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pulse pack
相关语句
  脉冲填充
     Obtains time interval of two signals passing zero point by over zero examining phase,calculates the quantity of pulse of the time interval by measurement circuit combining the pulse pack methoed with one-chip computer,gets the phase place difference.
     通过过零检相来获取两信号过零点时间间隔,采用脉冲填充法与单片机相结合的测量电路,计算出时间间隔的脉冲个数,进而求得相位差值;
短句来源
  相似匹配句对
     Pulse Subtracter
     脉冲减法器
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     On Arrythmia Pulse
     乍疏乍数脉之我见
短句来源
     Color and Pack
     色彩与包装
短句来源
     Sino - Pack 2000
     第七届中国国际包装工业展览会将于2000年3月在广州举行
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This article analyzes the difficulties in the design of using large pulse packing column as reactionextraction column. The calculation method for reaction extraction coupling packing column is established based on the cyclohexanone oximation reaction in caprolactam plant. The preliminary design for reaction and extraction coupling column has been carried out. This article also puts forward the method on optimizing the reactor structure and increasing the extraction reaction efficiency using high...

This article analyzes the difficulties in the design of using large pulse packing column as reactionextraction column. The calculation method for reaction extraction coupling packing column is established based on the cyclohexanone oximation reaction in caprolactam plant. The preliminary design for reaction and extraction coupling column has been carried out. This article also puts forward the method on optimizing the reactor structure and increasing the extraction reaction efficiency using high efficient packing material.

分析了大型脉冲填料塔应用于反应萃取塔设计的技术难点 ,以己内酰胺生产装置中环己酮肟化反应为基础 ,建立了反应萃取耦合填料塔的计算方法 ,对反应和萃取耦合塔进行了初步设计 ,提出了优化反应器结构、采用高效填料以提高萃取反应效率的方法

Obtains time interval of two signals passing zero point by over zero examining phase,calculates the quantity of pulse of the time interval by measurement circuit combining the pulse pack methoed with one-chip computer,gets the phase place difference.Introduction of the double frequency circuit of phase-locked makes the benchmark pack pulse change with signal frequency,thus eliminates the error caused by frequency change.Switches the sampling passway by data selector,realizes the compensation...

Obtains time interval of two signals passing zero point by over zero examining phase,calculates the quantity of pulse of the time interval by measurement circuit combining the pulse pack methoed with one-chip computer,gets the phase place difference.Introduction of the double frequency circuit of phase-locked makes the benchmark pack pulse change with signal frequency,thus eliminates the error caused by frequency change.Switches the sampling passway by data selector,realizes the compensation for zero point excursion.Taking STC89C52 high-speed one-chip computer and phase place exemining circuit as core realizes this system,the measurement precision of phase place is±0.02°.

通过过零检相来获取两信号过零点时间间隔,采用脉冲填充法与单片机相结合的测量电路,计算出时间间隔的脉冲个数,进而求得相位差值;引入锁相倍频电路,使基准填充脉冲能随着信号频率的变化而变化,从而消除了频率变化引起的误差;利用数据选择器对采样通道切换,实现了零点漂移的补偿;以STC89C52高速单片机和相位检测电路为核心实现该系统,相位测量误差限于±0.02°.

In electric measurement,in order to examine phase place precisely,two over-zero point time in tervals are obtained through over-zero examination.By adopting measurement circuit combining pulse pack with one-chip computer,the number of pulses of time intervals is calculated to get phase place difference.Phase locking double frequency circuit is introduced to make the datum pack pulse change with signal frequency so as to dispel the error caused by frequency change.Sampling passway is made...

In electric measurement,in order to examine phase place precisely,two over-zero point time in tervals are obtained through over-zero examination.By adopting measurement circuit combining pulse pack with one-chip computer,the number of pulses of time intervals is calculated to get phase place difference.Phase locking double frequency circuit is introduced to make the datum pack pulse change with signal frequency so as to dispel the error caused by frequency change.Sampling passway is made to switch over with the data selector to fulfill the compensation of zero point drifts.The results show that phase place can reach the precision of ±0.20.

在电气测量时,为了高精度检测相位,通过过零检相来获取2信号过零点时间间隔,采用脉冲填充法与STC89C52高速单片相结合的测量电路,计算出时间间隔的脉冲个数,进而求得相位差值;并引入锁相倍频电路,使基准填充脉冲随着信号频率而变化,消除了频率变化引起的误差;利用数据选择器对采样通道切换,实现了零点漂移的补偿.结果表明,相位测量精度可达±0.020.

 
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