The principle and function of hall device in motor are introduced

Hall device is a kind of magnetic sensor.They can be used to detect magnetic fields and their variations and can be used in a variety of magnetic field-related applications.Hall device is based on hall effect.Hall devices have many advantages, their structure is strong, small size, light weight, long life, easy installation, low power consumption, high frequency (up to 1MHZ), vibration resistance, not afraid of dust, oil, water vapor and salt fog pollution or corrosion.

Principle:

Hall type is used to judge the current motor motion state through the hall type of the motor, and then the controller controls the three-phase output of the controller according to the signal collected by hall to power the motor and keep the motor working normally.

No hall type is the motor without hall sensor, the controller through the current acquisition to determine the motor's current motion state, and then control the output of the controller to power the motor, let the motor compete for production work.

Function:

Hall type motor and controller are stable in use, high torque at startup, no noise.

Due to technical problems, the holeless motor and controller are not very stable at present, especially in the initial stage, with poor stability and insufficient power.

Hall sensors are used in a number of places in the e-bike, such as the speed regulating knob, brake handle, and brushless motor medium.

The electric vehicle speed regulation turns: the speed regulation turns the name suggests is the electric vehicle speed regulation component, this is one kind of linear speed regulation component, the style is very many but the working principle is same.It is generally located on the right of the electric vehicle, which is the right hand when riding, the electric vehicle to turn the rotation Angle range between 0 and 30 degrees.

Brake handle of electric vehicle: the signal of turn handle is the driving signal of electric vehicle motor rotation, brake signal is the brake signal of motor stop rotation.Electric vehicle standards require electric vehicles in the brake brake, the controller should be able to automatically cut off the power supply to the motor.Therefore, there should be a brake position sensing element on the brake handle of the electric vehicle. When the brake handle is pinched, the brake signal will be sent to the controller. After the controller receives the brake signal, it will immediately stop the power supply to the motor.

Brushless motor: the current electric mains generally adopt the following three types of motors: high efficiency and low speed rare earth permanent magnet dc brushless motor, high efficiency and low speed permanent magnet dc brushless motor, and high efficiency and high speed rare earth permanent magnet dc brushless motor.The current in the windings of the dc motor is constantly changed to make the rotor rotate in one direction during the rotation process.The brushless motor is commuted by means of mechanical contact between the brush and the commutator.The brushless motor detects the real-time running position of the windings through the hall-sensor, processes the collected signals through the microprocessor or special chip, and controls the motor windings with the corresponding driving circuit in real time.Since the commutation of the brushless motor is carried out through the sensor and related circuits, the motor has no mechanical contact and wear between the brush and the commutator, and does not need to frequently change the brush and other vulnerable devices, which can effectively improve the service life of the motor and reduce maintenance costs.