A stiffness testing device and testing method for a magnetic suspension bearing

Abstract

Disclosed is a magnetic bearing stiffness testing device and method. The magnetic bearing stiffness testing device comprises a base, a two-dimensional motion platform, a force sensor support, a force sensor, a magnetic bearing rotor module, a magnetic bearing rotor mounting rack, a magnetic bearing stator module and a magnetic bearing stator mounting rack, wherein the force sensor can achieve zero adjustment through the force sensor support; through the two-dimensional motion platform, a rotor and a stator can generate relative displacement; a current source can set current inside a stator coil, and the force sensor can obtain the stress conditions between the stator and the rotor; according to the relation between stress and displacement as well as the relation between stress and current, the current stiffness and the displacement stiffness of a magnetic bearing can be obtained. The magnetic bearing stiffness testing device and method can solve the problem of stiffness measurement of high-load and high-stiffness magnetic bearings, achieve rapid and automatic measurement of the current stiffness and the displacement stiffness of the high-load and high-stiffness magnetic bearings and meet the requirement on mass production of products.

Description

technical field [0001] The invention relates to a stiffness testing device and a testing method of a magnetic suspension bearing, which is suitable for a large-load and high-rigidity magnetic suspension bearing, and belongs to the technical field of magnetic suspension. Background technique [0002] Inertial actuators are generally used for attitude adjustment and control of various satellites, space stations and other spacecraft platforms. Among them, flywheels supported by magnetic suspension bearings and control moment gyroscopes are important types. At present, the inertial actuators used by my country's in-orbit spacecraft are based on the inertial actuators supported by mechanical bearings. Due to the mechanical ball bearings, an additional lubrication system is required; and the magnetic suspension bearing adopts non-contact and frictionless suspension technology, which solves friction and vibration. The problem, with the advantages of high precision, long life and hig...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a stiffness test device and test method for magnetic suspension bearings, and to solve the problem that the magnetic bearing components cannot be individually measured or directly measured after the assembly of the magnetic bearing components is completed , realizing the automatic comprehensive test of the stiffness of the magnetic suspension bearing, avoiding repeated disassembly and assembly caused by unqualified components, and meeting the mass production of products

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