[amsat-bb] Re: Motor for Yaesu G5500 Azimuth Rotator?

[Joe Fitzgerald]

On 2/23/2012 3:23 PM, Phil Karn wrote:
> These variable frequency/variable voltage AC motor drives have long been
> common in industry, and they've become the standard in hybrid and newer
> electric cars.

Phil,

Your fans will not be completely happy until your controller runs a 
state-space model of the motor/antenna system, with software that is 
careful to generate acceleration and jerk limited commands such that 
mechanical resonances are not excited.



With tongue firmly in cheek
-Joe KM1P