This controller integrates pulse width modulation(PWM) and pulse density modulation(PDM) together, and can easily change between the two modulations.
该设计集成了脉冲宽度调制（PWM）和脉冲密度调制（PDM）两种调制方式，并可以在两者间切换。
A novel drive system with high frequency AC pulse density modulation for electric vehicles is proposed, and its operation principle and control method are studied in detail.
提出了一种用于电动汽车的高频交流脉冲密度驱动系统并阐述了系统的工作原理和控制方法。
A novel topologic structure of high frequency AC pulse density modulation converter is proposed, and its operation principle, control scheme and design are described in detail.
提出了一种新颖的高频交流脉冲密度调制变频器的拓扑结构，并详细阐述了工作原理、控制方案和设计方法。
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，对功率进行协调控制。
This paper presents a pulse density modulated (PDM) series resonant inverter developed for plastic film surface treater. The use of the PDM inverter enables the constant frequency and voltage.
该文介绍了一种采用脉冲密度调制(PDM)控制策略的串联谐振型塑料薄膜表面处理电源的研制。
A laser pulse can modify the electron's state so that it has the density distribution shown in green.
一束激光脉冲可以改变电子的状态，使得其有了图中绿色显示的密度分布。
A laser pulse can modify the electron s state so that it has the density distribution shown in green.
一束激光脉冲可以改变电子的状态，使得其有了图中绿色显示的密度分布。
In addition to other effects, a nuclear weapon detonated in or above the earth's atmosphere can create an electromagnetic pulse (EMP), a high-density electrical field.
除了其他影响，在地球大气层中或之上引爆的核武器会产生一种电磁脉冲(EMP)，这是一种高强度的电场。
Selection of laser pulse shape pulse duration flux density are discussed in pulsed laser microwelding and the experimental results are given.
讨论了脉冲激光微型焊接中，对于激光的脉冲形状、光脉冲宽度、光通量密度等的选择，并给出了实验结果。
Pulse power density directly influences ablation crater depth.
脉冲功率密度直接影响烧蚀凹坑深度。
The results show: pulse power density from CO2 laser reaches air breakdown threshold through thrice reflecting focus system, and plasma radiation phenomena is observed in the experiment.
结果表明，脉冲co 2激光功率密度经三次反射激光聚焦系统达到空气击穿阈值，实验中观察到等离子体发光现象。
With prolonged or shortened pulse electrical current sintering time, the density, hardness and bend toughness of the sintered materials decreased.
进一步延长或缩短脉冲电流烧结时间，烧结体的密度、硬度和弯曲强度反而下降。
Based on Semiconductor Opening switch (SOS) effect, the SOS can switch off current of great density within nanoseconds, which is applied to pulse power generator of inductive energy storage.
基于SOS效应工作的半导体断路开关可以在纳秒级时间内关断大密度电流，因此可应用于电感储能的脉冲功率发生器。
Aiming at the technology demand of advanced copper interconnection, the effect of pulse current density on cu layer properties such as resistance, crystal size and surface roughness were investigated.
针对先进纳米铜互连技术的要求，研究了脉冲电流密度对铜互连线电阻率、晶粒尺寸和表面粗糙度等性能的影响。
The heat conduction equations were developed for the pulsed laser beams and pulsed ion beams with the various pulse duration and energy density.
在脉冲激光束和脉冲离子束辐照条件下，针对不同脉冲作用时间和能量密度建立传热模型。
The close correlations between laser energy density, pulse duration, interaction time and junction depth, dopant distribution as well as junction resistance are mainly emphasized in this paper.
着重强调了激光能量密度、脉冲宽度、作用时间等工艺参数与结深、杂质分布以及结电阻之间的密切关联。
The effects of pulse peak current density on the texture and hardness of electrodeposited Ni were investigated.
考察了脉冲峰值电流密度对纳米晶镍镀层织构和硬度的影响。
Process of SBS' generating whose effecting factors include the photo-life in the medium, the shape of pump pulse and the power density was theoretically studied.
对SBS产生过程做了理论研究，分析了介质声子寿命、泵浦脉冲形状和功率密度等因素对SBS的影响。
The ultrashort pulse laser plasma source works in ultrashort time, with high energy density and is able to be tuned, controlled easily.
超短脉冲激光等离子体源作用时间超短，能量密度高，可调谐，易于控制。
It is used to excite pressure pulse in a sample by means of a single laser pulse which will lead to the change of charge density on the two electrodes.
它是用单束激光脉冲在样品内激发出一个压力脉冲，该压力脉冲将导致两电极上感应电荷层密度变化。
Due to the thermal-physical and optical differences between bonds and abrasives, suitable pulse power density is selected to remove bonds and protrude abrasives realizing the selective removal.
由于结合剂和磨粒之间存在热物理、光学性质差异，可通过选择合理的脉冲激光功率密度去除结合剂，凸出磨粒，实现选择性去除。
Crater depth versus pulse power density, average laser power, pulse repetition frequency and focal distances are built up through experiment.
试验建立起了凹坑深度与脉冲功率密度、激光平均功率、脉冲重复频率和离焦量之间的关系曲线。
The space crack arresting in metal die has been conducted on a new super-density pulse current generator model ZL-2 designed by author.
自主设计了改进型ZL - 2超强脉冲电流发生装置，采用它实现了金属模具试件中裂纹的电磁热止裂。
Conversion efficiency and pulse wave-forms will be affected by many factors due to the wide spectrum range and high intensity density of ultra-short pulses.
由于超短脉冲具有较宽的光谱范围及较高功率密度，倍频转换效率和谐波脉冲波形将受到许多因素的影响。
As power is the critical equipment of micro oxidation technology, its parameters, such as voltage, current density, pulse frequency, have a very important impact on the quality of the film.
作为实现微弧氧化技术关键的电源设备，其电参数，如电压、电流密度、脉冲频率、脉冲占空比等参数对膜层的质量有着极其重要的影响。
We also investigate the relationship between the total attenuation coefficient and the energy density, pulse duration, and pulse repetition.
我们研究了衰减系数和能量密度、脉冲宽度及脉冲频率之间的关系。
In the alloy analysis and the formation system of image of isotope density. It has adopted the pulse range analyzer to gather the high-speed datas and obtained the satisfactory effects.
在合金分析及同位素密度成像系统中，采用本脉冲幅度分析器进行高速数据采集，取得了满意的效果。
Many parameters, such as current density, time on and off, pulse frequence, can be interceded in pulse electrolysis. This offers a powerful means to control quality of layer and aggradation speed.
脉冲电解可以调解电流密度、 电流的通断时间、脉冲频率等多个参数，为控制金属沉积层的质量和沉积速度提供了有力的手段。
Many parameters, such as current density, time on and off, pulse frequence, can be interceded in pulse electrolysis. This offers a powerful means to control quality of layer and aggradation speed.
脉冲电解可以调解电流密度、 电流的通断时间、脉冲频率等多个参数，为控制金属沉积层的质量和沉积速度提供了有力的手段。
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