DC motor with planetary gear reducer

Different uses of DC motors require different performances. Different performances depend on the electromagnetic structure parameters inside the motor. In terms of magnetic parameters, different air gap magnetic field distribution shapes are required. For example, permanent magnet DC motors for pure output drive. Therefore, its performance requires higher output power and efficiency. Therefore, the internal air gap magnetic field distribution of this type of motor should use a flat top wave equal to or slightly greater than 23 pole pitch, so as to provide the largest possible magnetic flux, so that the motor has a larger electromagnetic field. Moment.Another example is for DC motors with low vibration, low noise and low sparks, and low output power and efficiency requirements, the internal air gap magnetic field distribution should be a flat top wave or sine wave with a pole pitch less than 13 to ensure this Applicability of the class motor.To obtain air gap magnetic field waveforms with different distribution shapes is not only related to the reasonable design of the magnet structure and the selection of the magnetic orientation of the magnet, but also the magnetization method, that is, the magnetization technology design. The DC motor is used with a planetary gear reducer.