Tool/software: Code Composer Studio
Hi all,
When I try to tune the motor by InstaSpin lab10a for my customer , i meet a problem about the limit of acceleration
Device : TMS320F28027F + DRV8323RH
Motor parameter : BLDC motor , 30krpm , 360W / 24V / 2A (peak current : 15A)
My customer hope that the motor speed could reach 22.7krpm from 8.8krpm in 150ms
after calculations, i set gMotorVars.MaxAccel_krpmps = ((22700 - 8800) / 0.15) = 92666
however , it still cost 200ms to reach the target speed , not 150ms
I have no ideas why the acceleration could only reach 69500 ((22700 - 8800) / 0.2)
Maybe because it use sine wave control , not six step sqaure wave?
here is the wave ( cost 200ms to reach the target speed , peak current = 12.18A ):
