The Hall Effect Sensor Is Used As The Rotor Position Sensor For The Bldc Motor

A hall effect sensor is a widely used sensor that provides rotor position feedback to a motor controller.

The hall effect sensor is used as the rotor position sensor for the bldc motor.

On the whole the winding responses according to the magnetic field of the electric motor s permanent magnet thus generating the required torque. Hall effect sensors are the most common method of determining rotor position in bldc motors due to their low cost and ease of use with the permanent magnets of the rotor. A bldc motor with a magnetic sensitive position sensor is installed on a stator assembly to detect changes in the magnetic field generated by permanent magnets and rotors. Let s understand the significance of this sensor in an automotive motor control system.

Hall sensor sequence calibration of bldc motor open example this example calculates the hall sensor sequence with respect to position zero of the rotor in open loop control. A bldc motor control system is a complicated circuit where several components work in tandem to make the motor move in a desired manner. In either case the hall sensors can also be used for accurate position sensing. In the brushed dc motor the commutator realizes commutation of the armature current and seeking of a suitable magnetic field by switching to the armature current.

Efficiency durability and performance are the attributes that concern the engineers the most while designing such a system. The basic principles are hall effect and magnetoresistance effect. Common magnetic sensor hall components or hall integrated circuit magnetic resistor and magnetic diode etc. Some bldc brushless dc motors are equipped with three internal hall effect sensors that provide feedback to external circuits that facilitate precise control of the magnetic coils in the stator.