At present, DC brushless blowers mostly use brushless DC motors, which greatly simplify the structure of brushless DC motors by eliminating the collector ring and brushes for excitation. It not only improves the technical performance of the motor, but also greatly improves the mechanical reliability and life of the motor. Not only that, it also has excellent control performance compared with other motors. This is because the torque constant, torque inertia ratio, and power density of the motor have been greatly improved due to the high performance of permanent magnet materials.

Through reasonable design, the inertia and electromechanical time constant can be greatly reduced and greatly improved as the main index of servo control per