谱转换效率影响。

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  • The torque ripple caused by diode freewheeling of the inactive phase during non-commutation state of PM brushless DC motor(BLDCM)when using the PWM_ON type of pulse width modulation was analyzed.

    分析传统PWM_ON调制方式无刷直流电动机在非换期间由于截止相反并联二极管续流而导致转矩脉动的原因。

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  • The optimum receiver performance of a hybrid pulse phase and position modulation(PAPM) over ultra-wideband(UWB) indoor fading channel model is analyzed.

    分析了UWB室内衰落信道模型脉冲幅度位置混合调制PAPM)最接收机性能

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  • The flow of current is controlled by phase shifted pulse width modulation.

    变换器中的电流大小和方向调制方式控制

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  • The three-phase inverters with the conventional space-vector pulse width modulation (SVPWM) have fast dynamic response, but it is complex to be implemented and needs highly speed microprocessor.

    基于传统空间矢量调制(SVPWM)控制的三相逆变器能够获得快速动态响应实现复杂需要高速微处理器

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  • Self-phase modulation of fiber does not affect the pulse shape of chaotic signal, however, its product of nonlinear phase shift can widen the chaotic signal spectrum.

    结果表明:自相位调制影响混沌信号脉冲形状产生非线性使混沌信号频谱展宽

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  • To realize deception jamming against Inverse Synthetic Aperture Radar, a good phase modulation coefficient that is used to modulate intercepted ISAR pulse is very important.

    实现ISAR欺骗干扰,设计好的假目标信号尤为重要,其关键在于如何产生一个好的相位调制系数截获对方ISAR信号进行调制。

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  • The simulations show that more amplitude modulations and phase perturbations lead to lower contrast of the compressed pulse, and bigger modulation cycle results in wider pre-pulse width.

    结果表明:啁啾光脉冲振幅调制深度相位扰动深度越大,则压缩后的光脉冲对比度越小;啁啾光脉冲的振幅调制周期和相位扰动周期越小,则压缩光脉冲的预脉冲宽度越大。

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  • Least-squares algorithm to fit a three-dimensional plane, it USES a pulse of consumer law, NRZ type differential phase modulation signal modeling and simulation analysis.

    利用最小二乘算法实现三维平面拟合采用脉冲消法,非归零差分相位调制信号建模仿真分析

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  • Firstly, we find that NOLM has a function of compressing optical pulse width, self-phase modulation (SPM) in NOLMs is a crucial reason.

    通过研究它光学特性,我们发现由于自相位调制(SPM),NOLM压缩脉冲脉功能

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  • The design method for hybrid waveforms utilizing ran-dom poly-cell code pulse position modulation (PPM) and pulse-to-pulse binary sequences phase modulation (PM) is introduced in this paper.

    该文提出了一种利用随机多元调制(PPM)间伪随机或随机二元序列相位调制(PM)相结合的混合波形设计方法

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  • In this paper, a new method to compress fundamental soliton pulses in the anomalous dispersion regime through cross phase modulation for pump pulse and soliton pulse is proposed.

    提出一种在色散区利用交叉相位调制效应压缩基本孤子脉冲方法

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  • The single phase H-bridge inverter can generate common-mode voltage due to the sine pulse width modulation(SPWM)and vector controller.

    采用调制矢量控制的单相H桥逆变产生电压后者会逆变器、电机及其相关设备产生危害。

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  • Based on the phase shift pulse width modulation technology, the mathematical non-linear model is developed.

    基于载波调制,建立了变频器的非线性数学模型

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  • A method of the three phase voltage-source inverter connecting to the grid is studied, which consists of space vector pulse width modulation and phase-locking method.

    本文研究三相电压源型逆变器实现并网所采用控制方法包括空间矢量调制法和锁相环技术。

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  • The suggested system makes use of a single phase HFAC pulse density modulation(PDM) converter as the interface to connect energy storage unit and power source for induction motor drive system.

    系统采用间接矢量控制技术,通过高频交流脉冲密度调制接口变换器功率进行协调控制。

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  • A novelty space vector pulse width modulation (SVPWM) technique for the two-phase inverter-fed asynchronous motors system is proposed, which can be widely used in the low or middle power level field.

    研究了二逆变器-异步电动机系统空间矢量调制(SVPWM)控制技术

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  • Aiming at the complicated design of three-phase PWM (Pulse Width Modulation) rectifier by using nonlinear feedback method, a linear feedback approach based on inverse system method is presented.

    针对三相调制(PWM)整流器控制采用非线性反馈方法使控制器设计复杂化问题,提出一种基于系统方法的三相pwm整流器的反馈线性化控制方法

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  • Chapter5: The effect of cross-phase modulation (XPM) on pulse propagation and SC spectrum generation in a dispersion-flattened and decreasing fiber are researched.

    第五章:研究了色散平坦光纤中,交叉相位调制效应对光脉冲传输以及超连续产生影响

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  • The interference and its processing method of long sequence phase-modulation signal of multitargets in pulse compression are studied emphatically.

    重点研究序列调相信号目标脉冲压缩相互影响及其处理方法

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  • The interference and its processing method of long sequence phase-modulation signal of multitargets in pulse compression are studied emphatically.

    重点研究序列调相信号目标脉冲压缩相互影响及其处理方法

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