A magnetic levitation element used in the centering device of the output shaft of the gyro inertial instrument

Abstract

The invention discloses a magnetic suspension element for a gyroscope inertial instrument output shaft centering device, and belongs to the field of small and special electric machines. The magnetic suspension element comprises a radial magnetic suspension and an axial magnetic suspension, wherein the radial magnetic suspension comprises a radial stator magnetic core, a radial stator winding and a radial rotor magnetic ring; the axial magnetic suspension comprises an axial stator magnetic core, an axial stator winding and an axial rotor magnetic sheet; the radial magnetic suspension made of a magnetic material adopts a soft magnetic alloy band material, and the axial magnetic suspension adopts a soft magnetic ferrite material formed by a hot isostatic pressing technology. According to the magnetic suspension element, by different excitation, the actual working position of the instrument can be accurately judged, and acting force can be applied to a floater assembly, so that the position of the floater assembly can be precisely controlled. The magnetic suspension element can be applied to a gyroscope instrument; the functions of a displacement sensor and a force controller are combined, so that the space and the weight are reduced, and the electrical precision and the reliability are improved.

Description

technical field [0001] The invention relates to a magnetic levitation element used for a centering device of an output shaft of a gyro inertial instrument, belonging to the field of micro and special motors. Background technique [0002] Magnetic levitation is a centering device on the output shaft of the gyro inertial device. It not only eliminates the mechanical contact friction on the output shaft, but also improves the centering accuracy of the output shaft. [0003] At present, the common ferrite core structure commonly used in domestic magnetic suspension is not dense enough. Although this material meets the magnetic performance requirements of the sensor and control two-in-one function for the magnetic path, its main disadvantage is that it is relatively brittle and difficult to process. Moreover, its main structure is processed by molds, and the symmetry of the mechanical structure is poor, which makes it difficult to ensure the symmetry of the electrical output. ...

AI Technical Summary

Problems solved by technology

[0003] At present, the common ferrite core structure commonly used in domestic magnetic suspension is not dense enough. Although this material meets the magnetic performance requirements of the sensor and control two-in-one function for the magnetic path, its main disadvantage is that it is relatively brittle and difficult to process.

Moreover, its main structure is processed by molds, and the symmetry of the mechanical structure is poor, which makes it difficult to guarantee the symmetry of the electrical output.

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