High-precise uniaxial magnetic-levitation revolving table

Abstract

The related high-precise single-axis magnetic levitation turntable comprises: a moment motor, a lower protective bearing, a lower / upper radial / axial integrated displacement sensor, a lower / upper radial magnetic levitation, an angular position coder, and a work platform. Wherein, it uses radial / axial magnetic levitation bearing to realize non-mechanical contact stable suspension between stator and rotator. This invention reduces friction moment and total volume greatly, and improves control precision and system security.

Description

Technical field [0001] The invention relates to a high-precision single-axis magnetic levitation turntable, which can be used for dynamic simulation of spacecraft and high-precision testing of the performance of components such as spacecraft actuators, and can also be used for calibration of inertial navigation systems and establishment of corresponding error models. Background technique [0002] Both the spacecraft dynamics simulation turntable and the spacecraft actuator test turntable (hereinafter collectively referred to as the turntable) are high-precision equipment, requiring small frictional torque and high test accuracy. Its simulation and test accuracy directly affect the control accuracy and stability of the spacecraft's actuators on the attitude of the spacecraft. At present, the turntable is generally supported by air static pressure bearings and mechanical bearings. Since the structural design of the air static pressure bearings is very complicated, the processi...

AI Technical Summary

Problems solved by technology

At present, the turntable is generally supported by air static pressure bearings and mechanical bearings. Since the structural design of the air static pressure bearings is very complicated, the processing and manufacturing precision requirements are very high, and a set of air source devices (including air compressors, air storage tanks, Dryer, filter, etc.), which leads to the need for professionals to maintain the aerostatic bearing, and because of the high-pressure gas, there are potential safety hazards, large vibration and noise, large space occupation, high maintenance costs, and difficult transportation. For the turntable supported by mechanical bearings, there are disadvantages such as large mechanical friction torque, serious nonlinearity, complicated control system, and low control accuracy.

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