pulse polarity 中文意思是什麼
pulse polarity
解釋
脈沖極性-
The variable polarity power supply circuit uses two stages full - bridge inverter, the former inverter is regarded as a constant - current source with fast dynamic response, and supplys energy for the second one, and the latter one is to produce variable polarity current excellently, and low - frequency pulse current by variable polarity power supply is used to reduce input energy and control the shape of weld bead while welding. a series of high - frequency pulse current is superposed on direct - current - electrode - negative ( dcen ) current through the high - frequency pulse power supply, which is used to compress the arc and improve process of crystallization
其中變極性電源採用二次全橋逆變結構，一次逆變提供快速的響應速率並給二次逆變提供能量，二次逆變提供良好的變極性性能，使輸出能量最優化，並用其低頻電流特性減小電弧線能量，控制焊縫成形;高頻脈沖電源提供的高頻電流疊加在反極性電流dcen上，利用電流的高頻特性壓縮電弧，改善焊縫金屬結晶過程。 -
In this thesis, a high - frequency variable polarity arc welding power supply was investigated, which consisted of two independent power sources, the variable polarity power supply and the high - frequency pulse one, having advantages both of them
本文針對鋁合金焊接研製了一種新型電源，所研究的高頻變極性弧焊電源採用雙電源結構，由變極性電源和高頻脈沖電源組成，綜合了兩者的優點。 -
On the basis of the theory and the experiment, the paper has synthetically analyzed the anti - interference characteristics of the hardware method ( differential balance ) and software method ( digital filter ). the paper has presented that these two methods have some disadvantages respectively. based on this fact, a new method has been presented. hardware method can be use to restrain periodical interference, and software method can be use to discriminate pulse polarity
從理論和試驗兩方面，綜合分析了硬體措施（差動平衡法）和軟體措施（數字濾波法）抑制干擾（包括周期性和脈沖性干擾）的方法和特點，指出了兩種方法各自存在的缺點，在此基礎上提出了用硬體方法抗周期性干擾，用軟體抗脈沖性干擾的新方法，並通過試驗證明，該方法可以抑制周期性干擾，有效地鑒別出外部干擾信號和內部局部放電信號。 -
A system for the weld power source was established with digital signal processor ( dsp ), and variable polarity power supply output, high - frequency pulse current, protection and process control were fulfilled with the software all, and modulate low frequency pulse current by means of amplitude modulation, through which it could also control the shape of weld seam like the low frequency pulse current welding
在模擬控制器基礎上引入了dsp數字控制技術，用軟體編程實現了電源的變極性輸出、高頻脈沖電流的疊加及保護和電源的時序控制，使之能夠在大尺度上調制出低頻脈沖，控制焊縫成形。 -
The main advantage of this pdm converter is that one half - cycle of the high - frequency voltage becomes the basic unit of synthesis of the low - frequency signals. the area difference under the reference signal and synthesized signal and the next pulse with the polarity will reduce thi s difference
Pdm技術的特點是將高頻交流脈沖信號的一個半周期作為合成低頻信號的基本單元，通過比較同時刻參考波形和輸出波形的面積差，使得兩個曲線包圍的面積可以基本維持平衡。
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