Step motor control, by pulse by changing the order of electricity can change the motor rotation direction, change the pulse frequency can change the motor rotation speed.
步进电机受脉冲的控制，通过改变通电的顺序可改变电机的旋转方向，改变脉冲的频率可改变电机的旋转速度。
The influence of the parameters such as surface treatment state, laser output power, welding speed, protective atmosphere, and pulse frequency on the welding quality was studied.
研究了试件表面处理状态、保护气体、激光输出功率、焊接速度、激光脉冲频率等工艺参数对焊接质量的影响规律。
Taking MIG welding as example, under each control modes, the welding parameters such as the welding current, welding voltage, pulse frequency, etc.
以铝合金MIG焊为例，在每种脉冲模式下，分别改善焊接电流、焊接电压、脉冲频率、占空比等参数进行焊接并采集输出电流波形。
The semiconductor laser power supply features continuous adjustable laser pulse frequency and continuous adjustable laser driving current of 6~30A.
其中，激光频率设置为连续可调，激光器的驱动电流6~30A连续可调。
At the same time using Holzer sensors will be converted into pulse frequency motor speed feedback to the MCU, realize the speed closed-loop control, to achieve speed detection.
同时利用霍尔传感器将电机速度转换成脉冲频率反馈到单片机中，实现转速闭环控制，达到转速检测目的。
The results show that the deposit rate, composition and properties of coating change with the variation of duty ratio and pulse frequency.
结果表明，镀层的沉积速率、镀层成分及镀层的性能都随脉冲频率和占空比的变化而变化；
It is indicated from the process experiment of coin figure that smaller gap and higher surface quality are obtained by choosing higher main pulse frequency.
并根据设计的硬币花纹工艺试验表明，选择较高的主脉冲频率，可获得较小的加工间隙，进而获得良好的表面质量。
Sampling point number of every pulse cycle, instantaneous pulse frequency and period was gained with program operation.
经程序运算得到每个脉冲周期的采样点数，瞬时脉冲频率和周期。
Stepping motor control by pulse, by changing the order of power to change the direction of rotation motor, change the pulse frequency may change the motor rotation speed.
步进电机受脉冲的控制，通过改变通电的顺序可改变电机的旋转方向，改变脉冲的频率可改变电机的旋转速度。
This paper briefly introduced a practical system utilizing pulse frequency signal to achieve multipoint analogous monitoring.
简要介绍利用脉频信号实现多点模拟量监测的一种实用系统。
Acidizing fluids' type, concentration, jet pulse frequency, treatment time and interval treated may be selected according to degree of formation plugging.
该工艺可根据地层堵塞情况及程度，选择酸液种类、酸液浓度、射流脉冲频率、处理时间和处理层位。
The pulse frequency can be selected by EPLD. The voltage amplitude and pulse width of analog pulse can be adjusted by analog switches and digitally controlled potentiometers.
频率通过用可编程器件EPLD控制，而脉冲信号的宽度和幅度通过多路模拟开关和数字电位器调节。
In addition, the changes of the laser pulse width and pulse frequency to affect the weld width were investigated.
此外，对激光脉冲宽度及脉冲频率对焊缝宽度的影响作了深入研究。
When stepping motor works in some pulse frequency, it may have the problem of oscillation and miss of synchronization, so it should be avoided at full steam.
在一定控制脉冲频率下，步进电动机可能出现振荡与失步现象，严重影响步进电动机的运行，要严格防止这种情况发生。
It is indicated from the results that effected by the high frequency group pulse power, higher machining quality is obtained by choosing higher main pulse frequency.
结果表明，在高频群脉冲电源作用下，选择较高的主脉冲频率，可获得良好的加工质量。
It trans - forms the speed signal into pulse frequency signal to measure speed and indicate the speed.
本文给出了一种齿轮测速的方法，将转速信号转化为脉冲频率信号进行测量和显示。
As the increasing of pulse voltage and pulse frequency increasing. the refining effect was much more obviously.
随着脉冲电压的升高、脉冲频率的增加，细化效果更加显著。
Electrical parameters affecting gene transfer, such as the field strength ( Voltage ), pulse durations and pulse frequency ect. and optimum transfer conditions in murine hybridoma cells were studied.
研究了电场强度、脉冲宽度、脉冲次数等电场参数对基因转化频率的影响和小鼠杂交瘤细胞最适电转移条件。
In hydraulic transmission system, the pump's flow pulse frequency and the pipes base frequency affects each other, if the valves shut suddenly, resonance oscillation may take place.
液压系统中阀门(换向阀等)突然关闭时，液压泵的流量脉动频率和管道的基本频率相互作用，可能发生谐振。
It could be used to detect pulse frequency and provided with circuit for pulse cycle detection.
除了可以测脉冲频率外，还有专门测脉冲周期的电路。
The pulse frequency was not printed, it is estimated from the size of the coils and transformer that the frequency doesn't exceed 50 Mhz. Don't depend on this being fact, it's just a educated guess.
脉冲频率不能打印，估计从变压器线圈的大小和频率不超过50兆赫。不要依赖于这个被事实上，这只是一个猜测。
The effect of pulse frequency and pulse duration ratio on the abrasion resistance of gold coatings is investigated with pulse plating in cyanide free and trace cyanide baths.
研究了脉冲电镀在微氰镀金，无氰镀金体系中脉冲频率、脉冲占空比对镀金层耐磨性的影响。
The degradation of methyl orange was high, which was related with the peak value, pulse frequency and duty circle of positive pulse and anode area.
甲基橙的脱色程度与峰值电压、脉冲频率、占空比、阳极电极面积等有关。
A pulse frequency modulation (PFM) with discrete frequency is designed.
设计了一种离散频率的PF M控制方式。
The results show that kerf width decreases with pulse frequency increases under the same average power and pulse width.
结果表明，当平均功率和脉冲宽度相同时，切缝宽度随着脉冲频率的增大而减小；
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。
This research is aimed to get higher quality functions by use of single- chip processor and way of pulse frequency modulated (PFM) or pulse width modulated (PWM).
用单片机作为控制手段，采用脉冲调频（或调宽）方法，达到了较理想的控制品质。
Motor back to the corner and enter the total number of pulses proportional to the corresponding speed depends on the input pulse frequency.
电机总的回转角与输入脉冲数成正比例，相应的转速取决于输入脉冲频率。
Wider pulse width, low pulse frequency and medium peak power should be used when pulse laser welds magnesium Alloy.
脉冲激光焊接镁合金时应遵循较大脉宽、低频率、中等峰值功率的原则。
Power section can be tuned to change pressure pulse frequency.
动力装置功率可调，进而可改变压力脉冲频率；
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