1) Pulse Rotation
脉冲旋转
1.
This paper proposed an effective sinusoidal pulse width modulation(SPWM) control scheme for a cascade NPC inverter in which a pulse encode and pulse rotation are fulfilled for all modulation indices.
提出一种有效的正弦脉宽调制(sinusoidal pulse width modulation,SPWM)控制方案,它在整个调制比范围内采用脉冲编码和脉冲旋转,平衡所有模块单元的电压与功率,同时使各模块单元中两串联电容电压平衡,各模块以较低的器件开关频率实现较高频率的相电压脉冲。
2.
Then the paper proposes a new effective SPWM control scheme for the cascaded NPC inverter in which a pulse encode and pulse rotation are fulfilled for all modulation indices.
在介绍级联中点箝位逆变器工作原理的基础上,分析了载波层叠法和载波移相法这两种典型的多载波控制算法,然后提出一种基于脉冲编码、脉冲动态旋转的单载波SPWM脉冲旋转控制技术。
2) impulse and rotary stirring
脉冲旋转搅拌
1.
Simulation experiments for hot metal desulfurization in laboratory with impulse and rotary stirring-injection method were carried out and compared with existing one-way stirring.
采取实验室物理模拟的方法,对新型的脉冲旋转搅拌喷吹与原单向搅拌的效果进行了对比实验。
2.
Simulation experiments for hot metal desulfurization in laboratory with impulse and rotary stirring-injection methods were carried out compared with the existing one-way stirring.
采取实验室物理模拟的方法,对新型的脉冲旋转搅拌喷吹与原单向搅拌效果进行了对比实验。
3) rotary pulser
旋转阀脉冲发生器
1.
APS rotary pulser MWD system is developed.
文章介绍了一种新型的MWD无线随钻测量系统(APS旋转阀定向测量系统)的结构组成与工作原理,阐述了该系统中旋转阀脉冲发生器的功能特点,分析了该系统在现场应用中出现的问题,提出阀系结构的技术改进及软件升级的具体方法,通过现场实践,该系统能够满足应用需求,具有广泛的应用前景。
4) pulsed rotating-spray transfer
脉冲旋转喷射过渡
1.
It is indicated that if the choosed peak value of pulsed current is higher than the transition current(critical current)of continuous rotating spray transfer,the characteristics of metal transfer may change from pulsed axial streaming transfer to pulsed rotating-spray transfer with the continuous increase of pulse energy,simultaneously, the changes in are ph.
试验结果指出：如果选定的脉冲峰值电流值高于连续旋转喷射过渡的转变电流值，随着脉冲能量的不断增大，熔滴过渡特性将从脉冲轴向射流过渡转变为脉冲旋转喷射过渡，同时焊接电弧现象和焊缝成形等亦发生变化，例如焊缝熔宽与焊丝熔化速度会突然的增大。
5) revolving digital pulse generator
旋转数字脉冲发生器
补充资料：脉冲
1.指电流或电压短暂的起伏变化。各种高频脉冲广泛用在无线电技术中。 2.指变化规律类似电脉冲的现象。如脉冲激光器。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条