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dlaing · 07-23-2009, 11:10 AM

Does the rate of decay of the motor current depend on rpm? We could experiment, (well you could) drive a set speed, then turn off the pwm while having the current sensor infinitely loop, logging the results. Repeat for different speeds.
We know the rate of rise of the motor current does depend on rpm. If we have enough time to run 2 adc conversions while the pwm is on, then you can just compare the two.
That's a much easier experiment to run. Try always having 2 sequential current reads, and see if the decay depends on speed.

07-23-2009, 11:10 AM	#2072 (permalink)
dlaing EcoModding Lurker Join Date: Aug 2008 Location: Calgary, AB Posts: 21 Corolla bandit - '05 Toyota Corolla CE Thanks: 1 Thanked 1 Time in 1 Post	Does the rate of decay of the motor current depend on rpm? We could experiment, (well you could) drive a set speed, then turn off the pwm while having the current sensor infinitely loop, logging the results. Repeat for different speeds. We know the rate of rise of the motor current does depend on rpm. If we have enough time to run 2 adc conversions while the pwm is on, then you can just compare the two. That's a much easier experiment to run. Try always having 2 sequential current reads, and see if the decay depends on speed. Last edited by dlaing; 07-23-2009 at 11:18 AM..