Adamlivi
10 mW
Worked!! You are a Rock Star Teklektik. Thanks!!!!
It presently works like this:lightrush said:However now the power level that activates the motor is higher - 86W. If the scale factor is larger 2 or more, the starting power of the motor is 86 * 2 or 86 * 3W which is quite the spike for starting power.
Is there any way to make the motor start at HWt - 85W?
I can't duplicate this on the bench with a cursory test -- not sure what is going on there. Anyhow, I'll write a ticket on this and we'll look into it.Adamlivi said:I have a new Sempu...
I also see higher input reading spikes with essentially no force applies, only crank rotation. Tends to occur after having applied strong crank force.
Yep.lightrush said:So it sounds like it already operates the way I -want- it to.
If you apply 86W of power, your assist with an 85W Start setting and 2x scale factor will be (86HW-85HW)*2W/HW = 2W. As you can see, the start power is affected by the scaling factor. So, at 2x scaling you need 170HW to overcome the Start level.
lightrush said:If this calculation and logic is correct, then that could explain the power spikes above the start threshold with the Sempu.
No. It was discussed but there seemed too few cases where it proved truly useful.lightrush said:Is there a way to adjust the 50RPM value used to calculate PAS human watts under 50RPM?
Yes - that was an error that arose from refactoring the sample calculation which shows 170W due to both (rider effort + scaling) not rider effort alone. My Bad.lightrush said:Sorry I didn't understand what the last sentence means. Is start level the start threshold (85W)? If so how does scale factor affect that?If you apply 86W of power, your assist with an 85W Start setting and 2x scale factor will be (86HW-85HW)*2W/HW = 2W. As you can see, the start power is affected by the scaling factor. So, at 2x scaling you need 170HW to overcome the Start level.
Ok, good. That's not entirely unexpected (whew...)lightrush said:Yes, sudden persistent power application.
Yes. Following your calculations above to derive the raw torque and then applying the baseline 50rpm instead of the actual 20rpm, this is entirely possible.lightrush said:So are calculations where cadence is 20RPM, start threshold is 85, scale factor is 3 and human watts is 86 can result in persistent 300W+ assist, not spike, correct?
Ahh - okay - steady state not transitioning - well you could try two things:lightrush said:The use case when this produces an artifact for me is when I'm moving slowly 5-15 kph, barely spinning the cranks and not trying to accelerate. In that state I'd expect little to no assist and instead I'm getting quite a bit.