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Instaspin BLDC

Hi all,

I'm testing BLDC Motor with my own board and modified firmware from "Instaspin BLDC GUI Project".

The specification of BLDC Motor is as following,

 - Rated Voltage / Power / RPM / # poles : 12V / 50Watt / 4000RPM / 8 poles

The speed controller is work well at no load condition ( the maximum rpm is 4,700RPM ), but at full load condition the regulated speed is 3,500RPM.

When I use the "DRV8301-HC_EVM RevC" the regulated speed is 3,500RPM at full load condition, but the other sensorless controller can regulate 3,700RPM.

In this case, what's the tuning points?