An ironless disc motor for drones

Abstract

The invention discloses an iron-core-free disc type motor for an unmanned aerial vehicle. The iron-core-free disc type motor for the unmanned aerial vehicle comprises a machine seat disc, a stator armature disc, an end cover disc and a plurality of permanent magnets, wherein the machine seat disc is connected with a fixing assembly of the unmanned aerial vehicle; the stator armature disc is coaxially fixed on the machine seat disc; the outer side of the end cover disc is fixedly connected with an assembly to be driven of the unmanned aerial vehicle; the permanent magnets are arranged in a wayof being right aligned with the stator armature disc; the permanent magnets are pasted on the inner side of the end cover disc at uniform intervals in the circumferential direction of the end cover disc; poles N and poles S of the permanent magnets are sequentially in alternate and uniform distribution; the permanent magnets are permanent magnets with nonuniform thickness; and the permanent magnets are magnetized in the axial direction of the end cover disc. The iron-core-free disc type motor for the unmanned aerial vehicle has the beneficial effects that the permanent magnets with nonuniformthickness are used; the harmonic wave phenomenon of the iron-core-free disc type motor is greatly reduced; further, the noise generated during the driving is reduced; and the operation of the motor ismore reliable.

Description

technical field [0001] The invention relates to an ironless disc motor, in particular to an ironless disc motor for an unmanned aerial vehicle. Background technique [0002] The operation of the UAV requires an efficient drive motor to drive the rotor to rotate at high speed, which has strict requirements on the weight and axial length of the drive motor. At present, radial flux motors are often used as the main drive motors for UAVs. Although they can meet the performance requirements, they are heavy in weight and long in axial dimension, which are not suitable for occasions that require high weight and volume, which severely limits UAVs. The development of the field; the ordinary disc motor can meet the requirement of short axial dimension, but its efficiency is low, the magnetic flux leakage is serious, and the performance is low; the ordinary coreless disc motor has a small mass and reasonable axial dimension, but its The harmonic phenomenon is serious, the noise is lar...

AI Technical Summary

Problems solved by technology

At present, radial flux motors are often used as the main drive motors for UAVs. Although they can meet the performance requirements, they are heavy in weight and long in axial dimension, which are not suitable for occasions that require high weight and volume, which severely limits UAVs. The development of the field; the ordinary disc motor can meet the requirement of short axial dimension, but its efficiency is low, the magnetic flux leakage is serious, and the performance is low; the ordinary coreless disc motor has a small mass and reasonable axial dimension, but its The harmonic phenomenon is serious, the noise is large, and the utilization rate of magnetic energy is not high, and the efficiency is low. It is not suitable for the field of drones that have high performance requirements for drive motors.

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