Transcription of BLDC motor control with Hall sensor based on FRDM-KE02Z
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BLDC motor control with Hall sensor based on FRDM-KE02Z
1 IntroductionThe speed control circuits of DC motors are simple and easyto use, and hence are very popular in motor speed controlsystems. However, due to the brushes, DC motors suffer froma lower reliability. The brushless DC (BLDC) motor is alsoreferred as an electronically commuted motor . There are nobrushes on the rotor and the commutation is performedelectronically at certain rotor a DC motor with a BLDC motor places higherdemands on a control algorithm and a control circuit. First, the BLDC motor is usually a three-phase system;so, it has to be powered by a three-phase power supply. Second, the rotor position must be known at certainangles in order to align the applied most common way to control a BLDC motor is to useHall sensors to determine the rotor position.
Figure 4. BLDC motor structure Figure 5. Stator winding connection of a three-phase BLDC motor The stator windings can generate the magnetic field when powered, which will attract or …
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