该结构利用积分面积相等的原则确定开关角，通过串级叠加的方法得到标准正弦波输出。
In the structure, the (equal) integration area method was used to determine the control switch Angle, and the sinusoidal voltage wave was obtained by means of the concatenate superposition.
该系统采用8031单片机进行控制，根据控制命令可发出不同时间间隔、不同时间长度、不同频率的标准正弦波信号。
The system is controlled by chip microprocessor 8031 and can transmit standard sinusoidal waves with various frequencies and arbitrary time intervals according to various requirements.
介绍了一种多级H桥并联变换器，通过一定的控制方式使每个H桥变压器副边产生的波形叠加成18阶梯波，经滤波后可得到比较标准的正弦波。
The paper introduces a multi-level H-bridge converter, which produces 18-step waveform according to required control method. The standard sine waveform can be gotten after passing through the filter.
该校准仪是用于校准各种电子电压表基本误差的专用标准仪器，具有定点频率下正弦波信号输出的标准电压源。
This normalizing device is a standard instrument used to calibrate the intrinsic errors of the various kinds of electronic voltmeters.
该校准仪是用于校准各种电子电压表基本误差的专用标准仪器，具有定点频率下正弦波信号输出的标准电压源。
This normalizing device is a standard instrument used to calibrate the intrinsic errors of the various kinds of electronic voltmeters.
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