Permanent-magnet synchronous magnetic suspension planar motor

Abstract

The invention provides a permanent-magnet synchronous magnetic suspension planar motor, which comprises a rotor and a stator, wherein the stator employs a specific two-dimensional permanent magnet array; a first main permanent magnet and a second main permanent magnet in the two-dimensional permanent magnet array are staggered along an X direction and an Y direction to form a planar array; four second secondary permanent magnets are arranged at the periphery of the first main permanent magnet; four third secondary permanent magnets are arranged at the periphery of the second main permanent magnet; a first secondary permanent magnet is arranged between the second secondary permanent magnets and the third secondary permanent magnets; and the side surfaces of each permanent magnet and the side surfaces of adjacent permanent magnets thereof are jointed with each other; all the included angles between the magnetization directions of any two adjacent permanent magnets in the two-dimensionalpermanent magnet array are 45 DEG. By the specific two-dimensional permanent magnet array, the magnetic field intensity of the motor is high, the sinusoidal characteristic is good, and the deficiencyof the existing permanent-magnet synchronous magnetic suspension planar motor that high precision, high response and high efficiency cannot be taken into account together is compensated. The permanent-magnet synchronous magnetic suspension planar motor provided by the invention is a planar motor with better performance.

Description

technical field [0001] The invention belongs to the field of precision motion equipment, in particular to a permanent magnet synchronous magnetic levitation planar motor using a specific two-dimensional permanent magnet array. Background technique [0002] With the development of science and technology and industry, devices capable of plane motion and precise positioning are being increasingly applied to industrial equipment. The traditional planar motion device is vertically superimposed by two or more sets of linear drive units in structure, and the planar motion is realized through linkage in control. For this type of planar motion device, the linear drive unit at the bottom not only has to bear the drive in the predetermined direction, but also needs to bear the mass of the upper linear drive unit, thus causing the motion device to move in multiple directions (such as traditional XY work) The serious imbalance of motion inertia in the X direction and Y direction of the ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a permanent magnet synchronous magnetic levitation planar motor using a specific two-dimensional permanent magnet array to solve the problem that the high precision, high response and high efficiency of the permanent magnet synchronous magnetic levitation planar motor cannot be balanced in the prior art

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