Brushless DC motor control is categorized into those? How to understand?

The control methods of brushless DC motor (BLDC) are mainly divided into two kinds: square wave control and sine wave control.

Square wave control: Square wave control mainly uses the six-step commutation method, i.e., by changing the sequence of energized phases, the magnetic field of the stator is rotated to generate driving force. Brushless DC motors with square wave control have the advantages of simple structure, low cost and reliable operation, and are widely used in various industrial fields.

Sine wave control: Sine wave control mainly uses PWM (pulse width modulation) to make the stator current change according to the law of sinusoidal wave to generate a circular magnetic field, so as to make the motor have higher efficiency and better performance. Brushless DC motors with sinusoidal control have the advantages of smooth operation, low noise, high efficiency, etc., and are widely used in home appliances, automobiles and other fields.

In addition, the control mode of brushless DC motor can be divided into the following types according to the specific realization:

Separate control: separate control is to separate the controller of the motor and the motor body, and the controller controls the motor through the line. This type of control has the advantages of simple structure and easy maintenance, and is widely used in various industrial fields.

Integrated control: integrated control is the motor controller and motor body integrated together to form a whole. This type of control has the advantages of small size, light weight, high reliability, and is widely used in home appliances, automobiles and other fields.

Intelligent control: Intelligent control is to detect and control the motor through sensors and other devices to achieve self-regulation and optimization of the motor. Brushless DC motors with intelligent control have higher performance and better adaptability, and are widely used in various high-end fields.