When the electromagnetic coil of the bearing vibrating disc is in operation, the inclined surface will receive a small up-and-down amplitude due to electromagnetic attraction. Adjusting the operating frequency and gap of the vibrating disc can achieve smooth operation.
The magnetic field generation method of the bearing vibration plate can be divided into permanent magnet type and excitation type. The permanent magnetic field is generated by permanent magnetic steel. Due to the difficulty in manufacturing large-volume magnetic steel, this structure is currently only suitable for small bearing vibration disks.
There are direct and inductive methods for generating the bearing coil drive coil current. The direct method is to directly add the current output from the amplifier to the drive coil. This method is the mainstream of bearing vibration disks. The inductive method is to pass an alternating current into a fixed coil, and then generate an electric current in the driving coil by an inductive method. The drive coil of the inductive bearing vibration plate does not need to lead out the cable, and the structure is simple, but the efficiency of this bearing vibration plate is relatively low. |
Record: ICP.17021542
