“unipolar pulse width modulation”的概念、定义、翻译、参考文献-科学参考

单词	unipolar pulse width modulation
释义	unipolar pulse width modulation Encyclopedia 工学电力电子控制技术释 unipolar pulse width modulation单极性脉宽调制在调制信号的半个周期内，载波只在正极性或负极性一种极性范围内变化，所得到的脉宽调制（pulse-width modulation;PWM）波形也只在单个极性范围变化的控制方式。
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