An electromagnetically driven maglev rotating platform

Abstract

The invention discloses an electromagnetic drive type magnetic suspension rotating platform which comprises an electromagnetic suspension structure positioned on an outer ring and an electromagnetic drive structure positioned on an inner ring, wherein a rotating platform casing is arranged outside the electromagnetic suspension structure and the electromagnetic drive structure; the electromagnetic suspension structure comprises an annular electromagnetic suspension iron core; a plurality of teeth are symmetrically arranged on the annular electromagnetic suspension iron core along the circumference; an electromagnetic suspension winding is wound on each tooth; a high-precision air gap sensor is arranged at the clearance between every two teeth; an annular suspension conductor plate is arranged above the annular electromagnetic suspension iron core; the electromagnetic suspension structure comprises an annular electromagnetic drive iron core; three groups of teeth are symmetrically arranged on the outer side of the electromagnetic drive iron core along the circumference; the electromagnetic suspension windings are continuously wound on each group of teeth; each group of electromagnetic drive winding is in a link type structure; an annular permanent magnet rotor is arranged outside the annular electromagnetic drive iron core; and a photoelectric encoder is arranged on a rotating shaft of the rotating platform casing. The assembly difficulty is reduced and the manufacturability is improved.

Description

technical field [0001] The invention belongs to the field of large-scale measurement, in particular to an electromagnetically driven magnetic levitation rotating platform. Background technique [0002] Workspace Measurement Positioning System (wMPS: Workspace Measurement Positioning System, also known as indoorGPS, that is, indoor GPS system) is a large-scale network measurement system developed for the needs of global measurement and control of industrial sites. Its advantage is that it can realize Networked high-precision automatic measurement of large-scale spatial coordinates. The system forms a measurement network through multiple rotating laser emitting devices (transmitting stations), and uses the automatic measurement method of spatial angle intersection based on photoelectric scanning to locate a single receiver. The transmitting station emits an optical signal with angle information when it is working. , providing positioning services for photoelectric receivers i...

AI Technical Summary

Problems solved by technology

[0005] After the wMPS system works for a long time, the wear of the rolling bearing C and the bearing deformation of the coupling B will reduce the rotation stability of the rotating platform of the launching station, which will lead to the reduction of the measurement accuracy of the wMPS system; in addition, this structure is to ensure that the drive motor A The high coaxiality accuracy between the main shaft and the main shaft D of the rotating platform makes the assembly difficult and the manufacturability is poor

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