Abstract

Applying EDA technology, the dc speed governing system was designed, which produces digital signal of PWM waveform. These produced signals can be directly added to the dc machines, by changing the duty ratio of impulse wave, to realize speed regulation, not needing D/A transformation. With a high reliability and strong antijamming capability, this design is used widely. The simulation results of MAX + plus II software indicates that the desired effect is achieved for this design.

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