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58 points breve | 2 comments | | HN request time: 0.001s | source
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pinkmuffinere ◴[] No.45676350[source]
> The motor’s performance on the dyno has exceeded even our most optimistic simulations

Not to take away from the exciting achievement, but I always found comments like this kindof unusual. Really, it exceeded even your _most optimistic_ simulations? If the high end of your simulated performance was below what you actually measured, I am worried that your simulation is seriously neglecting something. I used to work in decent depth with three phase bldc motors, so I feel I can say with some authority that these things _can_ be simulated, and while real world data is hard to exactly predict, getting something outside of the predicted range would generally be interpreted as a sign that your simulation isn't so good. But maybe this is just marketing-speak, and their simulations are actually totally fine.

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1. dmitrygr ◴[] No.45676422[source]
+1

I suspect that the marketing guy's eyes glazed over when the engineers tried to explain confidence intervals to him. He demanded a simple figure. They gave him the median projected value to make him go away. The tested value was above median projection and thus you get this wordspew.

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2. yunnpp ◴[] No.45677076[source]
> Make him go away

Spoken like a true engineer.