yeah, but...there's just no replacement for hardware level PWM, when we're talking about high carrier frequencies...you could use Pd to control the on/off switches of your transistor bridge when the carrier freq is low (say ~1-2 kHz), but often you want to get a carrier frequency in the neighborhood of say, 200 kHz... No one in the right mind would use Pd for synchronous/asynchronous motor control in the first place. am I wrong?
Chuck