> 100K / 60 * 2(poles) = electrical rpms. You'll need to run the pwm > well over 100Khz to do this. The lowly dspic33f mc motor series will > struggle to do this, let alone any additional processing.
My thought was to not run PWM but only direct switching at a base frequency of a few kHz and without any sensing of rotor angle. The rotor will run well once it is locked in to the rotating field from the stator. Crude, but it works. > What is the reference to ancient times? The BLDC core design is perceived as a very late principle but the basic design with a constantly magnetized rotor and a three phase excited stator is very old. Of course hall sensors and MOSFET H-bridges came in a little later than 1910. ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
