Motor Hall Sensor
The Motor Hall Sensor is commonly used in BLDC motors and offers a low-cost alternative to incremental encoders and resolvers. Hall sensors can be used to determine the motor’s electrical angle.
The low resolution of the digital information (60 degrees, or an angle of ±30 degrees) is compensated through high-speed linear interpolation and digital filtering.
A software-programmable lookup table (LUT) is used to set the angles corresponding to the commutation points.
The LUT allows correction of Hall-sensor positioning errors inside the windings.
The IP is capable of processing a double set of Hall sensors for dual-winding motors (6-phase motors). With six sensors, the effective resolution increases.