ST STM32 User Manual page 4

List of figures UM2124
List of figures
Figure 1: BLDC motor control sequence .................................................................................................... 8
Figure 2: six-step phase voltage with BEMF sequence and PWM modulation .......................................... 8
Figure 3: Current mode control ................................................................................................................. 10
Figure 4: ETR function on current mode control ....................................................................................... 10
Figure 5: Voltage mode control ................................................................................................................. 11
Figure 6: Sinusoidal construction .............................................................................................................. 12
Figure 7: Trapezoidal construction ........................................................................................................... 13
Figure 8: High and low frequency timer signals ........................................................................................ 14
Figure 9: BEMF signal and zero crossing detection ................................................................................. 15
Figure 10: Demagnetization time .............................................................................................................. 15
Figure 11: Demagnetization: delay time (N=3) ......................................................................................... 16
Figure 12: Demagnetization: delay time (N=2) ......................................................................................... 16
Figure 13: BEMF measuring during the OFF-time and ADC sampling .................................................... 17
Figure 14: Alignment and ramp-up generation ......................................................................................... 18
Figure 15: Project workspace on IAR IDE ................................................................................................ 19
Figure 16: X-CUBE-SPN7 software architecture ...................................................................................... 20
Figure 17: X-CUBE-SPN8 software architecture ...................................................................................... 20
Figure 18: X-CUBE-SPN8 folder contents ................................................................................................ 21
Figure 19: six-step library version ............................................................................................................. 22
Figure 20: Acceleration rate and number of steps .................................................................................... 25
Figure 21: six-step firmware library component overview ........................................................................ 30
Figure 22: six-step main firmware routines: low priority task .................................................................... 30
Figure 23: six-step main firmware routines: medium priority task ............................................................ 31
Figure 24: six-step main firmware routines: high priority task .................................................................. 31
Figure 25: New motor running .................................................................................................................. 33
Figure 26: Motor successful initialization .................................................................................................. 34
Figure 27: Motor successful initialization zoom ........................................................................................ 34
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