Introduction was made to the method of sine pulse width modulation (SPWM) wave generated by table searching, which is based on area equivalence principle.

介绍了一种基于面积等效原理，采用查表法产生正弦脉宽调制(SPWM)波的方法。

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This paper gets the frequency stability of a sine wave using a digital method.

本文实现了利用数字方法计算正弦波的频率稳定度。

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A new control method of multiunit inverter is described, which determines the triggering pulse for each unit to obtain the sine wave output through multiple-phase shifting superimposition principle.

研究了多重化逆变器的一种控制方法，采用逆推的方法确定各单元的触发脉冲，通过多重移相叠加原理得到正弦波输出。

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