Quote:
Originally Posted by iambujo
So we just rechecked wheel speed, and it maxes out at about 3500 RPMs, or 12,991 RPMs motor speed. We measured the voltage across a .01 ohm power resistor and it was about 210 mv. So at max speed it looks like we are drawing about 21 Amps. In-rush current when the wheel starts up peaks out at about 50 Amps for a brief moment.
Now we need to check the motor voltage, maybe that is where the flaw in the applied math is. SW is sending a "1" to the Jaguar, but I guess there is more voltage drop that I expected.
Thanks again for the insight. Everything is working ok, at this point it's just a study of the real world numbers we are collecting compared to the expected data based on the motor curves.
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Ok here is a good reason it is good to compare real world measurements to the expected/theoretical numbers. After scratching our heads we asked SW one last time if they were sending '1' to the Jaguar. They said 'Yes. Wait - It's a Jaguar? We have it coded as a Victor'. Opps! Since Jaguars have a larger band of PWM Full/Reverse signal input, that means they really were not sending it a '1'. They changed to Jaguar and now it runs a good amount faster at hight input values and is much closer to the curve.
Thanks for sticking with me on this one Ether!
