SPRUHJ1I January 2013 – October 2021 TMS320F2802-Q1 , TMS320F28026-Q1 , TMS320F28026F , TMS320F28027-Q1 , TMS320F28027F , TMS320F28027F-Q1 , TMS320F28052-Q1 , TMS320F28052F , TMS320F28052F-Q1 , TMS320F28052M , TMS320F28052M-Q1 , TMS320F28054-Q1 , TMS320F28054F , TMS320F28054F-Q1 , TMS320F28054M , TMS320F28054M-Q1 , TMS320F2806-Q1 , TMS320F28062-Q1 , TMS320F28062F , TMS320F28062F-Q1 , TMS320F28068F , TMS320F28068M , TMS320F28069-Q1 , TMS320F28069F , TMS320F28069F-Q1 , TMS320F28069M , TMS320F28069M-Q1
InstaSPIN-FOC includes another resistance recalibration, which is done before the motor is spun, known as Rs Offline. Rs Offline requires the motor to be at standstill, injecting a DC current into Id. On the other hand, Rs Online requires the motor to be spinning in order to recalibrate the resistance, injecting an AC current into Id.
Both Rs Offline and Rs Online are critical portions of InstaSPIN-FOC to provide the best low speed performance. In a typical application, Figure 16-7 shows the use of both Rs offline and Rs online.