Handicap E-Tricycle manufacturers share As one of the common types of electric vehicles, DC motors have the advantages of good speed regulation performance, convenient control and high operating efficiency. They have played an important role in the field of variable speed drives. However, due to the commutation using the brush mechanical method, there are inevitably fatal shortcomings, such as noise, sparks, radio interference and short life due to mechanical friction, which greatly limits its scope of application.With the development of electronic sensor technology, the use of electronic commutation instead of mechanical commutation, coupled with the development of high-performance permanent magnet materials, permanent magnet brushless DC motors have emerged one after another, making DC speed control regain new vitality. It maintains the excellent control characteristics of the brushed DC motor and overcomes its shortcomings. It has the advantages of wide speed range, smooth speed performance, large starting torque, easy control, reliable operation, high efficiency, maintenance-free, and long life. Compared with the permanent magnet brushed DC motor, it adopts a "turning inside out" structure, that is, the armature winding is placed on the stator, so that the electric loss of the electric car motor is easily dissipated through the casing and convenient Temperature detection and control, and the rotor uses permanent magnet excitation, no electric excitation winding, that is, the method of passing the brush through the rotor without electricity, and the loss and heat are very small.The polarity of the rotor permanent magnet is detected by a position sensor to control the energization form of the stator armature winding, which is a drive control motor with an electromechanical integration structure.Through the above introduction, EEC Electric Bike Manufacturers hopes that you can simply refer to the content of this article in future use.