The functions of the 200 series DC brushless motor:
The main function is to receive the start, stop, and brake signals of the motor to control the start, stop, and brake of the motor, receive position sensor signals and forward and reverse rotation signals to control the on/off of various power tubes in the inverter bridge, generate continuous torque, receive speed commands and speed feedback signals to control and adjust the speed, provide protection and display, etc.
DC brushless motors have response, large starting torque, and the ability to provide rated torque from zero speed to rated speed. However, the advantages of DC motors are also their disadvantages, because in order to generate constant torque under rated load, the armature magnetic field and rotor magnetic field must be maintained at a constant 90 ° angle, which requires the use of carbon brushes and rectifiers.
Carbon brushes and rectifiers generate sparks and carbon powder when the motor rotates, which not only causes component damage, but also limits their usage. AC motors do not have carbon brushes or rectifiers, are maintenance free, sturdy, and widely used. However, to achieve performance equivalent to DC motors in terms of characteristics, complex control technology is required. With the rapid development of semiconductors today, the switching frequency of power components has increased significantly, improving the performance of drive motors.