Quote:
Originally Posted by dcbrown
gryo w/drift compensation and programmable op-amp gain (similar to those used on model helicopters like ICG400).
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I'm interested to better understand what features you are interested in here. I found very little detailed documentation about what this does technically. What op amp are you referring to?
Quote:
Originally Posted by dcbrown
sensorless motor feedback using back emf measurement sync'd with pwm cycle (i.e. automatically interrupt pwm setting, substituting neutral for a couple of cycles, but sync'd with start of pulse train). programmable op-amp gain would be a bonus. Should be available on any pwm output, but would require A/D channel to get the measurement. Would need sync signal on when to acquire analog sample.
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This sounds like a request that would need to be implemented in the motor controller directly. For a controller like the Victor, there is a relatively long time that the H-Bridge will be driven after the incoming servo PWM signal stops. The Servo PWM is also not necessarily synchronized with the H-Bridge PWM. I'm not sure what op-amp it is that you keep referring to.
I'm interested in following this up. Please give more information.
Thanks,
-Joe