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。
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；
Varying frequency is used to control AC pulse frequency in normal welding state.
正常焊接状态时变频控制交流脉冲频率。
However, LH pulse frequency and LH pulse amplitude were unaffected by treatments.
但LH的脉冲频率和幅度不受上述处理的影响。
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。
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。
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。
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；
The results showed that the kerf width increases with the increase of the power density, pulse frequency and pulse width;
结果表明，缝宽随激光功率密度、频率以及脉宽的增加而加大；
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。
Describes a new design of pulse frequency dividers in which timers NE556 and sequence control unijunction transistors are used.
利用定时器ne556和程控单结晶体管，设计了一种新型多路脉冲分配器。
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；
Based on the model, the relationship between the main pulse frequency of supply power and the balanceable inter-electrode gap is discussed.
给出了脉冲电化学加工极间平衡间隙的数学模型，并据此讨论了高频群脉冲电化学加工中，电源主脉冲频率与平衡加工间隙的关系。
Data acquisition system discussed in this paper is a part of the measurement system of pulse-to-pulse frequency stability of RF pulse trains.
数据采集系统是射频脉冲序列脉间频率稳定度测试系统中的一部分。
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。
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。
Object's radial velocity effect on object's radar cross section (RCS) outdoor measurement with pulse to pulse frequency shifting radar was researched.
研究了在脉间变频格式目标雷达散射截面(RCS)测试中目标径向速度对测试结果的影响。
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。
This laser can work as behaviors of single pulse, repetition frequency or continuous and also realize the coding of pulse frequency and wavelength tuning.
该激光器可以单脉冲、重频或连续方式输出，并可实现输出脉冲频率的编码及波长调谐。
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。
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。
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。
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。
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。
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。
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。
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。
A pulse frequency modulation (PFM) circuit for retinal prosthesis, which generates electrical pulses with frequency proportional to the intensity of incident light, is presented.
提出了一种用于视网膜修复的脉冲频率调制电路结构。
This paper gives the principle diagrams of the measurement system and some methods of measuring the stability of inter pulse frequency and phase. The measurement results in time...
本文给出测试系统原理图、脉间频率和相位稳定度测量方法以及时域、频域测量结果。
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。
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