推导了非同步型脉冲间隔与宽度双重调制(P I W M)的频谱及其特点。
The frequency spectrum and characteristics of pulse interval and width modulation (PIWM) are derived in detail.
因此，若将重复周期参差调制方式融合到频率编码信号中，可使信号具备时-频调制双重随机性。
So, the modulation of irregular pulse repetition interval may be employed in FCP that the randomization of signal modulation would be obtained in both time and frequency domains.
提出了一种新型的双重单端正激式弧焊逆变电源，采用IGBT为开关器件，引入了电流型脉宽调制控制器。
A new double single-ended forward arc welding power inverter with IGBT as power device and current PWM controller is introduced in this paper.
提出了一种新型的双重单端正激式弧焊逆变电源，采用IGBT为开关器件，引入了电流型脉宽调制控制器。
A new double single-ended forward arc welding power inverter with IGBT as power device and current PWM controller is introduced in this paper.
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