ZHCSSV1 august 2023 MCF8316C-Q1
PRODUCTION DATA
Figure 8-3 shows the phase current waveform during motor parameter measurement. Figure 8-4 shows the IPD current waveform during R, L and Ke measurement. Bottom half of Figure 8-4 shows the IPD current waveform during R and L measurement. R is measured during the rising of phase current and L is measured during the falling of phase current. After R and L measurement, motor spins in open loop. Once the speed reaches MPET open loop speed reference [MPET_OPEN_LOOP_SPEED_REF], motor is coasted. BEMF voltage of all three phases are measured and Ke is calculated.