在旋转电弧信号的频域分析中，其特征谐波的相位反映了焊缝方向与焊接方向的初始夹角。
In frequency analysis of rotating arc signal, the phase of harmonic characteristic reflects the initial Angle between weld direction and seam's direction.
交流(ac)信号产生的电弧通常在电压通过零点时就会自己熄灭。
An arc due to an AC signal usually quenches itself as soon as the voltage level passes through zero.
依据自动控制理论中的小信号理论，小电流TIG焊的电弧具有线性系统的特征。
According to small signal theory of automation theory, arc of low current TIG welding can be considered as a linear system.
在常规弧焊回路中采用了连续波和脉冲敲击式等不同的激励方式获得电弧超声信号。
For arc ultrasonic excitation, both the continuous and the pulse signal was separately applied to the test system including a conventional arc welding circuit.
利用R BF人工神经网络及SVM模型建立电弧声信号与焊接状态的映射模型，从而实现焊接过程状态的模式识别。
RBF Network and SVM model are used to set up the image model of arc sound signal and welding state in order to realize the pattern recognition on-line of the welding conditions.
若能从电弧电压信号中提取出拐点发生时突变的信息，则可望提取到缩颈发生的特征信息。
If this arc voltage saltation information can be extracted, we will get the characteristic information of necking down formation.
根据电弧电压偏差信号及电弧状态，设计了四个控制规则及其控制参数的计算方法。
According to the signals of arc voltage errors and arc state, four control regulations and counting measure of control parameters are designed.
温度传感器监测电弧室内的温度，并提供与感测的温度相关的信号。
A temperature sensor monitors temperatures within the arc chamber and provides a signal related to sensed temperature.
对受激电弧的声发射信号分析表明，从音频到超声频带，电弧声发射与激励频率之间存在着线性响应和非线性响应特征。
The characteristic of linear and nonlinear responses between arc excited ultrasonic emission and excited frequency was realized by the received signal from the acoustic to the ultrasonic spectrum.
由于噪声的存在，会使测试分析系统所采集到的焊接电弧电信号的数据误差增大，数据的精确程度会受到干扰而发生变化。
Welding arc data error of signal collected will be increased by the existence of noise. Accurate degree of data will be interfered and change.
以电弧电压和焊接电流为采集的信号源。
CO2焊接过程的电弧电压、焊接电流信号蕴含了丰富的焊接信息。
The electrical signals of CO2 arc welding contain plenty of welding information.
结果表明： 对称位置接收到的声发射信号的相位差和幅值差可以作为电弧超声焊缝跟踪的依据。
The results show that the phase difference and the amplitude variation can be considered as the criteria of seam tracing.
介绍了国内外在实现变极性电流波形、电弧稳定性、阴极清理机理、小孔信号检测等方面的研究现状。
The status of realization of variable polarity current waveform, arc stability, cathodic cleaning mechanism and keyhole detection is introduced in this paper.
分别针对间谐波数值仿真信号、调幅信号及电弧炉电流作间谐波分析，结果表明：该方法抗噪声能力强、检测精度高，尤其对时变性较强的调幅性间谐波信号具有强适应性。
The simulation results show that the method has high antinoise capability, higher detection accuracy and the better adaptiveness to the amplitude inter harmonics signal of time change especially.
并叙述了电弧传感的信号处理技术的控制系统，用此技术构成的电弧传感器跟踪控制系统可直接用在生产上。
Its signal processing technique and control system are also described. According to the developed technology a prototype machine was built which may be used directly in the production.
通过控制逆变器输入平均电流调节负载功率，简化了电路设计；通过单片机发出高频加低频调制的半桥驱动信号，消除调光过程中的电弧不稳定现象。
A easier and low-cost power control method is proposed in this paper, based on the regulation of the average input current of the inverter.
通过控制逆变器输入平均电流调节负载功率，简化了电路设计；通过单片机发出高频加低频调制的半桥驱动信号，消除调光过程中的电弧不稳定现象。
A easier and low-cost power control method is proposed in this paper, based on the regulation of the average input current of the inverter.
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