The waveform generator is composed by DSP and quadrature digital upconverter (QDU). DSP is used as main controller to decide the modulation mode and output waveform of QDU.
波形产生器主要由dsp和数字上变频器构成，DS P作为主控制器设定数字上变频器的调制方式和输出波形。
This paper introduces a microprocessor controlled PWM real time controller used in AC-DC-AC electric locomotive. A real-time forming method of multi-mode PWM waveform is described.
介绍了一种用十六位单片机实现的用于控制交-直-交电力机车道变器的PWM实时控制器，论述了PWM波形的实时生成方法。
In the environment of high-performance drives, the PWM controller can't produce a fine PWM waveform according to the future dynamic behavior, due to the lag of PI regulator.
在无刷直流电动机高性能速度跟踪系统中，由于PI控制的滞后性，无法根据未来动态行为产生较为理想的PWM波形。
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