At 12.17 2012.09.03, you wrote:
>Joe, decide on power or torque limiting (these are 2 different things), th=
en
>implement it. It is a closed loop so you just do Pwmcontrol =3D (limiting)=
?
>Demand: Demand - LimitingSignal; Cycle by cycle current limiting is anothe=
r
>thing, and is actually a good idea, but that requires that you see the
>individual current pulses. It may be, that individual pulse current limiti=
ng is
>all you really want, and that is best done in hardware alone imho.

By the way, if I'm not mistaken, DC brushed motors are "constant power over=
 the
RPM range" (at an approximation), or in other words "exponentially decaying=
 torque".

Well, what kind of electric motors are instead "constant torque over the RP=
M range"?
(of course at an approximation even here, as such an engine if it existed w=
ould have
infinite power at infinite RPM if let run freely ;) ).

Thanks,
Mario

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