Brushless dc motor without a position sensor

摘要: A brushless DC motor detects a positional relationship between the rotor and stator windings in short period of time when starting immediately switches mode from phase coincidence at to normal position detecting performed by counting output pulses response rotational speed rotor. The an extremely high accuracy independently magnitude load even has already been subjected application such starting. is always driven efficiency applying correction process so as cause each voltages respectively induced coincide with corresponding one driving currents outputted being rotated normally.